Chalco, Mexico, Mexico Historical Air Quality Analysis
Dive into detailed Air Quality Insights with historical data, monthly patterns, and yearly trends at your fingertips!
Good
050
Moderate
100
Poor
150
Unhealthy
200
Severe
300
Hazardous
301+
September Air Quality Analysis
Chalco, Mexico, Mexico
2022
2023
2024
2025
2026
AQI
.
Days
AQI Trends: Highest and Lowest
Highest AQI recorded on
16th Sep 2024
73AQILowest AQI recorded on
5th Sep 2022
15AQISame Day Analysis (28th September):
On this day, AQI across the 5 years varied significantly: 2026 ranks 4th highest AQI at 23 of Good air quality, showing improvement over 2025, 2024 and 2022 on the same day.
Day & Night AQI Trend: 28th Sep - 29th Sep 2026
Chalco, Mexico, Mexico
AQI
Day
Night
.
6 AM28th Sep 2026
6 PM
5 AM29th Sep 2026
Day time
Avg. Highest Time
12PM28th Sep
38AQI
Avg. Lowest Time
5PM28th Sep
17AQI
Night time
Avg. Highest Time
9PM28th Sep
25AQI
Avg. Lowest Time
5AM29th Sep
17AQI
In the last 24 hours,
Chalco's AQI reached its highest point of 38 at 12 PM during the Day, while the lowest point, 17, was recorded at 5 AM during the Night between 28th Sep and 29th Sep 2026.
Day & Night AQI Trend : Aug - Sep 2026
Chalco, Mexico, Mexico
AugSep
31st - 01st01st - 02nd02nd - 03rd03rd - 04th04th - 05th05th - 06th06th - 07th07th - 08th08th - 09th09th - 10th10th - 11th11th - 12th12th - 13th13th - 14th14th - 15th15th - 16th16th - 17th17th - 18th18th - 19th19th - 20th20th - 21st21st - 22nd22nd - 23rd23rd - 24th24th - 25th25th - 26th26th - 27th27th - 28th28th - 29th29th
Day
Night
31st Aug 2026256 AMAQI
31st Aug 2026257 AMAQI
31st Aug 2026278 AMAQI
31st Aug 2026299 AMAQI
31st Aug 20263110 AMAQI
31st Aug 20263111 AMAQI
31st Aug 20262912 PMAQI
31st Aug 2026291 PMAQI
31st Aug 2026362 PMAQI
31st Aug 2026383 PMAQI
31st Aug 2026364 PMAQI
31st Aug 2026365 PMAQI
31st Aug 2026386 PMAQI
31st Aug 2026407 PMAQI
31st Aug 2026448 PMAQI
31st Aug 2026389 PMAQI
31st Aug 20263310 PMAQI
31st Aug 20262911 PMAQI
1st Sep 20262712 AMAQI
1st Sep 2026231 AMAQI
1st Sep 2026232 AMAQI
1st Sep 2026213 AMAQI
1st Sep 2026254 AMAQI
1st Sep 2026255 AMAQI
16°C12/23°C
1st Sep 2026296 AMAQI
1st Sep 2026297 AMAQI
1st Sep 2026298 AMAQI
1st Sep 2026299 AMAQI
1st Sep 20263110 AMAQI
1st Sep 20263111 AMAQI
1st Sep 20263312 PMAQI
1st Sep 2026311 PMAQI
1st Sep 2026332 PMAQI
1st Sep 2026273 PMAQI
1st Sep 2026384 PMAQI
1st Sep 2026255 PMAQI
1st Sep 2026296 PMAQI
1st Sep 2026257 PMAQI
1st Sep 2026258 PMAQI
1st Sep 2026259 PMAQI
1st Sep 20262510 PMAQI
1st Sep 20262511 PMAQI
2nd Sep 20262512 AMAQI
2nd Sep 2026251 AMAQI
2nd Sep 2026252 AMAQI
2nd Sep 2026253 AMAQI
2nd Sep 2026254 AMAQI
2nd Sep 2026255 AMAQI
16°C13/23°C
2nd Sep 2026236 AMAQI
2nd Sep 2026237 AMAQI
2nd Sep 2026238 AMAQI
2nd Sep 2026259 AMAQI
2nd Sep 20262510 AMAQI
2nd Sep 20262311 AMAQI
2nd Sep 20262312 PMAQI
2nd Sep 2026231 PMAQI
2nd Sep 2026232 PMAQI
2nd Sep 2026313 PMAQI
2nd Sep 2026294 PMAQI
2nd Sep 2026275 PMAQI
2nd Sep 2026296 PMAQI
2nd Sep 2026317 PMAQI
2nd Sep 2026318 PMAQI
2nd Sep 2026279 PMAQI
2nd Sep 20262310 PMAQI
2nd Sep 20262511 PMAQI
3rd Sep 20262312 AMAQI
3rd Sep 2026231 AMAQI
3rd Sep 2026212 AMAQI
3rd Sep 2026193 AMAQI
3rd Sep 2026234 AMAQI
3rd Sep 2026215 AMAQI
16°C13/24°C
3rd Sep 2026196 AMAQI
3rd Sep 2026217 AMAQI
3rd Sep 2026238 AMAQI
3rd Sep 2026219 AMAQI
3rd Sep 20262110 AMAQI
3rd Sep 20262711 AMAQI
3rd Sep 20262712 PMAQI
3rd Sep 2026251 PMAQI
3rd Sep 2026232 PMAQI
3rd Sep 2026213 PMAQI
3rd Sep 2026234 PMAQI
3rd Sep 2026215 PMAQI
3rd Sep 2026216 PMAQI
3rd Sep 2026237 PMAQI
3rd Sep 2026278 PMAQI
3rd Sep 2026369 PMAQI
3rd Sep 20264010 PMAQI
3rd Sep 20264211 PMAQI
4th Sep 20263612 AMAQI
4th Sep 2026311 AMAQI
4th Sep 2026252 AMAQI
4th Sep 2026253 AMAQI
4th Sep 2026254 AMAQI
4th Sep 2026255 AMAQI
16°C12/24°C
4th Sep 2026236 AMAQI
4th Sep 2026257 AMAQI
4th Sep 2026258 AMAQI
4th Sep 2026259 AMAQI
4th Sep 20262710 AMAQI
