Chicago, Illinois, United States 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+
July Air Quality Analysis
Chicago, Illinois, United States
2025
2026
AQI
.
Days
AQI Trends: Highest and Lowest
Highest AQI recorded on
31st Jul 2025
103AQILowest AQI recorded on
3rd Jul 2026
22AQISame Day Analysis (16th July):
On this day, AQI across the 2 years varied significantly: 2026 ranks 1st highest AQI at 102 of Poor air quality on the same day.
Day & Night AQI Trend: 16th Jul - 17th Jul 2026
Chicago, Illinois, United States
AQI
Day
Night
.
5 AM16th Jul 2026
8 PM
4 AM17th Jul 2026
Day time
Avg. Highest Time
12PM16th Jul
211AQI
Avg. Lowest Time
8PM16th Jul
51AQI
Night time
Avg. Highest Time
4AM17th Jul
275AQI
Avg. Lowest Time
9PM16th Jul
50AQI
In the last 24 hours,
Chicago's AQI reached its highest point of 275 at 4 AM during the Night, while the lowest point, 50, was recorded at 9 PM during the Night between 16th Jul and 17th Jul 2026.
Day & Night AQI Trend : Jun - Jul 2026
Chicago, Illinois, United States
JunJul
18th - 19th19th - 20th20th - 21st21st - 22nd22nd - 23rd23rd - 24th24th - 25th25th - 26th26th - 27th27th - 28th28th - 29th29th - 30th30th - 01st01st - 02nd02nd - 03rd03rd - 04th04th - 05th05th - 06th06th - 07th07th - 08th08th - 09th09th - 10th10th - 11th11th - 12th12th - 13th13th - 14th14th - 15th15th - 16th16th - 17th17th
Day
Night
18th Jun 2026195 AMAQI
18th Jun 2026176 AMAQI
18th Jun 2026247 AMAQI
18th Jun 2026248 AMAQI
18th Jun 2026319 AMAQI
18th Jun 20262710 AMAQI
18th Jun 20263311 AMAQI
18th Jun 20263012 PMAQI
18th Jun 2026251 PMAQI
18th Jun 2026242 PMAQI
18th Jun 2026233 PMAQI
18th Jun 2026254 PMAQI
18th Jun 2026255 PMAQI
18th Jun 2026276 PMAQI
18th Jun 2026287 PMAQI
18th Jun 2026308 PMAQI
18th Jun 2026299 PMAQI
18th Jun 20263010 PMAQI
18th Jun 20262311 PMAQI
19th Jun 20261712 AMAQI
19th Jun 2026261 AMAQI
19th Jun 2026252 AMAQI
19th Jun 2026193 AMAQI
19th Jun 2026214 AMAQI
19°C15/25°C
19th Jun 2026195 AMAQI
19th Jun 2026216 AMAQI
19th Jun 2026197 AMAQI
19th Jun 2026208 AMAQI
19th Jun 2026259 AMAQI
19th Jun 20262010 AMAQI
19th Jun 20262211 AMAQI
19th Jun 20262712 PMAQI
19th Jun 2026251 PMAQI
19th Jun 2026252 PMAQI
19th Jun 2026253 PMAQI
19th Jun 2026254 PMAQI
19th Jun 2026265 PMAQI
19th Jun 2026256 PMAQI
19th Jun 2026187 PMAQI
19th Jun 2026188 PMAQI
19th Jun 2026129 PMAQI
19th Jun 20262010 PMAQI
19th Jun 20262311 PMAQI
20th Jun 20262512 AMAQI
20th Jun 2026221 AMAQI
20th Jun 2026252 AMAQI
20th Jun 2026143 AMAQI
20th Jun 2026164 AMAQI
20°C13/27°C
20th Jun 2026235 AMAQI
20th Jun 2026166 AMAQI
20th Jun 2026177 AMAQI
20th Jun 2026168 AMAQI
20th Jun 2026249 AMAQI
20th Jun 20262610 AMAQI
20th Jun 20262811 AMAQI
20th Jun 20262012 PMAQI
20th Jun 2026271 PMAQI
20th Jun 2026252 PMAQI
20th Jun 2026243 PMAQI
20th Jun 2026184 PMAQI
20th Jun 2026225 PMAQI
20th Jun 2026166 PMAQI
20th Jun 2026167 PMAQI
20th Jun 2026138 PMAQI
20th Jun 2026199 PMAQI
20th Jun 20262310 PMAQI
20th Jun 20262011 PMAQI
21st Jun 20262812 AMAQI
21st Jun 2026501 AMAQI
21st Jun 2026372 AMAQI
21st Jun 2026413 AMAQI
21st Jun 2026394 AMAQI
20°C15/26°C
21st Jun 2026185 AMAQI
21st Jun 2026246 AMAQI
21st Jun 2026187 AMAQI
21st Jun 2026198 AMAQI
21st Jun 2026219 AMAQI
21st Jun 20262210 AMAQI
21st Jun 20262411 AMAQI
21st Jun 20262512 PMAQI
21st Jun 2026261 PMAQI
21st Jun 2026262 PMAQI
21st Jun 2026303 PMAQI
21st Jun 2026214 PMAQI
21st Jun 2026225 PMAQI
21st Jun 2026206 PMAQI
21st Jun 2026207 PMAQI
21st Jun 2026148 PMAQI
21st Jun 2026149 PMAQI
21st Jun 20261110 PMAQI
21st Jun 20261911 PMAQI
22nd Jun 20261712 AMAQI
22nd Jun 2026141 AMAQI
22nd Jun 2026212 AMAQI
