Chico, 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
Chico, California, United States
2021
2022
2023
2024
2025
AQI
.
Days
AQI Trends: Highest and Lowest
Highest AQI recorded on
7th Aug 2021
173AQILowest AQI recorded on
18th Aug 2024
23AQISame Day Analysis (12th August ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 1st highest AQI at 46 of Good air quality on the same day.
Download 2024 Annual Data
World Air Quality Report
Day & Night AQI Trend: 12th Aug - 13th Aug 2025
Chico, California, United States
AQI
Day
Night
.
6 AM12th Aug 2025
8 PM
5 AM13th Aug 2025
Day time
Avg. Highest Time
6PM12th Aug
53AQI
Avg. Lowest Time
10AM12th Aug
34AQI
Night time
Avg. Highest Time
11PM12th Aug
55AQI
Avg. Lowest Time
5AM13th Aug
36AQI
In the last 24 hours,
Chico's AQI reached its highest point of 55 at 11 PM during the Night, while the lowest point, 34, was recorded at 10 AM during the Day between 12th Aug and 13th Aug 2025.
Day & Night AQI Trend : Jul - Aug 2025
Chico, California, United States
JulAug
14th - 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 - 13th13th
Day
Night
14th Jul 2025466 AMAQI
14th Jul 2025487 AMAQI
14th Jul 2025438 AMAQI
14th Jul 2025429 AMAQI
14th Jul 20254610 AMAQI
14th Jul 20254211 AMAQI
14th Jul 20254212 PMAQI
14th Jul 2025451 PMAQI
14th Jul 2025462 PMAQI
14th Jul 2025493 PMAQI
14th Jul 2025484 PMAQI
14th Jul 2025525 PMAQI
14th Jul 2025556 PMAQI
14th Jul 2025547 PMAQI
14th Jul 2025528 PMAQI
14th Jul 2025509 PMAQI
14th Jul 20254510 PMAQI
14th Jul 20254811 PMAQI
15th Jul 20254912 AMAQI
15th Jul 2025501 AMAQI
15th Jul 2025482 AMAQI
15th Jul 2025493 AMAQI
15th Jul 2025454 AMAQI
15th Jul 2025405 AMAQI
32°C22/42°C
15th Jul 2025366 AMAQI
15th Jul 2025387 AMAQI
15th Jul 2025348 AMAQI
15th Jul 2025339 AMAQI
15th Jul 20253310 AMAQI
15th Jul 20253311 AMAQI
15th Jul 20253412 PMAQI
15th Jul 2025371 PMAQI
15th Jul 2025382 PMAQI
15th Jul 2025383 PMAQI
15th Jul 2025384 PMAQI
15th Jul 2025405 PMAQI
15th Jul 2025416 PMAQI
15th Jul 2025427 PMAQI
15th Jul 2025418 PMAQI
15th Jul 2025439 PMAQI
15th Jul 20254410 PMAQI
15th Jul 20254711 PMAQI
16th Jul 20254412 AMAQI
16th Jul 2025431 AMAQI
16th Jul 2025402 AMAQI
16th Jul 2025363 AMAQI
16th Jul 2025324 AMAQI
16th Jul 2025345 AMAQI
29°C20/39°C
16th Jul 2025406 AMAQI
16th Jul 2025357 AMAQI
16th Jul 2025298 AMAQI
16th Jul 2025289 AMAQI
16th Jul 20253210 AMAQI
16th Jul 20253611 AMAQI
16th Jul 20253712 PMAQI
16th Jul 2025391 PMAQI
16th Jul 2025392 PMAQI
16th Jul 2025413 PMAQI
16th Jul 2025444 PMAQI
16th Jul 2025415 PMAQI
16th Jul 2025396 PMAQI
16th Jul 2025407 PMAQI
16th Jul 2025408 PMAQI
16th Jul 2025389 PMAQI
16th Jul 20253410 PMAQI
16th Jul 20253611 PMAQI
17th Jul 20253912 AMAQI
17th Jul 2025451 AMAQI
17th Jul 2025432 AMAQI
17th Jul 2025383 AMAQI
17th Jul 2025324 AMAQI
17th Jul 2025285 AMAQI
26°C16/37°C
17th Jul 2025286 AMAQI
17th Jul 2025277 AMAQI
17th Jul 2025268 AMAQI
17th Jul 2025269 AMAQI
17th Jul 20252610 AMAQI
17th Jul 20252411 AMAQI
17th Jul 20252312 PMAQI
17th Jul 2025261 PMAQI
17th Jul 2025302 PMAQI
17th Jul 2025323 PMAQI
17th Jul 2025364 PMAQI
17th Jul 2025345 PMAQI
17th Jul 2025356 PMAQI
17th Jul 2025337 PMAQI
