Fontana, 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
Fontana, California, United States
2025
AQI
.
Days
AQI Trends: Highest and Lowest
Highest AQI recorded on
6th Aug 2025
71AQILowest AQI recorded on
8th Aug 2025
56AQISame Day Analysis (8th August ):
On this day, AQI across the 1 years varied significantly: 2025 ranks 1st highest AQI at 56 of Moderate air quality on the same day.
Download 2024 Annual Data
World Air Quality Report
Day & Night AQI Trend: 8th Aug - 9th Aug 2025
Fontana, California, United States
AQI
Day
Night
.
5 AM8th Aug 2025
7 PM
4 AM9th Aug 2025
Day time
Avg. Highest Time
1PM8th Aug
69AQI
Avg. Lowest Time
6PM8th Aug
47AQI
Night time
Avg. Highest Time
10PM8th Aug
55AQI
Avg. Lowest Time
4AM9th Aug
51AQI
In the last 24 hours,
Fontana's AQI reached its highest point of 69 at 1 PM during the Day, while the lowest point, 47, was recorded at 6 PM during the Day between 8th Aug and 9th Aug 2025.
Day & Night AQI Trend : Jul - Aug 2025
Fontana, California, United States
JulAug
10th - 11th11th - 12th12th - 13th13th - 14th14th - 15th15th - 16th16th - 17th17th - 18th18th - 19th19th - 20th20th - 21st21st - 22nd22nd - 23rd23rd - 24th24th - 25th25th - 26th26th - 27th27th - 28th28th - 29th29th - 30th30th - 31st31st - 01st01st - 02nd02nd - 03rd03rd - 04th04th - 05th05th - 06th06th - 07th07th - 08th08th - 09th09th
Day
Night
10th Jul 2025525 AMAQI
10th Jul 2025546 AMAQI
10th Jul 2025507 AMAQI
10th Jul 2025528 AMAQI
10th Jul 2025529 AMAQI
10th Jul 20255810 AMAQI
10th Jul 20256011 AMAQI
10th Jul 20255612 PMAQI
10th Jul 2025551 PMAQI
10th Jul 2025552 PMAQI
10th Jul 2025543 PMAQI
10th Jul 2025504 PMAQI
10th Jul 2025505 PMAQI
10th Jul 2025536 PMAQI
10th Jul 2025547 PMAQI
10th Jul 2025548 PMAQI
10th Jul 2025529 PMAQI
10th Jul 20255010 PMAQI
10th Jul 20255211 PMAQI
11th Jul 20255512 AMAQI
11th Jul 2025551 AMAQI
11th Jul 2025572 AMAQI
11th Jul 2025543 AMAQI
11th Jul 2025594 AMAQI
29°C22/38°C
11th Jul 2025565 AMAQI
11th Jul 2025546 AMAQI
11th Jul 2025537 AMAQI
11th Jul 2025548 AMAQI
11th Jul 2025559 AMAQI
11th Jul 20255510 AMAQI
11th Jul 20255711 AMAQI
11th Jul 20255612 PMAQI
11th Jul 2025601 PMAQI
11th Jul 2025622 PMAQI
11th Jul 2025583 PMAQI
11th Jul 2025554 PMAQI
11th Jul 2025565 PMAQI
11th Jul 2025576 PMAQI
11th Jul 2025567 PMAQI
11th Jul 2025588 PMAQI
11th Jul 2025529 PMAQI
11th Jul 20255410 PMAQI
11th Jul 20255011 PMAQI
12th Jul 20255412 AMAQI
12th Jul 2025561 AMAQI
12th Jul 2025542 AMAQI
12th Jul 2025543 AMAQI
12th Jul 2025544 AMAQI
25°C20/33°C
12th Jul 2025545 AMAQI
12th Jul 2025526 AMAQI
12th Jul 2025527 AMAQI
12th Jul 2025548 AMAQI
12th Jul 2025549 AMAQI
12th Jul 20255410 AMAQI
12th Jul 20255611 AMAQI
12th Jul 20255912 PMAQI
12th Jul 2025601 PMAQI
12th Jul 2025602 PMAQI
12th Jul 2025603 PMAQI
12th Jul 2025614 PMAQI
12th Jul 2025595 PMAQI
12th Jul 2025566 PMAQI
12th Jul 2025567 PMAQI
12th Jul 2025568 PMAQI
12th Jul 2025549 PMAQI
12th Jul 20255410 PMAQI
12th Jul 20255211 PMAQI
13th Jul 20255012 AMAQI
13th Jul 2025501 AMAQI