4th Sep 20262711 AMAQI
4th Sep 20262912 PMAQI
4th Sep 2026311 PMAQI
4th Sep 2026292 PMAQI
4th Sep 2026313 PMAQI
4th Sep 2026274 PMAQI
4th Sep 2026275 PMAQI
4th Sep 2026256 PMAQI
4th Sep 2026297 PMAQI
4th Sep 2026338 PMAQI
4th Sep 2026339 PMAQI
4th Sep 20263110 PMAQI
4th Sep 20262911 PMAQI
5th Sep 20263112 AMAQI
5th Sep 2026291 AMAQI
5th Sep 2026292 AMAQI
5th Sep 2026313 AMAQI
5th Sep 2026314 AMAQI
5th Sep 2026315 AMAQI
16°C12/24°C
5th Sep 2026316 AMAQI
5th Sep 2026317 AMAQI
5th Sep 2026318 AMAQI
5th Sep 2026319 AMAQI
5th Sep 20263310 AMAQI
5th Sep 20263611 AMAQI
5th Sep 20263612 PMAQI
5th Sep 2026361 PMAQI
5th Sep 2026272 PMAQI
5th Sep 2026253 PMAQI
5th Sep 2026254 PMAQI
5th Sep 2026235 PMAQI
5th Sep 2026236 PMAQI
5th Sep 2026257 PMAQI
5th Sep 2026238 PMAQI
5th Sep 2026279 PMAQI
5th Sep 20262910 PMAQI
5th Sep 20263111 PMAQI
6th Sep 20262912 AMAQI
6th Sep 2026271 AMAQI
6th Sep 2026252 AMAQI
6th Sep 2026253 AMAQI
6th Sep 2026274 AMAQI
6th Sep 2026275 AMAQI
16°C12/23°C
6th Sep 2026316 AMAQI
6th Sep 2026317 AMAQI
6th Sep 2026318 AMAQI
6th Sep 2026349 AMAQI
6th Sep 20263610 AMAQI
6th Sep 20263611 AMAQI
6th Sep 20263312 PMAQI
6th Sep 2026331 PMAQI
6th Sep 2026332 PMAQI
6th Sep 2026293 PMAQI
6th Sep 2026294 PMAQI
6th Sep 2026275 PMAQI
6th Sep 2026276 PMAQI
6th Sep 2026237 PMAQI
6th Sep 2026218 PMAQI
6th Sep 2026239 PMAQI
6th Sep 20262510 PMAQI
6th Sep 20262711 PMAQI
7th Sep 20262512 AMAQI
7th Sep 2026251 AMAQI
7th Sep 2026232 AMAQI
7th Sep 2026213 AMAQI
7th Sep 2026194 AMAQI
7th Sep 2026175 AMAQI
16°C13/22°C
7th Sep 2026176 AMAQI
7th Sep 2026217 AMAQI
7th Sep 2026178 AMAQI
7th Sep 2026219 AMAQI
7th Sep 20262110 AMAQI
7th Sep 20262111 AMAQI
7th Sep 20261912 PMAQI
7th Sep 2026191 PMAQI
7th Sep 2026212 PMAQI
7th Sep 2026213 PMAQI
7th Sep 2026234 PMAQI
7th Sep 2026255 PMAQI
7th Sep 2026256 PMAQI
7th Sep 2026277 PMAQI
7th Sep 2026298 PMAQI
7th Sep 2026299 PMAQI
7th Sep 20262710 PMAQI
7th Sep 20262911 PMAQI
8th Sep 20262712 AMAQI
8th Sep 2026251 AMAQI
8th Sep 2026252 AMAQI
8th Sep 2026253 AMAQI
8th Sep 2026214 AMAQI
8th Sep 2026215 AMAQI
14°C13/18°C
8th Sep 2026196 AMAQI
8th Sep 2026217 AMAQI
8th Sep 2026238 AMAQI
8th Sep 2026239 AMAQI
8th Sep 20261910 AMAQI
8th Sep 20261911 AMAQI
8th Sep 20262112 PMAQI
8th Sep 2026231 PMAQI
8th Sep 2026252 PMAQI
8th Sep 2026253 PMAQI
8th Sep 2026254 PMAQI
8th Sep 2026295 PMAQI
8th Sep 2026276 PMAQI
8th Sep 2026237 PMAQI
8th Sep 2026238 PMAQI
8th Sep 2026219 PMAQI
8th Sep 20262510 PMAQI
8th Sep 20262511 PMAQI
9th Sep 20262512 AMAQI
9th Sep 2026291 AMAQI
9th Sep 2026232 AMAQI
9th Sep 2026233 AMAQI
9th Sep 2026194 AMAQI
9th Sep 2026255 AMAQI
16°C12/21°C
9th Sep 2026216 AMAQI
9th Sep 2026237 AMAQI
9th Sep 2026218 AMAQI
9th Sep 2026199 AMAQI
9th Sep 20262110 AMAQI
9th Sep 20261711 AMAQI
9th Sep 20262112 PMAQI
9th Sep 2026211 PMAQI
9th Sep 2026192 PMAQI
9th Sep 2026193 PMAQI
9th Sep 2026214 PMAQI
9th Sep 2026215 PMAQI
9th Sep 2026196 PMAQI
9th Sep 2026197 PMAQI
9th Sep 2026218 PMAQI
9th Sep 2026259 PMAQI
9th Sep 20262910 PMAQI
9th Sep 20262311 PMAQI
10th Sep 20262312 AMAQI
10th Sep 2026231 AMAQI
10th Sep 2026192 AMAQI
10th Sep 2026193 AMAQI
10th Sep 2026254 AMAQI
10th Sep 2026195 AMAQI
15°C12/21°C
10th Sep 2026236 AMAQI
10th Sep 2026237 AMAQI
10th Sep 2026258 AMAQI
10th Sep 2026259 AMAQI
10th Sep 20262510 AMAQI
10th Sep 20262711 AMAQI
10th Sep 20262512 PMAQI
10th Sep 2026251 PMAQI
10th Sep 2026272 PMAQI
10th Sep 2026253 PMAQI
10th Sep 2026254 PMAQI
10th Sep 2026255 PMAQI
10th Sep 2026256 PMAQI
10th Sep 2026257 PMAQI
10th Sep 2026218 PMAQI
10th Sep 2026239 PMAQI
10th Sep 20261710 PMAQI
10th Sep 20262111 PMAQI
11th Sep 20262112 AMAQI
11th Sep 2026211 AMAQI
11th Sep 2026192 AMAQI
11th Sep 2026193 AMAQI
11th Sep 2026254 AMAQI
11th Sep 2026175 AMAQI
16°C11/23°C
11th Sep 2026196 AMAQI
11th Sep 2026177 AMAQI
11th Sep 2026198 AMAQI
11th Sep 2026199 AMAQI
11th Sep 20262310 AMAQI