17th Jul 2025328 PMAQI
17th Jul 2025309 PMAQI
17th Jul 20253010 PMAQI
17th Jul 20253411 PMAQI
18th Jul 20253512 AMAQI
18th Jul 2025351 AMAQI
18th Jul 2025342 AMAQI
18th Jul 2025363 AMAQI
18th Jul 2025324 AMAQI
18th Jul 2025305 AMAQI
26°C15/37°C
18th Jul 2025306 AMAQI
18th Jul 2025257 AMAQI
18th Jul 2025248 AMAQI
18th Jul 2025289 AMAQI
18th Jul 20253010 AMAQI
18th Jul 20252811 AMAQI
18th Jul 20252812 PMAQI
18th Jul 2025311 PMAQI
18th Jul 2025302 PMAQI
18th Jul 2025303 PMAQI
18th Jul 2025294 PMAQI
18th Jul 2025295 PMAQI
18th Jul 2025286 PMAQI
18th Jul 2025307 PMAQI
18th Jul 2025328 PMAQI
18th Jul 2025329 PMAQI
18th Jul 20253310 PMAQI
18th Jul 20253511 PMAQI
19th Jul 20253512 AMAQI
19th Jul 2025331 AMAQI
19th Jul 2025372 AMAQI
19th Jul 2025363 AMAQI
19th Jul 2025424 AMAQI
19th Jul 2025425 AMAQI
28°C18/38°C
19th Jul 2025376 AMAQI
19th Jul 2025337 AMAQI
19th Jul 2025318 AMAQI
19th Jul 2025329 AMAQI
19th Jul 20253510 AMAQI
19th Jul 20253211 AMAQI
19th Jul 20253112 PMAQI
19th Jul 2025351 PMAQI
19th Jul 2025342 PMAQI
19th Jul 2025383 PMAQI
19th Jul 2025384 PMAQI
19th Jul 2025375 PMAQI
19th Jul 2025376 PMAQI
19th Jul 2025367 PMAQI
19th Jul 2025338 PMAQI
19th Jul 2025299 PMAQI
19th Jul 20253110 PMAQI
19th Jul 20253411 PMAQI
20th Jul 20253312 AMAQI
20th Jul 2025341 AMAQI
20th Jul 2025352 AMAQI
20th Jul 2025303 AMAQI
20th Jul 2025244 AMAQI
20th Jul 2025315 AMAQI
29°C19/39°C
20th Jul 2025306 AMAQI
20th Jul 2025277 AMAQI
20th Jul 2025268 AMAQI
20th Jul 2025289 AMAQI
20th Jul 20253210 AMAQI
20th Jul 20253011 AMAQI
20th Jul 20252712 PMAQI
20th Jul 2025261 PMAQI
20th Jul 2025262 PMAQI
20th Jul 2025273 PMAQI
20th Jul 2025284 PMAQI
20th Jul 2025285 PMAQI
20th Jul 2025296 PMAQI
20th Jul 2025297 PMAQI
20th Jul 2025288 PMAQI
20th Jul 2025279 PMAQI
20th Jul 20253010 PMAQI
20th Jul 20252911 PMAQI
21st Jul 20252912 AMAQI
21st Jul 2025321 AMAQI
21st Jul 2025352 AMAQI
21st Jul 2025363 AMAQI
21st Jul 2025424 AMAQI
21st Jul 2025395 AMAQI
28°C19/38°C
21st Jul 2025386 AMAQI
21st Jul 2025377 AMAQI
21st Jul 2025398 AMAQI
21st Jul 2025389 AMAQI
21st Jul 20253310 AMAQI
21st Jul 20253211 AMAQI
21st Jul 20253312 PMAQI
21st Jul 2025361 PMAQI
21st Jul 2025372 PMAQI
21st Jul 2025363 PMAQI
21st Jul 2025354 PMAQI
21st Jul 2025355 PMAQI
21st Jul 2025336 PMAQI
21st Jul 2025367 PMAQI
21st Jul 2025338 PMAQI
21st Jul 2025299 PMAQI
21st Jul 20252810 PMAQI
21st Jul 20252811 PMAQI
22nd Jul 20253012 AMAQI
22nd Jul 2025281 AMAQI
22nd Jul 2025272 AMAQI
22nd Jul 2025253 AMAQI
22nd Jul 2025214 AMAQI
22nd Jul 2025185 AMAQI
23°C15/32°C
22nd Jul 2025186 AMAQI
22nd Jul 2025207 AMAQI
22nd Jul 2025198 AMAQI
22nd Jul 2025219 AMAQI
22nd Jul 20252110 AMAQI
22nd Jul 20251811 AMAQI
22nd Jul 20252012 PMAQI
22nd Jul 2025221 PMAQI
22nd Jul 2025242 PMAQI
22nd Jul 2025233 PMAQI
22nd Jul 2025244 PMAQI
22nd Jul 2025245 PMAQI
22nd Jul 2025256 PMAQI
22nd Jul 2025227 PMAQI
22nd Jul 2025228 PMAQI
22nd Jul 2025209 PMAQI
22nd Jul 20251810 PMAQI
22nd Jul 20252111 PMAQI
23rd Jul 20252412 AMAQI
23rd Jul 2025241 AMAQI
23rd Jul 2025232 AMAQI
23rd Jul 2025223 AMAQI
23rd Jul 2025224 AMAQI
23rd Jul 2025215 AMAQI
23°C14/32°C
23rd Jul 2025186 AMAQI