13th Jul 2025472 AMAQI
13th Jul 2025453 AMAQI
13th Jul 2025424 AMAQI
24°C18/32°C
13th Jul 2025465 AMAQI
13th Jul 2025486 AMAQI
13th Jul 2025527 AMAQI
13th Jul 2025568 AMAQI
13th Jul 2025569 AMAQI
13th Jul 20255810 AMAQI
13th Jul 20256111 AMAQI
13th Jul 20256212 PMAQI
13th Jul 2025631 PMAQI
13th Jul 2025612 PMAQI
13th Jul 2025613 PMAQI
13th Jul 2025584 PMAQI
13th Jul 2025545 PMAQI
13th Jul 2025536 PMAQI
13th Jul 2025547 PMAQI
13th Jul 2025558 PMAQI
13th Jul 2025549 PMAQI
13th Jul 20255410 PMAQI
13th Jul 20255411 PMAQI
14th Jul 20255312 AMAQI
14th Jul 2025521 AMAQI
14th Jul 2025512 AMAQI
14th Jul 2025443 AMAQI
14th Jul 2025374 AMAQI
25°C20/33°C
14th Jul 2025345 AMAQI
14th Jul 2025346 AMAQI
14th Jul 2025457 AMAQI
14th Jul 2025508 AMAQI
14th Jul 2025549 AMAQI
14th Jul 20255510 AMAQI
14th Jul 20255811 AMAQI
14th Jul 20256012 PMAQI
14th Jul 2025591 PMAQI
14th Jul 2025592 PMAQI
14th Jul 2025563 PMAQI
14th Jul 2025544 PMAQI
14th Jul 2025545 PMAQI
14th Jul 2025536 PMAQI
14th Jul 2025547 PMAQI
14th Jul 2025578 PMAQI
14th Jul 2025549 PMAQI
14th Jul 20255310 PMAQI
14th Jul 20255411 PMAQI
15th Jul 20255312 AMAQI
15th Jul 2025521 AMAQI
15th Jul 2025482 AMAQI
15th Jul 2025443 AMAQI
15th Jul 2025414 AMAQI
25°C18/34°C
15th Jul 2025405 AMAQI
15th Jul 2025366 AMAQI
15th Jul 2025307 AMAQI
15th Jul 2025408 AMAQI
15th Jul 2025429 AMAQI
15th Jul 20254610 AMAQI
15th Jul 20255411 AMAQI
15th Jul 20255512 PMAQI
15th Jul 2025551 PMAQI
15th Jul 2025542 PMAQI
15th Jul 2025523 PMAQI
15th Jul 2025454 PMAQI
15th Jul 2025525 PMAQI
15th Jul 2025526 PMAQI
15th Jul 2025527 PMAQI
15th Jul 2025498 PMAQI
15th Jul 2025429 PMAQI
15th Jul 20253710 PMAQI
15th Jul 20253411 PMAQI
16th Jul 20253712 AMAQI
16th Jul 2025401 AMAQI
16th Jul 2025422 AMAQI
16th Jul 2025453 AMAQI
16th Jul 2025524 AMAQI
24°C19/32°C
16th Jul 2025535 AMAQI
16th Jul 2025456 AMAQI
16th Jul 2025477 AMAQI
16th Jul 2025438 AMAQI
16th Jul 2025439 AMAQI
16th Jul 20254710 AMAQI
16th Jul 20255511 AMAQI
16th Jul 20255912 PMAQI
16th Jul 2025571 PMAQI
16th Jul 2025562 PMAQI
16th Jul 2025523 PMAQI
16th Jul 2025484 PMAQI
16th Jul 2025425 PMAQI
16th Jul 2025496 PMAQI
16th Jul 2025507 PMAQI
16th Jul 2025498 PMAQI
16th Jul 2025479 PMAQI
16th Jul 20255010 PMAQI
16th Jul 20254811 PMAQI
17th Jul 20254512 AMAQI
17th Jul 2025401 AMAQI
17th Jul 2025362 AMAQI
17th Jul 2025343 AMAQI
17th Jul 2025324 AMAQI
24°C18/32°C
17th Jul 2025405 AMAQI
17th Jul 2025386 AMAQI
17th Jul 2025367 AMAQI
17th Jul 2025468 AMAQI
17th Jul 2025409 AMAQI
17th Jul 20254610 AMAQI
17th Jul 20255111 AMAQI
17th Jul 20255412 PMAQI
17th Jul 2025571 PMAQI
17th Jul 2025492 PMAQI
17th Jul 2025423 PMAQI
17th Jul 2025434 PMAQI
17th Jul 2025415 PMAQI
17th Jul 2025376 PMAQI
17th Jul 2025417 PMAQI
17th Jul 2025458 PMAQI
17th Jul 2025439 PMAQI
17th Jul 20254410 PMAQI
17th Jul 20254211 PMAQI
18th Jul 20253912 AMAQI
18th Jul 2025401 AMAQI
18th Jul 2025402 AMAQI
18th Jul 2025383 AMAQI
18th Jul 2025404 AMAQI
25°C20/34°C
18th Jul 2025385 AMAQI
18th Jul 2025366 AMAQI
