Chi, Chur, Graubunden, Switzerland 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+
August Air Quality Analysis
Chi, Chur, Graubunden, Switzerland
2022
2023
2024
2025
2026
AQI
.
Days
AQI Trends: Highest and Lowest
Highest AQI recorded on
13th Aug 2025
60AQILowest AQI recorded on
31st Aug 2023
14AQISame Day Analysis (4th August):
On this day, AQI across the 5 years varied significantly: 2026 ranks 1st highest AQI at 50 of Good air quality on the same day.
Day & Night AQI Trend: 3rd Aug - 4th Aug 2026
Chi, Chur, Graubunden, Switzerland
AQI
Day
Night
.
5 AM3rd Aug 2026
9 PM
4 AM4th Aug 2026
Day time
Avg. Highest Time
3PM3rd Aug
63AQI
Avg. Lowest Time
6AM3rd Aug
31AQI
Night time
Avg. Highest Time
2AM4th Aug
50AQI
Avg. Lowest Time
5AM3rd Aug
27AQI
In the last 24 hours,
Chi's AQI reached its highest point of 63 at 3 PM during the Day, while the lowest point, 27, was recorded at 5 AM during the Night between 3rd Aug and 4th Aug 2026.
Day & Night AQI Trend : Jul - Aug 2026
Chi, Chur, Graubunden, Switzerland
JulAug
06th - 07th07th - 08th08th - 09th09th - 10th10th - 11th11th - 12th12th - 13th13th - 14th14th - 15th15th - 16th16th - 17th17th - 18th18th - 19th19th - 20th20th - 21st21st - 22nd22nd - 23rd23rd - 24th24th - 25th25th - 26th26th - 27th27th - 28th28th - 29th29th - 30th30th - 31st31st - 01st01st - 02nd02nd - 03rd03rd - 04th04th
Day
Night
6th Jul 202685 AMAQI
6th Jul 2026126 AMAQI
6th Jul 2026177 AMAQI
6th Jul 2026158 AMAQI
6th Jul 2026109 AMAQI
6th Jul 20261210 AMAQI
6th Jul 20261211 AMAQI
6th Jul 20261412 PMAQI
6th Jul 2026201 PMAQI
6th Jul 2026212 PMAQI
6th Jul 2026203 PMAQI
6th Jul 2026244 PMAQI
6th Jul 2026175 PMAQI
6th Jul 2026236 PMAQI
6th Jul 2026227 PMAQI
6th Jul 2026288 PMAQI
6th Jul 2026169 PMAQI
6th Jul 20261810 PMAQI
6th Jul 20262011 PMAQI
7th Jul 20262512 AMAQI
7th Jul 2026261 AMAQI
7th Jul 2026222 AMAQI
7th Jul 202673 AMAQI
7th Jul 202694 AMAQI
14°C9/20°C
7th Jul 2026125 AMAQI
7th Jul 2026126 AMAQI
7th Jul 2026127 AMAQI
7th Jul 2026208 AMAQI
7th Jul 2026169 AMAQI
7th Jul 20261710 AMAQI
7th Jul 20261811 AMAQI
7th Jul 20262212 PMAQI
7th Jul 2026211 PMAQI
7th Jul 2026202 PMAQI
7th Jul 2026123 PMAQI
7th Jul 2026144 PMAQI
7th Jul 2026205 PMAQI
7th Jul 2026246 PMAQI
7th Jul 2026147 PMAQI
7th Jul 2026128 PMAQI
7th Jul 2026199 PMAQI
7th Jul 20262010 PMAQI
7th Jul 20262511 PMAQI
8th Jul 20262612 AMAQI
8th Jul 2026271 AMAQI
8th Jul 2026262 AMAQI
8th Jul 2026183 AMAQI
8th Jul 2026124 AMAQI
16°C10/23°C
8th Jul 2026105 AMAQI
8th Jul 2026126 AMAQI
8th Jul 2026127 AMAQI
8th Jul 2026168 AMAQI
8th Jul 2026229 AMAQI
8th Jul 20262110 AMAQI
8th Jul 20262111 AMAQI
8th Jul 20262012 PMAQI
8th Jul 2026211 PMAQI
8th Jul 2026222 PMAQI
8th Jul 2026263 PMAQI
8th Jul 2026294 PMAQI
8th Jul 2026165 PMAQI
8th Jul 2026206 PMAQI
8th Jul 2026387 PMAQI
8th Jul 2026598 PMAQI
8th Jul 2026389 PMAQI
8th Jul 20261610 PMAQI
8th Jul 20261811 PMAQI
9th Jul 20261612 AMAQI
9th Jul 2026221 AMAQI
9th Jul 2026242 AMAQI
9th Jul 2026193 AMAQI
9th Jul 2026324 AMAQI
15°C11/21°C
9th Jul 2026175 AMAQI
9th Jul 2026176 AMAQI
9th Jul 2026257 AMAQI
9th Jul 2026248 AMAQI
9th Jul 2026229 AMAQI
9th Jul 20262410 AMAQI
9th Jul 20261911 AMAQI
9th Jul 20261912 PMAQI
9th Jul 2026381 PMAQI
9th Jul 2026172 PMAQI
9th Jul 2026183 PMAQI
9th Jul 2026184 PMAQI
9th Jul 2026205 PMAQI
9th Jul 2026206 PMAQI
9th Jul 2026117 PMAQI
9th Jul 2026168 PMAQI
9th Jul 2026189 PMAQI
9th Jul 20261810 PMAQI
9th Jul 20261811 PMAQI
10th Jul 20261912 AMAQI
10th Jul 2026231 AMAQI
10th Jul 2026222 AMAQI
10th Jul 2026163 AMAQI
10th Jul 2026214 AMAQI
16°C10/23°C
10th Jul 2026215 AMAQI
10th Jul 2026216 AMAQI
10th Jul 2026187 AMAQI