11th Sep 20261411 AMAQI
11th Sep 20261712 PMAQI
11th Sep 2026211 PMAQI
11th Sep 2026212 PMAQI
11th Sep 2026193 PMAQI
11th Sep 2026254 PMAQI
11th Sep 2026255 PMAQI
11th Sep 2026266 PMAQI
11th Sep 2026267 PMAQI
11th Sep 2026228 PMAQI
11th Sep 2026219 PMAQI
11th Sep 20262310 PMAQI
11th Sep 20261911 PMAQI
12th Sep 20262112 AMAQI
12th Sep 2026211 AMAQI
12th Sep 2026212 AMAQI
12th Sep 2026193 AMAQI
12th Sep 2026174 AMAQI
12th Sep 2026175 AMAQI
16°C14/22°C
12th Sep 2026176 AMAQI
12th Sep 2026177 AMAQI
12th Sep 2026178 AMAQI
12th Sep 2026279 AMAQI
12th Sep 20261710 AMAQI
12th Sep 20261911 AMAQI
12th Sep 20261712 PMAQI
12th Sep 2026171 PMAQI
12th Sep 2026173 PMAQI
12th Sep 2026174 PMAQI
12th Sep 2026195 PMAQI
12th Sep 2026216 PMAQI
12th Sep 2026217 PMAQI
12th Sep 2026198 PMAQI
12th Sep 2026239 PMAQI
12th Sep 20262510 PMAQI
12th Sep 20261611 PMAQI
13th Sep 20261212 AMAQI
13th Sep 2026101 AMAQI
13th Sep 2026102 AMAQI
13th Sep 2026213 AMAQI
13th Sep 2026174 AMAQI
13th Sep 2026235 AMAQI
17°C12/23°C
13th Sep 2026176 AMAQI
13th Sep 2026177 AMAQI
13th Sep 2026178 AMAQI
13th Sep 2026179 AMAQI
13th Sep 20261410 AMAQI
13th Sep 20261211 AMAQI
13th Sep 20261612 PMAQI
13th Sep 2026171 PMAQI
13th Sep 2026172 PMAQI
13th Sep 2026173 PMAQI
13th Sep 2026124 PMAQI
13th Sep 2026125 PMAQI
13th Sep 2026176 PMAQI
13th Sep 2026177 PMAQI
13th Sep 2026178 PMAQI
13th Sep 2026249 PMAQI
13th Sep 20261010 PMAQI
13th Sep 20261711 PMAQI
14th Sep 20262112 AMAQI
14th Sep 2026191 AMAQI
14th Sep 2026172 AMAQI
14th Sep 2026173 AMAQI
14th Sep 2026174 AMAQI
14th Sep 2026215 AMAQI
17°C12/24°C
14th Sep 2026196 AMAQI
14th Sep 2026237 AMAQI
14th Sep 2026198 AMAQI
14th Sep 2026219 AMAQI
14th Sep 20262110 AMAQI
14th Sep 20261711 AMAQI
14th Sep 20261712 PMAQI
14th Sep 2026171 PMAQI
14th Sep 2026212 PMAQI
14th Sep 2026253 PMAQI
14th Sep 2026254 PMAQI
14th Sep 2026235 PMAQI
14th Sep 2026236 PMAQI
14th Sep 2026257 PMAQI
14th Sep 2026258 PMAQI
14th Sep 2026259 PMAQI
14th Sep 20262810 PMAQI
14th Sep 20263311 PMAQI
15th Sep 20263812 AMAQI
15th Sep 2026361 AMAQI
15th Sep 2026382 AMAQI
15th Sep 2026423 AMAQI
15th Sep 2026424 AMAQI
15th Sep 2026445 AMAQI
15°C12/20°C
15th Sep 2026446 AMAQI
15th Sep 2026447 AMAQI
15th Sep 2026488 AMAQI
15th Sep 2026449 AMAQI
15th Sep 20265110 AMAQI
15th Sep 20265111 AMAQI
15th Sep 20265112 PMAQI
15th Sep 2026501 PMAQI
15th Sep 2026492 PMAQI
15th Sep 2026513 PMAQI
15th Sep 2026504 PMAQI
15th Sep 2026485 PMAQI
15th Sep 2026506 PMAQI
15th Sep 2026517 PMAQI
15th Sep 2026548 PMAQI
15th Sep 2026529 PMAQI
15th Sep 20265410 PMAQI
15th Sep 20265211 PMAQI
16th Sep 20265212 AMAQI
16th Sep 2026521 AMAQI
16th Sep 2026512 AMAQI
16th Sep 2026513 AMAQI
16th Sep 2026514 AMAQI
16th Sep 2026465 AMAQI
16°C12/21°C
16th Sep 2026486 AMAQI
16th Sep 2026487 AMAQI
16th Sep 2026508 AMAQI
16th Sep 2026469 AMAQI
16th Sep 20264410 AMAQI
16th Sep 20264811 AMAQI
16th Sep 20265012 PMAQI
16th Sep 2026481 PMAQI
16th Sep 2026442 PMAQI
16th Sep 2026443 PMAQI
16th Sep 2026364 PMAQI
16th Sep 2026365 PMAQI
16th Sep 2026316 PMAQI
16th Sep 2026257 PMAQI
16th Sep 2026258 PMAQI
16th Sep 2026219 PMAQI
16th Sep 20262110 PMAQI
16th Sep 20261911 PMAQI
17th Sep 20262112 AMAQI
17th Sep 2026211 AMAQI
17th Sep 2026172 AMAQI
17th Sep 2026173 AMAQI
17th Sep 2026174 AMAQI
17th Sep 2026175 AMAQI
16°C12/23°C
17th Sep 2026196 AMAQI
17th Sep 2026257 AMAQI
17th Sep 2026258 AMAQI
17th Sep 2026179 AMAQI
17th Sep 20261710 AMAQI
17th Sep 20261711 AMAQI
17th Sep 20261712 PMAQI
17th Sep 2026231 PMAQI
17th Sep 2026192 PMAQI
17th Sep 2026173 PMAQI
17th Sep 2026174 PMAQI
17th Sep 2026175 PMAQI
17th Sep 2026176 PMAQI
17th Sep 2026177 PMAQI
17th Sep 2026178 PMAQI
17th Sep 2026179 PMAQI
17th Sep 20261710 PMAQI
17th Sep 20261711 PMAQI
18th Sep 20261712 AMAQI
18th Sep 2026191 AMAQI
18th Sep 2026212 AMAQI
18th Sep 2026233 AMAQI
18th Sep 2026214 AMAQI
18th Sep 2026215 AMAQI
16°C12/22°C
