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
Chur, Graubunden, Switzerland
2021
2022
2023
2024
2025
AQI
.
Days
AQI Trends: Highest and Lowest
Highest AQI recorded on
14th Aug 2024
39AQILowest AQI recorded on
30th Aug 2021
14AQISame Day Analysis (1st August ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 4th highest AQI at 22 of Good air quality, showing improvement over 2024, 2022 and 2021 on the same day.
Download 2024 Annual Data
World Air Quality Report
Day & Night AQI Trend: 1st Aug - 2nd Aug 2025
Chur, Graubunden, Switzerland
AQI
Day
Night
.
5 AM1st Aug 2025
9 PM
4 AM2nd Aug 2025
Day time
Avg. Highest Time
2PM1st Aug
24AQI
Avg. Lowest Time
5PM1st Aug
22AQI
Night time
Avg. Highest Time
2AM2nd Aug
25AQI
Avg. Lowest Time
10PM1st Aug
22AQI
In the last 24 hours,
Chur's AQI reached its highest point of 25 at 2 AM during the Night, while the lowest point, 22, was recorded at 10 PM during the Night between 1st Aug and 2nd Aug 2025.
Day & Night AQI Trend : Jul - Aug 2025
Chur, Graubunden, Switzerland
JulAug
03rd - 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 - 30th30th - 31st31st - 01st01st - 02nd02nd
Day
Night
3rd Jul 2025355 AMAQI
3rd Jul 2025356 AMAQI
3rd Jul 2025357 AMAQI
3rd Jul 2025358 AMAQI
3rd Jul 2025359 AMAQI
3rd Jul 20253510 AMAQI
3rd Jul 20253711 AMAQI
3rd Jul 20253612 PMAQI
3rd Jul 2025361 PMAQI
3rd Jul 2025342 PMAQI
3rd Jul 2025333 PMAQI
3rd Jul 2025344 PMAQI
3rd Jul 2025345 PMAQI
3rd Jul 2025346 PMAQI
3rd Jul 2025347 PMAQI
3rd Jul 2025358 PMAQI
3rd Jul 2025349 PMAQI
3rd Jul 20253310 PMAQI
3rd Jul 20253411 PMAQI
4th Jul 20253312 AMAQI
4th Jul 2025341 AMAQI
4th Jul 2025392 AMAQI
4th Jul 2025413 AMAQI
4th Jul 2025444 AMAQI
17°C12/23°C
4th Jul 2025405 AMAQI
4th Jul 2025366 AMAQI
4th Jul 2025397 AMAQI
4th Jul 2025398 AMAQI
4th Jul 2025409 AMAQI
4th Jul 20253810 AMAQI
4th Jul 20253911 AMAQI
4th Jul 20253912 PMAQI
4th Jul 2025371 PMAQI
4th Jul 2025352 PMAQI
4th Jul 2025353 PMAQI
4th Jul 2025344 PMAQI
4th Jul 2025345 PMAQI
4th Jul 2025356 PMAQI
4th Jul 2025357 PMAQI
4th Jul 2025368 PMAQI
4th Jul 2025389 PMAQI
4th Jul 20253610 PMAQI
4th Jul 20253611 PMAQI
5th Jul 20253612 AMAQI
5th Jul 2025361 AMAQI
5th Jul 2025382 AMAQI
5th Jul 2025403 AMAQI
5th Jul 2025414 AMAQI
15°C11/20°C
5th Jul 2025405 AMAQI
5th Jul 2025396 AMAQI
5th Jul 2025387 AMAQI
5th Jul 2025418 AMAQI
5th Jul 2025429 AMAQI
5th Jul 20254310 AMAQI
5th Jul 20254111 AMAQI
5th Jul 20254012 PMAQI
5th Jul 2025361 PMAQI
5th Jul 2025362 PMAQI
5th Jul 2025363 PMAQI
5th Jul 2025354 PMAQI
5th Jul 2025355 PMAQI
5th Jul 2025346 PMAQI
5th Jul 2025367 PMAQI
5th Jul 2025358 PMAQI
5th Jul 2025349 PMAQI
5th Jul 20253410 PMAQI
5th Jul 20253511 PMAQI
6th Jul 20253612 AMAQI
6th Jul 2025361 AMAQI
6th Jul 2025402 AMAQI
6th Jul 2025403 AMAQI
6th Jul 2025424 AMAQI
16°C11/21°C
6th Jul 2025445 AMAQI
6th Jul 2025516 AMAQI
6th Jul 2025557 AMAQI
6th Jul 2025608 AMAQI
6th Jul 2025629 AMAQI
6th Jul 20256210 AMAQI
6th Jul 20255711 AMAQI
6th Jul 20254612 PMAQI
6th Jul 2025351 PMAQI
6th Jul 2025352 PMAQI
6th Jul 2025343 PMAQI
6th Jul 2025344 PMAQI
6th Jul 2025335 PMAQI
6th Jul 2025386 PMAQI
6th Jul 2025407 PMAQI
6th Jul 2025368 PMAQI
6th Jul 2025349 PMAQI
6th Jul 20253510 PMAQI
6th Jul 20253411 PMAQI
7th Jul 20253512 AMAQI