23rd Jul 2025187 AMAQI
23rd Jul 2025158 AMAQI
23rd Jul 2025169 AMAQI
23rd Jul 20251710 AMAQI
23rd Jul 20251911 AMAQI
23rd Jul 20251812 PMAQI
23rd Jul 2025191 PMAQI
23rd Jul 2025182 PMAQI
23rd Jul 2025183 PMAQI
23rd Jul 2025204 PMAQI
23rd Jul 2025205 PMAQI
23rd Jul 2025206 PMAQI
23rd Jul 2025207 PMAQI
23rd Jul 2025218 PMAQI
23rd Jul 2025209 PMAQI
23rd Jul 20252410 PMAQI
23rd Jul 20252611 PMAQI
24th Jul 20253012 AMAQI
24th Jul 2025301 AMAQI
24th Jul 2025282 AMAQI
24th Jul 2025233 AMAQI
24th Jul 2025174 AMAQI
24th Jul 2025205 AMAQI
23°C14/34°C
24th Jul 2025186 AMAQI
24th Jul 2025207 AMAQI
24th Jul 2025208 AMAQI
24th Jul 2025169 AMAQI
24th Jul 20251810 AMAQI
24th Jul 20252011 AMAQI
24th Jul 20252112 PMAQI
24th Jul 2025211 PMAQI
24th Jul 2025222 PMAQI
24th Jul 2025223 PMAQI
24th Jul 2025224 PMAQI
24th Jul 2025205 PMAQI
24th Jul 2025186 PMAQI
24th Jul 2025217 PMAQI
24th Jul 2025238 PMAQI
24th Jul 2025229 PMAQI
24th Jul 20252310 PMAQI
24th Jul 20252211 PMAQI
25th Jul 20252012 AMAQI
25th Jul 2025211 AMAQI
25th Jul 2025202 AMAQI
25th Jul 2025203 AMAQI
25th Jul 2025194 AMAQI
25th Jul 2025205 AMAQI
25°C15/35°C
25th Jul 2025226 AMAQI
25th Jul 2025217 AMAQI
25th Jul 2025228 AMAQI
25th Jul 2025209 AMAQI
25th Jul 20251710 AMAQI
25th Jul 20251611 AMAQI
25th Jul 20251812 PMAQI
25th Jul 2025181 PMAQI
25th Jul 2025162 PMAQI
25th Jul 2025183 PMAQI
25th Jul 2025184 PMAQI
25th Jul 2025185 PMAQI
25th Jul 2025186 PMAQI
25th Jul 2025207 PMAQI
25th Jul 2025228 PMAQI
25th Jul 2025249 PMAQI
25th Jul 20252410 PMAQI
25th Jul 20252411 PMAQI
26th Jul 20252412 AMAQI
26th Jul 2025251 AMAQI
26th Jul 2025242 AMAQI
26th Jul 2025223 AMAQI
26th Jul 2025174 AMAQI
26th Jul 2025175 AMAQI
25°C16/36°C
26th Jul 2025246 AMAQI
26th Jul 2025207 AMAQI
26th Jul 2025208 AMAQI
26th Jul 2025199 AMAQI
26th Jul 20252110 AMAQI
26th Jul 20252311 AMAQI
26th Jul 20252412 PMAQI
26th Jul 2025241 PMAQI
26th Jul 2025212 PMAQI
26th Jul 2025203 PMAQI
26th Jul 2025204 PMAQI
26th Jul 2025175 PMAQI
26th Jul 2025186 PMAQI
26th Jul 2025217 PMAQI
26th Jul 2025238 PMAQI
26th Jul 2025229 PMAQI
26th Jul 20252110 PMAQI
26th Jul 20252111 PMAQI
27th Jul 20252212 AMAQI
27th Jul 2025231 AMAQI
27th Jul 2025232 AMAQI
27th Jul 2025203 AMAQI
27th Jul 2025194 AMAQI
27th Jul 2025235 AMAQI
24°C14/34°C
27th Jul 2025196 AMAQI
27th Jul 2025187 AMAQI
27th Jul 2025178 AMAQI
27th Jul 2025189 AMAQI
27th Jul 20251710 AMAQI
27th Jul 20251811 AMAQI
27th Jul 20251512 PMAQI
27th Jul 2025161 PMAQI
27th Jul 2025162 PMAQI
27th Jul 2025183 PMAQI
27th Jul 2025174 PMAQI
27th Jul 2025185 PMAQI
27th Jul 2025196 PMAQI
27th Jul 2025207 PMAQI
27th Jul 2025188 PMAQI
27th Jul 2025209 PMAQI
27th Jul 20251910 PMAQI
27th Jul 20251911 PMAQI
28th Jul 20251812 AMAQI
28th Jul 2025181 AMAQI
28th Jul 2025192 AMAQI
28th Jul 2025233 AMAQI
28th Jul 2025294 AMAQI
28th Jul 2025265 AMAQI
25°C15/35°C
28th Jul 2025186 AMAQI
28th Jul 2025227 AMAQI
28th Jul 2025248 AMAQI
28th Jul 2025249 AMAQI
28th Jul 20252310 AMAQI
28th Jul 20252311 AMAQI
28th Jul 20252212 PMAQI
28th Jul 2025221 PMAQI
28th Jul 2025222 PMAQI
28th Jul 2025243 PMAQI
28th Jul 2025314 PMAQI
28th Jul 2025305 PMAQI
28th Jul 2025286 PMAQI
28th Jul 2025237 PMAQI
