Fairfield, 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+
October Air Quality Analysis
Fairfield, California, United States
2022
2024
2025
AQI
.
Days
AQI Trends: Highest and Lowest
Highest AQI recorded on
3rd Oct 2024
62AQILowest AQI recorded on
24th Oct 2022
6AQISame Day Analysis (25th October ):
On this day, AQI across the 3 years varied significantly: 2025 ranks 2nd highest AQI at 23 of Good air quality, showing improvement over 2024 on the same day.
Download 2024 Annual Data
World Air Quality Report
Day & Night AQI Trend: 25th Oct - 26th Oct 2025
Fairfield, California, United States
AQI
Day
Night
.
7 AM25th Oct 2025
6 PM
6 AM26th Oct 2025
Day time
Avg. Highest Time
5PM25th Oct
31AQI
Avg. Lowest Time
1PM25th Oct
19AQI
Night time
Avg. Highest Time
12AM26th Oct
41AQI
Avg. Lowest Time
6AM26th Oct
30AQI
In the last 24 hours,
Fairfield's AQI reached its highest point of 41 at 12 AM during the Night, while the lowest point, 19, was recorded at 1 PM during the Day between 25th Oct and 26th Oct 2025.
Day & Night AQI Trend : Sep - Oct 2025
Fairfield, California, United States
SepOct
26th - 27th27th - 28th28th - 29th29th - 30th30th - 01st01st - 02nd02nd - 03rd03rd - 04th04th - 05th05th - 06th06th - 07th07th - 08th08th - 09th09th - 10th10th - 11th11th - 12th12th - 13th13th - 14th14th - 15th15th - 16th16th - 17th17th - 18th18th - 19th19th - 20th20th - 21st21st - 22nd22nd - 23rd23rd - 24th24th - 25th25th - 26th26th
Day
Night
26th Sep 2025217 AMAQI
26th Sep 2025218 AMAQI
26th Sep 2025249 AMAQI
26th Sep 20252810 AMAQI
26th Sep 20253011 AMAQI
26th Sep 20253412 PMAQI
26th Sep 2025371 PMAQI
26th Sep 2025382 PMAQI
26th Sep 2025423 PMAQI
26th Sep 2025424 PMAQI
26th Sep 2025425 PMAQI
26th Sep 2025416 PMAQI
26th Sep 2025397 PMAQI
26th Sep 2025378 PMAQI
26th Sep 2025389 PMAQI
26th Sep 20253810 PMAQI
26th Sep 20254111 PMAQI
27th Sep 20253912 AMAQI
27th Sep 2025391 AMAQI
27th Sep 2025362 AMAQI
27th Sep 2025373 AMAQI
27th Sep 2025364 AMAQI
27th Sep 2025375 AMAQI
27th Sep 2025376 AMAQI
22°C14/32°C
27th Sep 2025347 AMAQI
27th Sep 2025308 AMAQI
27th Sep 2025309 AMAQI
27th Sep 20253310 AMAQI
27th Sep 20253211 AMAQI
27th Sep 20253412 PMAQI
27th Sep 2025351 PMAQI
27th Sep 2025342 PMAQI
27th Sep 2025393 PMAQI
27th Sep 2025374 PMAQI
27th Sep 2025375 PMAQI
27th Sep 2025426 PMAQI
27th Sep 2025407 PMAQI
27th Sep 2025328 PMAQI
27th Sep 2025349 PMAQI
27th Sep 20253510 PMAQI
27th Sep 20253811 PMAQI
28th Sep 20253412 AMAQI
28th Sep 2025321 AMAQI
28th Sep 2025342 AMAQI
28th Sep 2025363 AMAQI
28th Sep 2025354 AMAQI
28th Sep 2025345 AMAQI
28th Sep 2025326 AMAQI
19°C15/25°C
28th Sep 2025307 AMAQI
28th Sep 2025258 AMAQI
28th Sep 2025249 AMAQI
28th Sep 20252510 AMAQI
28th Sep 20252511 AMAQI
28th Sep 20253412 PMAQI
28th Sep 2025411 PMAQI
28th Sep 2025422 PMAQI
28th Sep 2025433 PMAQI
28th Sep 2025414 PMAQI
28th Sep 2025375 PMAQI
28th Sep 2025356 PMAQI
28th Sep 2025367 PMAQI
28th Sep 2025368 PMAQI
28th Sep 2025349 PMAQI
28th Sep 20253310 PMAQI
28th Sep 20253711 PMAQI
29th Sep 20253712 AMAQI
29th Sep 2025381 AMAQI
29th Sep 2025342 AMAQI
29th Sep 2025353 AMAQI
29th Sep 2025334 AMAQI
29th Sep 2025305 AMAQI
29th Sep 2025346 AMAQI
19°C15/23°C
29th Sep 2025347 AMAQI
29th Sep 2025358 AMAQI
29th Sep 2025399 AMAQI
29th Sep 20254410 AMAQI
29th Sep 20254611 AMAQI
29th Sep 20254512 PMAQI
29th Sep 2025431 PMAQI
29th Sep 2025352 PMAQI
29th Sep 2025323 PMAQI
29th Sep 2025374 PMAQI
29th Sep 2025375 PMAQI
29th Sep 2025386 PMAQI
29th Sep 2025357 PMAQI
29th Sep 2025348 PMAQI
29th Sep 2025399 PMAQI
29th Sep 20254210 PMAQI
29th Sep 20253911 PMAQI
30th Sep 20254112 AMAQI
30th Sep 2025431 AMAQI
30th Sep 2025372 AMAQI
30th Sep 2025363 AMAQI
30th Sep 2025404 AMAQI
30th Sep 2025425 AMAQI
