Willows Colusa, Willows, California, 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+
August Air Quality Analysis
Willows Colusa, Willows, California, United States
2021
2022
2023
2024
2025
AQI
.
Days
AQI Trends: Highest and Lowest
Highest AQI recorded on
6th Aug 2021
173AQILowest AQI recorded on
24th Aug 2024
22AQISame Day Analysis (11th August ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 2nd highest AQI at 41 of Good air quality, showing improvement over 2021 on the same day.
Download 2024 Annual Data
World Air Quality Report
Day & Night AQI Trend: 11th Aug - 12th Aug 2025
Willows Colusa, Willows, California, United States
AQI
Day
Night
.
6 AM11th Aug 2025
8 PM
5 AM12th Aug 2025
Day time
Avg. Highest Time
6AM11th Aug
46AQI
Avg. Lowest Time
11AM11th Aug
33AQI
Night time
Avg. Highest Time
1AM12th Aug
50AQI
Avg. Lowest Time
5AM12th Aug
32AQI
In the last 24 hours,
Willows Colusa's AQI reached its highest point of 50 at 1 AM during the Night, while the lowest point, 32, was recorded at 5 AM during the Night between 11th Aug and 12th Aug 2025.
Day & Night AQI Trend : Jul - Aug 2025
Willows Colusa, Willows, California, United States
JulAug
13th - 14th14th - 15th15th - 16th16th - 17th17th - 18th18th - 19th19th - 20th20th - 21st21st - 22nd22nd - 23rd23rd - 24th24th - 25th25th - 26th26th - 27th27th - 28th28th - 29th29th - 30th30th - 31st31st - 01st01st - 02nd02nd - 03rd03rd - 04th04th - 05th05th - 06th06th - 07th07th - 08th08th - 09th09th - 10th10th - 11th11th - 12th12th
Day
Night
13th Jul 2025486 AMAQI
13th Jul 2025527 AMAQI
13th Jul 2025508 AMAQI
13th Jul 2025469 AMAQI
13th Jul 20254410 AMAQI
13th Jul 20254111 AMAQI
13th Jul 20254312 PMAQI
13th Jul 2025401 PMAQI
13th Jul 2025442 PMAQI
13th Jul 2025513 PMAQI
13th Jul 2025524 PMAQI
13th Jul 2025525 PMAQI
13th Jul 2025536 PMAQI
13th Jul 2025557 PMAQI
13th Jul 2025558 PMAQI
13th Jul 2025529 PMAQI
13th Jul 20255310 PMAQI
13th Jul 20255411 PMAQI
14th Jul 20255412 AMAQI
14th Jul 2025531 AMAQI
14th Jul 2025522 AMAQI
14th Jul 2025533 AMAQI
14th Jul 2025554 AMAQI
14th Jul 2025445 AMAQI
30°C18/42°C
14th Jul 2025366 AMAQI
14th Jul 2025387 AMAQI
14th Jul 2025378 AMAQI
14th Jul 2025339 AMAQI
14th Jul 20253010 AMAQI
14th Jul 20253011 AMAQI
14th Jul 20253312 PMAQI
14th Jul 2025401 PMAQI
14th Jul 2025452 PMAQI
14th Jul 2025433 PMAQI
14th Jul 2025444 PMAQI
14th Jul 2025445 PMAQI
14th Jul 2025506 PMAQI
14th Jul 2025527 PMAQI
14th Jul 2025498 PMAQI
14th Jul 2025449 PMAQI
14th Jul 20254510 PMAQI
14th Jul 20254611 PMAQI
15th Jul 20254712 AMAQI
15th Jul 2025441 AMAQI
15th Jul 2025482 AMAQI
15th Jul 2025473 AMAQI
15th Jul 2025484 AMAQI
15th Jul 2025385 AMAQI
30°C19/42°C
15th Jul 2025306 AMAQI
15th Jul 2025347 AMAQI
15th Jul 2025318 AMAQI
15th Jul 2025299 AMAQI
15th Jul 20253110 AMAQI
15th Jul 20253311 AMAQI
15th Jul 20253012 PMAQI
15th Jul 2025311 PMAQI
15th Jul 2025362 PMAQI
15th Jul 2025353 PMAQI
15th Jul 2025374 PMAQI
15th Jul 2025415 PMAQI
15th Jul 2025406 PMAQI
15th Jul 2025417 PMAQI
15th Jul 2025408 PMAQI
15th Jul 2025489 PMAQI
15th Jul 20254410 PMAQI
15th Jul 20254011 PMAQI
16th Jul 20254012 AMAQI
16th Jul 2025381 AMAQI
16th Jul 2025382 AMAQI
16th Jul 2025363 AMAQI
16th Jul 2025254 AMAQI
16th Jul 2025205 AMAQI