28th Jul 2025248 PMAQI
28th Jul 2025249 PMAQI
28th Jul 20252410 PMAQI
28th Jul 20252411 PMAQI
29th Jul 20252612 AMAQI
29th Jul 2025281 AMAQI
29th Jul 2025302 AMAQI
29th Jul 2025293 AMAQI
29th Jul 2025314 AMAQI
29th Jul 2025315 AMAQI
27°C18/38°C
29th Jul 2025316 AMAQI
29th Jul 2025287 AMAQI
29th Jul 2025278 AMAQI
29th Jul 2025289 AMAQI
29th Jul 20252810 AMAQI
29th Jul 20252811 AMAQI
29th Jul 20252912 PMAQI
29th Jul 2025301 PMAQI
29th Jul 2025282 PMAQI
29th Jul 2025303 PMAQI
29th Jul 2025304 PMAQI
29th Jul 2025295 PMAQI
29th Jul 2025286 PMAQI
29th Jul 2025307 PMAQI
29th Jul 2025298 PMAQI
29th Jul 2025299 PMAQI
29th Jul 20253010 PMAQI
29th Jul 20253011 PMAQI
30th Jul 20253212 AMAQI
30th Jul 2025311 AMAQI
30th Jul 2025332 AMAQI
30th Jul 2025343 AMAQI
30th Jul 2025344 AMAQI
30th Jul 2025315 AMAQI
29°C20/39°C
30th Jul 2025306 AMAQI
30th Jul 2025367 AMAQI
30th Jul 2025388 AMAQI
30th Jul 2025349 AMAQI
30th Jul 20253610 AMAQI
30th Jul 20254311 AMAQI
30th Jul 20254212 PMAQI
30th Jul 2025401 PMAQI
30th Jul 2025402 PMAQI
30th Jul 2025413 PMAQI
30th Jul 2025414 PMAQI
30th Jul 2025415 PMAQI
30th Jul 2025416 PMAQI
30th Jul 2025417 PMAQI
30th Jul 2025418 PMAQI
30th Jul 2025409 PMAQI
30th Jul 20253710 PMAQI
30th Jul 20253611 PMAQI
31st Jul 20253512 AMAQI
31st Jul 2025351 AMAQI
31st Jul 2025392 AMAQI
31st Jul 2025403 AMAQI
31st Jul 2025364 AMAQI
31st Jul 2025315 AMAQI
27°C17/38°C
31st Jul 2025346 AMAQI
31st Jul 2025397 AMAQI
31st Jul 2025408 AMAQI
31st Jul 2025369 AMAQI
31st Jul 20254310 AMAQI
31st Jul 20254011 AMAQI
31st Jul 20253712 PMAQI
31st Jul 2025401 PMAQI
31st Jul 2025442 PMAQI
31st Jul 2025433 PMAQI
31st Jul 2025404 PMAQI
31st Jul 2025375 PMAQI
31st Jul 2025396 PMAQI
31st Jul 2025417 PMAQI
31st Jul 2025408 PMAQI
31st Jul 2025409 PMAQI
31st Jul 20253810 PMAQI
31st Jul 20254011 PMAQI
1st Aug 20254312 AMAQI
1st Aug 2025501 AMAQI
1st Aug 2025522 AMAQI
1st Aug 2025493 AMAQI
1st Aug 2025484 AMAQI
1st Aug 2025405 AMAQI
28°C18/39°C
1st Aug 2025326 AMAQI
1st Aug 2025327 AMAQI
1st Aug 2025328 AMAQI
1st Aug 2025329 AMAQI
1st Aug 20253210 AMAQI
1st Aug 20253611 AMAQI
1st Aug 20253612 PMAQI
1st Aug 2025421 PMAQI
1st Aug 2025442 PMAQI
1st Aug 2025463 PMAQI
1st Aug 2025464 PMAQI
1st Aug 2025445 PMAQI
1st Aug 2025416 PMAQI
1st Aug 2025397 PMAQI
1st Aug 2025388 PMAQI
1st Aug 2025409 PMAQI
1st Aug 20254810 PMAQI
1st Aug 20255011 PMAQI
2nd Aug 20254812 AMAQI
2nd Aug 2025461 AMAQI
2nd Aug 2025522 AMAQI
2nd Aug 2025533 AMAQI
2nd Aug 2025514 AMAQI
2nd Aug 2025465 AMAQI
30°C21/40°C
2nd Aug 2025406 AMAQI
2nd Aug 2025357 AMAQI
2nd Aug 2025328 AMAQI
2nd Aug 2025349 AMAQI
2nd Aug 20253810 AMAQI
2nd Aug 20253611 AMAQI
2nd Aug 20253812 PMAQI
2nd Aug 2025361 PMAQI
2nd Aug 2025372 PMAQI
2nd Aug 2025403 PMAQI
2nd Aug 2025384 PMAQI
2nd Aug 2025385 PMAQI
2nd Aug 2025386 PMAQI
2nd Aug 2025447 PMAQI
2nd Aug 2025458 PMAQI
2nd Aug 2025449 PMAQI
2nd Aug 20254510 PMAQI
2nd Aug 20254311 PMAQI
3rd Aug 20254512 AMAQI
3rd Aug 2025441 AMAQI
3rd Aug 2025462 AMAQI
3rd Aug 2025433 AMAQI
3rd Aug 2025444 AMAQI
3rd Aug 2025445 AMAQI
29°C20/39°C
3rd Aug 2025456 AMAQI
3rd Aug 2025447 AMAQI
3rd Aug 2025478 AMAQI
3rd Aug 2025439 AMAQI