30th Sep 2025376 AMAQI
20°C17/26°C
30th Sep 2025367 AMAQI
30th Sep 2025338 AMAQI
30th Sep 2025329 AMAQI
30th Sep 20253810 AMAQI
30th Sep 20252711 AMAQI
30th Sep 20253012 PMAQI
30th Sep 2025251 PMAQI
30th Sep 2025352 PMAQI
30th Sep 2025293 PMAQI
30th Sep 2025344 PMAQI
30th Sep 2025315 PMAQI
30th Sep 2025286 PMAQI
30th Sep 2025267 PMAQI
30th Sep 2025288 PMAQI
30th Sep 2025289 PMAQI
30th Sep 20252910 PMAQI
30th Sep 20253511 PMAQI
1st Oct 20254312 AMAQI
1st Oct 2025411 AMAQI
1st Oct 2025392 AMAQI
1st Oct 2025373 AMAQI
1st Oct 2025364 AMAQI
1st Oct 2025335 AMAQI
1st Oct 2025366 AMAQI
20°C16/24°C
1st Oct 2025357 AMAQI
1st Oct 2025318 AMAQI
1st Oct 2025329 AMAQI
1st Oct 20253010 AMAQI
1st Oct 20252711 AMAQI
1st Oct 20253112 PMAQI
1st Oct 2025331 PMAQI
1st Oct 2025332 PMAQI
1st Oct 2025313 PMAQI
1st Oct 2025284 PMAQI
1st Oct 2025315 PMAQI
1st Oct 2025276 PMAQI
1st Oct 2025287 PMAQI
1st Oct 2025248 PMAQI
1st Oct 2025299 PMAQI
1st Oct 20254710 PMAQI
1st Oct 20254211 PMAQI
2nd Oct 20253512 AMAQI
2nd Oct 2025401 AMAQI
2nd Oct 2025402 AMAQI
2nd Oct 2025373 AMAQI
2nd Oct 2025374 AMAQI
2nd Oct 2025375 AMAQI
2nd Oct 2025366 AMAQI
20°C17/24°C
2nd Oct 2025367 AMAQI
2nd Oct 2025388 AMAQI
2nd Oct 2025429 AMAQI
2nd Oct 20254110 AMAQI
2nd Oct 20254411 AMAQI
2nd Oct 20253812 PMAQI
2nd Oct 2025381 PMAQI
2nd Oct 2025402 PMAQI
2nd Oct 2025403 PMAQI
2nd Oct 2025394 PMAQI
2nd Oct 2025485 PMAQI
2nd Oct 2025496 PMAQI
2nd Oct 2025477 PMAQI
2nd Oct 2025508 PMAQI
2nd Oct 2025529 PMAQI
2nd Oct 20254810 PMAQI
2nd Oct 20255311 PMAQI
3rd Oct 20255412 AMAQI
3rd Oct 2025531 AMAQI
3rd Oct 2025522 AMAQI
3rd Oct 2025463 AMAQI
3rd Oct 2025414 AMAQI
3rd Oct 2025355 AMAQI
3rd Oct 2025326 AMAQI
20°C16/25°C
3rd Oct 2025407 AMAQI
3rd Oct 2025398 AMAQI
3rd Oct 2025419 AMAQI
3rd Oct 20253910 AMAQI
3rd Oct 20253911 AMAQI
3rd Oct 20254612 PMAQI
3rd Oct 2025491 PMAQI
3rd Oct 2025472 PMAQI
3rd Oct 2025483 PMAQI
3rd Oct 2025464 PMAQI
3rd Oct 2025375 PMAQI
3rd Oct 2025386 PMAQI
3rd Oct 2025417 PMAQI
3rd Oct 2025488 PMAQI
3rd Oct 2025539 PMAQI
3rd Oct 20255010 PMAQI
3rd Oct 20255411 PMAQI
4th Oct 20254812 AMAQI
4th Oct 2025471 AMAQI
4th Oct 2025482 AMAQI
4th Oct 2025483 AMAQI
4th Oct 2025524 AMAQI
4th Oct 2025525 AMAQI
4th Oct 2025486 AMAQI
18°C13/23°C
4th Oct 2025437 AMAQI
4th Oct 2025418 AMAQI
4th Oct 2025449 AMAQI
4th Oct 20254210 AMAQI
4th Oct 20253911 AMAQI
4th Oct 20254712 PMAQI
4th Oct 2025471 PMAQI
4th Oct 2025522 PMAQI
4th Oct 2025483 PMAQI
4th Oct 2025474 PMAQI
4th Oct 2025515 PMAQI
4th Oct 2025456 PMAQI
4th Oct 2025477 PMAQI
4th Oct 2025478 PMAQI
4th Oct 2025479 PMAQI
4th Oct 20254510 PMAQI
4th Oct 20254811 PMAQI
5th Oct 20255012 AMAQI
5th Oct 2025441 AMAQI
5th Oct 2025432 AMAQI
5th Oct 2025433 AMAQI
5th Oct 2025454 AMAQI
5th Oct 2025425 AMAQI
5th Oct 2025406 AMAQI
19°C11/28°C
5th Oct 2025347 AMAQI
5th Oct 2025378 AMAQI
5th Oct 2025339 AMAQI
5th Oct 20253210 AMAQI
5th Oct 20254011 AMAQI
5th Oct 20254212 PMAQI
5th Oct 2025421 PMAQI
5th Oct 2025442 PMAQI
5th Oct 2025423 PMAQI
5th Oct 2025424 PMAQI
5th Oct 2025395 PMAQI
5th Oct 2025326 PMAQI
5th Oct 2025297 PMAQI
5th Oct 2025368 PMAQI
5th Oct 2025399 PMAQI
5th Oct 20253910 PMAQI
5th Oct 20254111 PMAQI
6th Oct 20254112 AMAQI
6th Oct 2025371 AMAQI
6th Oct 2025342 AMAQI
6th Oct 2025323 AMAQI
6th Oct 2025344 AMAQI
6th Oct 2025325 AMAQI
6th Oct 2025346 AMAQI
20°C12/30°C
6th Oct 2025337 AMAQI
6th Oct 2025338 AMAQI
6th Oct 2025329 AMAQI
6th Oct 20253810 AMAQI
6th Oct 20254011 AMAQI
6th Oct 20254112 PMAQI
7th Oct 2025184 AMAQI
7th Oct 2025265 AMAQI
7th Oct 2025386 AMAQI
22°C12/33°C
7th Oct 2025367 AMAQI
7th Oct 2025338 AMAQI
7th Oct 2025369 AMAQI
7th Oct 20253710 AMAQI
7th Oct 20253611 AMAQI
7th Oct 20253612 PMAQI