7th Jul 2025351 AMAQI
7th Jul 2025282 AMAQI
7th Jul 2025283 AMAQI
7th Jul 2025264 AMAQI
13°C9/19°C
7th Jul 2025265 AMAQI
7th Jul 2025296 AMAQI
7th Jul 2025287 AMAQI
7th Jul 2025278 AMAQI
7th Jul 2025309 AMAQI
7th Jul 20252910 AMAQI
7th Jul 20252911 AMAQI
7th Jul 20252712 PMAQI
7th Jul 2025251 PMAQI
7th Jul 2025262 PMAQI
7th Jul 2025263 PMAQI
7th Jul 2025274 PMAQI
7th Jul 2025265 PMAQI
7th Jul 2025266 PMAQI
7th Jul 2025277 PMAQI
7th Jul 2025268 PMAQI
7th Jul 2025259 PMAQI
7th Jul 20252510 PMAQI
7th Jul 20252511 PMAQI
8th Jul 20252712 AMAQI
8th Jul 2025281 AMAQI
8th Jul 2025232 AMAQI
8th Jul 2025163 AMAQI
8th Jul 2025164 AMAQI
10°C5/15°C
8th Jul 2025175 AMAQI
8th Jul 2025206 AMAQI
8th Jul 2025207 AMAQI
8th Jul 2025208 AMAQI
8th Jul 2025219 AMAQI
8th Jul 20252110 AMAQI
8th Jul 20252011 AMAQI
8th Jul 20252212 PMAQI
8th Jul 2025221 PMAQI
8th Jul 2025242 PMAQI
8th Jul 2025243 PMAQI
8th Jul 2025244 PMAQI
8th Jul 2025235 PMAQI
8th Jul 2025236 PMAQI
8th Jul 2025217 PMAQI
8th Jul 2025218 PMAQI
8th Jul 2025229 PMAQI
8th Jul 20252110 PMAQI
8th Jul 20252111 PMAQI
9th Jul 20252212 AMAQI
9th Jul 2025241 AMAQI
9th Jul 2025202 AMAQI
9th Jul 2025193 AMAQI
9th Jul 2025194 AMAQI
6°C4/7°C
9th Jul 2025185 AMAQI
9th Jul 2025206 AMAQI
9th Jul 2025227 AMAQI
9th Jul 2025228 AMAQI
9th Jul 2025249 AMAQI
9th Jul 20252410 AMAQI
9th Jul 20252111 AMAQI
9th Jul 20252312 PMAQI
9th Jul 2025221 PMAQI
9th Jul 2025202 PMAQI
9th Jul 2025203 PMAQI
9th Jul 2025214 PMAQI
9th Jul 2025215 PMAQI
9th Jul 2025216 PMAQI
9th Jul 2025217 PMAQI
9th Jul 2025218 PMAQI
9th Jul 2025219 PMAQI
9th Jul 20252110 PMAQI
9th Jul 20252211 PMAQI
10th Jul 20252412 AMAQI
10th Jul 2025251 AMAQI
10th Jul 2025282 AMAQI
10th Jul 2025303 AMAQI
10th Jul 2025304 AMAQI
8°C4/14°C
10th Jul 2025295 AMAQI
10th Jul 2025286 AMAQI
10th Jul 2025287 AMAQI
10th Jul 2025278 AMAQI
10th Jul 2025329 AMAQI
10th Jul 20252910 AMAQI
10th Jul 20253211 AMAQI
10th Jul 20252712 PMAQI
10th Jul 2025271 PMAQI
10th Jul 2025252 PMAQI
10th Jul 2025233 PMAQI
10th Jul 2025224 PMAQI
10th Jul 2025235 PMAQI
10th Jul 2025226 PMAQI
10th Jul 2025217 PMAQI
10th Jul 2025228 PMAQI
10th Jul 2025259 PMAQI
10th Jul 20252310 PMAQI
10th Jul 20252311 PMAQI
11th Jul 20252412 AMAQI
11th Jul 2025251 AMAQI
11th Jul 2025262 AMAQI
11th Jul 2025303 AMAQI
11th Jul 2025334 AMAQI
10°C3/16°C
11th Jul 2025315 AMAQI
11th Jul 2025316 AMAQI
11th Jul 2025297 AMAQI
11th Jul 2025308 AMAQI
11th Jul 2025359 AMAQI
11th Jul 20253110 AMAQI
11th Jul 20253111 AMAQI
11th Jul 20253412 PMAQI
11th Jul 2025311 PMAQI
11th Jul 2025282 PMAQI
11th Jul 2025263 PMAQI
11th Jul 2025264 PMAQI
11th Jul 2025275 PMAQI
11th Jul 2025276 PMAQI
11th Jul 2025267 PMAQI
11th Jul 2025258 PMAQI
11th Jul 2025269 PMAQI
11th Jul 20252810 PMAQI
11th Jul 20252611 PMAQI
12th Jul 20252712 AMAQI
12th Jul 2025291 AMAQI
12th Jul 2025282 AMAQI
12th Jul 2025293 AMAQI
12th Jul 2025304 AMAQI
11°C5/17°C
12th Jul 2025285 AMAQI
12th Jul 2025306 AMAQI
12th Jul 2025287 AMAQI
12th Jul 2025318 AMAQI
12th Jul 2025419 AMAQI
12th Jul 20253910 AMAQI
12th Jul 20253511 AMAQI
12th Jul 20253612 PMAQI
12th Jul 2025301 PMAQI
12th Jul 2025352 PMAQI
12th Jul 2025353 PMAQI
12th Jul 2025344 PMAQI
12th Jul 2025335 PMAQI
12th Jul 2025296 PMAQI
12th Jul 2025287 PMAQI
12th Jul 2025318 PMAQI