22nd Jun 2026123 AMAQI
22nd Jun 2026164 AMAQI
18°C14/24°C
22nd Jun 2026205 AMAQI
22nd Jun 2026146 AMAQI
22nd Jun 2026217 AMAQI
22nd Jun 2026318 AMAQI
22nd Jun 2026199 AMAQI
22nd Jun 20262110 AMAQI
22nd Jun 20262211 AMAQI
22nd Jun 20261812 PMAQI
22nd Jun 2026261 PMAQI
22nd Jun 2026232 PMAQI
22nd Jun 2026253 PMAQI
22nd Jun 2026264 PMAQI
22nd Jun 2026175 PMAQI
22nd Jun 2026276 PMAQI
22nd Jun 2026227 PMAQI
22nd Jun 2026198 PMAQI
22nd Jun 2026259 PMAQI
22nd Jun 20262510 PMAQI
22nd Jun 20261811 PMAQI
23rd Jun 20261912 AMAQI
23rd Jun 2026151 AMAQI
23rd Jun 2026252 AMAQI
23rd Jun 2026213 AMAQI
23rd Jun 2026124 AMAQI
17°C15/22°C
23rd Jun 2026155 AMAQI
23rd Jun 2026106 AMAQI
23rd Jun 2026167 AMAQI
23rd Jun 2026188 AMAQI
23rd Jun 2026129 AMAQI
23rd Jun 20261810 AMAQI
23rd Jun 20262611 AMAQI
23rd Jun 20262412 PMAQI
23rd Jun 2026251 PMAQI
23rd Jun 2026192 PMAQI
23rd Jun 2026163 PMAQI
23rd Jun 2026124 PMAQI
23rd Jun 2026115 PMAQI
23rd Jun 2026236 PMAQI
23rd Jun 2026187 PMAQI
23rd Jun 2026168 PMAQI
23rd Jun 2026179 PMAQI
23rd Jun 20261910 PMAQI
23rd Jun 20261911 PMAQI
24th Jun 20262212 AMAQI
24th Jun 2026211 AMAQI
24th Jun 2026222 AMAQI
24th Jun 2026253 AMAQI
24th Jun 2026234 AMAQI
18°C12/23°C
24th Jun 2026205 AMAQI
24th Jun 2026196 AMAQI
24th Jun 2026187 AMAQI
24th Jun 2026298 AMAQI
24th Jun 2026179 AMAQI
24th Jun 20262010 AMAQI
24th Jun 20262011 AMAQI
24th Jun 20262212 PMAQI
24th Jun 2026231 PMAQI
24th Jun 2026232 PMAQI
24th Jun 2026203 PMAQI
24th Jun 2026184 PMAQI
24th Jun 2026205 PMAQI
24th Jun 2026176 PMAQI
24th Jun 2026227 PMAQI
24th Jun 2026198 PMAQI
24th Jun 2026219 PMAQI
24th Jun 20262210 PMAQI
24th Jun 20262111 PMAQI
25th Jun 20262112 AMAQI
25th Jun 2026201 AMAQI
25th Jun 2026192 AMAQI
25th Jun 2026153 AMAQI
25th Jun 2026154 AMAQI
18°C13/25°C
25th Jun 2026225 AMAQI
25th Jun 2026196 AMAQI
25th Jun 2026207 AMAQI
25th Jun 2026218 AMAQI
25th Jun 2026229 AMAQI
25th Jun 20262110 AMAQI
25th Jun 20261711 AMAQI
25th Jun 20261712 PMAQI
25th Jun 2026181 PMAQI
25th Jun 2026212 PMAQI
25th Jun 2026143 PMAQI
25th Jun 2026164 PMAQI
25th Jun 2026155 PMAQI
25th Jun 2026186 PMAQI
25th Jun 2026187 PMAQI
25th Jun 2026288 PMAQI
25th Jun 2026219 PMAQI
25th Jun 20262010 PMAQI
25th Jun 20262511 PMAQI
26th Jun 20262712 AMAQI
26th Jun 2026201 AMAQI
26th Jun 2026232 AMAQI
26th Jun 2026133 AMAQI
26th Jun 2026144 AMAQI
20°C16/26°C
26th Jun 2026195 AMAQI
26th Jun 2026256 AMAQI
26th Jun 2026247 AMAQI
26th Jun 2026248 AMAQI
26th Jun 2026299 AMAQI
26th Jun 20263010 AMAQI
26th Jun 20262211 AMAQI
26th Jun 20262012 PMAQI
26th Jun 2026261 PMAQI
26th Jun 2026242 PMAQI
26th Jun 2026253 PMAQI
26th Jun 2026224 PMAQI
26th Jun 2026265 PMAQI
26th Jun 2026236 PMAQI
26th Jun 2026217 PMAQI
26th Jun 2026228 PMAQI
26th Jun 2026269 PMAQI
26th Jun 20262310 PMAQI
26th Jun 20262411 PMAQI
27th Jun 20263512 AMAQI
27th Jun 2026381 AMAQI
27th Jun 2026252 AMAQI
27th Jun 2026413 AMAQI
27th Jun 2026214 AMAQI
18°C14/22°C
27th Jun 2026295 AMAQI
27th Jun 2026316 AMAQI
27th Jun 2026257 AMAQI
27th Jun 2026298 AMAQI
27th Jun 2026309 AMAQI
27th Jun 20262910 AMAQI
27th Jun 20263011 AMAQI
27th Jun 20262712 PMAQI
27th Jun 2026251 PMAQI
27th Jun 2026302 PMAQI
27th Jun 2026213 PMAQI
27th Jun 2026334 PMAQI
27th Jun 2026235 PMAQI
27th Jun 2026226 PMAQI
27th Jun 2026327 PMAQI
27th Jun 2026278 PMAQI
27th Jun 2026409 PMAQI
27th Jun 20262810 PMAQI
27th Jun 20262511 PMAQI
28th Jun 20262212 AMAQI
28th Jun 2026261 AMAQI
28th Jun 2026472 AMAQI
28th Jun 2026163 AMAQI
28th Jun 2026144 AMAQI
20°C15/26°C
28th Jun 2026455 AMAQI
28th Jun 2026286 AMAQI
28th Jun 2026287 AMAQI
28th Jun 2026298 AMAQI
28th Jun 2026269 AMAQI