7th Oct 2025401 PMAQI
7th Oct 2025452 PMAQI
7th Oct 2025393 PMAQI
7th Oct 2025354 PMAQI
7th Oct 2025345 PMAQI
7th Oct 2025326 PMAQI
7th Oct 2025347 PMAQI
7th Oct 2025488 PMAQI
7th Oct 2025459 PMAQI
7th Oct 20254910 PMAQI
7th Oct 20255011 PMAQI
8th Oct 20254312 AMAQI
8th Oct 2025321 AMAQI
8th Oct 2025292 AMAQI
8th Oct 2025373 AMAQI
8th Oct 2025304 AMAQI
8th Oct 2025305 AMAQI
8th Oct 2025396 AMAQI
22°C11/35°C
8th Oct 2025377 AMAQI
8th Oct 2025368 AMAQI
8th Oct 2025459 AMAQI
8th Oct 20254910 AMAQI
8th Oct 20254411 AMAQI
8th Oct 20254012 PMAQI
8th Oct 2025391 PMAQI
8th Oct 2025442 PMAQI
8th Oct 2025463 PMAQI
8th Oct 2025404 PMAQI
8th Oct 2025315 PMAQI
8th Oct 2025376 PMAQI
8th Oct 2025377 PMAQI
8th Oct 2025458 PMAQI
8th Oct 2025439 PMAQI
8th Oct 20254410 PMAQI
8th Oct 20254311 PMAQI
9th Oct 20253912 AMAQI
9th Oct 2025381 AMAQI
9th Oct 2025402 AMAQI
9th Oct 2025393 AMAQI
9th Oct 2025384 AMAQI
9th Oct 2025365 AMAQI
9th Oct 2025346 AMAQI
18°C14/23°C
9th Oct 2025347 AMAQI
9th Oct 2025348 AMAQI
9th Oct 2025349 AMAQI
9th Oct 20253610 AMAQI
9th Oct 20253011 AMAQI
9th Oct 20254112 PMAQI
9th Oct 2025451 PMAQI
9th Oct 2025402 PMAQI
9th Oct 2025413 PMAQI
9th Oct 2025434 PMAQI
9th Oct 2025465 PMAQI
9th Oct 2025436 PMAQI
9th Oct 2025447 PMAQI
9th Oct 2025448 PMAQI
9th Oct 2025469 PMAQI
9th Oct 20254910 PMAQI
9th Oct 20254811 PMAQI
10th Oct 20254412 AMAQI
10th Oct 2025451 AMAQI
10th Oct 2025442 AMAQI
10th Oct 2025463 AMAQI
10th Oct 2025464 AMAQI
10th Oct 2025435 AMAQI
10th Oct 2025416 AMAQI
17°C13/23°C
10th Oct 2025297 AMAQI
10th Oct 2025388 AMAQI
10th Oct 2025489 AMAQI
10th Oct 20254910 AMAQI
10th Oct 20254411 AMAQI
10th Oct 20253812 PMAQI
10th Oct 2025341 PMAQI
10th Oct 2025302 PMAQI
10th Oct 2025383 PMAQI
10th Oct 2025334 PMAQI
10th Oct 2025335 PMAQI
10th Oct 2025316 PMAQI
10th Oct 2025277 PMAQI
10th Oct 2025288 PMAQI
10th Oct 2025389 PMAQI
10th Oct 20254610 PMAQI
10th Oct 20254211 PMAQI
11th Oct 20253612 AMAQI
11th Oct 2025391 AMAQI
11th Oct 2025422 AMAQI
11th Oct 2025453 AMAQI
11th Oct 2025444 AMAQI
11th Oct 2025425 AMAQI
11th Oct 2025406 AMAQI
18°C11/25°C
11th Oct 2025327 AMAQI
11th Oct 2025278 AMAQI
11th Oct 2025329 AMAQI
11th Oct 20253510 AMAQI
11th Oct 20252811 AMAQI
11th Oct 20252512 PMAQI
11th Oct 2025191 PMAQI
11th Oct 2025242 PMAQI
11th Oct 2025293 PMAQI
11th Oct 2025224 PMAQI
11th Oct 2025255 PMAQI
11th Oct 2025226 PMAQI
11th Oct 2025257 PMAQI
11th Oct 2025368 PMAQI
11th Oct 2025429 PMAQI
11th Oct 20255010 PMAQI
11th Oct 20254911 PMAQI
12th Oct 20255012 AMAQI
12th Oct 2025531 AMAQI
12th Oct 2025492 AMAQI
12th Oct 2025483 AMAQI
12th Oct 2025474 AMAQI
12th Oct 2025435 AMAQI
12th Oct 2025386 AMAQI
17°C10/24°C
12th Oct 2025427 AMAQI
12th Oct 2025448 AMAQI
12th Oct 2025399 AMAQI
12th Oct 20254310 AMAQI
12th Oct 20254311 AMAQI
12th Oct 20253612 PMAQI
12th Oct 2025271 PMAQI
12th Oct 2025322 PMAQI
12th Oct 2025373 PMAQI
12th Oct 2025344 PMAQI
12th Oct 2025305 PMAQI
12th Oct 2025346 PMAQI
12th Oct 2025327 PMAQI
12th Oct 2025438 PMAQI
12th Oct 2025429 PMAQI
12th Oct 20254710 PMAQI
12th Oct 20255211 PMAQI
13th Oct 20255212 AMAQI
13th Oct 2025501 AMAQI
13th Oct 2025492 AMAQI
13th Oct 2025483 AMAQI
13th Oct 2025514 AMAQI
13th Oct 2025465 AMAQI
13th Oct 2025466 AMAQI
18°C10/27°C
13th Oct 2025487 AMAQI
13th Oct 2025468 AMAQI
13th Oct 2025509 AMAQI
13th Oct 20256010 AMAQI
13th Oct 20255711 AMAQI
13th Oct 20255112 PMAQI
13th Oct 2025501 PMAQI
13th Oct 2025472 PMAQI
13th Oct 2025453 PMAQI
13th Oct 2025444 PMAQI
13th Oct 2025435 PMAQI
13th Oct 2025486 PMAQI
13th Oct 2025517 PMAQI
13th Oct 2025448 PMAQI
13th Oct 2025439 PMAQI
13th Oct 20255210 PMAQI
13th Oct 20255611 PMAQI
14th Oct 20255312 AMAQI
14th Oct 2025551 AMAQI
14th Oct 2025552 AMAQI