12th Jul 2025319 PMAQI
12th Jul 20253210 PMAQI
12th Jul 20253311 PMAQI
13th Jul 20253712 AMAQI
13th Jul 2025391 AMAQI
13th Jul 2025462 AMAQI
13th Jul 2025513 AMAQI
13th Jul 2025524 AMAQI
12°C7/19°C
13th Jul 2025545 AMAQI
13th Jul 2025536 AMAQI
13th Jul 2025537 AMAQI
13th Jul 2025558 AMAQI
13th Jul 2025609 AMAQI
13th Jul 20255810 AMAQI
13th Jul 20255311 AMAQI
13th Jul 20254512 PMAQI
13th Jul 2025411 PMAQI
13th Jul 2025432 PMAQI
13th Jul 2025403 PMAQI
13th Jul 2025394 PMAQI
13th Jul 2025395 PMAQI
13th Jul 2025396 PMAQI
13th Jul 2025387 PMAQI
13th Jul 2025408 PMAQI
13th Jul 2025399 PMAQI
13th Jul 20253310 PMAQI
13th Jul 20253611 PMAQI
14th Jul 20253912 AMAQI
14th Jul 2025391 AMAQI
14th Jul 2025372 AMAQI
14th Jul 2025413 AMAQI
14th Jul 2025414 AMAQI
14°C9/20°C
14th Jul 2025385 AMAQI
14th Jul 2025366 AMAQI
14th Jul 2025387 AMAQI
14th Jul 2025368 AMAQI
14th Jul 2025369 AMAQI
14th Jul 20253210 AMAQI
14th Jul 20252911 AMAQI
14th Jul 20252912 PMAQI
14th Jul 2025291 PMAQI
14th Jul 2025282 PMAQI
14th Jul 2025293 PMAQI
14th Jul 2025294 PMAQI
14th Jul 2025315 PMAQI
14th Jul 2025306 PMAQI
14th Jul 2025337 PMAQI
14th Jul 2025318 PMAQI
14th Jul 2025309 PMAQI
14th Jul 20253410 PMAQI
14th Jul 20253411 PMAQI
15th Jul 20253812 AMAQI
15th Jul 2025401 AMAQI
15th Jul 2025282 AMAQI
15th Jul 2025233 AMAQI
15th Jul 2025264 AMAQI
13°C10/19°C
15th Jul 2025225 AMAQI
15th Jul 2025336 AMAQI
15th Jul 2025337 AMAQI
15th Jul 2025288 AMAQI
15th Jul 2025289 AMAQI
15th Jul 20252610 AMAQI
15th Jul 20252711 AMAQI
15th Jul 20252812 PMAQI
15th Jul 2025251 PMAQI
15th Jul 2025262 PMAQI
15th Jul 2025263 PMAQI
15th Jul 2025264 PMAQI
15th Jul 2025275 PMAQI
15th Jul 2025286 PMAQI
15th Jul 2025317 PMAQI
15th Jul 2025298 PMAQI
15th Jul 2025329 PMAQI
15th Jul 20253210 PMAQI
15th Jul 20253111 PMAQI
16th Jul 20252912 AMAQI
16th Jul 2025311 AMAQI
16th Jul 2025302 AMAQI
16th Jul 2025283 AMAQI
16th Jul 2025274 AMAQI
13°C9/20°C
16th Jul 2025285 AMAQI
16th Jul 2025296 AMAQI
16th Jul 2025287 AMAQI
16th Jul 2025288 AMAQI
16th Jul 2025299 AMAQI
16th Jul 20252810 AMAQI
16th Jul 20252911 AMAQI
16th Jul 20252812 PMAQI
16th Jul 2025281 PMAQI
16th Jul 2025332 PMAQI
16th Jul 2025313 PMAQI
16th Jul 2025304 PMAQI
16th Jul 2025285 PMAQI
16th Jul 2025276 PMAQI
16th Jul 2025267 PMAQI
16th Jul 2025268 PMAQI
16th Jul 2025279 PMAQI
16th Jul 20252810 PMAQI
16th Jul 20252811 PMAQI
17th Jul 20252812 AMAQI
17th Jul 2025281 AMAQI
17th Jul 2025232 AMAQI
17th Jul 2025203 AMAQI
17th Jul 2025214 AMAQI
11°C9/14°C
17th Jul 2025235 AMAQI
17th Jul 2025256 AMAQI
17th Jul 2025237 AMAQI
17th Jul 2025238 AMAQI
17th Jul 2025229 AMAQI
17th Jul 20252310 AMAQI
17th Jul 20252211 AMAQI
17th Jul 20252012 PMAQI
17th Jul 2025211 PMAQI
17th Jul 2025222 PMAQI
17th Jul 2025223 PMAQI
17th Jul 2025234 PMAQI
17th Jul 2025235 PMAQI
17th Jul 2025236 PMAQI
17th Jul 2025227 PMAQI
17th Jul 2025228 PMAQI
17th Jul 2025239 PMAQI
17th Jul 20252710 PMAQI
17th Jul 20252311 PMAQI
18th Jul 20252312 AMAQI
18th Jul 2025231 AMAQI
18th Jul 2025202 AMAQI
18th Jul 2025183 AMAQI
18th Jul 2025234 AMAQI
12°C9/18°C
18th Jul 2025215 AMAQI
18th Jul 2025206 AMAQI
18th Jul 2025217 AMAQI
18th Jul 2025228 AMAQI
18th Jul 2025229 AMAQI
18th Jul 20252210 AMAQI
18th Jul 20252111 AMAQI
18th Jul 20252212 PMAQI