28th Jun 20262310 AMAQI
28th Jun 20262511 AMAQI
28th Jun 20263212 PMAQI
28th Jun 2026291 PMAQI
28th Jun 2026192 PMAQI
28th Jun 2026223 PMAQI
28th Jun 2026304 PMAQI
28th Jun 2026255 PMAQI
28th Jun 2026276 PMAQI
28th Jun 2026297 PMAQI
28th Jun 2026258 PMAQI
28th Jun 2026259 PMAQI
28th Jun 20262410 PMAQI
28th Jun 20262411 PMAQI
29th Jun 20262012 AMAQI
29th Jun 2026201 AMAQI
29th Jun 2026212 AMAQI
29th Jun 2026213 AMAQI
29th Jun 2026224 AMAQI
22°C17/29°C
29th Jun 2026245 AMAQI
29th Jun 2026226 AMAQI
29th Jun 2026237 AMAQI
29th Jun 2026238 AMAQI
29th Jun 2026259 AMAQI
29th Jun 20262610 AMAQI
29th Jun 20262911 AMAQI
29th Jun 20262912 PMAQI
29th Jun 2026291 PMAQI
29th Jun 2026262 PMAQI
29th Jun 2026383 PMAQI
29th Jun 2026264 PMAQI
29th Jun 2026305 PMAQI
29th Jun 2026266 PMAQI
29th Jun 2026357 PMAQI
29th Jun 2026288 PMAQI
29th Jun 2026289 PMAQI
29th Jun 20262810 PMAQI
29th Jun 20262811 PMAQI
30th Jun 20262912 AMAQI
30th Jun 2026291 AMAQI
30th Jun 2026352 AMAQI
30th Jun 2026423 AMAQI
30th Jun 2026334 AMAQI
29°C22/38°C
30th Jun 2026375 AMAQI
30th Jun 2026446 AMAQI
30th Jun 2026287 AMAQI
30th Jun 2026298 AMAQI
30th Jun 2026319 AMAQI
30th Jun 20263310 AMAQI
30th Jun 20264311 AMAQI
30th Jun 20264712 PMAQI
30th Jun 2026411 PMAQI
30th Jun 2026442 PMAQI
30th Jun 2026453 PMAQI
30th Jun 2026424 PMAQI
30th Jun 2026515 PMAQI
30th Jun 2026596 PMAQI
30th Jun 2026477 PMAQI
30th Jun 2026378 PMAQI
30th Jun 2026499 PMAQI
30th Jun 20264910 PMAQI
30th Jun 20264011 PMAQI
1st Jul 20264112 AMAQI
1st Jul 2026441 AMAQI
1st Jul 2026452 AMAQI
1st Jul 2026633 AMAQI
1st Jul 2026654 AMAQI
30°C25/38°C
1st Jul 2026435 AMAQI
1st Jul 2026406 AMAQI
1st Jul 2026367 AMAQI
1st Jul 2026408 AMAQI
1st Jul 2026419 AMAQI
1st Jul 20264310 AMAQI
1st Jul 20263711 AMAQI
1st Jul 20263812 PMAQI
1st Jul 2026381 PMAQI
1st Jul 2026602 PMAQI
1st Jul 2026613 PMAQI
1st Jul 2026554 PMAQI
1st Jul 2026395 PMAQI
1st Jul 2026386 PMAQI
1st Jul 2026367 PMAQI
1st Jul 2026338 PMAQI
1st Jul 2026309 PMAQI
1st Jul 20262610 PMAQI
1st Jul 20262611 PMAQI
2nd Jul 20263912 AMAQI
2nd Jul 2026281 AMAQI
2nd Jul 2026322 AMAQI
2nd Jul 2026383 AMAQI
2nd Jul 2026344 AMAQI
31°C24/38°C
2nd Jul 2026255 AMAQI
2nd Jul 2026256 AMAQI
2nd Jul 2026207 AMAQI
2nd Jul 2026208 AMAQI
2nd Jul 2026279 AMAQI
2nd Jul 20262510 AMAQI
2nd Jul 20261811 AMAQI
2nd Jul 20261912 PMAQI
2nd Jul 2026141 PMAQI
2nd Jul 2026162 PMAQI
2nd Jul 2026233 PMAQI
2nd Jul 2026194 PMAQI
2nd Jul 2026355 PMAQI
2nd Jul 2026346 PMAQI
2nd Jul 2026297 PMAQI
2nd Jul 2026268 PMAQI
2nd Jul 2026259 PMAQI
2nd Jul 20262210 PMAQI
2nd Jul 20262511 PMAQI
3rd Jul 20262312 AMAQI
3rd Jul 2026171 AMAQI
3rd Jul 2026232 AMAQI
3rd Jul 2026143 AMAQI
3rd Jul 2026194 AMAQI
29°C23/36°C
3rd Jul 2026275 AMAQI
3rd Jul 2026216 AMAQI
3rd Jul 2026247 AMAQI
3rd Jul 2026208 AMAQI
3rd Jul 2026209 AMAQI
3rd Jul 20262110 AMAQI
3rd Jul 20262711 AMAQI
3rd Jul 20262912 PMAQI
3rd Jul 2026231 PMAQI
3rd Jul 2026202 PMAQI
3rd Jul 2026213 PMAQI
3rd Jul 2026234 PMAQI
3rd Jul 2026175 PMAQI
3rd Jul 2026256 PMAQI
3rd Jul 2026227 PMAQI
3rd Jul 2026228 PMAQI
3rd Jul 2026219 PMAQI
3rd Jul 20262610 PMAQI
3rd Jul 20262911 PMAQI
4th Jul 20262712 AMAQI
4th Jul 2026301 AMAQI
4th Jul 2026392 AMAQI
4th Jul 2026303 AMAQI
4th Jul 2026124 AMAQI
27°C22/34°C
4th Jul 2026255 AMAQI
4th Jul 2026246 AMAQI
4th Jul 2026237 AMAQI
4th Jul 2026428 AMAQI
4th Jul 2026239 AMAQI
4th Jul 20262510 AMAQI
4th Jul 20264111 AMAQI
4th Jul 20262712 PMAQI
4th Jul 2026271 PMAQI
4th Jul 2026262 PMAQI
4th Jul 2026343 PMAQI
4th Jul 2026244 PMAQI
4th Jul 2026365 PMAQI
4th Jul 2026236 PMAQI
4th Jul 2026257 PMAQI
4th Jul 2026218 PMAQI