18th Jul 2025447 AMAQI
18th Jul 2025438 AMAQI
18th Jul 2025449 AMAQI
18th Jul 20253910 AMAQI
18th Jul 20253911 AMAQI
18th Jul 20254412 PMAQI
18th Jul 2025511 PMAQI
18th Jul 2025562 PMAQI
18th Jul 2025453 PMAQI
18th Jul 2025474 PMAQI
18th Jul 2025465 PMAQI
18th Jul 2025476 PMAQI
18th Jul 2025447 PMAQI
18th Jul 2025448 PMAQI
18th Jul 2025509 PMAQI
18th Jul 20255210 PMAQI
18th Jul 20254811 PMAQI
19th Jul 20254812 AMAQI
19th Jul 2025481 AMAQI
19th Jul 2025422 AMAQI
19th Jul 2025403 AMAQI
19th Jul 2025394 AMAQI
24°C19/32°C
19th Jul 2025395 AMAQI
19th Jul 2025336 AMAQI
19th Jul 2025367 AMAQI
19th Jul 2025468 AMAQI
19th Jul 2025469 AMAQI
19th Jul 20254810 AMAQI
19th Jul 20255011 AMAQI
19th Jul 20255312 PMAQI
19th Jul 2025531 PMAQI
19th Jul 2025502 PMAQI
19th Jul 2025493 PMAQI
19th Jul 2025474 PMAQI
19th Jul 2025475 PMAQI
19th Jul 2025446 PMAQI
19th Jul 2025467 PMAQI
19th Jul 2025508 PMAQI
19th Jul 2025519 PMAQI
19th Jul 20254910 PMAQI
19th Jul 20254411 PMAQI
20th Jul 20254412 AMAQI
20th Jul 2025461 AMAQI
20th Jul 2025442 AMAQI
20th Jul 2025483 AMAQI
20th Jul 2025494 AMAQI
24°C20/31°C
20th Jul 2025445 AMAQI
20th Jul 2025476 AMAQI
20th Jul 2025527 AMAQI
20th Jul 2025468 AMAQI
20th Jul 2025479 AMAQI
20th Jul 20255010 AMAQI
20th Jul 20255411 AMAQI
20th Jul 20255212 PMAQI
20th Jul 2025501 PMAQI
20th Jul 2025502 PMAQI
20th Jul 2025523 PMAQI
20th Jul 2025554 PMAQI
20th Jul 2025515 PMAQI
20th Jul 2025426 PMAQI
20th Jul 2025487 PMAQI
20th Jul 2025528 PMAQI
20th Jul 2025509 PMAQI
20th Jul 20254810 PMAQI
20th Jul 20254911 PMAQI
21st Jul 20254512 AMAQI
21st Jul 2025431 AMAQI
21st Jul 2025432 AMAQI
21st Jul 2025423 AMAQI
21st Jul 2025464 AMAQI
23°C19/30°C
21st Jul 2025505 AMAQI
21st Jul 2025486 AMAQI
21st Jul 2025507 AMAQI
21st Jul 2025528 AMAQI
21st Jul 2025539 AMAQI
21st Jul 20255410 AMAQI
21st Jul 20255111 AMAQI
21st Jul 20254812 PMAQI
21st Jul 2025521 PMAQI
21st Jul 2025502 PMAQI
21st Jul 2025513 PMAQI
21st Jul 2025524 PMAQI
21st Jul 2025545 PMAQI
21st Jul 2025516 PMAQI
21st Jul 2025507 PMAQI
21st Jul 2025508 PMAQI
21st Jul 2025499 PMAQI
21st Jul 20255010 PMAQI
21st Jul 20254811 PMAQI
22nd Jul 20254412 AMAQI
22nd Jul 2025431 AMAQI
22nd Jul 2025442 AMAQI
22nd Jul 2025443 AMAQI
22nd Jul 2025414 AMAQI
21°C18/26°C
22nd Jul 2025375 AMAQI
22nd Jul 2025376 AMAQI
22nd Jul 2025447 AMAQI
22nd Jul 2025488 AMAQI
22nd Jul 2025469 AMAQI
22nd Jul 20254710 AMAQI
22nd Jul 20255011 AMAQI
22nd Jul 20254812 PMAQI
22nd Jul 2025461 PMAQI
22nd Jul 2025422 PMAQI
22nd Jul 2025423 PMAQI
22nd Jul 2025524 PMAQI
22nd Jul 2025535 PMAQI
22nd Jul 2025456 PMAQI
22nd Jul 2025457 PMAQI
22nd Jul 2025468 PMAQI
22nd Jul 2025479 PMAQI
22nd Jul 20255110 PMAQI
22nd Jul 20254411 PMAQI
23rd Jul 20253812 AMAQI
23rd Jul 2025381 AMAQI
23rd Jul 2025382 AMAQI
23rd Jul 2025373 AMAQI
23rd Jul 2025364 AMAQI
21°C18/29°C
23rd Jul 2025355 AMAQI
23rd Jul 2025366 AMAQI
23rd Jul 2025387 AMAQI
23rd Jul 2025408 AMAQI
23rd Jul 2025419 AMAQI
23rd Jul 20254110 AMAQI
23rd Jul 20254011 AMAQI