18th Sep 2026196 AMAQI
18th Sep 2026197 AMAQI
18th Sep 2026198 AMAQI
18th Sep 2026219 AMAQI
18th Sep 20263610 AMAQI
18th Sep 20261711 AMAQI
18th Sep 20261912 PMAQI
18th Sep 2026171 PMAQI
18th Sep 2026232 PMAQI
18th Sep 2026213 PMAQI
18th Sep 2026214 PMAQI
18th Sep 2026335 PMAQI
18th Sep 2026366 PMAQI
18th Sep 2026277 PMAQI
18th Sep 2026368 PMAQI
18th Sep 2026259 PMAQI
18th Sep 20261410 PMAQI
18th Sep 20262511 PMAQI
19th Sep 20262912 AMAQI
19th Sep 2026161 AMAQI
19th Sep 2026332 AMAQI
19th Sep 2026253 AMAQI
19th Sep 2026294 AMAQI
19th Sep 2026175 AMAQI
16°C12/23°C
19th Sep 2026146 AMAQI
19th Sep 2026127 AMAQI
19th Sep 2026198 AMAQI
19th Sep 2026179 AMAQI
19th Sep 20261410 AMAQI
19th Sep 20261711 AMAQI
19th Sep 20262512 PMAQI
19th Sep 2026171 PMAQI
19th Sep 2026192 PMAQI
19th Sep 2026233 PMAQI
19th Sep 2026344 PMAQI
19th Sep 2026345 PMAQI
19th Sep 2026176 PMAQI
19th Sep 2026197 PMAQI
19th Sep 2026218 PMAQI
19th Sep 2026219 PMAQI
19th Sep 20261410 PMAQI
19th Sep 20261011 PMAQI
20th Sep 20262112 AMAQI
20th Sep 2026211 AMAQI
20th Sep 2026192 AMAQI
20th Sep 2026213 AMAQI
20th Sep 2026214 AMAQI
20th Sep 2026255 AMAQI
16°C12/22°C
20th Sep 2026176 AMAQI
20th Sep 2026217 AMAQI
20th Sep 2026258 AMAQI
20th Sep 2026199 AMAQI
20th Sep 20262110 AMAQI
20th Sep 20261711 AMAQI
20th Sep 20261712 PMAQI
20th Sep 2026171 PMAQI
20th Sep 2026142 PMAQI
20th Sep 2026173 PMAQI
20th Sep 2026404 PMAQI
20th Sep 2026175 PMAQI
20th Sep 202686 PMAQI
20th Sep 202687 PMAQI
20th Sep 2026188 PMAQI
20th Sep 2026239 PMAQI
20th Sep 20261810 PMAQI
20th Sep 20262111 PMAQI
21st Sep 20262112 AMAQI
21st Sep 2026191 AMAQI
21st Sep 2026172 AMAQI
21st Sep 2026293 AMAQI
21st Sep 2026214 AMAQI
21st Sep 2026125 AMAQI
17°C13/23°C
21st Sep 2026236 AMAQI
21st Sep 2026177 AMAQI
21st Sep 2026168 AMAQI
21st Sep 2026189 AMAQI
21st Sep 20261710 AMAQI
21st Sep 20261811 AMAQI
21st Sep 20261712 PMAQI
21st Sep 2026211 PMAQI
21st Sep 2026252 PMAQI
21st Sep 2026123 PMAQI
21st Sep 2026214 PMAQI
21st Sep 2026125 PMAQI
21st Sep 2026196 PMAQI
21st Sep 2026207 PMAQI
21st Sep 2026328 PMAQI
21st Sep 2026169 PMAQI
21st Sep 20261710 PMAQI
21st Sep 20261411 PMAQI
22nd Sep 2026812 AMAQI
22nd Sep 2026101 AMAQI
22nd Sep 202692 AMAQI
22nd Sep 2026173 AMAQI
22nd Sep 2026174 AMAQI
22nd Sep 2026285 AMAQI
18°C13/24°C
22nd Sep 2026216 AMAQI
22nd Sep 2026217 AMAQI
22nd Sep 2026198 AMAQI
22nd Sep 2026219 AMAQI
22nd Sep 20261910 AMAQI
22nd Sep 20261711 AMAQI
22nd Sep 20261712 PMAQI
22nd Sep 2026171 PMAQI
22nd Sep 2026192 PMAQI
22nd Sep 2026193 PMAQI
22nd Sep 2026164 PMAQI
22nd Sep 2026255 PMAQI
22nd Sep 2026196 PMAQI
22nd Sep 2026167 PMAQI
22nd Sep 2026278 PMAQI
22nd Sep 2026239 PMAQI
22nd Sep 20261710 PMAQI
22nd Sep 20261711 PMAQI
23rd Sep 20261712 AMAQI
23rd Sep 2026141 AMAQI
23rd Sep 2026172 AMAQI
23rd Sep 2026173 AMAQI
23rd Sep 2026174 AMAQI
23rd Sep 2026195 AMAQI
16°C13/22°C
23rd Sep 2026176 AMAQI
23rd Sep 2026177 AMAQI
23rd Sep 2026178 AMAQI
23rd Sep 2026179 AMAQI
23rd Sep 20261910 AMAQI
23rd Sep 20261711 AMAQI
23rd Sep 20262112 PMAQI
23rd Sep 2026171 PMAQI
23rd Sep 2026172 PMAQI
23rd Sep 2026173 PMAQI
23rd Sep 2026194 PMAQI
23rd Sep 2026215 PMAQI
23rd Sep 2026176 PMAQI
23rd Sep 2026197 PMAQI
23rd Sep 2026178 PMAQI
23rd Sep 2026199 PMAQI
23rd Sep 20262910 PMAQI
23rd Sep 20262011 PMAQI
24th Sep 20262512 AMAQI
24th Sep 2026211 AMAQI
24th Sep 2026212 AMAQI
24th Sep 2026173 AMAQI
24th Sep 2026194 AMAQI
24th Sep 2026175 AMAQI
17°C12/23°C
24th Sep 2026176 AMAQI
24th Sep 2026177 AMAQI
24th Sep 2026198 AMAQI
24th Sep 2026199 AMAQI
24th Sep 20261710 AMAQI
24th Sep 20261711 AMAQI
24th Sep 20262312 PMAQI
24th Sep 2026161 PMAQI
24th Sep 2026172 PMAQI
24th Sep 2026213 PMAQI
24th Sep 2026214 PMAQI
24th Sep 2026195 PMAQI
24th Sep 2026216 PMAQI
24th Sep 2026277 PMAQI
24th Sep 2026188 PMAQI
24th Sep 2026129 PMAQI
24th Sep 20261910 PMAQI
24th Sep 20262111 PMAQI
25th Sep 20261912 AMAQI