18th Jul 2025221 PMAQI
18th Jul 2025212 PMAQI
18th Jul 2025213 PMAQI
18th Jul 2025214 PMAQI
18th Jul 2025215 PMAQI
18th Jul 2025226 PMAQI
18th Jul 2025227 PMAQI
18th Jul 2025228 PMAQI
18th Jul 2025229 PMAQI
18th Jul 20252210 PMAQI
18th Jul 20252211 PMAQI
19th Jul 20252212 AMAQI
19th Jul 2025221 AMAQI
19th Jul 2025232 AMAQI
19th Jul 2025243 AMAQI
19th Jul 2025254 AMAQI
14°C7/21°C
19th Jul 2025265 AMAQI
19th Jul 2025266 AMAQI
19th Jul 2025247 AMAQI
19th Jul 2025258 AMAQI
19th Jul 2025269 AMAQI
19th Jul 20252510 AMAQI
19th Jul 20252511 AMAQI
19th Jul 20252612 PMAQI
19th Jul 2025271 PMAQI
19th Jul 2025252 PMAQI
19th Jul 2025243 PMAQI
19th Jul 2025244 PMAQI
19th Jul 2025235 PMAQI
19th Jul 2025236 PMAQI
19th Jul 2025237 PMAQI
19th Jul 2025248 PMAQI
19th Jul 2025249 PMAQI
19th Jul 20252510 PMAQI
19th Jul 20252411 PMAQI
20th Jul 20252612 AMAQI
20th Jul 2025261 AMAQI
20th Jul 2025282 AMAQI
20th Jul 2025283 AMAQI
20th Jul 2025264 AMAQI
16°C11/25°C
20th Jul 2025245 AMAQI
20th Jul 2025256 AMAQI
20th Jul 2025257 AMAQI
20th Jul 2025258 AMAQI
20th Jul 2025269 AMAQI
20th Jul 20252810 AMAQI
20th Jul 20253011 AMAQI
20th Jul 20252712 PMAQI
20th Jul 2025251 PMAQI
20th Jul 2025272 PMAQI
20th Jul 2025263 PMAQI
20th Jul 2025264 PMAQI
20th Jul 2025265 PMAQI
20th Jul 2025266 PMAQI
20th Jul 2025267 PMAQI
20th Jul 2025278 PMAQI
20th Jul 2025279 PMAQI
20th Jul 20252610 PMAQI
20th Jul 20252611 PMAQI
21st Jul 20252712 AMAQI
21st Jul 2025291 AMAQI
21st Jul 2025262 AMAQI
21st Jul 2025203 AMAQI
21st Jul 2025214 AMAQI
16°C10/23°C
21st Jul 2025215 AMAQI
21st Jul 2025236 AMAQI
21st Jul 2025227 AMAQI
21st Jul 2025218 AMAQI
21st Jul 2025219 AMAQI
21st Jul 20251910 AMAQI
21st Jul 20251911 AMAQI
21st Jul 20252212 PMAQI
21st Jul 2025211 PMAQI
21st Jul 2025242 PMAQI
21st Jul 2025243 PMAQI
21st Jul 2025224 PMAQI
21st Jul 2025205 PMAQI
21st Jul 2025216 PMAQI
21st Jul 2025217 PMAQI
21st Jul 2025208 PMAQI
21st Jul 2025219 PMAQI
21st Jul 20252210 PMAQI
21st Jul 20252211 PMAQI
22nd Jul 20252212 AMAQI
22nd Jul 2025231 AMAQI
22nd Jul 2025182 AMAQI
22nd Jul 2025163 AMAQI
22nd Jul 2025154 AMAQI
10°C8/13°C
22nd Jul 2025155 AMAQI
22nd Jul 2025166 AMAQI
22nd Jul 2025167 AMAQI
22nd Jul 2025168 AMAQI
22nd Jul 2025169 AMAQI
22nd Jul 20251510 AMAQI
22nd Jul 20251711 AMAQI
22nd Jul 20251712 PMAQI
22nd Jul 2025181 PMAQI
22nd Jul 2025182 PMAQI
22nd Jul 2025183 PMAQI
22nd Jul 2025164 PMAQI
22nd Jul 2025175 PMAQI
22nd Jul 2025166 PMAQI
22nd Jul 2025177 PMAQI
22nd Jul 2025168 PMAQI
22nd Jul 2025179 PMAQI
22nd Jul 20251710 PMAQI
22nd Jul 20251711 PMAQI
23rd Jul 20251712 AMAQI
23rd Jul 2025181 AMAQI
23rd Jul 2025162 AMAQI
23rd Jul 2025143 AMAQI
23rd Jul 2025174 AMAQI
12°C7/17°C
23rd Jul 2025175 AMAQI
23rd Jul 2025176 AMAQI
23rd Jul 2025177 AMAQI
23rd Jul 2025188 AMAQI
23rd Jul 2025199 AMAQI
23rd Jul 20251810 AMAQI
23rd Jul 20251711 AMAQI
23rd Jul 20251712 PMAQI
23rd Jul 2025171 PMAQI
23rd Jul 2025182 PMAQI
23rd Jul 2025173 PMAQI
23rd Jul 2025174 PMAQI
23rd Jul 2025175 PMAQI
23rd Jul 2025176 PMAQI
23rd Jul 2025177 PMAQI
23rd Jul 2025178 PMAQI
23rd Jul 2025189 PMAQI
23rd Jul 20251610 PMAQI
23rd Jul 20251711 PMAQI
24th Jul 20251812 AMAQI
24th Jul 2025181 AMAQI
24th Jul 2025172 AMAQI
24th Jul 2025153 AMAQI
24th Jul 2025174 AMAQI
12°C7/17°C
24th Jul 2025165 AMAQI