27°C16/38°C
16th Jul 2025206 AMAQI
16th Jul 2025257 AMAQI
16th Jul 2025258 AMAQI
16th Jul 2025289 AMAQI
16th Jul 20253110 AMAQI
16th Jul 20253011 AMAQI
16th Jul 20252912 PMAQI
16th Jul 2025281 PMAQI
16th Jul 2025322 PMAQI
16th Jul 2025323 PMAQI
16th Jul 2025344 PMAQI
16th Jul 2025345 PMAQI
16th Jul 2025366 PMAQI
16th Jul 2025347 PMAQI
16th Jul 2025358 PMAQI
16th Jul 2025399 PMAQI
16th Jul 20253610 PMAQI
16th Jul 20253411 PMAQI
17th Jul 20253212 AMAQI
17th Jul 2025321 AMAQI
17th Jul 2025282 AMAQI
17th Jul 2025293 AMAQI
17th Jul 2025284 AMAQI
17th Jul 2025265 AMAQI
24°C14/36°C
17th Jul 2025276 AMAQI
17th Jul 2025277 AMAQI
17th Jul 2025288 AMAQI
17th Jul 2025289 AMAQI
17th Jul 20252810 AMAQI
17th Jul 20252811 AMAQI
17th Jul 20252812 PMAQI
17th Jul 2025281 PMAQI
17th Jul 2025282 PMAQI
17th Jul 2025323 PMAQI
17th Jul 2025334 PMAQI
17th Jul 2025355 PMAQI
17th Jul 2025326 PMAQI
17th Jul 2025307 PMAQI
17th Jul 2025308 PMAQI
17th Jul 2025299 PMAQI
17th Jul 20252910 PMAQI
17th Jul 20252911 PMAQI
18th Jul 20252812 AMAQI
18th Jul 2025281 AMAQI
18th Jul 2025292 AMAQI
18th Jul 2025283 AMAQI
18th Jul 2025184 AMAQI
18th Jul 2025225 AMAQI
24°C13/36°C
18th Jul 2025236 AMAQI
18th Jul 2025227 AMAQI
18th Jul 2025218 AMAQI
18th Jul 2025229 AMAQI
18th Jul 20252210 AMAQI
18th Jul 20252111 AMAQI
18th Jul 20252212 PMAQI
18th Jul 2025201 PMAQI
18th Jul 2025222 PMAQI
18th Jul 2025243 PMAQI
18th Jul 2025244 PMAQI
18th Jul 2025265 PMAQI
18th Jul 2025296 PMAQI
18th Jul 2025267 PMAQI
18th Jul 2025278 PMAQI
18th Jul 2025329 PMAQI
18th Jul 20253110 PMAQI
18th Jul 20252911 PMAQI
19th Jul 20252812 AMAQI
19th Jul 2025291 AMAQI
19th Jul 2025322 AMAQI
19th Jul 2025293 AMAQI
19th Jul 2025294 AMAQI
19th Jul 2025315 AMAQI
26°C14/38°C
19th Jul 2025296 AMAQI
19th Jul 2025277 AMAQI
19th Jul 2025248 AMAQI
19th Jul 2025269 AMAQI
19th Jul 20252610 AMAQI
19th Jul 20252711 AMAQI
19th Jul 20252412 PMAQI
19th Jul 2025251 PMAQI
19th Jul 2025272 PMAQI
19th Jul 2025283 PMAQI
19th Jul 2025284 PMAQI
19th Jul 2025305 PMAQI
19th Jul 2025326 PMAQI
19th Jul 2025337 PMAQI
19th Jul 2025328 PMAQI
19th Jul 2025349 PMAQI
19th Jul 20253110 PMAQI
19th Jul 20253011 PMAQI
20th Jul 20253012 AMAQI
20th Jul 2025321 AMAQI
20th Jul 2025322 AMAQI
20th Jul 2025263 AMAQI
20th Jul 2025184 AMAQI
20th Jul 2025165 AMAQI
27°C15/39°C
20th Jul 2025166 AMAQI
20th Jul 2025187 AMAQI
20th Jul 2025188 AMAQI
20th Jul 2025199 AMAQI
20th Jul 20251810 AMAQI
20th Jul 20252011 AMAQI
20th Jul 20252512 PMAQI
20th Jul 2025231 PMAQI
20th Jul 2025242 PMAQI
20th Jul 2025243 PMAQI
20th Jul 2025244 PMAQI
20th Jul 2025255 PMAQI
20th Jul 2025286 PMAQI
20th Jul 2025267 PMAQI
20th Jul 2025258 PMAQI
20th Jul 2025269 PMAQI
20th Jul 20252710 PMAQI
20th Jul 20252611 PMAQI
21st Jul 20252712 AMAQI
21st Jul 2025261 AMAQI
21st Jul 2025272 AMAQI
21st Jul 2025283 AMAQI
21st Jul 2025344 AMAQI
21st Jul 2025275 AMAQI
26°C15/37°C
21st Jul 2025316 AMAQI
21st Jul 2025277 AMAQI
21st Jul 2025268 AMAQI
21st Jul 2025309 AMAQI
21st Jul 20253010 AMAQI
21st Jul 20252811 AMAQI
21st Jul 20253112 PMAQI
21st Jul 2025361 PMAQI
21st Jul 2025332 PMAQI
21st Jul 2025303 PMAQI
21st Jul 2025324 PMAQI
21st Jul 2025345 PMAQI
21st Jul 2025336 PMAQI
21st Jul 2025317 PMAQI
21st Jul 2025308 PMAQI