14th Oct 2025493 AMAQI
14th Oct 2025514 AMAQI
14th Oct 2025465 AMAQI
14th Oct 2025436 AMAQI
14°C11/19°C
14th Oct 2025427 AMAQI
14th Oct 2025438 AMAQI
14th Oct 2025419 AMAQI
14th Oct 20253810 AMAQI
14th Oct 20253811 AMAQI
14th Oct 20254212 PMAQI
14th Oct 2025431 PMAQI
14th Oct 2025392 PMAQI
14th Oct 2025343 PMAQI
14th Oct 2025334 PMAQI
14th Oct 2025395 PMAQI
14th Oct 2025396 PMAQI
14th Oct 2025317 PMAQI
14th Oct 2025328 PMAQI
14th Oct 2025369 PMAQI
14th Oct 20254310 PMAQI
14th Oct 20254411 PMAQI
15th Oct 20254212 AMAQI
15th Oct 2025411 AMAQI
15th Oct 2025322 AMAQI
15th Oct 2025363 AMAQI
15th Oct 2025394 AMAQI
15th Oct 2025385 AMAQI
15th Oct 2025416 AMAQI
12°C11/16°C
15th Oct 2025467 AMAQI
15th Oct 2025418 AMAQI
15th Oct 2025369 AMAQI
15th Oct 20255410 AMAQI
15th Oct 20255511 AMAQI
15th Oct 20255312 PMAQI
15th Oct 2025481 PMAQI
15th Oct 2025472 PMAQI
15th Oct 2025493 PMAQI
15th Oct 2025514 PMAQI
15th Oct 2025465 PMAQI
15th Oct 2025466 PMAQI
15th Oct 2025407 PMAQI
15th Oct 2025468 PMAQI
15th Oct 2025469 PMAQI
15th Oct 20256410 PMAQI
15th Oct 20254811 PMAQI
16th Oct 20254512 AMAQI
16th Oct 2025511 AMAQI
16th Oct 2025522 AMAQI
16th Oct 2025513 AMAQI
16th Oct 2025534 AMAQI
16th Oct 2025525 AMAQI
16th Oct 2025476 AMAQI
14°C12/17°C
16th Oct 2025467 AMAQI
16th Oct 2025508 AMAQI
16th Oct 2025469 AMAQI
16th Oct 20255010 AMAQI
16th Oct 20256411 AMAQI
16th Oct 20255712 PMAQI
16th Oct 2025441 PMAQI
16th Oct 2025382 PMAQI
16th Oct 2025473 PMAQI
16th Oct 2025364 PMAQI
16th Oct 2025385 PMAQI
16th Oct 2025426 PMAQI
16th Oct 2025447 PMAQI
16th Oct 2025478 PMAQI
16th Oct 2025489 PMAQI
16th Oct 20254610 PMAQI
16th Oct 20255511 PMAQI
17th Oct 20255312 AMAQI
17th Oct 2025581 AMAQI
17th Oct 2025592 AMAQI
17th Oct 2025483 AMAQI
17th Oct 2025474 AMAQI
17th Oct 2025425 AMAQI
17th Oct 2025396 AMAQI
14°C8/23°C
17th Oct 2025407 AMAQI
17th Oct 2025488 AMAQI
17th Oct 2025479 AMAQI
17th Oct 20255210 AMAQI
17th Oct 20255611 AMAQI
17th Oct 20255712 PMAQI
17th Oct 2025591 PMAQI
17th Oct 2025622 PMAQI
17th Oct 2025573 PMAQI
17th Oct 2025524 PMAQI
17th Oct 2025565 PMAQI
17th Oct 2025536 PMAQI
17th Oct 2025557 PMAQI
17th Oct 2025568 PMAQI
17th Oct 2025569 PMAQI
17th Oct 20255910 PMAQI
17th Oct 20255811 PMAQI
18th Oct 20256212 AMAQI
18th Oct 2025601 AMAQI
18th Oct 2025582 AMAQI
18th Oct 2025613 AMAQI
18th Oct 2025614 AMAQI
18th Oct 2025575 AMAQI
18th Oct 2025566 AMAQI
16°C8/25°C
18th Oct 2025527 AMAQI
18th Oct 2025528 AMAQI
18th Oct 2025539 AMAQI
18th Oct 20255210 AMAQI
18th Oct 20255011 AMAQI
18th Oct 20255012 PMAQI
18th Oct 2025511 PMAQI
18th Oct 2025532 PMAQI
18th Oct 2025523 PMAQI
18th Oct 2025534 PMAQI
18th Oct 2025495 PMAQI
18th Oct 2025486 PMAQI
18th Oct 2025447 PMAQI
18th Oct 2025468 PMAQI
18th Oct 2025529 PMAQI
18th Oct 20255310 PMAQI
18th Oct 20255111 PMAQI
19th Oct 20255012 AMAQI
19th Oct 2025501 AMAQI
19th Oct 2025432 AMAQI
19th Oct 2025453 AMAQI
19th Oct 2025344 AMAQI
19th Oct 2025305 AMAQI
19th Oct 2025286 AMAQI
18°C10/28°C
19th Oct 2025297 AMAQI
19th Oct 2025268 AMAQI
19th Oct 2025259 AMAQI
19th Oct 20253210 AMAQI
19th Oct 20253611 AMAQI
19th Oct 20253712 PMAQI
19th Oct 2025421 PMAQI
19th Oct 2025362 PMAQI
19th Oct 2025303 PMAQI
19th Oct 2025314 PMAQI
19th Oct 2025325 PMAQI
19th Oct 2025356 PMAQI
19th Oct 2025387 PMAQI
19th Oct 2025348 PMAQI
19th Oct 2025429 PMAQI
19th Oct 20253310 PMAQI
19th Oct 20252611 PMAQI
20th Oct 20252412 AMAQI
20th Oct 2025291 AMAQI
20th Oct 2025322 AMAQI
20th Oct 2025323 AMAQI
20th Oct 2025314 AMAQI
20th Oct 2025335 AMAQI
20th Oct 2025426 AMAQI
19°C11/28°C
20th Oct 2025407 AMAQI
20th Oct 2025338 AMAQI
20th Oct 2025289 AMAQI
20th Oct 20255010 AMAQI
20th Oct 20255511 AMAQI
20th Oct 20255312 PMAQI
20th Oct 2025421 PMAQI