24th Jul 2025176 AMAQI
24th Jul 2025177 AMAQI
24th Jul 2025168 AMAQI
24th Jul 2025179 AMAQI
24th Jul 20251710 AMAQI
24th Jul 20251811 AMAQI
24th Jul 20251812 PMAQI
24th Jul 2025171 PMAQI
24th Jul 2025182 PMAQI
24th Jul 2025183 PMAQI
24th Jul 2025184 PMAQI
24th Jul 2025175 PMAQI
24th Jul 2025176 PMAQI
24th Jul 2025207 PMAQI
24th Jul 2025188 PMAQI
24th Jul 2025179 PMAQI
24th Jul 20251810 PMAQI
24th Jul 20251711 PMAQI
25th Jul 20251712 AMAQI
25th Jul 2025191 AMAQI
25th Jul 2025162 AMAQI
25th Jul 2025163 AMAQI
25th Jul 2025164 AMAQI
10°C9/12°C
25th Jul 2025165 AMAQI
25th Jul 2025176 AMAQI
25th Jul 2025187 AMAQI
25th Jul 2025188 AMAQI
25th Jul 2025189 AMAQI
25th Jul 20251710 AMAQI
25th Jul 20251611 AMAQI
25th Jul 20251712 PMAQI
25th Jul 2025151 PMAQI
25th Jul 2025162 PMAQI
25th Jul 2025163 PMAQI
25th Jul 2025164 PMAQI
25th Jul 2025165 PMAQI
25th Jul 2025166 PMAQI
25th Jul 2025167 PMAQI
25th Jul 2025178 PMAQI
25th Jul 2025179 PMAQI
25th Jul 20251710 PMAQI
25th Jul 20251711 PMAQI
26th Jul 20251812 AMAQI
26th Jul 2025181 AMAQI
26th Jul 2025182 AMAQI
26th Jul 2025173 AMAQI
26th Jul 2025184 AMAQI
10°C7/14°C
26th Jul 2025185 AMAQI
26th Jul 2025196 AMAQI
26th Jul 2025207 AMAQI
26th Jul 2025188 AMAQI
26th Jul 2025219 AMAQI
26th Jul 20252010 AMAQI
26th Jul 20252111 AMAQI
26th Jul 20252112 PMAQI
26th Jul 2025221 PMAQI
26th Jul 2025222 PMAQI
26th Jul 2025213 PMAQI
26th Jul 2025214 PMAQI
26th Jul 2025205 PMAQI
26th Jul 2025206 PMAQI
26th Jul 2025207 PMAQI
26th Jul 2025218 PMAQI
26th Jul 2025219 PMAQI
26th Jul 20252110 PMAQI
26th Jul 20252111 PMAQI
27th Jul 20252012 AMAQI
27th Jul 2025201 AMAQI
27th Jul 2025202 AMAQI
27th Jul 2025193 AMAQI
27th Jul 2025214 AMAQI
8°C7/10°C
27th Jul 2025205 AMAQI
27th Jul 2025216 AMAQI
27th Jul 2025217 AMAQI
27th Jul 2025198 AMAQI
27th Jul 2025209 AMAQI
27th Jul 20252110 AMAQI
27th Jul 20252011 AMAQI
27th Jul 20252012 PMAQI
27th Jul 2025191 PMAQI
27th Jul 2025212 PMAQI
27th Jul 2025203 PMAQI
27th Jul 2025214 PMAQI
27th Jul 2025215 PMAQI
27th Jul 2025206 PMAQI
27th Jul 2025217 PMAQI
27th Jul 2025208 PMAQI
27th Jul 2025209 PMAQI
27th Jul 20252010 PMAQI
27th Jul 20252111 PMAQI
28th Jul 20252112 AMAQI
28th Jul 2025221 AMAQI
28th Jul 2025182 AMAQI
28th Jul 2025183 AMAQI
28th Jul 2025164 AMAQI
10°C8/14°C
28th Jul 2025225 AMAQI
28th Jul 2025186 AMAQI
28th Jul 2025187 AMAQI
28th Jul 2025188 AMAQI
28th Jul 2025179 AMAQI
28th Jul 20251610 AMAQI
28th Jul 20251911 AMAQI
28th Jul 20251612 PMAQI
28th Jul 2025171 PMAQI
28th Jul 2025172 PMAQI
28th Jul 2025183 PMAQI
28th Jul 2025184 PMAQI
28th Jul 2025195 PMAQI
28th Jul 2025186 PMAQI
28th Jul 2025187 PMAQI
28th Jul 2025188 PMAQI
28th Jul 2025199 PMAQI
28th Jul 20252010 PMAQI
28th Jul 20251911 PMAQI
29th Jul 20251912 AMAQI
29th Jul 2025191 AMAQI
29th Jul 2025192 AMAQI
29th Jul 2025183 AMAQI
29th Jul 2025184 AMAQI
7°C7/8°C
29th Jul 2025185 AMAQI
29th Jul 2025206 AMAQI
29th Jul 2025207 AMAQI
29th Jul 2025218 AMAQI
29th Jul 2025219 AMAQI
29th Jul 20252010 AMAQI
29th Jul 20252111 AMAQI
29th Jul 20252112 PMAQI
29th Jul 2025211 PMAQI
29th Jul 2025192 PMAQI
29th Jul 2025203 PMAQI
29th Jul 2025194 PMAQI
29th Jul 2025195 PMAQI
29th Jul 2025206 PMAQI
29th Jul 2025207 PMAQI
29th Jul 2025218 PMAQI
29th Jul 2025209 PMAQI
29th Jul 20252010 PMAQI