21st Jul 2025319 PMAQI
21st Jul 20253010 PMAQI
21st Jul 20252711 PMAQI
22nd Jul 20252712 AMAQI
22nd Jul 2025271 AMAQI
22nd Jul 2025262 AMAQI
22nd Jul 2025253 AMAQI
22nd Jul 2025184 AMAQI
22nd Jul 2025175 AMAQI
22°C12/33°C
22nd Jul 2025166 AMAQI
22nd Jul 2025187 AMAQI
22nd Jul 2025188 AMAQI
22nd Jul 2025189 AMAQI
22nd Jul 20251810 AMAQI
22nd Jul 20251711 AMAQI
22nd Jul 20251612 PMAQI
22nd Jul 2025181 PMAQI
22nd Jul 2025282 PMAQI
22nd Jul 2025233 PMAQI
22nd Jul 2025224 PMAQI
22nd Jul 2025215 PMAQI
22nd Jul 2025236 PMAQI
22nd Jul 2025227 PMAQI
22nd Jul 2025228 PMAQI
22nd Jul 2025229 PMAQI
22nd Jul 20252210 PMAQI
22nd Jul 20252411 PMAQI
23rd Jul 20252412 AMAQI
23rd Jul 2025231 AMAQI
23rd Jul 2025222 AMAQI
23rd Jul 2025183 AMAQI
23rd Jul 2025164 AMAQI
23rd Jul 2025155 AMAQI
22°C13/31°C
23rd Jul 2025176 AMAQI
23rd Jul 2025157 AMAQI
23rd Jul 2025148 AMAQI
23rd Jul 2025169 AMAQI
23rd Jul 20251710 AMAQI
23rd Jul 20252211 AMAQI
23rd Jul 20253412 PMAQI
23rd Jul 2025231 PMAQI
23rd Jul 2025182 PMAQI
23rd Jul 2025203 PMAQI
23rd Jul 2025204 PMAQI
23rd Jul 2025205 PMAQI
23rd Jul 2025226 PMAQI
23rd Jul 2025217 PMAQI
23rd Jul 2025228 PMAQI
23rd Jul 2025229 PMAQI
23rd Jul 20252410 PMAQI
23rd Jul 20252211 PMAQI
24th Jul 20252212 AMAQI
24th Jul 2025221 AMAQI
24th Jul 2025182 AMAQI
24th Jul 2025173 AMAQI
24th Jul 2025144 AMAQI
24th Jul 2025145 AMAQI
23°C13/33°C
24th Jul 2025156 AMAQI
24th Jul 2025157 AMAQI
24th Jul 2025148 AMAQI
24th Jul 2025149 AMAQI
24th Jul 20251710 AMAQI
24th Jul 20254111 AMAQI
24th Jul 20256212 PMAQI
24th Jul 2025351 PMAQI
24th Jul 2025242 PMAQI
24th Jul 2025223 PMAQI
24th Jul 2025214 PMAQI
24th Jul 2025215 PMAQI
24th Jul 2025226 PMAQI
24th Jul 2025227 PMAQI
24th Jul 2025228 PMAQI
24th Jul 2025249 PMAQI
24th Jul 20252410 PMAQI
24th Jul 20252411 PMAQI
25th Jul 20252512 AMAQI
25th Jul 2025261 AMAQI
25th Jul 2025242 AMAQI
25th Jul 2025223 AMAQI
25th Jul 2025264 AMAQI
25th Jul 2025435 AMAQI
24°C13/35°C
25th Jul 2025206 AMAQI
25th Jul 2025247 AMAQI
25th Jul 2025268 AMAQI
25th Jul 2025249 AMAQI
25th Jul 20252310 AMAQI
25th Jul 20252311 AMAQI
25th Jul 20252512 PMAQI
25th Jul 2025241 PMAQI
25th Jul 2025232 PMAQI
25th Jul 2025273 PMAQI
25th Jul 2025304 PMAQI
25th Jul 2025295 PMAQI
25th Jul 2025286 PMAQI
25th Jul 2025277 PMAQI
25th Jul 2025288 PMAQI
25th Jul 2025339 PMAQI
25th Jul 20252810 PMAQI
25th Jul 20252611 PMAQI
26th Jul 20252612 AMAQI
26th Jul 2025271 AMAQI
26th Jul 2025262 AMAQI
26th Jul 2025243 AMAQI
26th Jul 2025224 AMAQI
26th Jul 2025165 AMAQI
25°C15/36°C
26th Jul 2025206 AMAQI
26th Jul 2025197 AMAQI
26th Jul 2025188 AMAQI
26th Jul 2025219 AMAQI
26th Jul 20251810 AMAQI
26th Jul 20251811 AMAQI
26th Jul 20251712 PMAQI
26th Jul 2025231 PMAQI
26th Jul 2025262 PMAQI
26th Jul 2025233 PMAQI
26th Jul 2025254 PMAQI
26th Jul 2025255 PMAQI
26th Jul 2025236 PMAQI
26th Jul 2025227 PMAQI
26th Jul 2025228 PMAQI
26th Jul 2025229 PMAQI
26th Jul 20252210 PMAQI
26th Jul 20252211 PMAQI
27th Jul 20252412 AMAQI
27th Jul 2025251 AMAQI
27th Jul 2025242 AMAQI
27th Jul 2025223 AMAQI
27th Jul 2025174 AMAQI
27th Jul 2025195 AMAQI
24°C14/34°C
27th Jul 2025186 AMAQI
27th Jul 2025187 AMAQI
27th Jul 2025188 AMAQI
27th Jul 2025179 AMAQI
27th Jul 20251610 AMAQI