20th Oct 2025242 PMAQI
20th Oct 2025213 PMAQI
20th Oct 2025204 PMAQI
20th Oct 2025355 PMAQI
20th Oct 2025276 PMAQI
20th Oct 2025247 PMAQI
20th Oct 2025278 PMAQI
20th Oct 2025369 PMAQI
20th Oct 20253510 PMAQI
20th Oct 20253311 PMAQI
21st Oct 20253112 AMAQI
21st Oct 2025371 AMAQI
21st Oct 2025452 AMAQI
21st Oct 2025473 AMAQI
21st Oct 2025484 AMAQI
21st Oct 2025495 AMAQI
21st Oct 2025426 AMAQI
20°C12/29°C
21st Oct 2025377 AMAQI
21st Oct 2025368 AMAQI
21st Oct 2025389 AMAQI
21st Oct 20253810 AMAQI
21st Oct 20253611 AMAQI
21st Oct 20253512 PMAQI
21st Oct 2025321 PMAQI
21st Oct 2025292 PMAQI
21st Oct 2025283 PMAQI
21st Oct 2025264 PMAQI
21st Oct 2025285 PMAQI
21st Oct 2025316 PMAQI
21st Oct 2025317 PMAQI
21st Oct 2025318 PMAQI
21st Oct 2025339 PMAQI
21st Oct 20253510 PMAQI
21st Oct 20253211 PMAQI
22nd Oct 20252912 AMAQI
22nd Oct 2025311 AMAQI
22nd Oct 2025342 AMAQI
22nd Oct 2025363 AMAQI
22nd Oct 2025374 AMAQI
22nd Oct 2025355 AMAQI
22nd Oct 2025326 AMAQI
18°C9/30°C
22nd Oct 2025277 AMAQI
22nd Oct 2025258 AMAQI
22nd Oct 2025269 AMAQI
22nd Oct 20252610 AMAQI
22nd Oct 20253011 AMAQI
22nd Oct 20253412 PMAQI
22nd Oct 2025251 PMAQI
22nd Oct 2025282 PMAQI
22nd Oct 2025263 PMAQI
22nd Oct 2025224 PMAQI
22nd Oct 2025265 PMAQI
22nd Oct 2025276 PMAQI
22nd Oct 2025287 PMAQI
22nd Oct 2025288 PMAQI
22nd Oct 2025249 PMAQI
22nd Oct 20252510 PMAQI
22nd Oct 20252811 PMAQI
23rd Oct 20252912 AMAQI
23rd Oct 2025301 AMAQI
23rd Oct 2025302 AMAQI
23rd Oct 2025323 AMAQI
23rd Oct 2025354 AMAQI
23rd Oct 2025365 AMAQI
23rd Oct 2025366 AMAQI
17°C13/23°C
23rd Oct 2025377 AMAQI
23rd Oct 2025458 AMAQI
23rd Oct 2025499 AMAQI
23rd Oct 20254610 AMAQI
23rd Oct 20254211 AMAQI
23rd Oct 20254312 PMAQI
23rd Oct 2025441 PMAQI
23rd Oct 2025422 PMAQI
23rd Oct 2025413 PMAQI
23rd Oct 2025364 PMAQI
23rd Oct 2025345 PMAQI
23rd Oct 2025326 PMAQI
23rd Oct 2025307 PMAQI
23rd Oct 2025308 PMAQI
23rd Oct 2025359 PMAQI
23rd Oct 20253610 PMAQI
23rd Oct 20254311 PMAQI
24th Oct 20254612 AMAQI
24th Oct 2025391 AMAQI
24th Oct 2025402 AMAQI
24th Oct 2025433 AMAQI
24th Oct 2025394 AMAQI
24th Oct 2025325 AMAQI
24th Oct 2025386 AMAQI
16°C10/24°C
24th Oct 2025407 AMAQI
24th Oct 2025358 AMAQI
24th Oct 2025309 AMAQI
24th Oct 20253310 AMAQI
24th Oct 20254211 AMAQI
24th Oct 20254212 PMAQI
24th Oct 2025321 PMAQI
24th Oct 2025302 PMAQI
24th Oct 2025323 PMAQI
24th Oct 2025274 PMAQI
24th Oct 2025265 PMAQI
24th Oct 2025246 PMAQI
24th Oct 2025227 PMAQI
24th Oct 2025248 PMAQI
24th Oct 2025299 PMAQI
24th Oct 20252910 PMAQI
24th Oct 20253311 PMAQI
25th Oct 20253212 AMAQI
25th Oct 2025351 AMAQI
25th Oct 2025292 AMAQI
25th Oct 2025333 AMAQI
25th Oct 2025354 AMAQI
25th Oct 2025335 AMAQI
25th Oct 2025316 AMAQI
16°C12/22°C
25th Oct 2025267 AMAQI
25th Oct 2025278 AMAQI
25th Oct 2025279 AMAQI
25th Oct 20252610 AMAQI
25th Oct 20252411 AMAQI
25th Oct 20252012 PMAQI
25th Oct 2025191 PMAQI
25th Oct 2025242 PMAQI
25th Oct 2025273 PMAQI
25th Oct 2025304 PMAQI
25th Oct 2025315 PMAQI
25th Oct 2025296 PMAQI
25th Oct 2025317 PMAQI
25th Oct 2025368 PMAQI
25th Oct 2025359 PMAQI
25th Oct 20253310 PMAQI
25th Oct 20253511 PMAQI
26th Oct 20254112 AMAQI
26th Oct 2025411 AMAQI
26th Oct 2025402 AMAQI
26th Oct 2025393 AMAQI
26th Oct 2025354 AMAQI
26th Oct 2025335 AMAQI
26th Oct 2025306 AMAQI
16°C13/21°C
26th Oct 2025287 AMAQI
7 AM26th Oct 2025318 AMAQI
26th Oct 2025379 AMAQI
26th Oct 20253910 AMAQI
26th Oct 20253811 AMAQI
12 PM
6 PM
12 AM
6 AM
--°C/°C
Day time
Avg. Highest Time
10 AM - 6 PM
38AQI
9 hours / Day
270 hours / Month
Avg. Lowest Time
7 AM - 9 AM
36AQI
3 hours / Day
90 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 10 AM to 6 PM (Avg. 38), while the lowest AQI was between 7 AM to 9 AM (Avg. 36).