3rd Aug 20254210 AMAQI
3rd Aug 20254411 AMAQI
3rd Aug 20254112 PMAQI
3rd Aug 2025471 PMAQI
3rd Aug 2025492 PMAQI
3rd Aug 2025503 PMAQI
3rd Aug 2025494 PMAQI
3rd Aug 2025465 PMAQI
3rd Aug 2025486 PMAQI
3rd Aug 2025447 PMAQI
3rd Aug 2025448 PMAQI
3rd Aug 2025449 PMAQI
3rd Aug 20254410 PMAQI
3rd Aug 20254611 PMAQI
4th Aug 20255012 AMAQI
4th Aug 2025471 AMAQI
4th Aug 2025432 AMAQI
4th Aug 2025483 AMAQI
4th Aug 2025504 AMAQI
4th Aug 2025465 AMAQI
28°C20/38°C
4th Aug 2025476 AMAQI
4th Aug 2025497 AMAQI
4th Aug 2025518 AMAQI
4th Aug 2025469 AMAQI
4th Aug 20254910 AMAQI
4th Aug 20254911 AMAQI
4th Aug 20254612 PMAQI
4th Aug 2025511 PMAQI
4th Aug 2025472 PMAQI
4th Aug 2025463 PMAQI
4th Aug 2025464 PMAQI
4th Aug 2025465 PMAQI
4th Aug 2025466 PMAQI
4th Aug 2025507 PMAQI
4th Aug 2025498 PMAQI
4th Aug 2025429 PMAQI
4th Aug 20254610 PMAQI
4th Aug 20254311 PMAQI
5th Aug 20254612 AMAQI
5th Aug 2025461 AMAQI
5th Aug 2025462 AMAQI
5th Aug 2025463 AMAQI
5th Aug 2025434 AMAQI
5th Aug 2025475 AMAQI
26°C17/35°C
5th Aug 2025466 AMAQI
5th Aug 2025447 AMAQI
5th Aug 2025468 AMAQI
5th Aug 2025449 AMAQI
5th Aug 20254710 AMAQI
5th Aug 20254711 AMAQI
5th Aug 20254612 PMAQI
5th Aug 2025461 PMAQI
5th Aug 2025482 PMAQI
5th Aug 2025463 PMAQI
5th Aug 2025404 PMAQI
5th Aug 2025515 PMAQI
5th Aug 2025626 PMAQI
5th Aug 2025607 PMAQI
5th Aug 2025498 PMAQI
5th Aug 2025349 PMAQI
5th Aug 20253810 PMAQI
5th Aug 20255011 PMAQI
6th Aug 20255812 AMAQI
6th Aug 2025541 AMAQI
6th Aug 2025532 AMAQI
6th Aug 2025503 AMAQI
6th Aug 2025454 AMAQI
6th Aug 2025425 AMAQI
26°C18/36°C
6th Aug 2025376 AMAQI
6th Aug 2025347 AMAQI
6th Aug 2025338 AMAQI
6th Aug 2025359 AMAQI
6th Aug 20254210 AMAQI
6th Aug 20255011 AMAQI
6th Aug 20255312 PMAQI
6th Aug 2025531 PMAQI
6th Aug 2025522 PMAQI
6th Aug 2025493 PMAQI
6th Aug 2025484 PMAQI
6th Aug 2025465 PMAQI
6th Aug 2025446 PMAQI
6th Aug 2025487 PMAQI
6th Aug 2025408 PMAQI
6th Aug 2025309 PMAQI
6th Aug 20252610 PMAQI
6th Aug 20252611 PMAQI
7th Aug 20253112 AMAQI
7th Aug 2025361 AMAQI
7th Aug 2025422 AMAQI
7th Aug 2025393 AMAQI
7th Aug 2025304 AMAQI
7th Aug 2025345 AMAQI
28°C19/38°C
7th Aug 2025316 AMAQI
7th Aug 2025317 AMAQI
7th Aug 2025288 AMAQI
7th Aug 2025289 AMAQI
7th Aug 20253210 AMAQI
7th Aug 20253711 AMAQI
7th Aug 20254012 PMAQI
7th Aug 2025381 PMAQI
7th Aug 2025362 PMAQI
7th Aug 2025363 PMAQI
7th Aug 2025344 PMAQI
7th Aug 2025335 PMAQI
7th Aug 2025326 PMAQI
7th Aug 2025327 PMAQI
7th Aug 2025328 PMAQI
7th Aug 2025299 PMAQI
7th Aug 20252810 PMAQI
7th Aug 20253011 PMAQI
8th Aug 20253912 AMAQI
8th Aug 2025431 AMAQI
8th Aug 2025462 AMAQI
8th Aug 2025483 AMAQI
8th Aug 2025494 AMAQI
8th Aug 2025475 AMAQI
29°C20/40°C
8th Aug 2025366 AMAQI
8th Aug 2025307 AMAQI
8th Aug 2025288 AMAQI
8th Aug 2025319 AMAQI
8th Aug 20253710 AMAQI
8th Aug 20255011 AMAQI
8th Aug 20254912 PMAQI
8th Aug 2025511 PMAQI
8th Aug 2025462 PMAQI
8th Aug 2025423 PMAQI
8th Aug 2025384 PMAQI
8th Aug 2025405 PMAQI
8th Aug 2025426 PMAQI
8th Aug 2025467 PMAQI
8th Aug 2025448 PMAQI
8th Aug 2025429 PMAQI
8th Aug 20254010 PMAQI
8th Aug 20254611 PMAQI
9th Aug 20255012 AMAQI
9th Aug 2025501 AMAQI
9th Aug 2025502 AMAQI
9th Aug 2025503 AMAQI