27th Jul 20251611 AMAQI
27th Jul 20253312 PMAQI
27th Jul 2025281 PMAQI
27th Jul 2025182 PMAQI
27th Jul 2025203 PMAQI
27th Jul 2025194 PMAQI
27th Jul 2025205 PMAQI
27th Jul 2025206 PMAQI
27th Jul 2025227 PMAQI
27th Jul 2025228 PMAQI
27th Jul 2025229 PMAQI
27th Jul 20252310 PMAQI
27th Jul 20252211 PMAQI
28th Jul 20252212 AMAQI
28th Jul 2025241 AMAQI
28th Jul 2025222 AMAQI
28th Jul 2025223 AMAQI
28th Jul 2025234 AMAQI
28th Jul 2025245 AMAQI
24°C13/35°C
28th Jul 2025186 AMAQI
28th Jul 2025197 AMAQI
28th Jul 2025228 AMAQI
28th Jul 2025229 AMAQI
28th Jul 20252810 AMAQI
28th Jul 20254811 AMAQI
28th Jul 20254312 PMAQI
28th Jul 2025491 PMAQI
28th Jul 2025462 PMAQI
28th Jul 2025433 PMAQI
28th Jul 2025414 PMAQI
28th Jul 2025445 PMAQI
28th Jul 2025406 PMAQI
28th Jul 2025307 PMAQI
28th Jul 2025288 PMAQI
28th Jul 2025319 PMAQI
28th Jul 20253110 PMAQI
28th Jul 20252811 PMAQI
29th Jul 20252712 AMAQI
29th Jul 2025301 AMAQI
29th Jul 2025292 AMAQI
29th Jul 2025283 AMAQI
29th Jul 2025284 AMAQI
29th Jul 2025305 AMAQI
26°C16/37°C
29th Jul 2025326 AMAQI
29th Jul 2025267 AMAQI
29th Jul 2025268 AMAQI
29th Jul 2025319 AMAQI
29th Jul 20252610 AMAQI
29th Jul 20253111 AMAQI
29th Jul 20255812 PMAQI
29th Jul 2025761 PMAQI
29th Jul 2025452 PMAQI
29th Jul 2025403 PMAQI
29th Jul 2025344 PMAQI
29th Jul 2025365 PMAQI
29th Jul 2025366 PMAQI
29th Jul 2025347 PMAQI
29th Jul 2025338 PMAQI
29th Jul 2025339 PMAQI
29th Jul 20253510 PMAQI
29th Jul 20253511 PMAQI
30th Jul 20253412 AMAQI
30th Jul 2025341 AMAQI
30th Jul 2025332 AMAQI
30th Jul 2025293 AMAQI
30th Jul 2025224 AMAQI
30th Jul 2025245 AMAQI
29°C18/38°C
30th Jul 2025266 AMAQI
30th Jul 2025287 AMAQI
30th Jul 2025308 AMAQI
30th Jul 2025309 AMAQI
30th Jul 20253310 AMAQI
30th Jul 20253411 AMAQI
30th Jul 20253212 PMAQI
30th Jul 2025281 PMAQI
30th Jul 2025312 PMAQI
30th Jul 2025313 PMAQI
30th Jul 2025314 PMAQI
30th Jul 2025315 PMAQI
30th Jul 2025316 PMAQI
30th Jul 2025317 PMAQI
30th Jul 2025318 PMAQI
30th Jul 2025339 PMAQI
30th Jul 20253410 PMAQI
30th Jul 20253211 PMAQI
31st Jul 20253312 AMAQI
31st Jul 2025361 AMAQI
31st Jul 2025352 AMAQI
31st Jul 2025323 AMAQI
31st Jul 2025294 AMAQI
31st Jul 2025285 AMAQI
27°C15/38°C
31st Jul 2025326 AMAQI
31st Jul 2025347 AMAQI
31st Jul 2025318 AMAQI
31st Jul 2025329 AMAQI
31st Jul 20253610 AMAQI
31st Jul 20253211 AMAQI
31st Jul 20253212 PMAQI
31st Jul 2025341 PMAQI
31st Jul 2025392 PMAQI
31st Jul 2025403 PMAQI
31st Jul 2025424 PMAQI
31st Jul 2025425 PMAQI
31st Jul 2025456 PMAQI
31st Jul 2025377 PMAQI
31st Jul 2025348 PMAQI
31st Jul 2025369 PMAQI
31st Jul 20253810 PMAQI
31st Jul 20254211 PMAQI
1st Aug 20254912 AMAQI
1st Aug 2025531 AMAQI
1st Aug 2025502 AMAQI
1st Aug 2025483 AMAQI
1st Aug 2025444 AMAQI
1st Aug 2025365 AMAQI
27°C15/39°C
1st Aug 2025336 AMAQI
1st Aug 2025307 AMAQI
1st Aug 2025338 AMAQI
1st Aug 2025349 AMAQI
1st Aug 20253610 AMAQI
1st Aug 20253911 AMAQI
1st Aug 20253312 PMAQI
1st Aug 2025311 PMAQI
1st Aug 2025342 PMAQI
1st Aug 2025363 PMAQI
1st Aug 2025404 PMAQI
1st Aug 2025425 PMAQI
1st Aug 2025426 PMAQI
1st Aug 2025397 PMAQI
1st Aug 2025388 PMAQI
1st Aug 2025379 PMAQI
1st Aug 20253710 PMAQI
1st Aug 20254311 PMAQI
2nd Aug 20254412 AMAQI
2nd Aug 2025451 AMAQI
2nd Aug 2025422 AMAQI
2nd Aug 2025393 AMAQI