Night time
Avg. Highest Time
10 PM - 11 PM
43AQI
2 hours / Day
60 hours / Month
Avg. Lowest Time
7 PM
36AQI
1 hours / Day
30 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 10 PM to 11 PM (Avg. 43), while the lowest AQI was between 7 PM to 7 PM (Avg. 36).
2025 Days Vs Air Quality
Fairfield, California, United States
2025
93%
277
7%
21
Total number of days with different AQI categories in last 299 days in 2025 (66 days remaining)
Good
277 DaysModerate
21 DaysPoor
0 DaysUnhealthy
0 DaysSevere
0 DaysHazardous
0 DaysUnder WHO’s Safe Air Quality Limits: 93%
Health Risk Level:
Very Low
In 2025, 93% of 299 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
Fairfield, 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.
-1th undefined 2025
-1th undefined 2025
-1th undefined 2025
1st January 2025
58AQI
58AQI
2nd January 2025
47AQI
47AQI
3rd January 2025
44AQI
44AQI
4th January 2025
31AQI
31AQI
5th January 2025
32AQI
32AQI
6th January 2025
41AQI
41AQI
7th January 2025
25AQI
25AQI
8th January 2025
26AQI
26AQI
9th January 2025
41AQI
41AQI
10th January 2025
54AQI
54AQI
11th January 2025
32AQI
32AQI
12th January 2025
26AQI
26AQI
13th January 2025
32AQI
32AQI
14th January 2025
35AQI
35AQI
15th January 2025
53AQI
53AQI
16th January 2025
55AQI
55AQI
17th January 2025
52AQI
52AQI
18th January 2025
51AQI
51AQI
19th January 2025
55AQI
55AQI
20th January 2025
35AQI
35AQI
21st January 2025
44AQI
44AQI
22nd January 2025
48AQI
48AQI
23rd January 2025
48AQI
48AQI
24th January 2025
56AQI
56AQI
25th January 2025
46AQI
46AQI
26th January 2025
44AQI
44AQI
27th January 2025
45AQI
45AQI
28th January 2025
51AQI
51AQI
29th January 2025
42AQI
42AQI
30th January 2025
46AQI
46AQI
31st January 2025
39AQI
39AQI
1st February 2025
38AQI
38AQI
2nd February 2025
22AQI
22AQI
3rd February 2025
23AQI
23AQI
4th February 2025
22AQI
22AQI
5th February 2025
25AQI
25AQI
6th February 2025
23AQI
23AQI
7th February 2025
26AQI
26AQI
8th February 2025
24AQI
24AQI
9th February 2025
30AQI
30AQI
10th February 2025
27AQI
27AQI
11th February 2025
29AQI
29AQI
12th February 2025
26AQI
26AQI
13th February 2025
30AQI
30AQI
14th February 2025
30AQI
30AQI
15th February 2025
26AQI
26AQI
16th February 2025
30AQI
30AQI
17th February 2025
24AQI
24AQI
18th February 2025
26AQI
26AQI
19th February 2025
34AQI
34AQI
20th February 2025
25AQI
25AQI
21st February 2025
29AQI
29AQI
22nd February 2025
29AQI
29AQI
23rd February 2025
22AQI
22AQI
24th February 2025
21AQI
21AQI
25th February 2025
21AQI
21AQI
26th February 2025
26AQI
26AQI
27th February 2025
34AQI
34AQI
28th February 2025
38AQI
38AQI
1st March 2025
35AQI
35AQI
2nd March 2025
27AQI
27AQI
3rd March 2025
24AQI
24AQI
4th March 2025
22AQI
22AQI
5th March 2025
25AQI
25AQI
6th March 2025
29AQI
29AQI
7th March 2025
29AQI
29AQI
8th March 2025
27AQI
27AQI
9th March 2025
34AQI
34AQI
10th March 2025
26AQI
26AQI
11th March 2025
30AQI
30AQI
12th March 2025
28AQI
28AQI
13th March 2025
20AQI
20AQI
14th March 2025
18AQI
18AQI
15th March 2025
44AQI
44AQI
16th March 2025
33AQI
33AQI
17th March 2025
16AQI
16AQI
18th March 2025
18AQI
18AQI
19th March 2025
20AQI
20AQI
20th March 2025
16AQI
16AQI
21st March 2025
20AQI
20AQI
22nd March 2025
19AQI
19AQI
23rd March 2025
22AQI
22AQI
24th March 2025
21AQI
21AQI
25th March 2025
28AQI
28AQI
26th March 2025
29AQI
29AQI
27th March 2025
22AQI
22AQI
28th March 2025
29AQI
29AQI
29th March 2025
23AQI
23AQI
30th March 2025
29AQI
29AQI
31st March 2025
30AQI
30AQI
1st April 2025
28AQI
28AQI
2nd April 2025
23AQI
23AQI
3rd April 2025
27AQI
27AQI
4th April 2025
32AQI
32AQI
5th April 2025
30AQI
30AQI
6th April 2025
27AQI
27AQI
7th April 2025
19AQI
19AQI
8th April 2025
23AQI
23AQI
9th April 2025
29AQI
29AQI
10th April 2025
27AQI
27AQI
11th April 2025
23AQI
23AQI
12th April 2025
37AQI
37AQI
13th April 2025
34AQI
34AQI
14th April 2025
34AQI
34AQI
15th April 2025
37AQI
37AQI
16th April 2025
35AQI
35AQI