23rd Jul 20254212 PMAQI
23rd Jul 2025441 PMAQI
23rd Jul 2025482 PMAQI
23rd Jul 2025443 PMAQI
23rd Jul 2025384 PMAQI
23rd Jul 2025395 PMAQI
23rd Jul 2025386 PMAQI
23rd Jul 2025417 PMAQI
23rd Jul 2025398 PMAQI
23rd Jul 2025409 PMAQI
23rd Jul 20254110 PMAQI
23rd Jul 20253711 PMAQI
24th Jul 20253412 AMAQI
24th Jul 2025351 AMAQI
24th Jul 2025392 AMAQI
24th Jul 2025383 AMAQI
24th Jul 2025364 AMAQI
23°C18/32°C
24th Jul 2025385 AMAQI
24th Jul 2025436 AMAQI
24th Jul 2025507 AMAQI
24th Jul 2025458 AMAQI
24th Jul 2025409 AMAQI
24th Jul 20254310 AMAQI
24th Jul 20254911 AMAQI
24th Jul 20255112 PMAQI
24th Jul 2025521 PMAQI
24th Jul 2025382 PMAQI
24th Jul 2025403 PMAQI
24th Jul 2025364 PMAQI
24th Jul 2025355 PMAQI
24th Jul 2025286 PMAQI
24th Jul 2025377 PMAQI
24th Jul 2025438 PMAQI
24th Jul 2025409 PMAQI
24th Jul 20253610 PMAQI
24th Jul 20253611 PMAQI
25th Jul 20253712 AMAQI
25th Jul 2025341 AMAQI
25th Jul 2025322 AMAQI
25th Jul 2025273 AMAQI
25th Jul 2025324 AMAQI
23°C18/32°C
25th Jul 2025275 AMAQI
25th Jul 2025286 AMAQI
25th Jul 2025277 AMAQI
25th Jul 2025298 AMAQI
25th Jul 2025349 AMAQI
25th Jul 20254810 AMAQI
25th Jul 20254811 AMAQI
25th Jul 20254712 PMAQI
25th Jul 2025491 PMAQI
25th Jul 2025402 PMAQI
25th Jul 2025363 PMAQI
25th Jul 2025324 PMAQI
25th Jul 2025285 PMAQI
25th Jul 2025286 PMAQI
25th Jul 2025327 PMAQI
25th Jul 2025338 PMAQI
25th Jul 2025319 PMAQI
25th Jul 20253010 PMAQI
25th Jul 20253011 PMAQI
26th Jul 20253012 AMAQI
26th Jul 2025281 AMAQI
26th Jul 2025262 AMAQI
26th Jul 2025233 AMAQI
26th Jul 2025254 AMAQI
22°C17/30°C
26th Jul 2025265 AMAQI
26th Jul 2025216 AMAQI
26th Jul 2025207 AMAQI
26th Jul 2025268 AMAQI
26th Jul 2025289 AMAQI
26th Jul 20253010 AMAQI
26th Jul 20253811 AMAQI
26th Jul 20254212 PMAQI
26th Jul 2025451 PMAQI
26th Jul 2025502 PMAQI
26th Jul 2025433 PMAQI
26th Jul 2025404 PMAQI
26th Jul 2025385 PMAQI
26th Jul 2025386 PMAQI
26th Jul 2025357 PMAQI
26th Jul 2025338 PMAQI
26th Jul 2025359 PMAQI
26th Jul 20253610 PMAQI
26th Jul 20253611 PMAQI
27th Jul 20253612 AMAQI
27th Jul 2025381 AMAQI
27th Jul 2025372 AMAQI
27th Jul 2025363 AMAQI
27th Jul 2025324 AMAQI
21°C15/29°C
27th Jul 2025265 AMAQI
27th Jul 2025286 AMAQI
27th Jul 2025337 AMAQI
27th Jul 2025398 AMAQI
27th Jul 2025429 AMAQI
27th Jul 20253810 AMAQI
27th Jul 20254111 AMAQI
27th Jul 20254312 PMAQI
27th Jul 2025451 PMAQI
27th Jul 2025412 PMAQI
27th Jul 2025423 PMAQI
27th Jul 2025384 PMAQI
27th Jul 2025365 PMAQI
27th Jul 2025386 PMAQI
27th Jul 2025397 PMAQI
27th Jul 2025408 PMAQI
27th Jul 2025449 PMAQI
27th Jul 20254410 PMAQI
27th Jul 20253811 PMAQI
28th Jul 20253612 AMAQI
28th Jul 2025301 AMAQI
28th Jul 2025322 AMAQI
28th Jul 2025383 AMAQI
28th Jul 2025414 AMAQI
23°C17/31°C
28th Jul 2025385 AMAQI
28th Jul 2025326 AMAQI
28th Jul 2025277 AMAQI
28th Jul 2025288 AMAQI
28th Jul 2025319 AMAQI
28th Jul 20253910 AMAQI
28th Jul 20254811 AMAQI
28th Jul 20255212 PMAQI
28th Jul 2025561 PMAQI
28th Jul 2025532 PMAQI
28th Jul 2025493 PMAQI
28th Jul 2025404 PMAQI
28th Jul 2025385 PMAQI