4th Jul 2026269 PMAQI
4th Jul 20263210 PMAQI
4th Jul 20267911 PMAQI
5th Jul 20266112 AMAQI
5th Jul 2026391 AMAQI
5th Jul 2026472 AMAQI
5th Jul 2026403 AMAQI
5th Jul 2026454 AMAQI
24°C21/30°C
5th Jul 2026315 AMAQI
5th Jul 2026446 AMAQI
5th Jul 2026267 AMAQI
5th Jul 2026438 AMAQI
5th Jul 2026439 AMAQI
5th Jul 20265510 AMAQI
5th Jul 20264911 AMAQI
5th Jul 20263212 PMAQI
5th Jul 2026551 PMAQI
5th Jul 2026452 PMAQI
5th Jul 2026563 PMAQI
5th Jul 2026444 PMAQI
5th Jul 2026475 PMAQI
5th Jul 2026426 PMAQI
5th Jul 2026477 PMAQI
5th Jul 2026458 PMAQI
5th Jul 2026309 PMAQI
5th Jul 20263510 PMAQI
5th Jul 20263211 PMAQI
6th Jul 20263412 AMAQI
6th Jul 2026291 AMAQI
6th Jul 2026492 AMAQI
6th Jul 2026453 AMAQI
6th Jul 2026464 AMAQI
20°C19/23°C
6th Jul 2026495 AMAQI
6th Jul 2026296 AMAQI
6th Jul 2026467 AMAQI
6th Jul 2026398 AMAQI
6th Jul 2026409 AMAQI
6th Jul 20262710 AMAQI
6th Jul 20263911 AMAQI
6th Jul 20263912 PMAQI
6th Jul 2026461 PMAQI
6th Jul 2026432 PMAQI
6th Jul 2026433 PMAQI
6th Jul 2026424 PMAQI
6th Jul 2026355 PMAQI
6th Jul 2026386 PMAQI
6th Jul 2026257 PMAQI
6th Jul 2026348 PMAQI
6th Jul 2026329 PMAQI
6th Jul 20263610 PMAQI
6th Jul 20264011 PMAQI
7th Jul 20263212 AMAQI
7th Jul 2026391 AMAQI
7th Jul 2026522 AMAQI
7th Jul 2026343 AMAQI
7th Jul 2026274 AMAQI
21°C18/25°C
7th Jul 2026415 AMAQI
7th Jul 2026376 AMAQI
7th Jul 2026367 AMAQI
7th Jul 2026338 AMAQI
7th Jul 2026339 AMAQI
7th Jul 20263410 AMAQI
7th Jul 20263111 AMAQI
7th Jul 20263412 PMAQI
7th Jul 2026411 PMAQI
7th Jul 2026372 PMAQI
7th Jul 2026313 PMAQI
7th Jul 2026394 PMAQI
7th Jul 2026435 PMAQI
7th Jul 2026386 PMAQI
7th Jul 2026337 PMAQI
7th Jul 2026378 PMAQI
7th Jul 2026419 PMAQI
7th Jul 20264110 PMAQI
7th Jul 20263111 PMAQI
8th Jul 20264112 AMAQI
8th Jul 2026441 AMAQI
8th Jul 2026402 AMAQI
8th Jul 2026413 AMAQI
8th Jul 2026444 AMAQI
22°C17/29°C
8th Jul 2026415 AMAQI
8th Jul 2026406 AMAQI
8th Jul 2026417 AMAQI
8th Jul 2026428 AMAQI
8th Jul 2026409 AMAQI
8th Jul 20263310 AMAQI
8th Jul 20263511 AMAQI
8th Jul 20263212 PMAQI
8th Jul 2026321 PMAQI
8th Jul 2026322 PMAQI
8th Jul 2026293 PMAQI
8th Jul 2026414 PMAQI
8th Jul 2026415 PMAQI
8th Jul 2026346 PMAQI
8th Jul 2026357 PMAQI
8th Jul 2026348 PMAQI
8th Jul 2026339 PMAQI
8th Jul 20263310 PMAQI
8th Jul 20263611 PMAQI
9th Jul 20263212 AMAQI
9th Jul 2026401 AMAQI
9th Jul 2026372 AMAQI
9th Jul 2026473 AMAQI
9th Jul 2026284 AMAQI
25°C18/33°C
9th Jul 2026205 AMAQI
9th Jul 2026256 AMAQI
9th Jul 2026397 AMAQI
9th Jul 2026298 AMAQI
9th Jul 2026369 AMAQI
9th Jul 20263110 AMAQI
9th Jul 20263011 AMAQI
9th Jul 20262812 PMAQI
9th Jul 2026351 PMAQI
9th Jul 2026312 PMAQI
9th Jul 2026293 PMAQI
9th Jul 2026204 PMAQI
9th Jul 2026255 PMAQI
9th Jul 2026256 PMAQI
9th Jul 2026257 PMAQI
9th Jul 2026218 PMAQI
9th Jul 2026239 PMAQI
9th Jul 20262010 PMAQI
9th Jul 20261911 PMAQI
10th Jul 20262212 AMAQI
10th Jul 2026211 AMAQI
10th Jul 2026202 AMAQI
10th Jul 2026133 AMAQI
10th Jul 2026334 AMAQI
26°C21/32°C
10th Jul 2026325 AMAQI
10th Jul 2026356 AMAQI
10th Jul 2026207 AMAQI
10th Jul 2026308 AMAQI
10th Jul 2026209 AMAQI
10th Jul 20261910 AMAQI
10th Jul 20261811 AMAQI
10th Jul 20262012 PMAQI
10th Jul 2026171 PMAQI
10th Jul 2026192 PMAQI
10th Jul 2026233 PMAQI
10th Jul 2026244 PMAQI
10th Jul 2026365 PMAQI
10th Jul 2026296 PMAQI
10th Jul 2026317 PMAQI
10th Jul 2026268 PMAQI
10th Jul 2026269 PMAQI
10th Jul 20263010 PMAQI
10th Jul 20262711 PMAQI
11th Jul 20263512 AMAQI
11th Jul 2026311 AMAQI
11th Jul 2026352 AMAQI
11th Jul 2026633 AMAQI
11th Jul 2026524 AMAQI
25°C21/30°C
11th Jul 2026515 AMAQI
11th Jul 2026436 AMAQI
11th Jul 2026437 AMAQI
11th Jul 2026438 AMAQI