2nd Aug 2025494 AMAQI
2nd Aug 2025505 AMAQI
28°C19/39°C
2nd Aug 2025436 AMAQI
2nd Aug 2025387 AMAQI
2nd Aug 2025358 AMAQI
2nd Aug 2025339 AMAQI
2nd Aug 20253010 AMAQI
2nd Aug 20252811 AMAQI
2nd Aug 20252812 PMAQI
2nd Aug 2025301 PMAQI
2nd Aug 2025322 PMAQI
2nd Aug 2025323 PMAQI
2nd Aug 2025314 PMAQI
2nd Aug 2025325 PMAQI
2nd Aug 2025326 PMAQI
2nd Aug 2025347 PMAQI
2nd Aug 2025368 PMAQI
2nd Aug 2025349 PMAQI
2nd Aug 20253310 PMAQI
2nd Aug 20253011 PMAQI
3rd Aug 20253612 AMAQI
3rd Aug 2025381 AMAQI
3rd Aug 2025402 AMAQI
3rd Aug 2025373 AMAQI
3rd Aug 2025394 AMAQI
3rd Aug 2025385 AMAQI
28°C17/39°C
3rd Aug 2025326 AMAQI
3rd Aug 2025307 AMAQI
3rd Aug 2025328 AMAQI
3rd Aug 2025309 AMAQI
3rd Aug 20253010 AMAQI
3rd Aug 20253111 AMAQI
3rd Aug 20253112 PMAQI
3rd Aug 2025341 PMAQI
3rd Aug 2025382 PMAQI
3rd Aug 2025443 PMAQI
3rd Aug 2025444 PMAQI
3rd Aug 2025385 PMAQI
3rd Aug 2025346 PMAQI
3rd Aug 2025337 PMAQI
3rd Aug 2025338 PMAQI
3rd Aug 2025319 PMAQI
3rd Aug 20253010 PMAQI
3rd Aug 20253611 PMAQI
4th Aug 20254112 AMAQI
4th Aug 2025361 AMAQI
4th Aug 2025332 AMAQI
4th Aug 2025403 AMAQI
4th Aug 2025404 AMAQI
4th Aug 2025425 AMAQI
28°C18/37°C
4th Aug 2025396 AMAQI
4th Aug 2025377 AMAQI
4th Aug 2025358 AMAQI
4th Aug 2025409 AMAQI
4th Aug 20253910 AMAQI
4th Aug 20253811 AMAQI
4th Aug 20254012 PMAQI
4th Aug 2025741 PMAQI
4th Aug 2025752 PMAQI
4th Aug 2025463 PMAQI
4th Aug 2025544 PMAQI
4th Aug 2025585 PMAQI
4th Aug 2025406 PMAQI
4th Aug 2025427 PMAQI
4th Aug 2025358 PMAQI
4th Aug 2025309 PMAQI
4th Aug 20252810 PMAQI
4th Aug 20252811 PMAQI
5th Aug 20253512 AMAQI
5th Aug 2025361 AMAQI
5th Aug 2025382 AMAQI
5th Aug 2025383 AMAQI
5th Aug 2025384 AMAQI
5th Aug 2025365 AMAQI
26°C16/35°C
5th Aug 2025346 AMAQI
5th Aug 2025367 AMAQI
5th Aug 2025338 AMAQI
5th Aug 2025359 AMAQI
5th Aug 20254010 AMAQI
5th Aug 20253711 AMAQI
5th Aug 20253712 PMAQI
5th Aug 2025341 PMAQI
5th Aug 2025352 PMAQI
5th Aug 2025373 PMAQI
5th Aug 2025384 PMAQI
5th Aug 2025485 PMAQI
5th Aug 2025546 PMAQI
5th Aug 2025387 PMAQI
5th Aug 2025378 PMAQI
5th Aug 2025359 PMAQI
5th Aug 20253710 PMAQI
5th Aug 20254011 PMAQI
6th Aug 20253812 AMAQI
6th Aug 2025371 AMAQI
6th Aug 2025402 AMAQI
6th Aug 2025383 AMAQI
6th Aug 2025404 AMAQI
6th Aug 2025365 AMAQI
25°C15/36°C
6th Aug 2025376 AMAQI
6th Aug 2025347 AMAQI
6th Aug 2025328 AMAQI
6th Aug 2025319 AMAQI
6th Aug 20253110 AMAQI
6th Aug 20253311 AMAQI
6th Aug 20254212 PMAQI
6th Aug 2025431 PMAQI
6th Aug 2025462 PMAQI
6th Aug 2025413 PMAQI
6th Aug 2025394 PMAQI
6th Aug 2025425 PMAQI
6th Aug 2025426 PMAQI
6th Aug 2025367 PMAQI
6th Aug 2025348 PMAQI
6th Aug 2025299 PMAQI
6th Aug 20252810 PMAQI
6th Aug 20253611 PMAQI
7th Aug 20253812 AMAQI
7th Aug 2025361 AMAQI
7th Aug 2025362 AMAQI
7th Aug 2025343 AMAQI
7th Aug 2025324 AMAQI
7th Aug 2025345 AMAQI
27°C17/38°C
7th Aug 2025336 AMAQI
7th Aug 2025427 AMAQI
7th Aug 2025358 AMAQI
7th Aug 2025469 AMAQI
7th Aug 20254210 AMAQI
7th Aug 20255011 AMAQI
7th Aug 20254012 PMAQI
7th Aug 2025361 PMAQI
7th Aug 2025402 PMAQI
7th Aug 2025423 PMAQI
7th Aug 2025374 PMAQI
7th Aug 2025425 PMAQI
7th Aug 2025406 PMAQI
7th Aug 2025397 PMAQI
7th Aug 2025368 PMAQI
7th Aug 2025349 PMAQI
7th Aug 20253510 PMAQI
7th Aug 20254011 PMAQI
8th Aug 20254012 AMAQI