10th Jul 2026238 AMAQI
10th Jul 2026249 AMAQI
10th Jul 20261410 AMAQI
10th Jul 20261711 AMAQI
10th Jul 20262112 PMAQI
10th Jul 2026131 PMAQI
10th Jul 2026142 PMAQI
10th Jul 2026213 PMAQI
10th Jul 2026154 PMAQI
10th Jul 2026165 PMAQI
10th Jul 2026166 PMAQI
10th Jul 2026107 PMAQI
10th Jul 2026148 PMAQI
10th Jul 2026199 PMAQI
10th Jul 20261210 PMAQI
10th Jul 2026811 PMAQI
11th Jul 2026812 AMAQI
11th Jul 2026191 AMAQI
11th Jul 2026312 AMAQI
11th Jul 2026313 AMAQI
11th Jul 2026194 AMAQI
18°C11/25°C
11th Jul 2026195 AMAQI
11th Jul 2026196 AMAQI
11th Jul 2026227 AMAQI
11th Jul 2026168 AMAQI
11th Jul 2026189 AMAQI
11th Jul 20262810 AMAQI
11th Jul 20262511 AMAQI
11th Jul 20263012 PMAQI
11th Jul 2026261 PMAQI
11th Jul 2026282 PMAQI
11th Jul 2026323 PMAQI
11th Jul 2026284 PMAQI
11th Jul 2026275 PMAQI
11th Jul 2026266 PMAQI
11th Jul 2026287 PMAQI
11th Jul 2026288 PMAQI
11th Jul 2026289 PMAQI
11th Jul 20262810 PMAQI
11th Jul 20262711 PMAQI
12th Jul 20262812 AMAQI
12th Jul 2026281 AMAQI
12th Jul 2026282 AMAQI
12th Jul 2026263 AMAQI
12th Jul 2026224 AMAQI
17°C11/24°C
12th Jul 2026215 AMAQI
12th Jul 2026196 AMAQI
12th Jul 2026217 AMAQI
12th Jul 2026208 AMAQI
12th Jul 2026199 AMAQI
12th Jul 20262310 AMAQI
12th Jul 20262211 AMAQI
12th Jul 20262112 PMAQI
12th Jul 2026241 PMAQI
12th Jul 2026282 PMAQI
12th Jul 2026273 PMAQI
12th Jul 2026264 PMAQI
12th Jul 2026245 PMAQI
12th Jul 2026266 PMAQI
12th Jul 2026227 PMAQI
12th Jul 2026248 PMAQI
12th Jul 2026229 PMAQI
12th Jul 20262410 PMAQI
12th Jul 20262211 PMAQI
13th Jul 20262112 AMAQI
13th Jul 2026241 AMAQI
13th Jul 2026242 AMAQI
13th Jul 2026263 AMAQI
13th Jul 2026194 AMAQI
17°C11/23°C
13th Jul 2026215 AMAQI
13th Jul 2026216 AMAQI
13th Jul 2026227 AMAQI
13th Jul 2026198 AMAQI
13th Jul 2026229 AMAQI
13th Jul 20262410 AMAQI
13th Jul 20261911 AMAQI
13th Jul 20262112 PMAQI
13th Jul 2026171 PMAQI
13th Jul 2026242 PMAQI
13th Jul 2026363 PMAQI
13th Jul 2026344 PMAQI
13th Jul 2026365 PMAQI
13th Jul 2026386 PMAQI
13th Jul 2026317 PMAQI
13th Jul 2026338 PMAQI
13th Jul 2026389 PMAQI
13th Jul 20263010 PMAQI
13th Jul 20263011 PMAQI
14th Jul 20263012 AMAQI
14th Jul 2026281 AMAQI
14th Jul 2026242 AMAQI
14th Jul 2026183 AMAQI
14th Jul 2026314 AMAQI
18°C12/26°C
14th Jul 2026295 AMAQI
14th Jul 2026256 AMAQI
14th Jul 2026257 AMAQI
14th Jul 2026228 AMAQI
14th Jul 2026269 AMAQI
14th Jul 20263010 AMAQI
14th Jul 20262611 AMAQI
14th Jul 20262412 PMAQI
14th Jul 2026151 PMAQI
14th Jul 2026292 PMAQI
14th Jul 2026163 PMAQI
14th Jul 2026224 PMAQI
14th Jul 2026215 PMAQI
14th Jul 2026356 PMAQI
14th Jul 2026227 PMAQI
14th Jul 2026318 PMAQI
14th Jul 2026209 PMAQI
14th Jul 20262110 PMAQI
14th Jul 20262011 PMAQI
15th Jul 20261912 AMAQI
15th Jul 2026201 AMAQI
15th Jul 2026182 AMAQI
15th Jul 2026243 AMAQI
15th Jul 2026334 AMAQI
18°C13/25°C
15th Jul 2026315 AMAQI
15th Jul 2026336 AMAQI
15th Jul 2026267 AMAQI
15th Jul 2026218 AMAQI
15th Jul 2026189 AMAQI
15th Jul 20261410 AMAQI
15th Jul 20262011 AMAQI
15th Jul 20262012 PMAQI
15th Jul 2026251 PMAQI
15th Jul 2026222 PMAQI
15th Jul 2026183 PMAQI
15th Jul 2026244 PMAQI
15th Jul 2026205 PMAQI
15th Jul 2026326 PMAQI
15th Jul 2026197 PMAQI
15th Jul 2026118 PMAQI
15th Jul 2026179 PMAQI
15th Jul 20261210 PMAQI
15th Jul 20261411 PMAQI
16th Jul 20261712 AMAQI
16th Jul 2026231 AMAQI
16th Jul 2026282 AMAQI
16th Jul 2026123 AMAQI
16th Jul 2026254 AMAQI
14°C11/20°C
16th Jul 2026235 AMAQI
16th Jul 2026216 AMAQI
16th Jul 2026167 AMAQI
16th Jul 2026128 AMAQI
16th Jul 2026129 AMAQI
16th Jul 2026910 AMAQI
16th Jul 2026611 AMAQI
16th Jul 2026712 PMAQI
16th Jul 2026121 PMAQI
16th Jul 2026122 PMAQI
16th Jul 2026103 PMAQI
16th Jul 2026174 PMAQI