17th April 2025
30AQI
30AQI
18th April 2025
32AQI
32AQI
19th April 2025
41AQI
41AQI
20th April 2025
35AQI
35AQI
21st April 2025
38AQI
38AQI
22nd April 2025
42AQI
42AQI
23rd April 2025
51AQI
51AQI
24th April 2025
43AQI
43AQI
25th April 2025
27AQI
27AQI
26th April 2025
25AQI
25AQI
27th April 2025
27AQI
27AQI
28th April 2025
32AQI
32AQI
29th April 2025
42AQI
42AQI
30th April 2025
36AQI
36AQI
1st May 2025
42AQI
42AQI
2nd May 2025
32AQI
32AQI
3rd May 2025
23AQI
23AQI
4th May 2025
30AQI
30AQI
5th May 2025
29AQI
29AQI
6th May 2025
39AQI
39AQI
7th May 2025
49AQI
49AQI
8th May 2025
36AQI
36AQI
9th May 2025
37AQI
37AQI
10th May 2025
34AQI
34AQI
11th May 2025
27AQI
27AQI
12th May 2025
23AQI
23AQI
13th May 2025
22AQI
22AQI
14th May 2025
31AQI
31AQI
15th May 2025
37AQI
37AQI
16th May 2025
44AQI
44AQI
17th May 2025
30AQI
30AQI
18th May 2025
31AQI
31AQI
19th May 2025
27AQI
27AQI
20th May 2025
23AQI
23AQI
21st May 2025
37AQI
37AQI
22nd May 2025
35AQI
35AQI
23rd May 2025
27AQI
27AQI
24th May 2025
37AQI
37AQI
25th May 2025
27AQI
27AQI
26th May 2025
20AQI
20AQI
27th May 2025
30AQI
30AQI
28th May 2025
29AQI
29AQI
29th May 2025
22AQI
22AQI
30th May 2025
30AQI
30AQI
31st May 2025
44AQI
44AQI
1st June 2025
50AQI
50AQI
2nd June 2025
52AQI
52AQI
3rd June 2025
43AQI
43AQI
4th June 2025
53AQI
53AQI
5th June 2025
39AQI
39AQI
6th June 2025
24AQI
24AQI
7th June 2025
28AQI
28AQI
8th June 2025
22AQI
22AQI
9th June 2025
20AQI
20AQI
10th June 2025
25AQI
25AQI
11th June 2025
47AQI
47AQI
12th June 2025
50AQI
50AQI
13th June 2025
50AQI
50AQI
14th June 2025
48AQI
48AQI
15th June 2025
49AQI
49AQI
16th June 2025
44AQI
44AQI
17th June 2025
37AQI
37AQI
18th June 2025
34AQI
34AQI
19th June 2025
43AQI
43AQI
20th June 2025
41AQI
41AQI
21st June 2025
37AQI
37AQI
22nd June 2025
33AQI
33AQI
23rd June 2025
35AQI
35AQI
24th June 2025
30AQI
30AQI
25th June 2025
25AQI
25AQI
26th June 2025
30AQI
30AQI
27th June 2025
35AQI
35AQI
28th June 2025
37AQI
37AQI
29th June 2025
30AQI
30AQI
30th June 2025
25AQI
25AQI
1st July 2025
26AQI
26AQI
2nd July 2025
25AQI
25AQI
3rd July 2025
39AQI
39AQI
4th July 2025
35AQI
35AQI
5th July 2025
34AQI
34AQI
6th July 2025
35AQI
35AQI
7th July 2025
25AQI
25AQI
8th July 2025
22AQI
22AQI
9th July 2025
18AQI
18AQI
10th July 2025
26AQI
26AQI
11th July 2025
38AQI
38AQI
12th July 2025
38AQI
38AQI
13th July 2025
30AQI
30AQI
14th July 2025
22AQI
22AQI
15th July 2025
21AQI
21AQI
16th July 2025
22AQI
22AQI
17th July 2025
23AQI
23AQI
18th July 2025
21AQI
21AQI
19th July 2025
22AQI
22AQI
20th July 2025
23AQI
23AQI
21st July 2025
27AQI
27AQI
22nd July 2025
16AQI
16AQI
23rd July 2025
16AQI
16AQI
24th July 2025
16AQI
16AQI
25th July 2025
16AQI
16AQI
26th July 2025
17AQI
17AQI
27th July 2025
18AQI
18AQI
28th July 2025
22AQI
22AQI
29th July 2025
28AQI
28AQI
30th July 2025
27AQI
27AQI
31st July 2025
26AQI
26AQI
1st August 2025
25AQI
25AQI
2nd August 2025
24AQI
24AQI
3rd August 2025
36AQI
36AQI
4th August 2025
36AQI
36AQI
5th August 2025
32AQI
32AQI
6th August 2025
37AQI
37AQI
7th August 2025
34AQI
34AQI
8th August 2025
40AQI
40AQI
9th August 2025
38AQI
38AQI
10th August 2025
30AQI
30AQI
11th August 2025
30AQI
30AQI
12th August 2025
28AQI
28AQI
13th August 2025
26AQI
26AQI
14th August 2025
20AQI
20AQI
15th August 2025
40AQI
40AQI
16th August 2025
18AQI
18AQI
17th August 2025
16AQI
16AQI
18th August 2025
18AQI
18AQI
19th August 2025
22AQI
22AQI
20th August 2025
29AQI
29AQI
21st August 2025
41AQI
41AQI
22nd August 2025
50AQI
50AQI
23rd August 2025
35AQI
35AQI
24th August 2025
27AQI
27AQI
25th August 2025
30AQI
30AQI
26th August 2025
38AQI
38AQI
27th August 2025
42AQI
42AQI
28th August 2025
38AQI
38AQI
29th August 2025
28AQI
28AQI
30th August 2025
33AQI
33AQI
31st August 2025
34AQI
34AQI
1st September 2025
34AQI
34AQI
2nd September 2025
42AQI
42AQI
3rd September 2025
31AQI
31AQI
4th September 2025
26AQI
26AQI
5th September 2025
23AQI
23AQI
6th September 2025
