Merced, 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
Merced, California, United States
2021
2022
2023
2024
2025
AQI
.
Days
AQI Trends: Highest and Lowest
Highest AQI recorded on
4th Oct 2021
159AQILowest AQI recorded on
22nd Oct 2021
18AQISame Day Analysis (17th October ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 1st highest AQI at 54 of Moderate air quality on the same day.
Download 2024 Annual Data
World Air Quality Report
Day & Night AQI Trend: 17th Oct - 18th Oct 2025
Merced, California, United States
AQI
Day
Night
.
7 AM17th Oct 2025
6 PM
6 AM18th Oct 2025
Day time
Avg. Highest Time
2PM17th Oct
63AQI
Avg. Lowest Time
9AM17th Oct
29AQI
Night time
Avg. Highest Time
1AM18th Oct
71AQI
Avg. Lowest Time
9PM17th Oct
47AQI
In the last 24 hours,
Merced's AQI reached its highest point of 71 at 1 AM during the Night, while the lowest point, 29, was recorded at 9 AM during the Day between 17th Oct and 18th Oct 2025.
Day & Night AQI Trend : Sep - Oct 2025
Merced, California, United States
SepOct
18th - 19th19th - 20th20th - 21st21st - 22nd22nd - 23rd23rd - 24th24th - 25th25th - 26th26th - 27th27th - 28th28th - 29th29th - 30th30th - 01st01st - 02nd02nd - 03rd03rd - 04th04th - 05th05th - 06th06th - 07th07th - 08th08th - 09th09th - 10th10th - 11th11th - 12th12th - 13th13th - 14th14th - 15th15th - 16th16th - 17th17th - 18th18th
Day
Night
18th Sep 2025367 AMAQI
18th Sep 2025358 AMAQI
18th Sep 2025379 AMAQI
18th Sep 20254210 AMAQI
18th Sep 20255011 AMAQI
18th Sep 20255912 PMAQI
18th Sep 2025591 PMAQI
18th Sep 2025582 PMAQI
18th Sep 2025643 PMAQI
18th Sep 2025624 PMAQI
18th Sep 2025625 PMAQI
18th Sep 2025676 PMAQI
18th Sep 2025567 PMAQI
18th Sep 2025578 PMAQI
18th Sep 2025609 PMAQI
18th Sep 20255910 PMAQI
18th Sep 20255711 PMAQI
19th Sep 20255912 AMAQI
19th Sep 2025541 AMAQI
19th Sep 2025522 AMAQI
19th Sep 2025523 AMAQI
19th Sep 2025524 AMAQI
19th Sep 2025525 AMAQI
19th Sep 2025526 AMAQI
25°C19/33°C
19th Sep 2025527 AMAQI
19th Sep 2025478 AMAQI
19th Sep 2025469 AMAQI
19th Sep 20254910 AMAQI
19th Sep 20255211 AMAQI
19th Sep 20255612 PMAQI
19th Sep 2025541 PMAQI
19th Sep 2025552 PMAQI
19th Sep 2025563 PMAQI
19th Sep 2025554 PMAQI
19th Sep 2025545 PMAQI
19th Sep 2025536 PMAQI
19th Sep 2025537 PMAQI
19th Sep 2025518 PMAQI
19th Sep 2025459 PMAQI
19th Sep 20254410 PMAQI
19th Sep 20254711 PMAQI