11th Jul 2026409 AMAQI
11th Jul 20263910 AMAQI
11th Jul 20263811 AMAQI
11th Jul 20264112 PMAQI
11th Jul 2026381 PMAQI
11th Jul 2026332 PMAQI
11th Jul 2026253 PMAQI
11th Jul 2026284 PMAQI
11th Jul 2026295 PMAQI
11th Jul 2026266 PMAQI
11th Jul 2026317 PMAQI
11th Jul 2026408 PMAQI
11th Jul 2026409 PMAQI
11th Jul 20264610 PMAQI
11th Jul 20262811 PMAQI
12th Jul 20264112 AMAQI
12th Jul 2026321 AMAQI
12th Jul 2026272 AMAQI
12th Jul 2026343 AMAQI
12th Jul 2026274 AMAQI
24°C19/29°C
12th Jul 2026415 AMAQI
12th Jul 2026396 AMAQI
12th Jul 2026417 AMAQI
12th Jul 2026378 AMAQI
12th Jul 2026449 AMAQI
12th Jul 20264910 AMAQI
12th Jul 20264811 AMAQI
12th Jul 20264412 PMAQI
12th Jul 2026371 PMAQI
12th Jul 2026322 PMAQI
12th Jul 2026363 PMAQI
12th Jul 2026494 PMAQI
12th Jul 2026485 PMAQI
12th Jul 2026436 PMAQI
12th Jul 2026377 PMAQI
12th Jul 2026388 PMAQI
12th Jul 2026419 PMAQI
12th Jul 20264310 PMAQI
12th Jul 20264311 PMAQI
13th Jul 20264812 AMAQI
13th Jul 2026421 AMAQI
13th Jul 2026442 AMAQI
13th Jul 2026473 AMAQI
13th Jul 2026474 AMAQI
26°C20/33°C
13th Jul 2026455 AMAQI
13th Jul 2026496 AMAQI
13th Jul 2026447 AMAQI
13th Jul 2026408 AMAQI
13th Jul 2026399 AMAQI
13th Jul 20265110 AMAQI
13th Jul 20264811 AMAQI
13th Jul 20264712 PMAQI
13th Jul 2026351 PMAQI
13th Jul 2026402 PMAQI
13th Jul 2026323 PMAQI
13th Jul 2026364 PMAQI
13th Jul 2026375 PMAQI
13th Jul 2026386 PMAQI
13th Jul 2026467 PMAQI
13th Jul 2026428 PMAQI
13th Jul 2026449 PMAQI
13th Jul 20264410 PMAQI
13th Jul 20264011 PMAQI
14th Jul 20263312 AMAQI
14th Jul 2026481 AMAQI
14th Jul 2026472 AMAQI
14th Jul 2026463 AMAQI
14th Jul 2026474 AMAQI
26°C19/35°C
14th Jul 2026355 AMAQI
14th Jul 2026336 AMAQI
14th Jul 2026357 AMAQI
14th Jul 2026368 AMAQI
14th Jul 2026369 AMAQI
14th Jul 20263610 AMAQI
14th Jul 20263311 AMAQI
14th Jul 20264312 PMAQI
14th Jul 2026351 PMAQI
14th Jul 2026382 PMAQI
14th Jul 2026353 PMAQI
14th Jul 2026284 PMAQI
14th Jul 2026325 PMAQI
14th Jul 2026366 PMAQI
14th Jul 2026387 PMAQI
14th Jul 2026318 PMAQI
14th Jul 2026279 PMAQI
14th Jul 20262710 PMAQI
14th Jul 20262511 PMAQI
15th Jul 20262312 AMAQI
15th Jul 2026381 AMAQI
15th Jul 2026822 AMAQI
15th Jul 2026393 AMAQI
15th Jul 2026264 AMAQI
29°C21/37°C
15th Jul 2026305 AMAQI
15th Jul 2026316 AMAQI
15th Jul 2026767 AMAQI
15th Jul 2026288 AMAQI
15th Jul 2026429 AMAQI
15th Jul 20264010 AMAQI
15th Jul 20263911 AMAQI
15th Jul 20264512 PMAQI
15th Jul 2026511 PMAQI
15th Jul 2026492 PMAQI
15th Jul 2026403 PMAQI
15th Jul 2026394 PMAQI
15th Jul 2026295 PMAQI
15th Jul 2026496 PMAQI
15th Jul 2026397 PMAQI
15th Jul 2026418 PMAQI
15th Jul 2026679 PMAQI
15th Jul 20269510 PMAQI
15th Jul 20269211 PMAQI
16th Jul 202611012 AMAQI
16th Jul 2026401 AMAQI
16th Jul 2026522 AMAQI
16th Jul 2026413 AMAQI
16th Jul 2026804 AMAQI
30°C24/38°C
16th Jul 2026935 AMAQI
16th Jul 20261766 AMAQI
16th Jul 20261307 AMAQI
16th Jul 20261628 AMAQI
16th Jul 20261019 AMAQI
16th Jul 20266710 AMAQI
16th Jul 20266211 AMAQI
16th Jul 202621112 PMAQI
16th Jul 2026541 PMAQI
16th Jul 20261292 PMAQI
16th Jul 20261273 PMAQI
16th Jul 20261194 PMAQI
16th Jul 20261515 PMAQI
16th Jul 2026746 PMAQI
16th Jul 20261227 PMAQI
16th Jul 2026518 PMAQI
16th Jul 2026509 PMAQI
16th Jul 20269810 PMAQI
16th Jul 202613711 PMAQI
17th Jul 202610312 AMAQI
17th Jul 2026681 AMAQI
17th Jul 20261862 AMAQI
17th Jul 20262303 AMAQI
17th Jul 20262754 AMAQI
27°C23/33°C
17th Jul 20262655 AMAQI
5 AM17th Jul 20262706 AMAQI
17th Jul 20262587 AMAQI
17th Jul 20262528 AMAQI
17th Jul 20262529 AMAQI
17th Jul 202624310 AMAQI
17th Jul 202621811 AMAQI
17th Jul 202619912 PMAQI
12 PM17th Jul 20261221 PMAQI