9th Aug 2025424 AMAQI
9th Aug 2025345 AMAQI
31°C22/42°C
9th Aug 2025296 AMAQI
9th Aug 2025287 AMAQI
9th Aug 2025278 AMAQI
9th Aug 2025329 AMAQI
9th Aug 20253110 AMAQI
9th Aug 20253811 AMAQI
9th Aug 20255212 PMAQI
9th Aug 2025511 PMAQI
9th Aug 2025462 PMAQI
9th Aug 2025433 PMAQI
9th Aug 2025454 PMAQI
9th Aug 2025515 PMAQI
9th Aug 2025426 PMAQI
9th Aug 2025467 PMAQI
9th Aug 2025468 PMAQI
9th Aug 2025439 PMAQI
9th Aug 20255110 PMAQI
9th Aug 20254411 PMAQI
10th Aug 20254412 AMAQI
10th Aug 2025491 AMAQI
10th Aug 2025492 AMAQI
10th Aug 2025453 AMAQI
10th Aug 2025464 AMAQI
10th Aug 2025365 AMAQI
33°C24/44°C
10th Aug 2025346 AMAQI
10th Aug 2025387 AMAQI
10th Aug 2025418 AMAQI
10th Aug 2025409 AMAQI
10th Aug 20254110 AMAQI
10th Aug 20253911 AMAQI
10th Aug 20253412 PMAQI
10th Aug 2025331 PMAQI
10th Aug 2025382 PMAQI
10th Aug 2025393 PMAQI
10th Aug 2025404 PMAQI
10th Aug 2025425 PMAQI
10th Aug 2025406 PMAQI
10th Aug 2025407 PMAQI
10th Aug 2025388 PMAQI
10th Aug 2025369 PMAQI
10th Aug 20253610 PMAQI
10th Aug 20253311 PMAQI
11th Aug 20253512 AMAQI
11th Aug 2025401 AMAQI
11th Aug 2025422 AMAQI
11th Aug 2025423 AMAQI
11th Aug 2025394 AMAQI
11th Aug 2025385 AMAQI
33°C25/43°C
11th Aug 2025396 AMAQI
11th Aug 2025377 AMAQI
11th Aug 2025368 AMAQI
11th Aug 2025399 AMAQI
11th Aug 20254210 AMAQI
11th Aug 20254911 AMAQI
11th Aug 20254812 PMAQI
11th Aug 2025441 PMAQI
11th Aug 2025392 PMAQI
11th Aug 2025403 PMAQI
11th Aug 2025394 PMAQI
11th Aug 2025485 PMAQI
11th Aug 2025566 PMAQI
11th Aug 2025407 PMAQI
11th Aug 2025498 PMAQI
11th Aug 2025549 PMAQI
11th Aug 20255410 PMAQI
11th Aug 20255611 PMAQI
12th Aug 20255812 AMAQI
12th Aug 2025561 AMAQI
12th Aug 2025552 AMAQI
12th Aug 2025543 AMAQI
12th Aug 2025464 AMAQI
12th Aug 2025425 AMAQI
33°C24/44°C
12th Aug 2025396 AMAQI
12th Aug 2025407 AMAQI
12th Aug 2025398 AMAQI
12th Aug 2025349 AMAQI
12th Aug 20253410 AMAQI
12th Aug 20253511 AMAQI
12th Aug 20253612 PMAQI
12th Aug 2025381 PMAQI
12th Aug 2025402 PMAQI
12th Aug 2025383 PMAQI
12th Aug 2025454 PMAQI
12th Aug 2025505 PMAQI
12th Aug 2025536 PMAQI
12th Aug 2025507 PMAQI
12th Aug 2025488 PMAQI
12th Aug 2025509 PMAQI
12th Aug 20255410 PMAQI
12th Aug 20255511 PMAQI
13th Aug 20255512 AMAQI
13th Aug 2025551 AMAQI
13th Aug 2025542 AMAQI
13th Aug 2025523 AMAQI
13th Aug 2025434 AMAQI
13th Aug 2025365 AMAQI
30°C19/41°C
13th Aug 2025296 AMAQI
6 AM13th Aug 2025287 AMAQI
13th Aug 2025298 AMAQI
13th Aug 2025289 AMAQI
13th Aug 20252810 AMAQI
13th Aug 20252911 AMAQI
13th Aug 20253212 PMAQI
13th Aug 2025361 PMAQI
1 PM13th Aug 2025372 PMAQI
13th Aug 2025363 PMAQI
8 PM
1 AM
5 AM
--°C/°C
Day time
Avg. Highest Time
11 AM - 8 PM
36AQI
10 hours / Day
300 hours / Month
Avg. Lowest Time
6 AM - 10 AM
32AQI
5 hours / Day
150 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 11 AM to 8 PM (Avg. 36), while the lowest AQI was between 6 AM to 10 AM (Avg. 32).
Night time
Avg. Highest Time
12 AM - 3 AM
39AQI
4 hours / Day
120 hours / Month
Avg. Lowest Time
5 AM - 11 PM
35AQI
4 hours / Day
120 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 12 AM to 3 AM (Avg. 39), while the lowest AQI was between 5 AM to 11 PM (Avg. 35).