8th Aug 2025421 AMAQI
8th Aug 2025432 AMAQI
8th Aug 2025443 AMAQI
8th Aug 2025384 AMAQI
8th Aug 2025375 AMAQI
29°C21/38°C
8th Aug 2025326 AMAQI
8th Aug 2025367 AMAQI
8th Aug 2025348 AMAQI
8th Aug 2025329 AMAQI
8th Aug 20255310 AMAQI
8th Aug 20255111 AMAQI
8th Aug 20255112 PMAQI
8th Aug 2025421 PMAQI
8th Aug 2025322 PMAQI
8th Aug 2025343 PMAQI
8th Aug 2025354 PMAQI
8th Aug 2025365 PMAQI
8th Aug 2025376 PMAQI
8th Aug 2025387 PMAQI
8th Aug 2025388 PMAQI
8th Aug 2025369 PMAQI
8th Aug 20253310 PMAQI
8th Aug 20253511 PMAQI
9th Aug 20254312 AMAQI
9th Aug 2025401 AMAQI
9th Aug 2025442 AMAQI
9th Aug 2025433 AMAQI
9th Aug 2025384 AMAQI
9th Aug 2025345 AMAQI
31°C21/41°C
9th Aug 2025326 AMAQI
9th Aug 2025327 AMAQI
9th Aug 2025318 AMAQI
9th Aug 2025329 AMAQI
9th Aug 20253010 AMAQI
9th Aug 20253611 AMAQI
9th Aug 20254712 PMAQI
9th Aug 2025451 PMAQI
9th Aug 2025432 PMAQI
9th Aug 2025373 PMAQI
9th Aug 2025374 PMAQI
9th Aug 2025385 PMAQI
9th Aug 2025376 PMAQI
9th Aug 2025397 PMAQI
9th Aug 2025378 PMAQI
9th Aug 2025359 PMAQI
9th Aug 20253510 PMAQI
9th Aug 20253611 PMAQI
10th Aug 20253812 AMAQI
10th Aug 2025371 AMAQI
10th Aug 2025402 AMAQI
10th Aug 2025393 AMAQI
10th Aug 2025404 AMAQI
10th Aug 2025335 AMAQI
33°C23/43°C
10th Aug 2025396 AMAQI
10th Aug 2025427 AMAQI
10th Aug 2025368 AMAQI
10th Aug 2025309 AMAQI
10th Aug 20253410 AMAQI
10th Aug 20253411 AMAQI
10th Aug 20253412 PMAQI
10th Aug 2025331 PMAQI
10th Aug 2025362 PMAQI
10th Aug 2025383 PMAQI
10th Aug 2025384 PMAQI
10th Aug 2025385 PMAQI
10th Aug 2025396 PMAQI
10th Aug 2025387 PMAQI
10th Aug 2025388 PMAQI
10th Aug 2025369 PMAQI
10th Aug 20253410 PMAQI
10th Aug 20253311 PMAQI
11th Aug 20253512 AMAQI
11th Aug 2025421 AMAQI
11th Aug 2025412 AMAQI
11th Aug 2025413 AMAQI
11th Aug 2025434 AMAQI
11th Aug 2025505 AMAQI
32°C22/43°C
11th Aug 2025466 AMAQI
11th Aug 2025447 AMAQI
11th Aug 2025428 AMAQI
11th Aug 2025409 AMAQI
11th Aug 20253810 AMAQI
11th Aug 20253311 AMAQI
11th Aug 20253412 PMAQI
11th Aug 2025341 PMAQI
11th Aug 2025372 PMAQI
11th Aug 2025363 PMAQI
11th Aug 2025344 PMAQI
11th Aug 2025385 PMAQI
11th Aug 2025416 PMAQI
11th Aug 2025407 PMAQI
11th Aug 2025418 PMAQI
11th Aug 2025489 PMAQI
11th Aug 20254410 PMAQI
11th Aug 20254711 PMAQI
12th Aug 20254512 AMAQI
12th Aug 2025501 AMAQI
12th Aug 2025472 AMAQI
12th Aug 2025443 AMAQI
12th Aug 2025374 AMAQI
12th Aug 2025325 AMAQI
32°C20/44°C
12th Aug 2025296 AMAQI
6 AM12th Aug 2025307 AMAQI
12th Aug 2025388 AMAQI
12th Aug 2025379 AMAQI
12th Aug 20252910 AMAQI
12th Aug 20252811 AMAQI
12th Aug 20252812 PMAQI
12th Aug 2025311 PMAQI
1 PM12th Aug 2025362 PMAQI
12th Aug 2025383 PMAQI
12th Aug 2025464 PMAQI
12th Aug 2025495 PMAQI
8 PM
1 AM
5 AM
--°C/°C
Day time
Avg. Highest Time
5 PM - 8 PM
35AQI
4 hours / Day
120 hours / Month
Avg. Lowest Time
6 AM - 10 AM
29AQI
5 hours / Day
150 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 5 PM to 8 PM (Avg. 35), while the lowest AQI was between 6 AM to 10 AM (Avg. 29).
Night time
Avg. Highest Time
12 AM - 4 AM
35AQI
5 hours / Day
150 hours / Month
Avg. Lowest Time
5 AM
31AQI
1 hours / Day
30 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 12 AM to 4 AM (Avg. 35), while the lowest AQI was between 5 AM to 5 AM (Avg. 31).