28th Jul 2025406 PMAQI
28th Jul 2025397 PMAQI
28th Jul 2025428 PMAQI
28th Jul 2025429 PMAQI
28th Jul 20254610 PMAQI
28th Jul 20254811 PMAQI
29th Jul 20254612 AMAQI
29th Jul 2025481 AMAQI
29th Jul 2025482 AMAQI
29th Jul 2025453 AMAQI
29th Jul 2025404 AMAQI
23°C18/31°C
29th Jul 2025395 AMAQI
29th Jul 2025456 AMAQI
29th Jul 2025467 AMAQI
29th Jul 2025418 AMAQI
29th Jul 2025429 AMAQI
29th Jul 20254810 AMAQI
29th Jul 20256411 AMAQI
29th Jul 20255712 PMAQI
29th Jul 2025581 PMAQI
29th Jul 2025572 PMAQI
29th Jul 2025503 PMAQI
29th Jul 2025464 PMAQI
29th Jul 2025435 PMAQI
29th Jul 2025396 PMAQI
29th Jul 2025487 PMAQI
29th Jul 2025508 PMAQI
29th Jul 2025499 PMAQI
29th Jul 20255410 PMAQI
29th Jul 20255411 PMAQI
30th Jul 20255112 AMAQI
30th Jul 2025471 AMAQI
30th Jul 2025422 AMAQI
30th Jul 2025363 AMAQI
30th Jul 2025364 AMAQI
25°C17/35°C
30th Jul 2025415 AMAQI
30th Jul 2025486 AMAQI
30th Jul 2025507 AMAQI
30th Jul 2025498 AMAQI
30th Jul 2025559 AMAQI
30th Jul 20255810 AMAQI
30th Jul 20256011 AMAQI
30th Jul 20255612 PMAQI
30th Jul 2025561 PMAQI
30th Jul 2025542 PMAQI
30th Jul 2025563 PMAQI
30th Jul 2025564 PMAQI
30th Jul 2025565 PMAQI
30th Jul 2025566 PMAQI
30th Jul 2025567 PMAQI
30th Jul 2025568 PMAQI
30th Jul 2025529 PMAQI
30th Jul 20255210 PMAQI
30th Jul 20255211 PMAQI
31st Jul 20255212 AMAQI
31st Jul 2025521 AMAQI
31st Jul 2025492 AMAQI
31st Jul 2025523 AMAQI
31st Jul 2025564 AMAQI
26°C20/34°C
31st Jul 2025565 AMAQI
31st Jul 2025596 AMAQI
31st Jul 2025597 AMAQI
31st Jul 2025628 AMAQI
31st Jul 2025659 AMAQI
31st Jul 20257110 AMAQI
31st Jul 20256511 AMAQI
31st Jul 20256212 PMAQI
31st Jul 2025621 PMAQI
31st Jul 2025602 PMAQI
31st Jul 2025603 PMAQI
31st Jul 2025544 PMAQI
31st Jul 2025535 PMAQI
31st Jul 2025536 PMAQI
31st Jul 2025567 PMAQI
31st Jul 2025568 PMAQI
31st Jul 2025589 PMAQI
31st Jul 20256310 PMAQI
31st Jul 20255711 PMAQI
1st Aug 20255512 AMAQI
1st Aug 2025561 AMAQI
1st Aug 2025552 AMAQI
1st Aug 2025543 AMAQI
1st Aug 2025554 AMAQI
27°C21/35°C
1st Aug 2025575 AMAQI
1st Aug 2025566 AMAQI
1st Aug 2025567 AMAQI
1st Aug 2025548 AMAQI
1st Aug 2025529 AMAQI
1st Aug 20255410 AMAQI
1st Aug 20256011 AMAQI
1st Aug 20256412 PMAQI
1st Aug 2025681 PMAQI
1st Aug 2025702 PMAQI
1st Aug 2025663 PMAQI
1st Aug 2025604 PMAQI
1st Aug 2025545 PMAQI
1st Aug 2025546 PMAQI
1st Aug 2025587 PMAQI
1st Aug 2025568 PMAQI
1st Aug 2025539 PMAQI
1st Aug 20255410 PMAQI
1st Aug 20255411 PMAQI
2nd Aug 20255512 AMAQI
2nd Aug 2025521 AMAQI
2nd Aug 2025542 AMAQI
2nd Aug 2025593 AMAQI
2nd Aug 2025564 AMAQI
26°C20/34°C
2nd Aug 2025545 AMAQI
2nd Aug 2025566 AMAQI
2nd Aug 2025567 AMAQI
2nd Aug 2025548 AMAQI
2nd Aug 2025549 AMAQI
2nd Aug 20255810 AMAQI
2nd Aug 20256011 AMAQI
2nd Aug 20255812 PMAQI
2nd Aug 2025601 PMAQI
2nd Aug 2025662 PMAQI
2nd Aug 2025653 PMAQI
2nd Aug 2025594 PMAQI
2nd Aug 2025555 PMAQI
2nd Aug 2025546 PMAQI
2nd Aug 2025557 PMAQI
2nd Aug 2025568 PMAQI
2nd Aug 2025579 PMAQI
2nd Aug 20255610 PMAQI
2nd Aug 20256011 PMAQI
3rd Aug 20255812 AMAQI