29th Jul 20252011 PMAQI
30th Jul 20252012 AMAQI
30th Jul 2025211 AMAQI
30th Jul 2025222 AMAQI
30th Jul 2025203 AMAQI
30th Jul 2025214 AMAQI
9°C6/14°C
30th Jul 2025205 AMAQI
30th Jul 2025206 AMAQI
30th Jul 2025227 AMAQI
30th Jul 2025218 AMAQI
30th Jul 2025239 AMAQI
30th Jul 20252210 AMAQI
30th Jul 20252211 AMAQI
30th Jul 20252312 PMAQI
30th Jul 2025221 PMAQI
30th Jul 2025212 PMAQI
30th Jul 2025213 PMAQI
30th Jul 2025204 PMAQI
30th Jul 2025215 PMAQI
30th Jul 2025226 PMAQI
30th Jul 2025227 PMAQI
30th Jul 2025228 PMAQI
30th Jul 2025239 PMAQI
30th Jul 20252310 PMAQI
30th Jul 20252311 PMAQI
31st Jul 20252312 AMAQI
31st Jul 2025231 AMAQI
31st Jul 2025232 AMAQI
31st Jul 2025233 AMAQI
31st Jul 2025224 AMAQI
10°C4/16°C
31st Jul 2025215 AMAQI
31st Jul 2025216 AMAQI
31st Jul 2025217 AMAQI
31st Jul 2025228 AMAQI
31st Jul 2025239 AMAQI
31st Jul 20252210 AMAQI
31st Jul 20252211 AMAQI
31st Jul 20252012 PMAQI
31st Jul 2025201 PMAQI
31st Jul 2025222 PMAQI
31st Jul 2025213 PMAQI
31st Jul 2025234 PMAQI
31st Jul 2025245 PMAQI
31st Jul 2025236 PMAQI
31st Jul 2025237 PMAQI
31st Jul 2025248 PMAQI
31st Jul 2025249 PMAQI
31st Jul 20252410 PMAQI
31st Jul 20252411 PMAQI
1st Aug 20252212 AMAQI
1st Aug 2025221 AMAQI
1st Aug 2025232 AMAQI
1st Aug 2025223 AMAQI
1st Aug 2025204 AMAQI
11°C5/16°C
1st Aug 2025225 AMAQI
1st Aug 2025226 AMAQI
1st Aug 2025227 AMAQI
1st Aug 2025238 AMAQI
1st Aug 2025229 AMAQI
1st Aug 20252210 AMAQI
1st Aug 20252211 AMAQI
1st Aug 20252312 PMAQI
1st Aug 2025231 PMAQI
1st Aug 2025242 PMAQI
1st Aug 2025243 PMAQI
1st Aug 2025244 PMAQI
1st Aug 2025225 PMAQI
1st Aug 2025246 PMAQI
1st Aug 2025247 PMAQI
1st Aug 2025248 PMAQI
1st Aug 2025249 PMAQI
1st Aug 20252210 PMAQI
1st Aug 20252311 PMAQI
2nd Aug 20252312 AMAQI
2nd Aug 2025231 AMAQI
2nd Aug 2025252 AMAQI
2nd Aug 2025233 AMAQI
2nd Aug 2025234 AMAQI
11°C7/16°C
2nd Aug 2025225 AMAQI
5 AM2nd Aug 2025236 AMAQI
2nd Aug 2025227 AMAQI
2nd Aug 2025188 AMAQI
2nd Aug 2025189 AMAQI
2nd Aug 20251710 AMAQI
2nd Aug 20252011 AMAQI
2nd Aug 20252012 PMAQI
2nd Aug 2025221 PMAQI
1 PM2nd Aug 2025212 PMAQI
2nd Aug 2025223 PMAQI
2nd Aug 2025224 PMAQI
2nd Aug 2025225 PMAQI
2nd Aug 2025226 PMAQI
2nd Aug 2025277 PMAQI
9 PM
1 AM
4 AM
--°C/°C
Day time
Avg. Highest Time
5 AM - 9 PM
26AQI
17 hours / Day
510 hours / Month
Avg. Lowest Time
5 AM - 9 PM
26AQI
17 hours / Day
510 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 5 AM to 9 PM (Avg. 26), while the lowest AQI was between 5 AM to 9 PM (Avg. 26).
Night time
Avg. Highest Time
12 AM - 11 PM
26AQI
7 hours / Day
210 hours / Month
Avg. Lowest Time
12 AM - 11 PM
26AQI
7 hours / Day
210 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 12 AM to 11 PM (Avg. 26), while the lowest AQI was between 12 AM to 11 PM (Avg. 26).
2025 Days Vs Air Quality
Chur, Graubunden, Switzerland
2025
76%
162
24%
51
Total number of days with different AQI categories in last 214 days in 2025 (151 days remaining)
Good
162 DaysModerate
51 DaysPoor
0 DaysUnhealthy
0 DaysSevere
0 DaysHazardous
0 DaysUnder WHO’s Safe Air Quality Limits: 76%
Health Risk Level:
Low
In 2025, 76% of 214 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
Chur, Graubunden, Switzerland
AQI levels in 2025
AQI
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.