2025 Days Vs Air Quality
Willows Colusa, Willows, California, United States
2025
97%
216
3%
7
Total number of days with different AQI categories in last 224 days in 2025 (141 days remaining)
Good
216 DaysModerate
7 DaysPoor
0 DaysUnhealthy
0 DaysSevere
0 DaysHazardous
0 DaysUnder WHO’s Safe Air Quality Limits: 97%
Health Risk Level:
Very Low
In 2025, 97% of 224 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
Willows Colusa, Willows, California, United States
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
50AQI
50AQI
2nd January 2025
31AQI
31AQI
3rd January 2025
39AQI
39AQI
4th January 2025
24AQI
24AQI
5th January 2025
27AQI
27AQI
6th January 2025
27AQI
27AQI
7th January 2025
27AQI
27AQI
8th January 2025
26AQI
26AQI
9th January 2025
29AQI
29AQI
10th January 2025
42AQI
42AQI
11th January 2025
31AQI
31AQI
12th January 2025
24AQI
24AQI
13th January 2025
26AQI
26AQI
14th January 2025
26AQI
26AQI
15th January 2025
49AQI
49AQI
16th January 2025
43AQI
43AQI
17th January 2025
43AQI
43AQI
18th January 2025
43AQI
43AQI
19th January 2025
48AQI
48AQI
20th January 2025
34AQI
34AQI
21st January 2025
36AQI
36AQI
22nd January 2025
34AQI
34AQI
23rd January 2025
38AQI
38AQI
24th January 2025
49AQI
49AQI
25th January 2025
40AQI
40AQI
26th January 2025
31AQI
31AQI
27th January 2025
29AQI
29AQI
28th January 2025
52AQI
52AQI
29th January 2025
60AQI
60AQI
30th January 2025
67AQI
67AQI
31st January 2025
56AQI
56AQI
1st February 2025
43AQI
43AQI
2nd February 2025
24AQI
24AQI
3rd February 2025
23AQI
23AQI
4th February 2025
22AQI
22AQI
5th February 2025
29AQI
29AQI
6th February 2025
28AQI
28AQI
7th February 2025
25AQI
25AQI
8th February 2025
23AQI
23AQI
9th February 2025
28AQI
28AQI
10th February 2025
28AQI
28AQI
11th February 2025
30AQI
30AQI
12th February 2025
34AQI
34AQI
13th February 2025
29AQI
29AQI
14th February 2025
28AQI
28AQI
15th February 2025
28AQI
28AQI
16th February 2025
30AQI
30AQI
17th February 2025
28AQI
28AQI
18th February 2025
27AQI
27AQI
19th February 2025
28AQI
28AQI
20th February 2025
26AQI
26AQI
21st February 2025
25AQI
25AQI
22nd February 2025
34AQI
34AQI
23rd February 2025
31AQI
31AQI
24th February 2025
29AQI
29AQI
25th February 2025
24AQI
24AQI
26th February 2025
25AQI
25AQI
27th February 2025
27AQI
27AQI
28th February 2025
28AQI
28AQI
1st March 2025
31AQI
31AQI
2nd March 2025
25AQI
25AQI
3rd March 2025
23AQI
23AQI
4th March 2025
24AQI
24AQI
5th March 2025
24AQI
24AQI
6th March 2025
24AQI
24AQI
7th March 2025
28AQI
28AQI
8th March 2025
28AQI
28AQI
9th March 2025
33AQI
33AQI
10th March 2025
31AQI
31AQI
11th March 2025
29AQI
29AQI
12th March 2025
26AQI
26AQI
13th March 2025
20AQI
20AQI
14th March 2025
18AQI
18AQI
15th March 2025
32AQI
32AQI
16th March 2025
34AQI
34AQI
17th March 2025
17AQI
17AQI
18th March 2025
21AQI
21AQI
19th March 2025
22AQI
22AQI
20th March 2025
16AQI
16AQI
21st March 2025
19AQI
19AQI
22nd March 2025
19AQI
19AQI
23rd March 2025
19AQI
19AQI
24th March 2025
24AQI
24AQI
25th March 2025
30AQI
30AQI
26th March 2025
31AQI
31AQI
27th March 2025
18AQI
18AQI
28th March 2025
21AQI
21AQI
29th March 2025
17AQI
17AQI
30th March 2025
30AQI
30AQI
31st March 2025
24AQI
24AQI
1st April 2025
19AQI
19AQI
2nd April 2025
18AQI
18AQI
3rd April 2025
19AQI
19AQI
4th April 2025
23AQI
23AQI
5th April 2025
22AQI
22AQI
6th April 2025
26AQI
26AQI
7th April 2025
15AQI
15AQI
8th April 2025
18AQI
18AQI
9th April 2025
20AQI
20AQI
10th April 2025
21AQI
21AQI
11th April 2025
34AQI
34AQI
12th April 2025
22AQI
22AQI
13th April 2025
25AQI
25AQI
14th April 2025
22AQI
22AQI
15th April 2025
33AQI
33AQI
16th April 2025
39AQI
39AQI
17th April 2025
26AQI
26AQI
18th April 2025
28AQI
28AQI
19th April 2025
34AQI
34AQI
20th April 2025
36AQI
36AQI
21st April 2025
25AQI
25AQI
22nd April 2025
30AQI
30AQI
23rd April 2025
42AQI
42AQI
24th April 2025
49AQI
49AQI
25th April 2025
36AQI
36AQI
26th April 2025
31AQI
31AQI
27th April 2025
22AQI
22AQI
28th April 2025
19AQI
19AQI
29th April 2025
25AQI
25AQI
30th April 2025
27AQI
27AQI
1st May 2025
25AQI
25AQI
2nd May 2025