16th Jul 2026105 PMAQI
16th Jul 2026106 PMAQI
16th Jul 2026107 PMAQI
16th Jul 2026108 PMAQI
16th Jul 2026149 PMAQI
16th Jul 20261810 PMAQI
16th Jul 20261711 PMAQI
17th Jul 20261612 AMAQI
17th Jul 2026191 AMAQI
17th Jul 2026252 AMAQI
17th Jul 2026203 AMAQI
17th Jul 2026124 AMAQI
17°C10/25°C
17th Jul 2026175 AMAQI
17th Jul 2026126 AMAQI
17th Jul 2026107 AMAQI
17th Jul 202698 AMAQI
17th Jul 2026239 AMAQI
17th Jul 20262110 AMAQI
17th Jul 20263611 AMAQI
17th Jul 20262512 PMAQI
17th Jul 2026211 PMAQI
17th Jul 2026292 PMAQI
17th Jul 2026363 PMAQI
17th Jul 2026314 PMAQI
17th Jul 2026405 PMAQI
17th Jul 2026446 PMAQI
17th Jul 2026427 PMAQI
17th Jul 2026428 PMAQI
17th Jul 2026389 PMAQI
17th Jul 20263610 PMAQI
17th Jul 20263811 PMAQI
18th Jul 20263812 AMAQI
18th Jul 2026441 AMAQI
18th Jul 2026422 AMAQI
18th Jul 2026363 AMAQI
18th Jul 2026274 AMAQI
16°C11/22°C
18th Jul 2026255 AMAQI
18th Jul 2026236 AMAQI
18th Jul 2026307 AMAQI
18th Jul 2026408 AMAQI
18th Jul 2026389 AMAQI
18th Jul 20262710 AMAQI
18th Jul 20262711 AMAQI
18th Jul 20262912 PMAQI
18th Jul 2026461 PMAQI
18th Jul 2026462 PMAQI
18th Jul 2026443 PMAQI
18th Jul 2026464 PMAQI
18th Jul 2026445 PMAQI
18th Jul 2026406 PMAQI
18th Jul 2026407 PMAQI
18th Jul 2026298 PMAQI
18th Jul 2026409 PMAQI
18th Jul 20262510 PMAQI
18th Jul 20263611 PMAQI
19th Jul 20262512 AMAQI
19th Jul 2026301 AMAQI
19th Jul 2026252 AMAQI
19th Jul 2026253 AMAQI
19th Jul 2026254 AMAQI
14°C10/20°C
19th Jul 2026235 AMAQI
19th Jul 2026216 AMAQI
19th Jul 2026237 AMAQI
19th Jul 2026238 AMAQI
19th Jul 2026279 AMAQI
19th Jul 20262510 AMAQI
19th Jul 20262511 AMAQI
19th Jul 20262512 PMAQI
19th Jul 2026251 PMAQI
19th Jul 2026342 PMAQI
19th Jul 2026213 PMAQI
19th Jul 2026254 PMAQI
19th Jul 2026255 PMAQI
19th Jul 2026256 PMAQI
19th Jul 2026387 PMAQI
19th Jul 2026388 PMAQI
19th Jul 2026429 PMAQI
19th Jul 20264410 PMAQI
19th Jul 20264211 PMAQI
20th Jul 20264412 AMAQI
20th Jul 2026441 AMAQI
20th Jul 2026422 AMAQI
20th Jul 2026403 AMAQI
20th Jul 2026324 AMAQI
12°C8/17°C
20th Jul 2026235 AMAQI
20th Jul 2026276 AMAQI
20th Jul 2026257 AMAQI
20th Jul 2026258 AMAQI
20th Jul 2026279 AMAQI
20th Jul 20262710 AMAQI
20th Jul 20262711 AMAQI
20th Jul 20263612 PMAQI
20th Jul 2026251 PMAQI
20th Jul 2026242 PMAQI
20th Jul 2026233 PMAQI
20th Jul 2026254 PMAQI
20th Jul 2026255 PMAQI
20th Jul 2026236 PMAQI
20th Jul 2026277 PMAQI
20th Jul 2026448 PMAQI
20th Jul 2026449 PMAQI
20th Jul 20263410 PMAQI
20th Jul 20262311 PMAQI
21st Jul 20262512 AMAQI
21st Jul 2026271 AMAQI
21st Jul 2026272 AMAQI
21st Jul 2026333 AMAQI
21st Jul 2026384 AMAQI
13°C7/20°C
21st Jul 2026276 AMAQI
21st Jul 2026347 AMAQI
21st Jul 2026388 AMAQI
21st Jul 2026369 AMAQI
21st Jul 20263610 AMAQI
21st Jul 20263611 AMAQI
21st Jul 20263812 PMAQI
21st Jul 2026311 PMAQI
21st Jul 2026342 PMAQI
21st Jul 2026253 PMAQI
21st Jul 2026214 PMAQI
21st Jul 2026255 PMAQI
21st Jul 2026236 PMAQI
21st Jul 2026257 PMAQI
21st Jul 2026298 PMAQI
21st Jul 2026259 PMAQI
21st Jul 20262310 PMAQI
21st Jul 20262311 PMAQI
22nd Jul 20263312 AMAQI
22nd Jul 2026331 AMAQI
22nd Jul 2026382 AMAQI
22nd Jul 2026383 AMAQI
22nd Jul 2026294 AMAQI
12°C7/17°C
22nd Jul 2026275 AMAQI
22nd Jul 2026336 AMAQI
22nd Jul 2026407 AMAQI
22nd Jul 2026388 AMAQI
22nd Jul 2026569 AMAQI
22nd Jul 20262910 AMAQI
22nd Jul 20263411 AMAQI
22nd Jul 20262912 PMAQI
22nd Jul 2026251 PMAQI
22nd Jul 2026402 PMAQI
22nd Jul 2026403 PMAQI
22nd Jul 2026424 PMAQI
22nd Jul 2026365 PMAQI
22nd Jul 2026346 PMAQI
22nd Jul 2026367 PMAQI
22nd Jul 2026258 PMAQI
22nd Jul 2026239 PMAQI
22nd Jul 20262310 PMAQI
22nd Jul 20262311 PMAQI
23rd Jul 20262512 AMAQI
23rd Jul 2026291 AMAQI
23rd Jul 2026382 AMAQI