17th Jul 20261832 PMAQI
17th Jul 20261853 PMAQI
17th Jul 20261524 PMAQI
17th Jul 20261295 PMAQI
17th Jul 20261126 PMAQI
17th Jul 20261067 PMAQI
17th Jul 2026978 PMAQI
8 PM17th Jul 20262449 PMAQI
17th Jul 202621710 PMAQI
17th Jul 202619811 PMAQI
12 AM
4 AM
29°C23/36°C
Day time
Avg. Highest Time
6 AM - 8 AM
42AQI
3 hours / Day
90 hours / Month
Avg. Lowest Time
8 PM
31AQI
1 hours / Day
30 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 6 AM to 8 AM (Avg. 42), while the lowest AQI was between 8 PM to 8 PM (Avg. 31).
Night time
Avg. Highest Time
10 PM - 11 PM
41AQI
2 hours / Day
60 hours / Month
Avg. Lowest Time
1 AM
32AQI
1 hours / Day
30 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 10 PM to 11 PM (Avg. 41), while the lowest AQI was between 1 AM to 1 AM (Avg. 32).
2026 Days Vs Air Quality
Chicago, Illinois, United States
2026
94%
183
5%
10
0.5%
1
Total number of days with different AQI categories in last 198 days in 2026 (167 days remaining)
Good
183 DaysModerate
10 DaysPoor
1 DaysUnhealthy
0 DaysSevere
0 DaysHazardous
0 DaysUnder WHO’s Safe Air Quality Limits: 94%
Health Risk Level:
Very Low
In 2026, 94% of 198 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
Chicago, Illinois, United States
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
19AQI (US)
19AQI (US)
2nd January 2026
27AQI (US)
27AQI (US)
3rd January 2026
31AQI (US)
31AQI (US)
4th January 2026
32AQI (US)
32AQI (US)
5th January 2026
47AQI (US)
47AQI (US)
6th January 2026
70AQI (US)
70AQI (US)
7th January 2026
56AQI (US)
56AQI (US)
8th January 2026
48AQI (US)
48AQI (US)
9th January 2026
25AQI (US)
25AQI (US)
10th January 2026
28AQI (US)
28AQI (US)
11th January 2026
22AQI (US)
22AQI (US)
12th January 2026
21AQI (US)
21AQI (US)
13th January 2026
27AQI (US)
27AQI (US)
14th January 2026
16AQI (US)
16AQI (US)
15th January 2026
14AQI (US)
14AQI (US)
16th January 2026
22AQI (US)
22AQI (US)
17th January 2026
18AQI (US)
18AQI (US)
18th January 2026
18AQI (US)
18AQI (US)
19th January 2026
20AQI (US)
20AQI (US)
20th January 2026
22AQI (US)
22AQI (US)
21st January 2026
34AQI (US)
34AQI (US)
22nd January 2026
53AQI (US)
53AQI (US)
23rd January 2026
56AQI (US)
56AQI (US)
24th January 2026
46AQI (US)
46AQI (US)
25th January 2026
49AQI (US)
49AQI (US)
26th January 2026
46AQI (US)
46AQI (US)
27th January 2026
35AQI (US)
35AQI (US)
28th January 2026
39AQI (US)
39AQI (US)
29th January 2026
45AQI (US)
45AQI (US)
30th January 2026
58AQI (US)
58AQI (US)
31st January 2026
43AQI (US)
43AQI (US)
1st February 2026
44AQI (US)
44AQI (US)
2nd February 2026
49AQI (US)
49AQI (US)
3rd February 2026
46AQI (US)
46AQI (US)
4th February 2026
43AQI (US)
43AQI (US)
5th February 2026
49AQI (US)
49AQI (US)
6th February 2026
45AQI (US)
45AQI (US)
7th February 2026
39AQI (US)
39AQI (US)
8th February 2026
41AQI (US)
41AQI (US)
9th February 2026
47AQI (US)
47AQI (US)
10th February 2026
44AQI (US)
44AQI (US)
11th February 2026
37AQI (US)
37AQI (US)
12th February 2026
35AQI (US)
35AQI (US)
13th February 2026
43AQI (US)
43AQI (US)
14th February 2026
46AQI (US)
46AQI (US)
15th February 2026
47AQI (US)
47AQI (US)
16th February 2026
42AQI (US)
42AQI (US)
17th February 2026
45AQI (US)
45AQI (US)
18th February 2026
43AQI (US)
43AQI (US)
19th February 2026
38AQI (US)
38AQI (US)
20th February 2026
37AQI (US)
37AQI (US)
21st February 2026
35AQI (US)
35AQI (US)
22nd February 2026
35AQI (US)
35AQI (US)
23rd February 2026
38AQI (US)
38AQI (US)
24th February 2026
40AQI (US)
40AQI (US)
25th February 2026
38AQI (US)
38AQI (US)
26th February 2026
33AQI (US)
33AQI (US)
27th February 2026
32AQI (US)
32AQI (US)