25th Sep 2026191 AMAQI
25th Sep 2026122 AMAQI
25th Sep 2026123 AMAQI
25th Sep 2026194 AMAQI
25th Sep 2026175 AMAQI
17°C12/22°C
25th Sep 2026176 AMAQI
25th Sep 2026177 AMAQI
25th Sep 2026218 AMAQI
25th Sep 2026259 AMAQI
25th Sep 20261710 AMAQI
25th Sep 20261711 AMAQI
25th Sep 20261712 PMAQI
25th Sep 2026171 PMAQI
25th Sep 2026142 PMAQI
25th Sep 2026273 PMAQI
25th Sep 2026194 PMAQI
25th Sep 2026195 PMAQI
25th Sep 2026336 PMAQI
25th Sep 2026237 PMAQI
25th Sep 2026218 PMAQI
25th Sep 2026239 PMAQI
25th Sep 20262310 PMAQI
25th Sep 20262111 PMAQI
26th Sep 20262312 AMAQI
26th Sep 2026211 AMAQI
26th Sep 2026212 AMAQI
26th Sep 2026173 AMAQI
26th Sep 2026174 AMAQI
26th Sep 2026175 AMAQI
17°C12/24°C
26th Sep 2026196 AMAQI
26th Sep 2026197 AMAQI
26th Sep 2026198 AMAQI
26th Sep 2026179 AMAQI
26th Sep 20261710 AMAQI
26th Sep 20261711 AMAQI
26th Sep 20261712 PMAQI
26th Sep 2026231 PMAQI
26th Sep 2026172 PMAQI
26th Sep 2026173 PMAQI
26th Sep 2026144 PMAQI
26th Sep 2026175 PMAQI
26th Sep 2026126 PMAQI
26th Sep 2026297 PMAQI
26th Sep 2026258 PMAQI
26th Sep 2026259 PMAQI
26th Sep 20262310 PMAQI
26th Sep 20262511 PMAQI
27th Sep 20262112 AMAQI
27th Sep 2026211 AMAQI
27th Sep 2026192 AMAQI
27th Sep 2026233 AMAQI
27th Sep 2026254 AMAQI
27th Sep 2026235 AMAQI
17°C13/24°C
27th Sep 2026256 AMAQI
27th Sep 2026277 AMAQI
27th Sep 2026258 AMAQI
27th Sep 2026259 AMAQI
27th Sep 20262310 AMAQI
27th Sep 20262311 AMAQI
27th Sep 20261012 PMAQI
27th Sep 2026211 PMAQI
27th Sep 2026172 PMAQI
27th Sep 2026253 PMAQI
27th Sep 2026164 PMAQI
27th Sep 2026105 PMAQI
27th Sep 2026166 PMAQI
27th Sep 2026107 PMAQI
27th Sep 2026148 PMAQI
27th Sep 2026129 PMAQI
27th Sep 20261410 PMAQI
27th Sep 20262711 PMAQI
28th Sep 20262712 AMAQI
28th Sep 2026211 AMAQI
28th Sep 2026212 AMAQI
28th Sep 2026253 AMAQI
28th Sep 2026254 AMAQI
28th Sep 2026255 AMAQI
17°C13/23°C
28th Sep 2026236 AMAQI
28th Sep 2026317 AMAQI
28th Sep 2026318 AMAQI
28th Sep 2026219 AMAQI
28th Sep 20262310 AMAQI
28th Sep 20263311 AMAQI
28th Sep 20263812 PMAQI
28th Sep 2026331 PMAQI
28th Sep 2026172 PMAQI
28th Sep 2026173 PMAQI
28th Sep 2026174 PMAQI
28th Sep 2026175 PMAQI
28th Sep 2026216 PMAQI
28th Sep 2026177 PMAQI
28th Sep 2026178 PMAQI
28th Sep 2026259 PMAQI
28th Sep 20261710 PMAQI
28th Sep 20261711 PMAQI
29th Sep 20261712 AMAQI
29th Sep 2026171 AMAQI
29th Sep 2026172 AMAQI
29th Sep 2026173 AMAQI
29th Sep 2026174 AMAQI
29th Sep 2026175 AMAQI
17°C14/23°C
29th Sep 2026176 AMAQI
6 AM29th Sep 2026177 AMAQI
29th Sep 2026198 AMAQI
29th Sep 2026219 AMAQI
29th Sep 20262110 AMAQI
29th Sep 20262311 AMAQI
29th Sep 20262712 PMAQI
12 PM29th Sep 2026271 PMAQI
29th Sep 2026272 PMAQI
29th Sep 2026253 PMAQI
29th Sep 2026254 PMAQI
29th Sep 2026255 PMAQI
29th Sep 2026256 PMAQI
6 PM29th Sep 2026257 PMAQI
12 AM
5 AM
17°C13/23°C
Day time
Avg. Highest Time
4 PM
25AQI
1 hours / Day
30 hours / Month
Avg. Lowest Time
6 AM
22AQI
1 hours / Day
30 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 4 PM to 4 PM (Avg. 25), while the lowest AQI was between 6 AM to 6 AM (Avg. 22).
Night time
Avg. Highest Time
8 PM - 9 PM
25AQI
2 hours / Day
60 hours / Month
Avg. Lowest Time
2 AM
22AQI
1 hours / Day
30 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 8 PM to 9 PM (Avg. 25), while the lowest AQI was between 2 AM to 2 AM (Avg. 22).
2026 Days Vs Air Quality
Chalco, Mexico, Mexico
2026
98%
262
2%
6
Total number of days with different AQI categories in last 272 days in 2026 (93 days remaining)
Good
262 DaysModerate
6 DaysPoor
0 DaysUnhealthy
0 DaysSevere
0 DaysHazardous
0 DaysUnder WHO’s Safe Air Quality Limits: 98%
Health Risk Level:
Very Low
In 2026, 98% of 272 days were within WHO’s safe air quality limits. The risk of health issues is Very Low, but health impacts are still unclear.
Annual Air Quality Insights
Chalco, Mexico, Mexico
AQI levels in 2026
AQI (US)
PM₂.₅
PM₁₀
CO
SO₂
NO₂
O₃
Sun.Mon.Tue.Wed.Thu.Fri.Sat.