23rd Jul 2026383 AMAQI
23rd Jul 2026334 AMAQI
12°C5/19°C
23rd Jul 2026275 AMAQI
23rd Jul 2026336 AMAQI
23rd Jul 2026387 AMAQI
23rd Jul 2026488 AMAQI
23rd Jul 2026449 AMAQI
23rd Jul 20264210 AMAQI
23rd Jul 20262511 AMAQI
23rd Jul 20262512 PMAQI
23rd Jul 2026271 PMAQI
23rd Jul 2026272 PMAQI
23rd Jul 2026253 PMAQI
23rd Jul 2026254 PMAQI
23rd Jul 2026255 PMAQI
23rd Jul 2026296 PMAQI
23rd Jul 2026317 PMAQI
23rd Jul 2026318 PMAQI
23rd Jul 2026259 PMAQI
23rd Jul 20262510 PMAQI
23rd Jul 20262911 PMAQI
24th Jul 20263112 AMAQI
24th Jul 2026331 AMAQI
24th Jul 2026272 AMAQI
24th Jul 2026253 AMAQI
24th Jul 2026254 AMAQI
12°C6/18°C
24th Jul 2026215 AMAQI
24th Jul 2026216 AMAQI
24th Jul 2026237 AMAQI
24th Jul 2026258 AMAQI
24th Jul 2026309 AMAQI
24th Jul 20262110 AMAQI
24th Jul 20262111 AMAQI
24th Jul 20262312 PMAQI
24th Jul 2026251 PMAQI
24th Jul 2026252 PMAQI
24th Jul 2026253 PMAQI
24th Jul 2026384 PMAQI
24th Jul 2026255 PMAQI
24th Jul 2026236 PMAQI
24th Jul 2026257 PMAQI
24th Jul 2026258 PMAQI
24th Jul 2026279 PMAQI
24th Jul 20262710 PMAQI
24th Jul 20262511 PMAQI
25th Jul 20262912 AMAQI
25th Jul 2026291 AMAQI
25th Jul 2026292 AMAQI
25th Jul 2026333 AMAQI
25th Jul 2026314 AMAQI
13°C5/21°C
25th Jul 2026335 AMAQI
25th Jul 2026336 AMAQI
25th Jul 2026337 AMAQI
25th Jul 2026338 AMAQI
25th Jul 2026389 AMAQI
25th Jul 20264210 AMAQI
25th Jul 20263411 AMAQI
25th Jul 20262312 PMAQI
25th Jul 2026271 PMAQI
25th Jul 2026462 PMAQI
25th Jul 2026503 PMAQI
25th Jul 2026514 PMAQI
25th Jul 2026525 PMAQI
25th Jul 2026546 PMAQI
25th Jul 2026537 PMAQI
25th Jul 2026548 PMAQI
25th Jul 2026559 PMAQI
25th Jul 20265710 PMAQI
25th Jul 20265211 PMAQI
26th Jul 20265312 AMAQI
26th Jul 2026521 AMAQI
26th Jul 2026512 AMAQI
26th Jul 2026543 AMAQI
26th Jul 2026404 AMAQI
16°C9/24°C
26th Jul 2026215 AMAQI
26th Jul 2026216 AMAQI
26th Jul 2026277 AMAQI
26th Jul 2026298 AMAQI
26th Jul 2026259 AMAQI
26th Jul 20262310 AMAQI
26th Jul 20262511 AMAQI
26th Jul 20262512 PMAQI
26th Jul 2026341 PMAQI
26th Jul 2026272 PMAQI
26th Jul 2026343 PMAQI
26th Jul 2026344 PMAQI
26th Jul 2026295 PMAQI
26th Jul 2026336 PMAQI
26th Jul 2026337 PMAQI
26th Jul 2026388 PMAQI
26th Jul 2026259 PMAQI
26th Jul 20263210 PMAQI
26th Jul 20263611 PMAQI
27th Jul 20264412 AMAQI
27th Jul 2026521 AMAQI
27th Jul 2026542 AMAQI
27th Jul 2026553 AMAQI
27th Jul 2026344 AMAQI
13°C11/15°C
27th Jul 2026315 AMAQI
27th Jul 2026276 AMAQI
27th Jul 2026347 AMAQI
27th Jul 2026368 AMAQI
27th Jul 2026369 AMAQI
27th Jul 20264210 AMAQI
27th Jul 20264411 AMAQI
27th Jul 20263612 PMAQI
27th Jul 2026211 PMAQI
27th Jul 2026232 PMAQI
27th Jul 2026233 PMAQI
27th Jul 2026234 PMAQI
27th Jul 2026235 PMAQI
27th Jul 2026236 PMAQI
27th Jul 2026297 PMAQI
27th Jul 2026318 PMAQI
27th Jul 2026339 PMAQI
27th Jul 20263110 PMAQI
27th Jul 20262711 PMAQI
28th Jul 20262712 AMAQI
28th Jul 2026401 AMAQI
28th Jul 2026362 AMAQI
28th Jul 2026383 AMAQI
28th Jul 2026324 AMAQI
14°C8/20°C
28th Jul 2026215 AMAQI
28th Jul 2026216 AMAQI
28th Jul 2026277 AMAQI
28th Jul 2026238 AMAQI
28th Jul 2026319 AMAQI
28th Jul 20262710 AMAQI
28th Jul 20262511 AMAQI
28th Jul 20262512 PMAQI
28th Jul 2026291 PMAQI
28th Jul 2026442 PMAQI
28th Jul 2026443 PMAQI
28th Jul 2026424 PMAQI
28th Jul 2026305 PMAQI
28th Jul 2026306 PMAQI
28th Jul 2026387 PMAQI
28th Jul 2026488 PMAQI
28th Jul 2026469 PMAQI
28th Jul 20264210 PMAQI
28th Jul 20264411 PMAQI
29th Jul 20264212 AMAQI
29th Jul 2026481 AMAQI
29th Jul 2026482 AMAQI
29th Jul 2026383 AMAQI
29th Jul 2026384 AMAQI
17°C9/25°C
29th Jul 2026255 AMAQI
29th Jul 2026336 AMAQI
29th Jul 2026327 AMAQI
29th Jul 2026238 AMAQI
29th Jul 2026509 AMAQI
29th Jul 20264210 AMAQI
29th Jul 20264611 AMAQI