3rd Aug 2025571 AMAQI
3rd Aug 2025652 AMAQI
3rd Aug 2025593 AMAQI
3rd Aug 2025584 AMAQI
26°C20/34°C
3rd Aug 2025585 AMAQI
3rd Aug 2025586 AMAQI
3rd Aug 2025587 AMAQI
3rd Aug 2025568 AMAQI
3rd Aug 2025589 AMAQI
3rd Aug 20255910 AMAQI
3rd Aug 20256311 AMAQI
3rd Aug 20256112 PMAQI
3rd Aug 2025641 PMAQI
3rd Aug 2025632 PMAQI
3rd Aug 2025623 PMAQI
3rd Aug 2025594 PMAQI
3rd Aug 2025595 PMAQI
3rd Aug 2025606 PMAQI
3rd Aug 2025557 PMAQI
3rd Aug 2025628 PMAQI
3rd Aug 2025699 PMAQI
3rd Aug 20256810 PMAQI
3rd Aug 20256411 PMAQI
4th Aug 20256612 AMAQI
4th Aug 2025621 AMAQI
4th Aug 2025592 AMAQI
4th Aug 2025583 AMAQI
4th Aug 2025624 AMAQI
27°C20/34°C
4th Aug 2025615 AMAQI
4th Aug 2025616 AMAQI
4th Aug 2025607 AMAQI
4th Aug 2025598 AMAQI
4th Aug 2025639 AMAQI
4th Aug 20256610 AMAQI
4th Aug 20256911 AMAQI
4th Aug 20257012 PMAQI
4th Aug 2025701 PMAQI
4th Aug 2025702 PMAQI
4th Aug 2025723 PMAQI
4th Aug 2025704 PMAQI
4th Aug 2025735 PMAQI
4th Aug 2025746 PMAQI
4th Aug 2025637 PMAQI
4th Aug 2025688 PMAQI
4th Aug 2025749 PMAQI
4th Aug 20256610 PMAQI
4th Aug 20256411 PMAQI
5th Aug 20256612 AMAQI
5th Aug 2025651 AMAQI
5th Aug 2025682 AMAQI
5th Aug 2025683 AMAQI
5th Aug 2025744 AMAQI
26°C21/34°C
5th Aug 2025665 AMAQI
5th Aug 2025666 AMAQI
5th Aug 2025657 AMAQI
5th Aug 2025648 AMAQI
5th Aug 2025689 AMAQI
5th Aug 20257510 AMAQI
5th Aug 20257211 AMAQI
5th Aug 20257012 PMAQI
5th Aug 2025721 PMAQI
5th Aug 2025702 PMAQI
5th Aug 2025663 PMAQI
5th Aug 2025624 PMAQI
5th Aug 2025645 PMAQI
5th Aug 2025646 PMAQI
5th Aug 2025687 PMAQI
5th Aug 2025638 PMAQI
5th Aug 2025589 PMAQI
5th Aug 20256110 PMAQI
5th Aug 20256311 PMAQI
6th Aug 20256612 AMAQI
6th Aug 2025661 AMAQI
6th Aug 2025682 AMAQI
6th Aug 2025703 AMAQI
6th Aug 2025654 AMAQI
27°C21/36°C
6th Aug 2025665 AMAQI
6th Aug 2025736 AMAQI
6th Aug 2025807 AMAQI
6th Aug 2025858 AMAQI
6th Aug 2025789 AMAQI
6th Aug 20257910 AMAQI
6th Aug 20257311 AMAQI
6th Aug 20257112 PMAQI
6th Aug 2025741 PMAQI
6th Aug 2025722 PMAQI
6th Aug 2025693 PMAQI
6th Aug 2025684 PMAQI
6th Aug 2025665 PMAQI
6th Aug 2025686 PMAQI
6th Aug 2025727 PMAQI
6th Aug 2025698 PMAQI
6th Aug 2025719 PMAQI
6th Aug 20257210 PMAQI
6th Aug 20257011 PMAQI
7th Aug 20256212 AMAQI
7th Aug 2025621 AMAQI
7th Aug 2025622 AMAQI
7th Aug 2025623 AMAQI
7th Aug 2025624 AMAQI
29°C22/37°C
7th Aug 2025665 AMAQI
7th Aug 2025666 AMAQI
7th Aug 2025647 AMAQI
7th Aug 2025648 AMAQI
7th Aug 2025649 AMAQI
7th Aug 20256510 AMAQI
7th Aug 20256311 AMAQI
7th Aug 20256212 PMAQI
7th Aug 2025641 PMAQI
7th Aug 2025632 PMAQI
7th Aug 2025603 PMAQI
7th Aug 2025554 PMAQI
7th Aug 2025525 PMAQI
7th Aug 2025526 PMAQI
7th Aug 2025607 PMAQI
7th Aug 2025618 PMAQI
7th Aug 2025559 PMAQI
7th Aug 20255510 PMAQI
7th Aug 20255411 PMAQI
8th Aug 20255212 AMAQI
8th Aug 2025511 AMAQI
8th Aug 2025552 AMAQI
8th Aug 2025563 AMAQI
8th Aug 2025544 AMAQI
31°C24/40°C
8th Aug 2025545 AMAQI
8th Aug 2025556 AMAQI
8th Aug 2025577 AMAQI
8th Aug 2025558 AMAQI
8th Aug 2025559 AMAQI
8th Aug 20256110 AMAQI
8th Aug 20256711 AMAQI