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
-1th undefined 2026
-1th undefined 2026
-1th undefined 2026
-1th undefined 2026
1st January 2026
63AQI (US)
63AQI (US)
2nd January 2026
32AQI (US)
32AQI (US)
3rd January 2026
38AQI (US)
38AQI (US)
4th January 2026
23AQI (US)
23AQI (US)
5th January 2026
38AQI (US)
38AQI (US)
6th January 2026
44AQI (US)
44AQI (US)
7th January 2026
31AQI (US)
31AQI (US)
8th January 2026
34AQI (US)
34AQI (US)
9th January 2026
29AQI (US)
29AQI (US)
10th January 2026
30AQI (US)
30AQI (US)
11th January 2026
20AQI (US)
20AQI (US)
12th January 2026
53AQI (US)
53AQI (US)
13th January 2026
35AQI (US)
35AQI (US)
14th January 2026
33AQI (US)
33AQI (US)
15th January 2026
22AQI (US)
22AQI (US)
16th January 2026
52AQI (US)
52AQI (US)
17th January 2026
44AQI (US)
44AQI (US)
18th January 2026
45AQI (US)
45AQI (US)
19th January 2026
56AQI (US)
56AQI (US)
20th January 2026
49AQI (US)
49AQI (US)
21st January 2026
52AQI (US)
52AQI (US)
22nd January 2026
36AQI (US)
36AQI (US)
23rd January 2026
37AQI (US)
37AQI (US)
24th January 2026
38AQI (US)
38AQI (US)
25th January 2026
42AQI (US)
42AQI (US)
26th January 2026
38AQI (US)
38AQI (US)
27th January 2026
35AQI (US)
35AQI (US)
28th January 2026
37AQI (US)
37AQI (US)
29th January 2026
35AQI (US)
35AQI (US)
30th January 2026
27AQI (US)
27AQI (US)
31st January 2026
36AQI (US)
36AQI (US)
1st February 2026
34AQI (US)
34AQI (US)
2nd February 2026
36AQI (US)
36AQI (US)
3rd February 2026
37AQI (US)
37AQI (US)
4th February 2026
40AQI (US)
40AQI (US)
5th February 2026
34AQI (US)
34AQI (US)
6th February 2026
31AQI (US)
31AQI (US)
7th February 2026
30AQI (US)
30AQI (US)
8th February 2026
33AQI (US)
33AQI (US)
9th February 2026
35AQI (US)
35AQI (US)
10th February 2026
28AQI (US)
28AQI (US)
11th February 2026
27AQI (US)
27AQI (US)
12th February 2026
27AQI (US)
27AQI (US)
13th February 2026
29AQI (US)
29AQI (US)
14th February 2026
37AQI (US)
37AQI (US)
15th February 2026
26AQI (US)
26AQI (US)
16th February 2026
30AQI (US)
30AQI (US)
17th February 2026
30AQI (US)
30AQI (US)
18th February 2026
35AQI (US)
35AQI (US)
19th February 2026
39AQI (US)
39AQI (US)
20th February 2026
41AQI (US)
41AQI (US)
21st February 2026
35AQI (US)
35AQI (US)
22nd February 2026
36AQI (US)
36AQI (US)
23rd February 2026
27AQI (US)
27AQI (US)
24th February 2026
29AQI (US)
29AQI (US)
25th February 2026
32AQI (US)
32AQI (US)
26th February 2026
30AQI (US)
30AQI (US)
27th February 2026
31AQI (US)
31AQI (US)
28th February 2026
28AQI (US)
28AQI (US)
1st March 2026
25AQI (US)
25AQI (US)
2nd March 2026
26AQI (US)
26AQI (US)
3rd March 2026
35AQI (US)
35AQI (US)
4th March 2026
33AQI (US)
33AQI (US)
5th March 2026
31AQI (US)
31AQI (US)
6th March 2026
31AQI (US)
31AQI (US)
7th March 2026
31AQI (US)
31AQI (US)
8th March 2026
25AQI (US)
25AQI (US)
9th March 2026
30AQI (US)
30AQI (US)
10th March 2026
28AQI (US)
28AQI (US)
11th March 2026
24AQI (US)
24AQI (US)
12th March 2026
25AQI (US)
25AQI (US)
13th March 2026
24AQI (US)
24AQI (US)
14th March 2026
24AQI (US)
24AQI (US)
15th March 2026
28AQI (US)
28AQI (US)
16th March 2026
57AQI (US)
57AQI (US)
17th March 2026
17AQI (US)
17AQI (US)
18th March 2026
26AQI (US)
26AQI (US)
19th March 2026
27AQI (US)
27AQI (US)
20th March 2026
22AQI (US)
22AQI (US)
21st March 2026
23AQI (US)
23AQI (US)
22nd March 2026
24AQI (US)
24AQI (US)
23rd March 2026
20AQI (US)
20AQI (US)
24th March 2026
21AQI (US)
21AQI (US)
25th March 2026
21AQI (US)
21AQI (US)
26th March 2026
20AQI (US)
20AQI (US)
27th March 2026
19AQI (US)
19AQI (US)
28th March 2026
18AQI (US)
18AQI (US)
29th March 2026
23AQI (US)
23AQI (US)
30th March 2026
25AQI (US)
25AQI (US)
31st March 2026
23AQI (US)
23AQI (US)
1st April 2026
25AQI (US)
25AQI (US)
2nd April 2026
39AQI (US)
39AQI (US)
3rd April 2026
28AQI (US)
28AQI (US)
4th April 2026
18AQI (US)
18AQI (US)
5th April 2026
23AQI (US)
23AQI (US)
6th April 2026
17AQI (US)
17AQI (US)
7th April 2026
16AQI (US)
16AQI (US)
8th April 2026
19AQI (US)
19AQI (US)
9th April 2026
15AQI (US)
15AQI (US)
10th April 2026
18AQI (US)
18AQI (US)
11th April 2026
17AQI (US)
17AQI (US)
12th April 2026
21AQI (US)
21AQI (US)
13th April 2026
19AQI (US)
19AQI (US)
14th April 2026
22AQI (US)
22AQI (US)
15th April 2026
22AQI (US)
22AQI (US)
16th April 2026
23AQI (US)
23AQI (US)
17th April 2026
18th April 2026
24AQI (US)
24AQI (US)
19th April 2026
25AQI (US)
25AQI (US)
20th April 2026
21AQI (US)
21AQI (US)
21st April 2026
16AQI (US)
16AQI (US)
22nd April 2026
23rd April 2026
19AQI (US)
19AQI (US)
24th April 2026
24AQI (US)
24AQI (US)
25th April 2026
32AQI (US)
32AQI (US)
26th April 2026
26AQI (US)
26AQI (US)