29th Jul 20264812 PMAQI
29th Jul 2026501 PMAQI
29th Jul 2026552 PMAQI
29th Jul 2026533 PMAQI
29th Jul 2026554 PMAQI
29th Jul 2026575 PMAQI
29th Jul 2026576 PMAQI
29th Jul 2026577 PMAQI
29th Jul 2026548 PMAQI
29th Jul 2026539 PMAQI
29th Jul 20265410 PMAQI
29th Jul 20265311 PMAQI
30th Jul 20265612 AMAQI
30th Jul 2026561 AMAQI
30th Jul 2026542 AMAQI
30th Jul 2026563 AMAQI
30th Jul 2026534 AMAQI
19°C13/25°C
30th Jul 2026335 AMAQI
30th Jul 2026336 AMAQI
30th Jul 2026407 AMAQI
30th Jul 2026548 AMAQI
30th Jul 2026549 AMAQI
30th Jul 20265510 AMAQI
30th Jul 20265811 AMAQI
30th Jul 20265512 PMAQI
30th Jul 2026581 PMAQI
30th Jul 2026602 PMAQI
30th Jul 2026603 PMAQI
30th Jul 2026604 PMAQI
30th Jul 2026575 PMAQI
30th Jul 2026576 PMAQI
30th Jul 2026597 PMAQI
30th Jul 2026668 PMAQI
30th Jul 2026719 PMAQI
30th Jul 20267810 PMAQI
30th Jul 20267411 PMAQI
31st Jul 20266912 AMAQI
31st Jul 2026711 AMAQI
31st Jul 2026682 AMAQI
31st Jul 2026703 AMAQI
31st Jul 2026624 AMAQI
20°C13/28°C
31st Jul 2026515 AMAQI
31st Jul 2026516 AMAQI
31st Jul 2026567 AMAQI
31st Jul 2026698 AMAQI
31st Jul 2026699 AMAQI
31st Jul 20266910 AMAQI
31st Jul 20267111 AMAQI
31st Jul 20267112 PMAQI
31st Jul 2026761 PMAQI
31st Jul 2026762 PMAQI
31st Jul 2026803 PMAQI
31st Jul 2026764 PMAQI
31st Jul 2026725 PMAQI
31st Jul 2026736 PMAQI
31st Jul 2026587 PMAQI
31st Jul 2026488 PMAQI
31st Jul 2026389 PMAQI
31st Jul 20263310 PMAQI
31st Jul 20262711 PMAQI
1st Aug 20262312 AMAQI
1st Aug 2026231 AMAQI
1st Aug 2026292 AMAQI
1st Aug 2026313 AMAQI
1st Aug 2026344 AMAQI
18°C13/28°C
1st Aug 2026445 AMAQI
1st Aug 2026466 AMAQI
1st Aug 2026407 AMAQI
1st Aug 2026528 AMAQI
1st Aug 2026509 AMAQI
1st Aug 20265210 AMAQI
1st Aug 20265111 AMAQI
1st Aug 20265012 PMAQI
1st Aug 2026481 PMAQI
1st Aug 2026482 PMAQI
1st Aug 2026543 PMAQI
1st Aug 2026554 PMAQI
1st Aug 2026445 PMAQI
1st Aug 2026526 PMAQI
1st Aug 2026507 PMAQI
1st Aug 2026448 PMAQI
1st Aug 2026339 PMAQI
1st Aug 20263610 PMAQI
1st Aug 20264011 PMAQI
2nd Aug 20264412 AMAQI
2nd Aug 2026421 AMAQI
2nd Aug 2026442 AMAQI
2nd Aug 2026443 AMAQI
2nd Aug 2026384 AMAQI
16°C12/24°C
2nd Aug 2026335 AMAQI
2nd Aug 2026316 AMAQI
2nd Aug 2026407 AMAQI
2nd Aug 2026448 AMAQI
2nd Aug 2026469 AMAQI
2nd Aug 20263810 AMAQI
2nd Aug 20264011 AMAQI
2nd Aug 20263812 PMAQI
2nd Aug 2026461 PMAQI
2nd Aug 2026442 PMAQI
2nd Aug 2026423 PMAQI
2nd Aug 2026424 PMAQI
2nd Aug 2026445 PMAQI
2nd Aug 2026446 PMAQI
2nd Aug 2026467 PMAQI
2nd Aug 2026448 PMAQI
2nd Aug 2026429 PMAQI
2nd Aug 20264210 PMAQI
2nd Aug 20264011 PMAQI
3rd Aug 20264412 AMAQI
3rd Aug 2026481 AMAQI
3rd Aug 2026502 AMAQI
3rd Aug 2026463 AMAQI
3rd Aug 2026404 AMAQI
18°C12/24°C
3rd Aug 2026275 AMAQI
3rd Aug 2026316 AMAQI
3rd Aug 2026387 AMAQI
3rd Aug 2026518 AMAQI
3rd Aug 2026519 AMAQI
3rd Aug 20265110 AMAQI
3rd Aug 20265211 AMAQI
3rd Aug 20265312 PMAQI
3rd Aug 2026561 PMAQI
3rd Aug 2026622 PMAQI
3rd Aug 2026633 PMAQI
3rd Aug 2026604 PMAQI
3rd Aug 2026585 PMAQI
3rd Aug 2026606 PMAQI
3rd Aug 2026587 PMAQI
3rd Aug 2026538 PMAQI
3rd Aug 2026469 PMAQI
3rd Aug 20264410 PMAQI
3rd Aug 20264211 PMAQI
4th Aug 20264712 AMAQI
4th Aug 2026481 AMAQI
4th Aug 2026502 AMAQI
4th Aug 2026463 AMAQI
4th Aug 2026424 AMAQI
19°C13/25°C
4th Aug 2026385 AMAQI
5 AM4th Aug 2026386 AMAQI
4th Aug 2026427 AMAQI
4th Aug 2026488 AMAQI
4th Aug 2026509 AMAQI
4th Aug 20265110 AMAQI
4th Aug 20265411 AMAQI
4th Aug 20265612 PMAQI
4th Aug 2026531 PMAQI
1 PM4th Aug 2026562 PMAQI
4th Aug 2026563 PMAQI
4th Aug 2026524 PMAQI
4th Aug 2026535 PMAQI
4th Aug 2026496 PMAQI
4th Aug 2026547 PMAQI
4th Aug 2026578 PMAQI
4th Aug 2026559 PMAQI
9 PM4th Aug 20265410 PMAQI
4th Aug 20265211 PMAQI
1 AM
4 AM