20th Sep 20255012 AMAQI
20th Sep 2025521 AMAQI
20th Sep 2025512 AMAQI
20th Sep 2025513 AMAQI
20th Sep 2025494 AMAQI
20th Sep 2025485 AMAQI
20th Sep 2025516 AMAQI
25°C19/34°C
20th Sep 2025507 AMAQI
20th Sep 2025508 AMAQI
20th Sep 2025489 AMAQI
20th Sep 20254610 AMAQI
20th Sep 20254711 AMAQI
20th Sep 20255012 PMAQI
20th Sep 2025531 PMAQI
20th Sep 2025552 PMAQI
20th Sep 2025543 PMAQI
20th Sep 2025534 PMAQI
20th Sep 2025535 PMAQI
20th Sep 2025526 PMAQI
20th Sep 2025527 PMAQI
20th Sep 2025508 PMAQI
20th Sep 2025499 PMAQI
20th Sep 20254910 PMAQI
20th Sep 20255111 PMAQI
21st Sep 20255212 AMAQI
21st Sep 2025521 AMAQI
21st Sep 2025482 AMAQI
21st Sep 2025473 AMAQI
21st Sep 2025394 AMAQI
21st Sep 2025335 AMAQI
21st Sep 2025296 AMAQI
25°C14/36°C
21st Sep 2025317 AMAQI
21st Sep 2025318 AMAQI
21st Sep 2025329 AMAQI
21st Sep 20253410 AMAQI
21st Sep 20253411 AMAQI
21st Sep 20253612 PMAQI
21st Sep 2025341 PMAQI
21st Sep 2025342 PMAQI
21st Sep 2025353 PMAQI
21st Sep 2025364 PMAQI
21st Sep 2025365 PMAQI
21st Sep 2025376 PMAQI
21st Sep 2025377 PMAQI
21st Sep 2025378 PMAQI
21st Sep 2025359 PMAQI
21st Sep 20253610 PMAQI
21st Sep 20253911 PMAQI
22nd Sep 20254112 AMAQI
22nd Sep 2025411 AMAQI
22nd Sep 2025422 AMAQI
22nd Sep 2025373 AMAQI
22nd Sep 2025314 AMAQI
22nd Sep 2025285 AMAQI
22nd Sep 2025316 AMAQI
26°C17/36°C
22nd Sep 2025317 AMAQI
22nd Sep 2025338 AMAQI
22nd Sep 2025369 AMAQI
22nd Sep 20253910 AMAQI
22nd Sep 20254111 AMAQI
22nd Sep 20253712 PMAQI
22nd Sep 2025381 PMAQI
22nd Sep 2025392 PMAQI
22nd Sep 2025433 PMAQI
22nd Sep 2025404 PMAQI
22nd Sep 2025395 PMAQI
22nd Sep 2025396 PMAQI
22nd Sep 2025357 PMAQI
22nd Sep 2025358 PMAQI
22nd Sep 2025369 PMAQI
22nd Sep 20253910 PMAQI
22nd Sep 20254311 PMAQI
23rd Sep 20254612 AMAQI
23rd Sep 2025471 AMAQI
23rd Sep 2025482 AMAQI
23rd Sep 2025443 AMAQI
23rd Sep 2025434 AMAQI
23rd Sep 2025465 AMAQI
23rd Sep 2025426 AMAQI
26°C16/36°C
23rd Sep 2025427 AMAQI
23rd Sep 2025398 AMAQI
23rd Sep 2025409 AMAQI
23rd Sep 20254110 AMAQI
23rd Sep 20254111 AMAQI
23rd Sep 20254712 PMAQI
23rd Sep 2025501 PMAQI
23rd Sep 2025492 PMAQI
23rd Sep 2025483 PMAQI
23rd Sep 2025484 PMAQI
23rd Sep 2025495 PMAQI
23rd Sep 2025486 PMAQI
23rd Sep 2025457 PMAQI
23rd Sep 2025458 PMAQI
23rd Sep 2025429 PMAQI
23rd Sep 20254510 PMAQI
23rd Sep 20254611 PMAQI
24th Sep 20255012 AMAQI
24th Sep 2025511 AMAQI
24th Sep 2025502 AMAQI