27th April 2026
32AQI (US)
32AQI (US)
28th April 2026
37AQI (US)
37AQI (US)
29th April 2026
30AQI (US)
30AQI (US)
30th April 2026
27AQI (US)
27AQI (US)
1st May 2026
20AQI (US)
20AQI (US)
2nd May 2026
22AQI (US)
22AQI (US)
3rd May 2026
16AQI (US)
16AQI (US)
4th May 2026
18AQI (US)
18AQI (US)
5th May 2026
22AQI (US)
22AQI (US)
6th May 2026
33AQI (US)
33AQI (US)
7th May 2026
30AQI (US)
30AQI (US)
8th May 2026
22AQI (US)
22AQI (US)
9th May 2026
10th May 2026
20AQI (US)
20AQI (US)
11th May 2026
17AQI (US)
17AQI (US)
12th May 2026
16AQI (US)
16AQI (US)
13th May 2026
22AQI (US)
22AQI (US)
14th May 2026
18AQI (US)
18AQI (US)
15th May 2026
21AQI (US)
21AQI (US)
16th May 2026
20AQI (US)
20AQI (US)
17th May 2026
28AQI (US)
28AQI (US)
18th May 2026
35AQI (US)
35AQI (US)
19th May 2026
28AQI (US)
28AQI (US)
20th May 2026
21AQI (US)
21AQI (US)
21st May 2026
18AQI (US)
18AQI (US)
22nd May 2026
18AQI (US)
18AQI (US)
23rd May 2026
19AQI (US)
19AQI (US)
24th May 2026
17AQI (US)
17AQI (US)
25th May 2026
18AQI (US)
18AQI (US)
26th May 2026
26AQI (US)
26AQI (US)
27th May 2026
32AQI (US)
32AQI (US)
28th May 2026
40AQI (US)
40AQI (US)
29th May 2026
31AQI (US)
31AQI (US)
30th May 2026
29AQI (US)
29AQI (US)
31st May 2026
28AQI (US)
28AQI (US)
1st June 2026
27AQI (US)
27AQI (US)
2nd June 2026
28AQI (US)
28AQI (US)
3rd June 2026
28AQI (US)
28AQI (US)
4th June 2026
34AQI (US)
34AQI (US)
5th June 2026
31AQI (US)
31AQI (US)
6th June 2026
29AQI (US)
29AQI (US)
7th June 2026
22AQI (US)
22AQI (US)
8th June 2026
21AQI (US)
21AQI (US)
9th June 2026
25AQI (US)
25AQI (US)
10th June 2026
26AQI (US)
26AQI (US)
11th June 2026
23AQI (US)
23AQI (US)
12th June 2026
27AQI (US)
27AQI (US)
13th June 2026
26AQI (US)
26AQI (US)
14th June 2026
26AQI (US)
26AQI (US)
15th June 2026
23AQI (US)
23AQI (US)
16th June 2026
27AQI (US)
27AQI (US)
17th June 2026
28AQI (US)
28AQI (US)
18th June 2026
26AQI (US)
26AQI (US)
19th June 2026
26AQI (US)
26AQI (US)
20th June 2026
27AQI (US)
27AQI (US)
21st June 2026
22AQI (US)
22AQI (US)
22nd June 2026
21AQI (US)
21AQI (US)
23rd June 2026
22AQI (US)
22AQI (US)
24th June 2026
19AQI (US)
19AQI (US)
25th June 2026
19AQI (US)
19AQI (US)
26th June 2026
25AQI (US)
25AQI (US)
27th June 2026
24AQI (US)
24AQI (US)
28th June 2026
24AQI (US)
24AQI (US)
29th June 2026
24AQI (US)
24AQI (US)
30th June 2026
26AQI (US)
26AQI (US)
1st July 2026
26AQI (US)
26AQI (US)
2nd July 2026
28AQI (US)
28AQI (US)
3rd July 2026
27AQI (US)
27AQI (US)
4th July 2026
24AQI (US)
24AQI (US)
5th July 2026
24AQI (US)
24AQI (US)
6th July 2026
27AQI (US)
27AQI (US)
7th July 2026
29AQI (US)
29AQI (US)
8th July 2026
23AQI (US)
23AQI (US)
9th July 2026
25AQI (US)
25AQI (US)
10th July 2026
28AQI (US)
28AQI (US)
11th July 2026
29AQI (US)
29AQI (US)
12th July 2026
29AQI (US)
29AQI (US)
13th July 2026
30AQI (US)
30AQI (US)
14th July 2026
31AQI (US)
31AQI (US)
15th July 2026
27AQI (US)
27AQI (US)
16th July 2026
30AQI (US)
30AQI (US)
17th July 2026
21AQI (US)
21AQI (US)
18th July 2026
23AQI (US)
23AQI (US)
19th July 2026
31AQI (US)
31AQI (US)
20th July 2026
32AQI (US)
32AQI (US)
21st July 2026
30AQI (US)
30AQI (US)
22nd July 2026
24AQI (US)
24AQI (US)
23rd July 2026
23AQI (US)
23AQI (US)
24th July 2026
23AQI (US)
23AQI (US)
25th July 2026
27AQI (US)
27AQI (US)
26th July 2026
24AQI (US)
24AQI (US)
27th July 2026
24AQI (US)
24AQI (US)
28th July 2026
32AQI (US)
32AQI (US)
29th July 2026
28AQI (US)
28AQI (US)
30th July 2026
32AQI (US)
32AQI (US)
31st July 2026
34AQI (US)
34AQI (US)
1st August 2026
28AQI (US)
28AQI (US)
2nd August 2026
27AQI (US)
27AQI (US)
3rd August 2026
26AQI (US)
26AQI (US)
4th August 2026
29AQI (US)
29AQI (US)
5th August 2026
31AQI (US)
31AQI (US)
6th August 2026
28AQI (US)
28AQI (US)
7th August 2026
22AQI (US)
22AQI (US)
8th August 2026
29AQI (US)
29AQI (US)
9th August 2026
31AQI (US)
31AQI (US)
10th August 2026
26AQI (US)
26AQI (US)
11th August 2026
26AQI (US)
26AQI (US)
12th August 2026
25AQI (US)
25AQI (US)
13th August 2026
33AQI (US)
33AQI (US)
14th August 2026
29AQI (US)
29AQI (US)
15th August 2026
32AQI (US)
32AQI (US)
16th August 2026
33AQI (US)
33AQI (US)
17th August 2026
28AQI (US)
28AQI (US)
18th August 2026
26AQI (US)
26AQI (US)
19th August 2026
24AQI (US)
24AQI (US)
20th August 2026
22AQI (US)
22AQI (US)
21st August 2026
26AQI (US)
26AQI (US)
22nd August 2026
25AQI (US)
25AQI (US)
23rd August 2026
25AQI (US)
25AQI (US)
24th August 2026
21AQI (US)
21AQI (US)
25th August 2026
21AQI (US)
21AQI (US)
26th August 2026
22AQI (US)
22AQI (US)
27th August 2026
24AQI (US)
24AQI (US)
28th August 2026
25AQI (US)
25AQI (US)
29th August 2026
24AQI (US)
24AQI (US)
30th August 2026