1st January 2025
66AQI
66AQI
2nd January 2025
65AQI
65AQI
3rd January 2025
60AQI
60AQI
4th January 2025
59AQI
59AQI
5th January 2025
58AQI
58AQI
6th January 2025
54AQI
54AQI
7th January 2025
48AQI
48AQI
8th January 2025
41AQI
41AQI
9th January 2025
36AQI
36AQI
10th January 2025
32AQI
32AQI
11th January 2025
34AQI
34AQI
12th January 2025
35AQI
35AQI
13th January 2025
43AQI
43AQI
14th January 2025
50AQI
50AQI
15th January 2025
55AQI
55AQI
16th January 2025
56AQI
56AQI
17th January 2025
57AQI
57AQI
18th January 2025
59AQI
59AQI
19th January 2025
60AQI
60AQI
20th January 2025
60AQI
60AQI
21st January 2025
60AQI
60AQI
22nd January 2025
59AQI
59AQI
23rd January 2025
57AQI
57AQI
24th January 2025
55AQI
55AQI
25th January 2025
52AQI
52AQI
26th January 2025
46AQI
46AQI
27th January 2025
40AQI
40AQI
28th January 2025
36AQI
36AQI
29th January 2025
32AQI
32AQI
30th January 2025
32AQI
32AQI
31st January 2025
32AQI
32AQI
1st February 2025
40AQI
40AQI
2nd February 2025
45AQI
45AQI
3rd February 2025
46AQI
46AQI
4th February 2025
52AQI
52AQI
5th February 2025
56AQI
56AQI
6th February 2025
57AQI
57AQI
7th February 2025
58AQI
58AQI
8th February 2025
57AQI
57AQI
9th February 2025
58AQI
58AQI
10th February 2025
61AQI
61AQI
11th February 2025
63AQI
63AQI
12th February 2025
63AQI
63AQI
13th February 2025
60AQI
60AQI
14th February 2025
57AQI
57AQI
15th February 2025
58AQI
58AQI
16th February 2025
59AQI
59AQI
17th February 2025
60AQI
60AQI
18th February 2025
62AQI
62AQI
19th February 2025
63AQI
63AQI
20th February 2025
64AQI
64AQI
21st February 2025
62AQI
62AQI
22nd February 2025
60AQI
60AQI
23rd February 2025
59AQI
59AQI
24th February 2025
57AQI
57AQI
25th February 2025
56AQI
56AQI
26th February 2025
52AQI
52AQI
27th February 2025
48AQI
48AQI
28th February 2025
43AQI
43AQI
1st March 2025
42AQI
42AQI
2nd March 2025
44AQI
44AQI
3rd March 2025
44AQI
44AQI
4th March 2025
46AQI
46AQI
5th March 2025
47AQI
47AQI
6th March 2025
49AQI
49AQI
7th March 2025
51AQI
51AQI
8th March 2025
52AQI
52AQI
9th March 2025
52AQI
52AQI
10th March 2025
50AQI
50AQI
11th March 2025
47AQI
47AQI
12th March 2025
42AQI
42AQI
13th March 2025
38AQI
38AQI
14th March 2025
36AQI
36AQI
15th March 2025
34AQI
34AQI
16th March 2025
32AQI
32AQI
17th March 2025
33AQI
33AQI
18th March 2025
35AQI
35AQI
19th March 2025
37AQI
37AQI
20th March 2025
38AQI
38AQI
21st March 2025
37AQI
37AQI
22nd March 2025
38AQI
38AQI
23rd March 2025
35AQI
35AQI
24th March 2025
32AQI
32AQI
25th March 2025
31AQI
31AQI
26th March 2025
33AQI
33AQI
27th March 2025
35AQI
35AQI
28th March 2025
35AQI
35AQI
29th March 2025
38AQI
38AQI
30th March 2025
34AQI
34AQI
31st March 2025
32AQI
32AQI
1st April 2025
31AQI
31AQI
2nd April 2025
31AQI
31AQI
3rd April 2025
33AQI
33AQI
4th April 2025
33AQI
33AQI
5th April 2025
30AQI
30AQI
6th April 2025
25AQI
25AQI
7th April 2025
24AQI
24AQI
8th April 2025
27AQI
27AQI
9th April 2025
30AQI
30AQI
10th April 2025
33AQI
33AQI
11th April 2025
33AQI
33AQI
12th April 2025
29AQI
29AQI
13th April 2025
32AQI
32AQI
14th April 2025
28AQI
28AQI
15th April 2025
27AQI
27AQI
16th April 2025
23AQI
23AQI
17th April 2025
20AQI
20AQI
18th April 2025
17AQI
17AQI
19th April 2025
20AQI
20AQI
20th April 2025
20AQI
20AQI
21st April 2025
16AQI
16AQI
22nd April 2025
17AQI
17AQI
23rd April 2025
20AQI
20AQI
24th April 2025
16AQI
16AQI
25th April 2025
16AQI
16AQI
26th April 2025
19AQI
19AQI
27th April 2025
23AQI
23AQI
28th April 2025
25AQI
25AQI
29th April 2025
27AQI
27AQI
30th April 2025
27AQI
27AQI
1st May 2025
32AQI
32AQI
2nd May 2025
42AQI
42AQI
3rd May 2025
39AQI
39AQI