20°C15/27°C
Day time
Avg. Highest Time
8 PM
36AQI
1 hours / Day
30 hours / Month
Avg. Lowest Time
5 AM
25AQI
1 hours / Day
30 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 8 PM to 8 PM (Avg. 36), while the lowest AQI was between 5 AM to 5 AM (Avg. 25).
Night time
Avg. Highest Time
1 AM - 2 AM
35AQI
2 hours / Day
60 hours / Month
Avg. Lowest Time
4 AM
30AQI
1 hours / Day
30 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 1 AM to 2 AM (Avg. 35), while the lowest AQI was between 4 AM to 4 AM (Avg. 30).
2026 Days Vs Air Quality
Chi, Chur, Graubunden, Switzerland
2026
80%
170
20%
42
0.4%
1
Total number of days with different AQI categories in last 216 days in 2026 (149 days remaining)
Good
170 DaysModerate
42 DaysPoor
1 DaysUnhealthy
0 DaysSevere
0 DaysHazardous
0 DaysUnder WHO’s Safe Air Quality Limits: 80%
Health Risk Level:
Low
In 2026, 80% of 216 days were within WHO’s safe air quality limits. The risk of health issues is Low, but the long-term effects, especially on vulnerable individuals, remain uncertain.
Annual Air Quality Insights
Chi, Chur, Graubunden, Switzerland
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
101AQI (US)
101AQI (US)
2nd January 2026
62AQI (US)
62AQI (US)
3rd January 2026
29AQI (US)
29AQI (US)
4th January 2026
37AQI (US)
37AQI (US)
5th January 2026
63AQI (US)
63AQI (US)
6th January 2026
60AQI (US)
60AQI (US)
7th January 2026
67AQI (US)
67AQI (US)
8th January 2026
28AQI (US)
28AQI (US)
9th January 2026
19AQI (US)
19AQI (US)
10th January 2026
16AQI (US)
16AQI (US)
11th January 2026
44AQI (US)
44AQI (US)
12th January 2026
29AQI (US)
29AQI (US)
13th January 2026
41AQI (US)
41AQI (US)
14th January 2026
48AQI (US)
48AQI (US)
15th January 2026
53AQI (US)
53AQI (US)
16th January 2026
57AQI (US)
57AQI (US)
17th January 2026
72AQI (US)
72AQI (US)
18th January 2026
62AQI (US)
62AQI (US)
19th January 2026
61AQI (US)
61AQI (US)
20th January 2026
55AQI (US)
55AQI (US)
21st January 2026
54AQI (US)
54AQI (US)
22nd January 2026
63AQI (US)
63AQI (US)
23rd January 2026
70AQI (US)
70AQI (US)
24th January 2026
72AQI (US)
72AQI (US)
25th January 2026
57AQI (US)
57AQI (US)
26th January 2026
28AQI (US)
28AQI (US)
27th January 2026
25AQI (US)
25AQI (US)
28th January 2026
55AQI (US)
55AQI (US)
29th January 2026
36AQI (US)
36AQI (US)
30th January 2026
36AQI (US)
36AQI (US)
31st January 2026
45AQI (US)
45AQI (US)
1st February 2026
43AQI (US)
43AQI (US)
2nd February 2026
74AQI (US)
74AQI (US)
3rd February 2026
52AQI (US)
52AQI (US)
4th February 2026
39AQI (US)
39AQI (US)
5th February 2026
65AQI (US)
65AQI (US)
6th February 2026
62AQI (US)
62AQI (US)
7th February 2026
22AQI (US)
22AQI (US)
8th February 2026
31AQI (US)
31AQI (US)
9th February 2026
54AQI (US)
54AQI (US)
10th February 2026
61AQI (US)
61AQI (US)
11th February 2026
20AQI (US)
20AQI (US)
12th February 2026
13AQI (US)
13AQI (US)
13th February 2026
20AQI (US)
20AQI (US)
14th February 2026
30AQI (US)
30AQI (US)
15th February 2026
18AQI (US)
18AQI (US)
16th February 2026
29AQI (US)
29AQI (US)
17th February 2026
38AQI (US)
38AQI (US)
18th February 2026
36AQI (US)
36AQI (US)
19th February 2026
35AQI (US)
35AQI (US)
20th February 2026
29AQI (US)
29AQI (US)
21st February 2026
22AQI (US)
22AQI (US)
22nd February 2026
34AQI (US)
34AQI (US)
23rd February 2026
35AQI (US)
35AQI (US)
24th February 2026
26AQI (US)
26AQI (US)
25th February 2026
79AQI (US)
79AQI (US)
26th February 2026
66AQI (US)
66AQI (US)
27th February 2026
61AQI (US)
61AQI (US)
28th February 2026
66AQI (US)
66AQI (US)
1st March 2026
63AQI (US)
63AQI (US)
2nd March 2026
72AQI (US)
72AQI (US)
3rd March 2026
44AQI (US)
44AQI (US)