28th February 2026
34AQI (US)
34AQI (US)
1st March 2026
38AQI (US)
38AQI (US)
2nd March 2026
54AQI (US)
54AQI (US)
3rd March 2026
40AQI (US)
40AQI (US)
4th March 2026
43AQI (US)
43AQI (US)
5th March 2026
43AQI (US)
43AQI (US)
6th March 2026
37AQI (US)
37AQI (US)
7th March 2026
35AQI (US)
35AQI (US)
8th March 2026
40AQI (US)
40AQI (US)
9th March 2026
36AQI (US)
36AQI (US)
10th March 2026
33AQI (US)
33AQI (US)
11th March 2026
41AQI (US)
41AQI (US)
12th March 2026
38AQI (US)
38AQI (US)
13th March 2026
39AQI (US)
39AQI (US)
14th March 2026
36AQI (US)
36AQI (US)
15th March 2026
30AQI (US)
30AQI (US)
16th March 2026
36AQI (US)
36AQI (US)
17th March 2026
33AQI (US)
33AQI (US)
18th March 2026
29AQI (US)
29AQI (US)
19th March 2026
38AQI (US)
38AQI (US)
20th March 2026
40AQI (US)
40AQI (US)
21st March 2026
39AQI (US)
39AQI (US)
22nd March 2026
34AQI (US)
34AQI (US)
23rd March 2026
39AQI (US)
39AQI (US)
24th March 2026
32AQI (US)
32AQI (US)
25th March 2026
31AQI (US)
31AQI (US)
26th March 2026
33AQI (US)
33AQI (US)
27th March 2026
29AQI (US)
29AQI (US)
28th March 2026
29AQI (US)
29AQI (US)
29th March 2026
28AQI (US)
28AQI (US)
30th March 2026
27AQI (US)
27AQI (US)
31st March 2026
27AQI (US)
27AQI (US)
1st April 2026
29AQI (US)
29AQI (US)
2nd April 2026
26AQI (US)
26AQI (US)
3rd April 2026
28AQI (US)
28AQI (US)
4th April 2026
29AQI (US)
29AQI (US)
5th April 2026
31AQI (US)
31AQI (US)
6th April 2026
31AQI (US)
31AQI (US)
7th April 2026
28AQI (US)
28AQI (US)
8th April 2026
32AQI (US)
32AQI (US)
9th April 2026
27AQI (US)
27AQI (US)
10th April 2026
32AQI (US)
32AQI (US)
11th April 2026
29AQI (US)
29AQI (US)
12th April 2026
27AQI (US)
27AQI (US)
13th April 2026
29AQI (US)
29AQI (US)
14th April 2026
29AQI (US)
29AQI (US)
15th April 2026
31AQI (US)
31AQI (US)
16th April 2026
29AQI (US)
29AQI (US)
17th April 2026
18th April 2026
28AQI (US)
28AQI (US)
19th April 2026
32AQI (US)
32AQI (US)
20th April 2026
27AQI (US)
27AQI (US)
21st April 2026
23AQI (US)
23AQI (US)
22nd April 2026
23rd April 2026
24AQI (US)
24AQI (US)
24th April 2026
25AQI (US)
25AQI (US)
25th April 2026
27AQI (US)
27AQI (US)
26th April 2026
33AQI (US)
33AQI (US)
27th April 2026
23AQI (US)
23AQI (US)
28th April 2026
24AQI (US)
24AQI (US)
29th April 2026
24AQI (US)
24AQI (US)
30th April 2026
26AQI (US)
26AQI (US)
1st May 2026
25AQI (US)
25AQI (US)
2nd May 2026
24AQI (US)
24AQI (US)
3rd May 2026
22AQI (US)
22AQI (US)
4th May 2026
33AQI (US)
33AQI (US)
5th May 2026
37AQI (US)
37AQI (US)
6th May 2026
29AQI (US)
29AQI (US)
7th May 2026
26AQI (US)
26AQI (US)
8th May 2026
31AQI (US)
31AQI (US)
9th May 2026
10th May 2026
31AQI (US)
31AQI (US)
11th May 2026
29AQI (US)
29AQI (US)
12th May 2026
25AQI (US)
25AQI (US)
13th May 2026
27AQI (US)
27AQI (US)
14th May 2026
25AQI (US)
25AQI (US)
15th May 2026
38AQI (US)
38AQI (US)
16th May 2026
50AQI (US)
50AQI (US)
17th May 2026
51AQI (US)
51AQI (US)
18th May 2026
56AQI (US)
56AQI (US)
19th May 2026
53AQI (US)
53AQI (US)
20th May 2026
51AQI (US)
51AQI (US)
21st May 2026
44AQI (US)
44AQI (US)
22nd May 2026
42AQI (US)
42AQI (US)
23rd May 2026
46AQI (US)
46AQI (US)
24th May 2026
44AQI (US)
44AQI (US)
25th May 2026
43AQI (US)
43AQI (US)
26th May 2026
32AQI (US)
32AQI (US)
27th May 2026
26AQI (US)
26AQI (US)
28th May 2026
16AQI (US)
16AQI (US)
29th May 2026
20AQI (US)
20AQI (US)
30th May 2026
26AQI (US)
26AQI (US)
31st May 2026
25AQI (US)
25AQI (US)
1st June 2026
29AQI (US)
29AQI (US)
2nd June 2026
22AQI (US)
22AQI (US)
3rd June 2026
22AQI (US)
22AQI (US)
4th June 2026
25AQI (US)
25AQI (US)
5th June 2026
30AQI (US)
30AQI (US)
6th June 2026
21AQI (US)