38AQI
38AQI
3rd May 2025
25AQI
25AQI
4th May 2025
25AQI
25AQI
5th May 2025
23AQI
23AQI
6th May 2025
27AQI
27AQI
7th May 2025
47AQI
47AQI
8th May 2025
48AQI
48AQI
9th May 2025
45AQI
45AQI
10th May 2025
36AQI
36AQI
11th May 2025
36AQI
36AQI
12th May 2025
19AQI
19AQI
13th May 2025
17AQI
17AQI
14th May 2025
20AQI
20AQI
15th May 2025
23AQI
23AQI
16th May 2025
23AQI
23AQI
17th May 2025
26AQI
26AQI
18th May 2025
24AQI
24AQI
19th May 2025
21AQI
21AQI
20th May 2025
19AQI
19AQI
21st May 2025
25AQI
25AQI
22nd May 2025
24AQI
24AQI
23rd May 2025
20AQI
20AQI
24th May 2025
31AQI
31AQI
25th May 2025
29AQI
29AQI
26th May 2025
21AQI
21AQI
27th May 2025
27AQI
27AQI
28th May 2025
34AQI
34AQI
29th May 2025
33AQI
33AQI
30th May 2025
38AQI
38AQI
31st May 2025
40AQI
40AQI
1st June 2025
38AQI
38AQI
2nd June 2025
46AQI
46AQI
3rd June 2025
43AQI
43AQI
4th June 2025
37AQI
37AQI
5th June 2025
39AQI
39AQI
6th June 2025
38AQI
38AQI
7th June 2025
36AQI
36AQI
8th June 2025
30AQI
30AQI
9th June 2025
32AQI
32AQI
10th June 2025
33AQI
33AQI
11th June 2025
44AQI
44AQI
12th June 2025
49AQI
49AQI
13th June 2025
49AQI
49AQI
14th June 2025
43AQI
43AQI
15th June 2025
40AQI
40AQI
16th June 2025
39AQI
39AQI
17th June 2025
36AQI
36AQI
18th June 2025
35AQI
35AQI
19th June 2025
33AQI
33AQI
20th June 2025
40AQI
40AQI
21st June 2025
28AQI
28AQI
22nd June 2025
24AQI
24AQI
23rd June 2025
25AQI
25AQI
24th June 2025
26AQI
26AQI
25th June 2025
32AQI
32AQI
26th June 2025
30AQI
30AQI
27th June 2025
37AQI
37AQI
28th June 2025
31AQI
31AQI
29th June 2025
36AQI
36AQI
30th June 2025
33AQI
33AQI
1st July 2025
35AQI
35AQI
2nd July 2025
39AQI
39AQI
3rd July 2025
40AQI
40AQI
4th July 2025
32AQI
32AQI
5th July 2025
48AQI
48AQI
6th July 2025
33AQI
33AQI
7th July 2025
27AQI
27AQI
8th July 2025
27AQI
27AQI
9th July 2025
22AQI
22AQI
10th July 2025
38AQI
38AQI
11th July 2025
61AQI
61AQI
12th July 2025
61AQI
61AQI
13th July 2025
53AQI
53AQI
14th July 2025
45AQI
45AQI
15th July 2025
40AQI
40AQI
16th July 2025
32AQI
32AQI
17th July 2025
29AQI
29AQI
18th July 2025
25AQI
25AQI
19th July 2025
29AQI
29AQI
20th July 2025
24AQI
24AQI
21st July 2025
30AQI
30AQI
22nd July 2025
21AQI
21AQI
23rd July 2025
20AQI
20AQI
24th July 2025
23AQI
23AQI
25th July 2025
27AQI
27AQI
26th July 2025
22AQI
22AQI
27th July 2025
21AQI
21AQI
28th July 2025
31AQI
31AQI
29th July 2025
35AQI
35AQI
30th July 2025
30AQI
30AQI
31st July 2025
35AQI
35AQI
1st August 2025
40AQI
40AQI
2nd August 2025
37AQI
37AQI
3rd August 2025
35AQI
35AQI
4th August 2025
41AQI
41AQI
5th August 2025
38AQI
38AQI
6th August 2025
37AQI
37AQI
7th August 2025
38AQI
38AQI
8th August 2025
39AQI
39AQI
9th August 2025
38AQI
38AQI
10th August 2025
37AQI
37AQI
11th August 2025
41AQI
41AQI
38AQI
28AQI
24AQI
27AQI
29AQI
36AQI
33AQI
38AQI
No. of days
Jan.Feb.Mar.Apr.MayJun.Jul.Aug.Sep.Oct.Nov.Dec.Total Days
202531AQI
27
4
28
31
30
31
30
28
3
11
216
7
Highest AQI recorded in
August38AQI
Lowest AQI recorded in
March24AQI
202433AQI
31
29
31
30
30
1
27
2
30
1
29
2
26
4
22
9
27
3
22
9
334
31
Highest AQI recorded in
October41AQI
Lowest AQI recorded in
January25AQI
202353AQI
23
2
1
5
25
3
31
27
1
31
23
1
6
25
6
26
5
26
4
21
3
7
25
4
30
1
313
29
2
5
13
Highest AQI recorded in
October129AQI
Lowest AQI recorded in
March29AQI
202232AQI
30
22
30
1
24
1
27
30
20
1
24
3
2
24
7
23
1
26
5
281
18
2
Highest AQI recorded in
September41AQI
Lowest AQI recorded in
January27AQI
202141AQI
24
6
27
1
30
1
27
3
31
30
25
6
9
8
7
4
13
14
3
28
3
10
27
4
281
46
10
4
Highest AQI recorded in
August87AQI
Lowest AQI recorded in
November20AQI
202056AQI
13
17
3
16
1
29
1
26
3
16
6
5
4
2
13
5
9
1
11
15
2
3
19
11
22
9
171
62
12
16
1
Highest AQI recorded in
September116AQI
Lowest AQI recorded in
March29AQI
Most & Least Polluted Years Over the Last 6 Years
Most Polluted Year Recorded
2020(Avg.)
56AQILeast Polluted Year Recorded
2025(Avg.)
31AQIWillows Colusa's annual 2025 AQI (31) shows an average percentage change of -23.3% (improved AQI) compared to previous years: 2020 (56), 2021 (41), 2022 (32), 2023 (53), 2024 (33).