24AQI (US)
24AQI (US)
31st August 2026
32AQI (US)
32AQI (US)
1st September 2026
28AQI (US)
28AQI (US)
2nd September 2026
26AQI (US)
26AQI (US)
3rd September 2026
25AQI (US)
25AQI (US)
4th September 2026
28AQI (US)
28AQI (US)
5th September 2026
29AQI (US)
29AQI (US)
6th September 2026
29AQI (US)
29AQI (US)
7th September 2026
23AQI (US)
23AQI (US)
8th September 2026
23AQI (US)
23AQI (US)
9th September 2026
22AQI (US)
22AQI (US)
10th September 2026
23AQI (US)
23AQI (US)
11th September 2026
21AQI (US)
21AQI (US)
12th September 2026
19AQI (US)
19AQI (US)
13th September 2026
16AQI (US)
16AQI (US)
14th September 2026
22AQI (US)
22AQI (US)
15th September 2026
47AQI (US)
47AQI (US)
16th September 2026
41AQI (US)
41AQI (US)
17th September 2026
18AQI (US)
18AQI (US)
18th September 2026
23AQI (US)
23AQI (US)
19th September 2026
21AQI (US)
21AQI (US)
20th September 2026
19AQI (US)
19AQI (US)
21st September 2026
19AQI (US)
19AQI (US)
22nd September 2026
18AQI (US)
18AQI (US)
23rd September 2026
18AQI (US)
18AQI (US)
24th September 2026
19AQI (US)
19AQI (US)
25th September 2026
20AQI (US)
20AQI (US)
26th September 2026
20AQI (US)
20AQI (US)
27th September 2026
20AQI (US)
20AQI (US)
28th September 2026
23AQI (US)
23AQI (US)
29th September 2026
30th September 2026
1st October 2026
2nd October 2026
3rd October 2026
4th October 2026
5th October 2026
6th October 2026
7th October 2026
8th October 2026
9th October 2026
10th October 2026
11th October 2026
12th October 2026
13th October 2026
14th October 2026
15th October 2026
16th October 2026
17th October 2026
18th October 2026
19th October 2026
20th October 2026
21st October 2026
22nd October 2026
23rd October 2026
24th October 2026
25th October 2026
26th October 2026
27th October 2026
28th October 2026
29th October 2026
30th October 2026
31st October 2026
1st November 2026
2nd November 2026
3rd November 2026
4th November 2026
5th November 2026
6th November 2026
7th November 2026
8th November 2026
9th November 2026
10th November 2026
11th November 2026
12th November 2026
13th November 2026
14th November 2026
15th November 2026
16th November 2026
17th November 2026
18th November 2026
19th November 2026
20th November 2026
21st November 2026
22nd November 2026
23rd November 2026
24th November 2026
25th November 2026
26th November 2026
27th November 2026
28th November 2026
29th November 2026
30th November 2026
1st December 2026
2nd December 2026
3rd December 2026
4th December 2026
5th December 2026
6th December 2026
7th December 2026
8th December 2026
9th December 2026
10th December 2026
11th December 2026
12th December 2026
13th December 2026
14th December 2026
15th December 2026
16th December 2026
17th December 2026
18th December 2026
19th December 2026
20th December 2026
21st December 2026
22nd December 2026
23rd December 2026
24th December 2026
25th December 2026
26th December 2026
27th December 2026
28th December 2026
29th December 2026
30th December 2026
31st December 2026
38AQI (US)
32AQI (US)
26AQI (US)
23AQI (US)
24AQI (US)
25AQI (US)
27AQI (US)
27AQI (US)
24AQI (US)
No. of days
Jan.Feb.Mar.Apr.MayJun.Jul.Aug.Sep.Oct.Nov.Dec.Total Days
202627AQI (US)
26
5
28
30
1
28
30
30
31
31
28
262
6
Highest AQI (US) recorded in
January38AQI (US)
Lowest AQI (US) recorded in
April23AQI (US)
202555AQI (US)
30
1
5
23
31
30
31
18
12
17
14
27
4
23
7
6
25
29
1
29
2
154
210
1
Highest AQI (US) recorded in
April75AQI (US)
Lowest AQI (US) recorded in
December37AQI (US)
202449AQI (US)
16
2
5
3
2
10
7
22
24
7
23
8
16
12
20
11
13
17
30
1
131
117
1
Highest AQI (US) recorded in
December76AQI (US)
Lowest AQI (US) recorded in
January4AQI (US)
202341AQI (US)
9
21
13
13
11
20
13
9
20
8
5
8
9
18
2
3
31
132
81
Highest AQI (US) recorded in
January55AQI (US)
Lowest AQI (US) recorded in
December4AQI (US)
202243AQI (US)
19
10
11
11
6
19
10
7
9
20
27
3
23
1
29
25
6
29
1
17
14
206
91
Highest AQI (US) recorded in
May58AQI (US)
Lowest AQI (US) recorded in
September28AQI (US)
202142AQI (US)
20
9
11
17
4
7
11
13
1
14
5
17
20
30
29
2
18
12
8
23
182
88
1
Highest AQI (US) recorded in
December57AQI (US)
Lowest AQI (US) recorded in
June22AQI (US)
202035AQI (US)
26
30
1
31
30
27
4
15
15
20
11
179
31
Highest AQI (US) recorded in
November48AQI (US)
Lowest AQI (US) recorded in
September22AQI (US)
Most & Least Polluted Years Over the Last 7 Years
Most Polluted Year Recorded
2025(Avg.)
55AQI (US)Least Polluted Year Recorded
2026(Avg.)
27AQI (US)Chalco's annual 2026 AQI (US) (27) shows an average percentage change of -37.6% (improved AQI (US)) compared to previous years: 2020 (35), 2021 (42), 2022 (43), 2023 (41), 2024 (49), 2025 (55).