4th March 2026
62AQI (US)
62AQI (US)
5th March 2026
74AQI (US)
74AQI (US)
6th March 2026
81AQI (US)
81AQI (US)
7th March 2026
75AQI (US)
75AQI (US)
8th March 2026
79AQI (US)
79AQI (US)
9th March 2026
71AQI (US)
71AQI (US)
10th March 2026
57AQI (US)
57AQI (US)
11th March 2026
33AQI (US)
33AQI (US)
12th March 2026
27AQI (US)
27AQI (US)
13th March 2026
58AQI (US)
58AQI (US)
14th March 2026
37AQI (US)
37AQI (US)
15th March 2026
12AQI (US)
12AQI (US)
16th March 2026
21AQI (US)
21AQI (US)
17th March 2026
21AQI (US)
21AQI (US)
18th March 2026
26AQI (US)
26AQI (US)
19th March 2026
60AQI (US)
60AQI (US)
20th March 2026
55AQI (US)
55AQI (US)
21st March 2026
52AQI (US)
52AQI (US)
22nd March 2026
40AQI (US)
40AQI (US)
23rd March 2026
47AQI (US)
47AQI (US)
24th March 2026
46AQI (US)
46AQI (US)
25th March 2026
37AQI (US)
37AQI (US)
26th March 2026
10AQI (US)
10AQI (US)
27th March 2026
13AQI (US)
13AQI (US)
28th March 2026
29AQI (US)
29AQI (US)
29th March 2026
27AQI (US)
27AQI (US)
30th March 2026
22AQI (US)
22AQI (US)
31st March 2026
26AQI (US)
26AQI (US)
1st April 2026
30AQI (US)
30AQI (US)
2nd April 2026
34AQI (US)
34AQI (US)
3rd April 2026
27AQI (US)
27AQI (US)
4th April 2026
23AQI (US)
23AQI (US)
5th April 2026
34AQI (US)
34AQI (US)
6th April 2026
27AQI (US)
27AQI (US)
7th April 2026
25AQI (US)
25AQI (US)
8th April 2026
26AQI (US)
26AQI (US)
9th April 2026
22AQI (US)
22AQI (US)
10th April 2026
35AQI (US)
35AQI (US)
11th April 2026
40AQI (US)
40AQI (US)
12th April 2026
20AQI (US)
20AQI (US)
13th April 2026
13AQI (US)
13AQI (US)
14th April 2026
24AQI (US)
24AQI (US)
15th April 2026
34AQI (US)
34AQI (US)
16th April 2026
29AQI (US)
29AQI (US)
17th April 2026
18th April 2026
47AQI (US)
47AQI (US)
19th April 2026
30AQI (US)
30AQI (US)
20th April 2026
20AQI (US)
20AQI (US)
21st April 2026
18AQI (US)
18AQI (US)
22nd April 2026
23rd April 2026
21AQI (US)
21AQI (US)
24th April 2026
18AQI (US)
18AQI (US)
25th April 2026
20AQI (US)
20AQI (US)
26th April 2026
21AQI (US)
21AQI (US)
27th April 2026
25AQI (US)
25AQI (US)
28th April 2026
22AQI (US)
22AQI (US)
29th April 2026
19AQI (US)
19AQI (US)
30th April 2026
21AQI (US)
21AQI (US)
1st May 2026
24AQI (US)
24AQI (US)
2nd May 2026
22AQI (US)
22AQI (US)
3rd May 2026
20AQI (US)
20AQI (US)
4th May 2026
26AQI (US)
26AQI (US)
5th May 2026
27AQI (US)
27AQI (US)
6th May 2026
18AQI (US)
18AQI (US)
7th May 2026
12AQI (US)
12AQI (US)
8th May 2026
26AQI (US)
26AQI (US)
9th May 2026
10th May 2026
29AQI (US)
29AQI (US)
11th May 2026
24AQI (US)
24AQI (US)
12th May 2026
15AQI (US)
15AQI (US)
13th May 2026
20AQI (US)
20AQI (US)
14th May 2026
23AQI (US)
23AQI (US)
15th May 2026
26AQI (US)
26AQI (US)
16th May 2026
36AQI (US)
36AQI (US)
17th May 2026
39AQI (US)
39AQI (US)
18th May 2026
31AQI (US)
31AQI (US)
19th May 2026
34AQI (US)
34AQI (US)
20th May 2026
34AQI (US)
34AQI (US)
21st May 2026
33AQI (US)
33AQI (US)
22nd May 2026
36AQI (US)
36AQI (US)
23rd May 2026
38AQI (US)
38AQI (US)
24th May 2026
50AQI (US)
50AQI (US)
25th May 2026
45AQI (US)
45AQI (US)
26th May 2026
56AQI (US)
56AQI (US)
27th May 2026
42AQI (US)
42AQI (US)
28th May 2026
27AQI (US)
27AQI (US)
29th May 2026
23AQI (US)
23AQI (US)
30th May 2026
20AQI (US)
20AQI (US)
31st May 2026
41AQI (US)
41AQI (US)
1st June 2026
14AQI (US)
14AQI (US)
2nd June 2026
22AQI (US)
22AQI (US)
3rd June 2026
16AQI (US)
16AQI (US)
4th June 2026
13AQI (US)
13AQI (US)
5th June 2026
14AQI (US)
14AQI (US)
6th June 2026
17AQI (US)
17AQI (US)
7th June 2026
19AQI (US)
19AQI (US)
8th June 2026
20AQI (US)
20AQI (US)
9th June 2026
16AQI (US)
16AQI (US)
10th June 2026
13AQI (US)
13AQI (US)
11th June 2026
12AQI (US)
12AQI (US)