8th Aug 20256612 PMAQI
8th Aug 2025691 PMAQI
8th Aug 2025642 PMAQI
8th Aug 2025623 PMAQI
8th Aug 2025544 PMAQI
8th Aug 2025515 PMAQI
8th Aug 2025476 PMAQI
8th Aug 2025537 PMAQI
8th Aug 2025538 PMAQI
8th Aug 2025549 PMAQI
8th Aug 20255510 PMAQI
8th Aug 20255411 PMAQI
9th Aug 20255512 AMAQI
9th Aug 2025551 AMAQI
9th Aug 2025542 AMAQI
9th Aug 2025543 AMAQI
9th Aug 2025514 AMAQI
31°C25/39°C
9th Aug 2025515 AMAQI
5 AM9th Aug 2025516 AMAQI
9th Aug 2025517 AMAQI
9th Aug 2025528 AMAQI
9th Aug 2025559 AMAQI
9th Aug 20255310 AMAQI
9th Aug 20255611 AMAQI
9th Aug 20255912 PMAQI
12 PM9th Aug 2025621 PMAQI
9th Aug 2025622 PMAQI
9th Aug 2025603 PMAQI
7 PM
12 AM
4 AM
--°C/°C
Day time
Avg. Highest Time
11 AM - 3 PM
56AQI
5 hours / Day
150 hours / Month
Avg. Lowest Time
5 AM - 9 AM
48AQI
5 hours / Day
150 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 11 AM to 3 PM (Avg. 56), while the lowest AQI was between 5 AM to 9 AM (Avg. 48).
Night time
Avg. Highest Time
8 PM - 11 PM
51AQI
4 hours / Day
120 hours / Month
Avg. Lowest Time
12 AM - 4 AM
47AQI
5 hours / Day
150 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 8 PM to 11 PM (Avg. 51), while the lowest AQI was between 12 AM to 4 AM (Avg. 47).
2025 Days Vs Air Quality
Fontana, California, United States
2025
48%
65
52%
71
Total number of days with different AQI categories in last 221 days in 2025 (144 days remaining)
Good
65 DaysModerate
71 DaysPoor
0 DaysUnhealthy
0 DaysSevere
0 DaysHazardous
0 DaysUnder WHO’s Safe Air Quality Limits: 48%
Health Risk Level:
Significant
In 2025, 48% of 221 days were within WHO’s safe air quality limits, and 52% exceeded them. The risk of health issues is Significant, especially for those with existing respiratory or heart conditions.
Annual Air Quality Insights
Fontana, 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 March 2025
51AQI
51AQI
2nd March 2025
46AQI
46AQI
3rd March 2025
34AQI
34AQI
4th March 2025
35AQI
35AQI
5th March 2025
40AQI
40AQI
6th March 2025
25AQI
25AQI
1st April 2025
26AQI
26AQI
2nd April 2025
33AQI
33AQI
3rd April 2025
28AQI
28AQI
4th April 2025
27AQI
27AQI
5th April 2025
31AQI
31AQI
6th April 2025
27AQI
27AQI
7th April 2025
38AQI
38AQI
8th April 2025
48AQI
48AQI
9th April 2025
52AQI
52AQI
10th April 2025
55AQI
55AQI
11th April 2025
54AQI
54AQI
12th April 2025
52AQI
52AQI
13th April 2025
60AQI
60AQI
14th April 2025
58AQI
58AQI
15th April 2025
57AQI
57AQI
16th April 2025
44AQI
44AQI
17th April 2025
32AQI
32AQI
18th April 2025
28AQI
28AQI
19th April 2025
35AQI
35AQI
20th April 2025
37AQI
37AQI
21st April 2025
47AQI
47AQI
22nd April 2025
55AQI
55AQI
23rd April 2025
49AQI
49AQI
24th April 2025
44AQI
44AQI
25th April 2025
42AQI
42AQI
26th April 2025
22AQI
22AQI
27th April 2025
21AQI
21AQI
28th April 2025
27AQI
27AQI
29th April 2025
43AQI
43AQI
30th April 2025
52AQI
52AQI
1st May 2025
52AQI
52AQI
2nd May 2025
53AQI
53AQI
3rd May 2025
52AQI
52AQI
4th May 2025
23AQI
23AQI
5th May 2025
27AQI
27AQI
6th May 2025
37AQI
37AQI