4th May 2025
33AQI
33AQI
5th May 2025
22AQI
22AQI
6th May 2025
22AQI
22AQI
7th May 2025
26AQI
26AQI
8th May 2025
32AQI
32AQI
9th May 2025
39AQI
39AQI
10th May 2025
30AQI
30AQI
11th May 2025
26AQI
26AQI
12th May 2025
25AQI
25AQI
13th May 2025
25AQI
25AQI
14th May 2025
28AQI
28AQI
15th May 2025
30AQI
30AQI
16th May 2025
24AQI
24AQI
17th May 2025
23AQI
23AQI
18th May 2025
27AQI
27AQI
19th May 2025
27AQI
27AQI
20th May 2025
33AQI
33AQI
21st May 2025
33AQI
33AQI
22nd May 2025
26AQI
26AQI
23rd May 2025
23AQI
23AQI
24th May 2025
22AQI
22AQI
25th May 2025
21AQI
21AQI
26th May 2025
21AQI
21AQI
27th May 2025
21AQI
21AQI
28th May 2025
21AQI
21AQI
29th May 2025
23AQI
23AQI
30th May 2025
32AQI
32AQI
31st May 2025
29AQI
29AQI
1st June 2025
34AQI
34AQI
2nd June 2025
34AQI
34AQI
3rd June 2025
31AQI
31AQI
4th June 2025
35AQI
35AQI
5th June 2025
36AQI
36AQI
6th June 2025
37AQI
37AQI
7th June 2025
32AQI
32AQI
8th June 2025
39AQI
39AQI
9th June 2025
55AQI
55AQI
10th June 2025
59AQI
59AQI
11th June 2025
62AQI
62AQI
12th June 2025
62AQI
62AQI
13th June 2025
58AQI
58AQI
14th June 2025
54AQI
54AQI
15th June 2025
52AQI
52AQI
16th June 2025
43AQI
43AQI
17th June 2025
38AQI
38AQI
18th June 2025
41AQI
41AQI
19th June 2025
45AQI
45AQI
20th June 2025
51AQI
51AQI
21st June 2025
45AQI
45AQI
22nd June 2025
46AQI
46AQI
23rd June 2025
44AQI
44AQI
24th June 2025
41AQI
41AQI
25th June 2025
44AQI
44AQI
26th June 2025
47AQI
47AQI
27th June 2025
36AQI
36AQI
28th June 2025
34AQI
34AQI
29th June 2025
37AQI
37AQI
30th June 2025
39AQI
39AQI
1st July 2025
36AQI
36AQI
2nd July 2025
32AQI
32AQI
3rd July 2025
34AQI
34AQI
4th July 2025
37AQI
37AQI
5th July 2025
37AQI
37AQI
6th July 2025
42AQI
42AQI
7th July 2025
28AQI
28AQI
8th July 2025
21AQI
21AQI
9th July 2025
21AQI
21AQI
10th July 2025
26AQI
26AQI
11th July 2025
28AQI
28AQI
12th July 2025
32AQI
32AQI
13th July 2025
45AQI
45AQI
14th July 2025
34AQI
34AQI
15th July 2025
29AQI
29AQI
16th July 2025
28AQI
28AQI
17th July 2025
23AQI
23AQI
18th July 2025
22AQI
22AQI
19th July 2025
24AQI
24AQI
20th July 2025
26AQI
26AQI
21st July 2025
22AQI
22AQI
22nd July 2025
17AQI
17AQI
23rd July 2025
17AQI
17AQI
24th July 2025
17AQI
17AQI
25th July 2025
17AQI
17AQI
26th July 2025
20AQI
20AQI
27th July 2025
20AQI
20AQI
28th July 2025
18AQI
18AQI
29th July 2025
20AQI
20AQI
30th July 2025
22AQI
22AQI
31st July 2025
23AQI
23AQI
1st August 2025
22AQI
22AQI
49AQI
56AQI
40AQI
25AQI
28AQI
44AQI
26AQI
22AQI
No. of days
Jan.Feb.Mar.Apr.MayJun.Jul.Aug.Sep.Oct.Nov.Dec.Total Days
202538AQI
14
17
5
23
28
3
30
31
22
8
31
1
162
51
Highest AQI recorded in
February56AQI
Lowest AQI recorded in
August22AQI
202426AQI
31
29
30
1
30
31
30
31
31
30
31
30
22
9
356
10
Highest AQI recorded in
December45AQI
Lowest AQI recorded in
October20AQI
202324AQI
31
28
31
30
31
30
31
31
30
30
29
31
363
Highest AQI recorded in
June38AQI
Lowest AQI recorded in
December17AQI
202224AQI
31
21
31
30
31
30
24
3
29
31
30
31
322
Highest AQI recorded in
March34AQI
Lowest AQI recorded in
October17AQI
202124AQI
30
26
2
31
30
31
30
31
31
30
31
30
31
362
2
Highest AQI recorded in
April31AQI
Lowest AQI recorded in
November15AQI
202022AQI
13
21
18
30
31
31
30
30
28
31
263
Highest AQI recorded in
April33AQI
Lowest AQI recorded in
November15AQI
Most & Least Polluted Years Over the Last 6 Years
Most Polluted Year Recorded
2025(Avg.)
38AQILeast Polluted Year Recorded
2020(Avg.)
22AQIChur's annual 2025 AQI (38) shows an average percentage change of 58.1% (worsened AQI) compared to previous years: 2020 (22), 2021 (24), 2022 (24), 2023 (24), 2024 (26).