24th Sep 2025503 AMAQI
24th Sep 2025464 AMAQI
24th Sep 2025495 AMAQI
24th Sep 2025496 AMAQI
27°C16/39°C
24th Sep 2025567 AMAQI
24th Sep 2025488 AMAQI
24th Sep 2025479 AMAQI
24th Sep 20254410 AMAQI
24th Sep 20254611 AMAQI
24th Sep 20254912 PMAQI
24th Sep 2025521 PMAQI
24th Sep 2025512 PMAQI
24th Sep 2025513 PMAQI
24th Sep 2025524 PMAQI
24th Sep 2025515 PMAQI
24th Sep 2025486 PMAQI
24th Sep 2025477 PMAQI
24th Sep 2025508 PMAQI
24th Sep 2025519 PMAQI
24th Sep 20255310 PMAQI
24th Sep 20255211 PMAQI
25th Sep 20254512 AMAQI
25th Sep 2025401 AMAQI
25th Sep 2025452 AMAQI
25th Sep 2025353 AMAQI
25th Sep 2025374 AMAQI
25th Sep 2025345 AMAQI
25th Sep 2025376 AMAQI
26°C21/34°C
25th Sep 2025397 AMAQI
25th Sep 2025358 AMAQI
25th Sep 2025359 AMAQI
25th Sep 20253910 AMAQI
25th Sep 20254311 AMAQI
25th Sep 20254312 PMAQI
25th Sep 2025411 PMAQI
25th Sep 2025342 PMAQI
25th Sep 2025373 PMAQI
25th Sep 2025414 PMAQI
25th Sep 2025445 PMAQI
25th Sep 2025466 PMAQI
25th Sep 2025457 PMAQI
25th Sep 2025478 PMAQI
25th Sep 2025459 PMAQI
25th Sep 20254210 PMAQI
25th Sep 20253611 PMAQI
26th Sep 20253212 AMAQI
26th Sep 2025361 AMAQI
26th Sep 2025322 AMAQI
26th Sep 2025383 AMAQI
26th Sep 2025364 AMAQI
26th Sep 2025345 AMAQI
26th Sep 2025326 AMAQI
26°C20/34°C
26th Sep 2025367 AMAQI
26th Sep 2025438 AMAQI
26th Sep 2025459 AMAQI
26th Sep 20254010 AMAQI
26th Sep 20254011 AMAQI
26th Sep 20254412 PMAQI
26th Sep 2025421 PMAQI
26th Sep 2025442 PMAQI
26th Sep 2025493 PMAQI
26th Sep 2025494 PMAQI
26th Sep 2025545 PMAQI
26th Sep 2025536 PMAQI
26th Sep 2025487 PMAQI
26th Sep 2025478 PMAQI
26th Sep 2025499 PMAQI
26th Sep 20255310 PMAQI
26th Sep 20255911 PMAQI
27th Sep 20256312 AMAQI
27th Sep 2025721 AMAQI
27th Sep 2025652 AMAQI
27th Sep 2025553 AMAQI
27th Sep 2025534 AMAQI
27th Sep 2025535 AMAQI
27th Sep 2025496 AMAQI
24°C15/33°C
27th Sep 2025447 AMAQI
27th Sep 2025488 AMAQI
27th Sep 2025389 AMAQI
27th Sep 20254810 AMAQI
27th Sep 20254411 AMAQI
27th Sep 20255312 PMAQI
27th Sep 2025731 PMAQI
27th Sep 2025702 PMAQI
27th Sep 2025593 PMAQI
27th Sep 2025544 PMAQI
27th Sep 2025465 PMAQI
27th Sep 2025446 PMAQI
27th Sep 2025527 PMAQI
27th Sep 2025658 PMAQI
27th Sep 2025669 PMAQI
27th Sep 20256510 PMAQI
27th Sep 20255011 PMAQI
28th Sep 20253412 AMAQI
28th Sep 2025381 AMAQI
28th Sep 2025332 AMAQI
28th Sep 2025283 AMAQI
28th Sep 2025374 AMAQI
28th Sep 2025395 AMAQI