7th May 2025
35AQI
35AQI
8th May 2025
47AQI
47AQI
9th May 2025
48AQI
48AQI
10th May 2025
42AQI
42AQI
11th May 2025
39AQI
39AQI
12th May 2025
49AQI
49AQI
13th May 2025
30AQI
30AQI
14th May 2025
33AQI
33AQI
15th May 2025
47AQI
47AQI
16th May 2025
50AQI
50AQI
17th May 2025
44AQI
44AQI
18th May 2025
43AQI
43AQI
19th May 2025
47AQI
47AQI
20th May 2025
54AQI
54AQI
21st May 2025
53AQI
53AQI
22nd May 2025
57AQI
57AQI
23rd May 2025
59AQI
59AQI
24th May 2025
53AQI
53AQI
25th May 2025
49AQI
49AQI
26th May 2025
50AQI
50AQI
27th May 2025
53AQI
53AQI
28th May 2025
53AQI
53AQI
29th May 2025
52AQI
52AQI
30th May 2025
55AQI
55AQI
31st May 2025
56AQI
56AQI
1st June 2025
48AQI
48AQI
2nd June 2025
39AQI
39AQI
3rd June 2025
44AQI
44AQI
4th June 2025
51AQI
51AQI
5th June 2025
52AQI
52AQI
6th June 2025
51AQI
51AQI
7th June 2025
54AQI
54AQI
8th June 2025
55AQI
55AQI
9th June 2025
55AQI
55AQI
10th June 2025
56AQI
56AQI
11th June 2025
57AQI
57AQI
12th June 2025
56AQI
56AQI
13th June 2025
53AQI
53AQI
14th June 2025
56AQI
56AQI
15th June 2025
56AQI
56AQI
16th June 2025
62AQI
62AQI
17th June 2025
64AQI
64AQI
18th June 2025
61AQI
61AQI
19th June 2025
59AQI
59AQI
20th June 2025
54AQI
54AQI
21st June 2025
53AQI
53AQI
22nd June 2025
53AQI
53AQI
23rd June 2025
53AQI
53AQI
24th June 2025
56AQI
56AQI
25th June 2025
55AQI
55AQI
26th June 2025
56AQI
56AQI
27th June 2025
57AQI
57AQI
28th June 2025
52AQI
52AQI
29th June 2025
51AQI
51AQI
30th June 2025
47AQI
47AQI
1st July 2025
57AQI
57AQI
2nd July 2025
63AQI
63AQI
3rd July 2025
54AQI
54AQI
4th July 2025
49AQI
49AQI
5th July 2025
94AQI
94AQI
6th July 2025
60AQI
60AQI
7th July 2025
56AQI
56AQI
8th July 2025
56AQI
56AQI
9th July 2025
54AQI
54AQI
10th July 2025
50AQI
50AQI
11th July 2025
56AQI
56AQI
12th July 2025
55AQI
55AQI
13th July 2025
53AQI
53AQI
14th July 2025
51AQI
51AQI
15th July 2025
46AQI
46AQI
16th July 2025
48AQI
48AQI
17th July 2025
42AQI
42AQI
18th July 2025
44AQI
44AQI
19th July 2025
46AQI
46AQI
20th July 2025
48AQI
48AQI
21st July 2025
49AQI
49AQI
22nd July 2025
45AQI
45AQI
23rd July 2025
39AQI
39AQI
24th July 2025
39AQI
39AQI
25th July 2025
34AQI
34AQI
26th July 2025
33AQI
33AQI
27th July 2025
38AQI
38AQI
28th July 2025
40AQI
40AQI
29th July 2025
48AQI
48AQI
30th July 2025
51AQI
51AQI
31st July 2025
57AQI
57AQI
1st August 2025
57AQI
57AQI
2nd August 2025
57AQI
57AQI
3rd August 2025
61AQI
61AQI
4th August 2025
66AQI
66AQI
5th August 2025
66AQI
66AQI
6th August 2025
71AQI
71AQI
7th August 2025
61AQI
61AQI
8th August 2025
56AQI
56AQI
39AQI
41AQI
47AQI
54AQI
50AQI
62AQI
No. of days
Jan.Feb.Mar.Apr.MayJun.Jul.Aug.Sep.Oct.Nov.Dec.Total Days
202548AQI
5
1
21
9
18
13
4
26
17
14
8
65
71
Highest AQI recorded in
August62AQI
Lowest AQI recorded in
March39AQI
Most & Least Polluted Years Over the Last 1 Years
Most Polluted Year Recorded
2025(Avg.)
48AQILeast Polluted Year Recorded
2025(Avg.)
48AQIFontana's annual 2025 AQI (48) shows an average percentage change of NaN% (improved AQI) compared to previous years: .