12th June 2026
17AQI (US)
17AQI (US)
13th June 2026
19AQI (US)
19AQI (US)
14th June 2026
17AQI (US)
17AQI (US)
15th June 2026
19AQI (US)
19AQI (US)
16th June 2026
27AQI (US)
27AQI (US)
17th June 2026
38AQI (US)
38AQI (US)
18th June 2026
32AQI (US)
32AQI (US)
19th June 2026
26AQI (US)
26AQI (US)
20th June 2026
15AQI (US)
15AQI (US)
21st June 2026
20AQI (US)
20AQI (US)
22nd June 2026
20AQI (US)
20AQI (US)
23rd June 2026
22AQI (US)
22AQI (US)
24th June 2026
25AQI (US)
25AQI (US)
25th June 2026
27AQI (US)
27AQI (US)
26th June 2026
31AQI (US)
31AQI (US)
27th June 2026
32AQI (US)
32AQI (US)
28th June 2026
25AQI (US)
25AQI (US)
29th June 2026
15AQI (US)
15AQI (US)
30th June 2026
13AQI (US)
13AQI (US)
1st July 2026
17AQI (US)
17AQI (US)
2nd July 2026
10AQI (US)
10AQI (US)
3rd July 2026
20AQI (US)
20AQI (US)
4th July 2026
18AQI (US)
18AQI (US)
5th July 2026
17AQI (US)
17AQI (US)
6th July 2026
18AQI (US)
18AQI (US)
7th July 2026
17AQI (US)
17AQI (US)
8th July 2026
23AQI (US)
23AQI (US)
9th July 2026
20AQI (US)
20AQI (US)
10th July 2026
17AQI (US)
17AQI (US)
11th July 2026
25AQI (US)
25AQI (US)
12th July 2026
24AQI (US)
24AQI (US)
13th July 2026
26AQI (US)
26AQI (US)
14th July 2026
25AQI (US)
25AQI (US)
15th July 2026
21AQI (US)
21AQI (US)
16th July 2026
15AQI (US)
15AQI (US)
17th July 2026
27AQI (US)
27AQI (US)
18th July 2026
36AQI (US)
36AQI (US)
19th July 2026
28AQI (US)
28AQI (US)
20th July 2026
31AQI (US)
31AQI (US)
21st July 2026
30AQI (US)
30AQI (US)
22nd July 2026
34AQI (US)
34AQI (US)
23rd July 2026
31AQI (US)
31AQI (US)
24th July 2026
26AQI (US)
26AQI (US)
25th July 2026
40AQI (US)
40AQI (US)
26th July 2026
33AQI (US)
33AQI (US)
27th July 2026
34AQI (US)
34AQI (US)
28th July 2026
34AQI (US)
34AQI (US)
29th July 2026
46AQI (US)
46AQI (US)
30th July 2026
57AQI (US)
57AQI (US)
31st July 2026
63AQI (US)
63AQI (US)
1st August 2026
43AQI (US)
43AQI (US)
2nd August 2026
42AQI (US)
42AQI (US)
3rd August 2026
49AQI (US)
49AQI (US)
4th August 2026
50AQI (US)
50AQI (US)
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
50AQI (US)
41AQI (US)
44AQI (US)
26AQI (US)
30AQI (US)
21AQI (US)
28AQI (US)
46AQI (US)
No. of days
Jan.Feb.Mar.Apr.MayJun.Jul.Aug.Sep.Oct.Nov.Dec.Total Days
202635AQI (US)
14
16
1
18
10
18
13
28
29
1
30
29
2
4
170
42
1
Highest AQI (US) recorded in
January50AQI (US)
Lowest AQI (US) recorded in
June21AQI (US)
202542AQI (US)
13
18
5
23
26
5
30
31
22
8
31
23
8
28
2
12
19
8
22
4
27
233
130
2
Highest AQI (US) recorded in
December60AQI (US)
Lowest AQI (US) recorded in
April25AQI (US)
202426AQI (US)
31
29
29
2
30
30
1
29
1
31
31
30
31
30
21
10
352
14
Highest AQI (US) recorded in
December45AQI (US)
Lowest AQI (US) recorded in
October18AQI (US)
202323AQI (US)
30
28
31
30
31
30
31
31
30
29
29
31
361
Highest AQI (US) recorded in
June36AQI (US)
Lowest AQI (US) recorded in
November16AQI (US)
202224AQI (US)
30
21
28
3
30
31
30
23
2
29
31
30
31
316
3
Highest AQI (US) recorded in
March36AQI (US)
Lowest AQI (US) recorded in
November17AQI (US)
202123AQI (US)
29
25
2
1
31
30
31
29
1
31
31
30
31
30
31
359
3
1
Highest AQI (US) recorded in
February30AQI (US)
Lowest AQI (US) recorded in
November16AQI (US)
202022AQI (US)
13
21
18
30
31
31
30
30
28
31
263
Highest AQI (US) recorded in
April31AQI (US)
Lowest AQI (US) recorded in
October14AQI (US)
Most & Least Polluted Years Over the Last 7 Years
Most Polluted Year Recorded
2025(Avg.)
42AQI (US)Least Polluted Year Recorded
2020(Avg.)
22AQI (US)Chi's annual 2026 AQI (US) (35) shows an average percentage change of 37.8% (worsened AQI (US)) compared to previous years: 2020 (22), 2021 (23), 2022 (24), 2023 (23), 2024 (26), 2025 (42).