2025 Days Vs Air Quality
Chico, California, United States
2025
94%
211
6%
13
Total number of days with different AQI categories in last 225 days in 2025 (140 days remaining)
Good
211 DaysModerate
13 DaysPoor
0 DaysUnhealthy
0 DaysSevere
0 DaysHazardous
0 DaysUnder WHO’s Safe Air Quality Limits: 94%
Health Risk Level:
Very Low
In 2025, 94% of 225 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
Chico, 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
67AQI
67AQI
2nd January 2025
37AQI
37AQI
3rd January 2025
38AQI
38AQI
4th January 2025
25AQI
25AQI
5th January 2025
34AQI
34AQI
6th January 2025
33AQI
33AQI
7th January 2025
25AQI
25AQI
8th January 2025
36AQI
36AQI
9th January 2025
29AQI
29AQI
10th January 2025
35AQI
35AQI
11th January 2025
30AQI
30AQI
12th January 2025
27AQI
27AQI
13th January 2025
28AQI
28AQI
14th January 2025
29AQI
29AQI
15th January 2025
40AQI
40AQI
16th January 2025
41AQI
41AQI
17th January 2025
44AQI
44AQI
18th January 2025
46AQI
46AQI
19th January 2025
49AQI
49AQI
20th January 2025
42AQI
42AQI
21st January 2025
47AQI
47AQI
22nd January 2025
46AQI
46AQI
23rd January 2025
54AQI
54AQI
24th January 2025
65AQI
65AQI
25th January 2025
49AQI
49AQI
26th January 2025
48AQI
48AQI
27th January 2025
45AQI
45AQI
28th January 2025
65AQI
65AQI
29th January 2025
73AQI
73AQI
30th January 2025
80AQI
80AQI
31st January 2025
62AQI
62AQI
1st February 2025
42AQI
42AQI
2nd February 2025
26AQI
26AQI
3rd February 2025
24AQI
24AQI
4th February 2025
26AQI
26AQI
5th February 2025
33AQI
33AQI
6th February 2025
47AQI
47AQI
7th February 2025
37AQI
37AQI
8th February 2025
28AQI
28AQI
9th February 2025
29AQI
29AQI
10th February 2025
32AQI
32AQI
11th February 2025
52AQI
52AQI
12th February 2025
48AQI
48AQI
13th February 2025
36AQI
36AQI
14th February 2025
25AQI
25AQI
15th February 2025
33AQI
33AQI
16th February 2025
41AQI
41AQI
17th February 2025
37AQI
37AQI
18th February 2025
41AQI
41AQI
19th February 2025
37AQI
37AQI
20th February 2025
30AQI
30AQI
21st February 2025
33AQI
33AQI
22nd February 2025
46AQI
46AQI
23rd February 2025
36AQI
36AQI
24th February 2025
43AQI
43AQI
25th February 2025
29AQI
29AQI
26th February 2025
25AQI
25AQI
27th February 2025
25AQI
25AQI
28th February 2025
26AQI
26AQI
1st March 2025
27AQI
27AQI
2nd March 2025
26AQI
26AQI
3rd March 2025
22AQI
22AQI
4th March 2025
22AQI
22AQI
5th March 2025
27AQI
27AQI
6th March 2025
26AQI
26AQI
7th March 2025
34AQI
34AQI
8th March 2025
39AQI
39AQI
9th March 2025
38AQI
38AQI
10th March 2025
30AQI
30AQI
11th March 2025
35AQI
35AQI
12th March 2025
27AQI
27AQI
13th March 2025
20AQI
20AQI
14th March 2025
18AQI
18AQI
15th March 2025
33AQI
33AQI
16th March 2025
38AQI
38AQI
17th March 2025
16AQI
16AQI
18th March 2025
25AQI
25AQI
19th March 2025
26AQI
26AQI
20th March 2025
17AQI
17AQI
21st March 2025
22AQI
22AQI
22nd March 2025
26AQI
26AQI
23rd March 2025
20AQI
20AQI
24th March 2025
22AQI
22AQI
25th March 2025
28AQI
28AQI
26th March 2025
24AQI
24AQI
27th March 2025
17AQI
17AQI
28th March 2025
23AQI
23AQI
29th March 2025
19AQI
19AQI
30th March 2025
27AQI
27AQI
31st March 2025
22AQI
22AQI
1st April 2025
17AQI
17AQI
2nd April 2025
22AQI
22AQI
3rd April 2025
26AQI
26AQI
4th April 2025
27AQI
27AQI
5th April 2025
27AQI
27AQI
6th April 2025
31AQI
31AQI
7th April 2025
14AQI
14AQI
8th April 2025
17AQI
17AQI
9th April 2025
28AQI
28AQI
10th April 2025
33AQI
33AQI
11th April 2025
29AQI
29AQI
12th April 2025
22AQI
22AQI
13th April 2025
26AQI
26AQI
14th April 2025
23AQI
23AQI
15th April 2025
39AQI
39AQI
16th April 2025
39AQI
39AQI
17th April 2025
30AQI
30AQI
18th April 2025
32AQI
32AQI
19th April 2025
29AQI
29AQI
20th April 2025
39AQI
39AQI
21st April 2025
33AQI
33AQI
22nd April 2025
31AQI
31AQI
23rd April 2025
46AQI
46AQI
24th April 2025
51AQI
51AQI
25th April 2025
33AQI
33AQI
26th April 2025
35AQI
35AQI
27th April 2025
34AQI
34AQI
28th April 2025
25AQI
25AQI
29th April 2025
30AQI
30AQI
30th April 2025
34AQI
34AQI
1st May 2025
26AQI
26AQI
2nd May 2025
37AQI
37AQI
3rd May 2025
25AQI