21AQI (US)
7th June 2026
24AQI (US)
24AQI (US)
8th June 2026
24AQI (US)
24AQI (US)
9th June 2026
22AQI (US)
22AQI (US)
10th June 2026
22AQI (US)
22AQI (US)
11th June 2026
23AQI (US)
23AQI (US)
12th June 2026
23AQI (US)
23AQI (US)
13th June 2026
21AQI (US)
21AQI (US)
14th June 2026
20AQI (US)
20AQI (US)
15th June 2026
22AQI (US)
22AQI (US)
16th June 2026
24AQI (US)
24AQI (US)
17th June 2026
23AQI (US)
23AQI (US)
18th June 2026
25AQI (US)
25AQI (US)
19th June 2026
22AQI (US)
22AQI (US)
20th June 2026
20AQI (US)
20AQI (US)
21st June 2026
25AQI (US)
25AQI (US)
22nd June 2026
21AQI (US)
21AQI (US)
23rd June 2026
18AQI (US)
18AQI (US)
24th June 2026
21AQI (US)
21AQI (US)
25th June 2026
19AQI (US)
19AQI (US)
26th June 2026
23AQI (US)
23AQI (US)
27th June 2026
29AQI (US)
29AQI (US)
28th June 2026
27AQI (US)
27AQI (US)
29th June 2026
26AQI (US)
26AQI (US)
30th June 2026
40AQI (US)
40AQI (US)
1st July 2026
43AQI (US)
43AQI (US)
2nd July 2026
26AQI (US)
26AQI (US)
3rd July 2026
22AQI (US)
22AQI (US)
4th July 2026
30AQI (US)
30AQI (US)
5th July 2026
43AQI (US)
43AQI (US)
6th July 2026
39AQI (US)
39AQI (US)
7th July 2026
36AQI (US)
36AQI (US)
8th July 2026
37AQI (US)
37AQI (US)
9th July 2026
29AQI (US)
29AQI (US)
10th July 2026
25AQI (US)
25AQI (US)
11th July 2026
38AQI (US)
38AQI (US)
12th July 2026
40AQI (US)
40AQI (US)
13th July 2026
43AQI (US)
43AQI (US)
14th July 2026
36AQI (US)
36AQI (US)
15th July 2026
47AQI (US)
47AQI (US)
16th July 2026
102AQI (US)
102AQI (US)
17th July 2026
18th July 2026
19th July 2026
20th July 2026
21st July 2026
22nd July 2026
23rd July 2026
24th July 2026
25th July 2026
26th July 2026
27th July 2026
28th July 2026
29th July 2026
30th July 2026
31st July 2026
1st August 2026
2nd August 2026
3rd August 2026
4th August 2026
5th August 2026
6th August 2026
7th August 2026
8th August 2026
9th August 2026
10th August 2026
11th August 2026
12th August 2026
13th August 2026
14th August 2026
15th August 2026
16th August 2026
17th August 2026
18th August 2026
19th August 2026
20th August 2026
21st August 2026
22nd August 2026
23rd August 2026
24th August 2026
25th August 2026
26th August 2026
27th August 2026
28th August 2026
29th August 2026
30th August 2026
31st August 2026
1st September 2026
2nd September 2026
3rd September 2026
4th September 2026
5th September 2026
6th September 2026
7th September 2026
8th September 2026
9th September 2026
10th September 2026
11th September 2026
12th September 2026
13th September 2026
14th September 2026
15th September 2026
16th September 2026
17th September 2026
18th September 2026
19th September 2026
20th September 2026
21st September 2026
22nd September 2026
23rd September 2026
24th September 2026
25th September 2026
26th September 2026
27th September 2026
28th September 2026
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
35AQI (US)
41AQI (US)
36AQI (US)
28AQI (US)
34AQI (US)
24AQI (US)
40AQI (US)
No. of days
Jan.Feb.Mar.Apr.MayJun.Jul.Aug.Sep.Oct.Nov.Dec.Total Days
202633AQI (US)
26
5
28
30
1
28
26
4
30
15
1
183
10
1
Highest AQI (US) recorded in
February41AQI (US)
Lowest AQI (US) recorded in
June24AQI (US)
202542AQI (US)
1
1
28
3
28
2
31
16
14
14
16
1
19
12
17
13
24
7
20
10
19
12
217
90
1
Highest AQI (US) recorded in
June54AQI (US)
Lowest AQI (US) recorded in
May28AQI (US)
Most & Least Polluted Years Over the Last 2 Years
Most Polluted Year Recorded
2025(Avg.)
42AQI (US)Least Polluted Year Recorded
2026(Avg.)
33AQI (US)Chicago's annual 2026 AQI (US) (33) shows an average percentage change of -21.4% (improved AQI (US)) compared to previous years: 2025 (42).