29AQI
29AQI
7th September 2025
26AQI
26AQI
8th September 2025
21AQI
21AQI
9th September 2025
17AQI
17AQI
10th September 2025
18AQI
18AQI
11th September 2025
30AQI
30AQI
12th September 2025
34AQI
34AQI
13th September 2025
37AQI
37AQI
14th September 2025
23AQI
23AQI
15th September 2025
24AQI
24AQI
16th September 2025
36AQI
36AQI
17th September 2025
35AQI
35AQI
18th September 2025
41AQI
41AQI
19th September 2025
40AQI
40AQI
20th September 2025
41AQI
41AQI
21st September 2025
36AQI
36AQI
22nd September 2025
35AQI
35AQI
23rd September 2025
40AQI
40AQI
24th September 2025
49AQI
49AQI
25th September 2025
39AQI
39AQI
26th September 2025
49AQI
49AQI
27th September 2025
58AQI
58AQI
28th September 2025
54AQI
54AQI
29th September 2025
37AQI
37AQI
30th September 2025
27AQI
27AQI
1st October 2025
24AQI
24AQI
2nd October 2025
33AQI
33AQI
3rd October 2025
37AQI
37AQI
4th October 2025
48AQI
48AQI
5th October 2025
48AQI
48AQI
6th October 2025
52AQI
52AQI
7th October 2025
46AQI
46AQI
8th October 2025
53AQI
53AQI
9th October 2025
47AQI
47AQI
10th October 2025
40AQI
40AQI
11th October 2025
28AQI
28AQI
12th October 2025
37AQI
37AQI
13th October 2025
54AQI
54AQI
14th October 2025
33AQI
33AQI
15th October 2025
42AQI
42AQI
16th October 2025
51AQI
51AQI
17th October 2025
51AQI
51AQI
18th October 2025
59AQI
59AQI
19th October 2025
60AQI
60AQI
20th October 2025
46AQI
46AQI
21st October 2025
48AQI
48AQI
22nd October 2025
44AQI
44AQI
23rd October 2025
47AQI
47AQI
24th October 2025
37AQI
37AQI
25th October 2025
23AQI
23AQI
26th October 2025
27th October 2025
28th October 2025
29th October 2025
30th October 2025
31st October 2025
1st November 2025
2nd November 2025
3rd November 2025
4th November 2025
5th November 2025
6th November 2025
7th November 2025
8th November 2025
9th November 2025
10th November 2025
11th November 2025
12th November 2025
13th November 2025
14th November 2025
15th November 2025
16th November 2025
17th November 2025
18th November 2025
19th November 2025
20th November 2025
21st November 2025
22nd November 2025
23rd November 2025
24th November 2025
25th November 2025
26th November 2025
27th November 2025
28th November 2025
29th November 2025
30th November 2025
1st December 2025
2nd December 2025
3rd December 2025
4th December 2025
5th December 2025
6th December 2025
7th December 2025
8th December 2025
9th December 2025
10th December 2025
11th December 2025
12th December 2025
13th December 2025
14th December 2025
15th December 2025
16th December 2025
17th December 2025
18th December 2025
19th December 2025
20th December 2025
21st December 2025
22nd December 2025
23rd December 2025
24th December 2025
25th December 2025
26th December 2025
27th December 2025
28th December 2025
29th December 2025
30th December 2025
31st December 2025
43AQI
27AQI
26AQI
32AQI
32AQI
37AQI
25AQI
31AQI
34AQI
44AQI
No. of days
Jan.Feb.Mar.Apr.MayJun.Jul.Aug.Sep.Oct.Nov.Dec.Total Days
202533AQI
22
9
28
31
29
1
31
28
2
31
31
28
2
18
7
277
21
Highest AQI recorded in
October44AQI
Lowest AQI recorded in
July25AQI
202433AQI
16
1
12
29
31
31
28
27
4
26
4
18
13
219
21
Highest AQI recorded in
December45AQI
Lowest AQI recorded in
January16AQI
202320AQI
19
3
31
53
Highest AQI recorded in
December22AQI
Lowest AQI recorded in
January17AQI
202221AQI
1
23
5
1
30
1
29
1
27
109
8
1
Highest AQI recorded in
August67AQI
Lowest AQI recorded in
December12AQI
202117AQI
23
23
Highest AQI recorded in
June17AQI
Lowest AQI recorded in
June17AQI
202078AQI
14
8
3
5
1
1
1
15
8
4
6
Highest AQI recorded in
October162AQI
Lowest AQI recorded in
November29AQI
Most & Least Polluted Years Over the Last 6 Years
Most Polluted Year Recorded
2020(Avg.)
78AQILeast Polluted Year Recorded
2021(Avg.)
17AQIFairfield's annual 2025 AQI (33) shows an average percentage change of 32.6% (worsened AQI) compared to previous years: 2020 (78), 2021 (17), 2022 (21), 2023 (20), 2024 (33).