25AQI
4th May 2025
23AQI
23AQI
5th May 2025
22AQI
22AQI
6th May 2025
24AQI
24AQI
7th May 2025
46AQI
46AQI
8th May 2025
49AQI
49AQI
9th May 2025
44AQI
44AQI
10th May 2025
34AQI
34AQI
11th May 2025
33AQI
33AQI
12th May 2025
20AQI
20AQI
13th May 2025
20AQI
20AQI
14th May 2025
20AQI
20AQI
15th May 2025
29AQI
29AQI
16th May 2025
23AQI
23AQI
17th May 2025
20AQI
20AQI
18th May 2025
19AQI
19AQI
19th May 2025
18AQI
18AQI
20th May 2025
18AQI
18AQI
21st May 2025
21AQI
21AQI
22nd May 2025
25AQI
25AQI
23rd May 2025
24AQI
24AQI
24th May 2025
33AQI
33AQI
25th May 2025
30AQI
30AQI
26th May 2025
20AQI
20AQI
27th May 2025
30AQI
30AQI
28th May 2025
34AQI
34AQI
29th May 2025
37AQI
37AQI
30th May 2025
37AQI
37AQI
31st May 2025
40AQI
40AQI
1st June 2025
37AQI
37AQI
2nd June 2025
40AQI
40AQI
3rd June 2025
45AQI
45AQI
4th June 2025
38AQI
38AQI
5th June 2025
42AQI
42AQI
6th June 2025
35AQI
35AQI
7th June 2025
42AQI
42AQI
8th June 2025
33AQI
33AQI
9th June 2025
37AQI
37AQI
10th June 2025
37AQI
37AQI
11th June 2025
43AQI
43AQI
12th June 2025
51AQI
51AQI
13th June 2025
49AQI
49AQI
14th June 2025
37AQI
37AQI
15th June 2025
35AQI
35AQI
16th June 2025
34AQI
34AQI
17th June 2025
37AQI
37AQI
18th June 2025
36AQI
36AQI
19th June 2025
33AQI
33AQI
20th June 2025
43AQI
43AQI
21st June 2025
23AQI
23AQI
22nd June 2025
18AQI
18AQI
23rd June 2025
20AQI
20AQI
24th June 2025
24AQI
24AQI
25th June 2025
31AQI
31AQI
26th June 2025
33AQI
33AQI
27th June 2025
42AQI
42AQI
28th June 2025
36AQI
36AQI
29th June 2025
39AQI
39AQI
30th June 2025
37AQI
37AQI
1st July 2025
38AQI
38AQI
2nd July 2025
36AQI
36AQI
3rd July 2025
46AQI
46AQI
4th July 2025
36AQI
36AQI
5th July 2025
50AQI
50AQI
6th July 2025
35AQI
35AQI
7th July 2025
32AQI
32AQI
8th July 2025
31AQI
31AQI
9th July 2025
26AQI
26AQI
10th July 2025
41AQI
41AQI
11th July 2025
65AQI
65AQI
12th July 2025
61AQI
61AQI
13th July 2025
52AQI
52AQI
14th July 2025
50AQI
50AQI
15th July 2025
41AQI
41AQI
16th July 2025
38AQI
38AQI
17th July 2025
32AQI
32AQI
18th July 2025
31AQI
31AQI
19th July 2025
35AQI
35AQI
20th July 2025
29AQI
29AQI
21st July 2025
34AQI
34AQI
22nd July 2025
22AQI
22AQI
23rd July 2025
21AQI
21AQI
24th July 2025
22AQI
22AQI
25th July 2025
20AQI
20AQI
26th July 2025
21AQI
21AQI
27th July 2025
19AQI
19AQI
28th July 2025
24AQI
24AQI
29th July 2025
29AQI
29AQI
30th July 2025
37AQI
37AQI
31st July 2025
38AQI
38AQI
1st August 2025
42AQI
42AQI
2nd August 2025
43AQI
43AQI
3rd August 2025
45AQI
45AQI
4th August 2025
47AQI
47AQI
5th August 2025
47AQI
47AQI
6th August 2025
44AQI
44AQI
7th August 2025
33AQI
33AQI
8th August 2025
43AQI
43AQI
9th August 2025
43AQI
43AQI
10th August 2025
40AQI
40AQI
11th August 2025
44AQI
44AQI
12th August 2025
46AQI
46AQI
44AQI
35AQI
26AQI
30AQI
28AQI
36AQI
35AQI
43AQI
No. of days
Jan.Feb.Mar.Apr.MayJun.Jul.Aug.Sep.Oct.Nov.Dec.Total Days
202534AQI
24
7
27
1
31
29
1
31
29
1
28
3
12
211
13
Highest AQI recorded in
January44AQI
Lowest AQI recorded in
March26AQI
202434AQI
28
3
28
1
31
30
28
29
31
28
3
30
28
3
24
6
22
9
337
25
Highest AQI recorded in
December42AQI
Lowest AQI recorded in
March28AQI
202340AQI
30
1
18
10
30
1
28
30
1
30
23
8
26
5
23
7
28
3
15
14
18
13
299
63
Highest AQI recorded in
November48AQI
Lowest AQI recorded in
March33AQI
202238AQI
14
16
22
31
29
1
30
28
22
2
23
5
1
27
4
22
8
19
12
269
46
1
Highest AQI recorded in
December49AQI
Lowest AQI recorded in
March30AQI
202145AQI
18
12
22
6
31
28
2
31
29
1
23
8
7
12
9
3
15
14
1
29
2
20
10
22
9
275
76
10
3
Highest AQI recorded in
August90AQI
Lowest AQI recorded in
May32AQI
202055AQI
13
20
18
30
30
1
17
3
5
6
4
9
12
3
1
1
17
9
1
3
17
13
13
17
1
179
52
19
12
1
1
Highest AQI recorded in
September117AQI
Lowest AQI recorded in
May26AQI
Most & Least Polluted Years Over the Last 6 Years
Most Polluted Year Recorded
2020(Avg.)
55AQILeast Polluted Year Recorded
2025(Avg.)
34AQIChico's annual 2025 AQI (34) shows an average percentage change of -17.7% (improved AQI) compared to previous years: 2020 (55), 2021 (45), 2022 (38), 2023 (40), 2024 (34).