28th Sep 2025406 AMAQI
25°C18/34°C
28th Sep 2025427 AMAQI
28th Sep 2025398 AMAQI
28th Sep 2025409 AMAQI
28th Sep 20254410 AMAQI
28th Sep 20254411 AMAQI
28th Sep 20254712 PMAQI
28th Sep 2025431 PMAQI
28th Sep 2025362 PMAQI
28th Sep 2025253 PMAQI
28th Sep 2025224 PMAQI
28th Sep 2025265 PMAQI
28th Sep 2025276 PMAQI
28th Sep 2025287 PMAQI
28th Sep 2025308 PMAQI
28th Sep 2025319 PMAQI
28th Sep 20253510 PMAQI
28th Sep 20254411 PMAQI
29th Sep 20254012 AMAQI
29th Sep 2025371 AMAQI
29th Sep 2025312 AMAQI
29th Sep 2025443 AMAQI
29th Sep 2025484 AMAQI
29th Sep 2025345 AMAQI
29th Sep 2025336 AMAQI
23°C16/31°C
29th Sep 2025387 AMAQI
29th Sep 2025348 AMAQI
29th Sep 2025309 AMAQI
29th Sep 20253210 AMAQI
29th Sep 20253411 AMAQI
29th Sep 20254112 PMAQI
29th Sep 2025381 PMAQI
29th Sep 2025332 PMAQI
29th Sep 2025423 PMAQI
29th Sep 2025364 PMAQI
29th Sep 2025355 PMAQI
29th Sep 2025396 PMAQI
29th Sep 2025407 PMAQI
29th Sep 2025418 PMAQI
29th Sep 2025429 PMAQI
29th Sep 20253810 PMAQI
29th Sep 20254311 PMAQI
30th Sep 20254012 AMAQI
30th Sep 2025381 AMAQI
30th Sep 2025402 AMAQI
30th Sep 2025383 AMAQI
30th Sep 2025404 AMAQI
30th Sep 2025405 AMAQI
30th Sep 2025376 AMAQI
22°C16/30°C
30th Sep 2025407 AMAQI
30th Sep 2025368 AMAQI
30th Sep 2025319 AMAQI
30th Sep 20253310 AMAQI
30th Sep 20253411 AMAQI
30th Sep 20254212 PMAQI
30th Sep 2025321 PMAQI
30th Sep 2025392 PMAQI
30th Sep 2025373 PMAQI
30th Sep 2025274 PMAQI
30th Sep 2025285 PMAQI
30th Sep 2025306 PMAQI
30th Sep 2025397 PMAQI
30th Sep 2025418 PMAQI
30th Sep 2025339 PMAQI
30th Sep 20253410 PMAQI
30th Sep 20253511 PMAQI
1st Oct 20253312 AMAQI
1st Oct 2025341 AMAQI
1st Oct 2025332 AMAQI
1st Oct 2025333 AMAQI
1st Oct 2025264 AMAQI
1st Oct 2025235 AMAQI
1st Oct 2025266 AMAQI
22°C14/30°C
1st Oct 2025337 AMAQI
1st Oct 2025388 AMAQI
1st Oct 2025449 AMAQI
1st Oct 20254410 AMAQI
1st Oct 20254911 AMAQI
1st Oct 20254412 PMAQI
1st Oct 2025381 PMAQI
1st Oct 2025372 PMAQI
1st Oct 2025373 PMAQI
1st Oct 2025484 PMAQI
1st Oct 2025545 PMAQI
1st Oct 2025546 PMAQI
1st Oct 2025557 PMAQI
1st Oct 2025568 PMAQI
1st Oct 2025559 PMAQI
1st Oct 20254910 PMAQI
1st Oct 20254611 PMAQI
2nd Oct 20254512 AMAQI
2nd Oct 2025391 AMAQI
2nd Oct 2025382 AMAQI
2nd Oct 2025353 AMAQI
2nd Oct 2025294 AMAQI
2nd Oct 2025195 AMAQI
2nd Oct 2025286 AMAQI
22°C15/30°C
2nd Oct 2025107 AMAQI
2nd Oct 2025198 AMAQI
2nd Oct 2025319 AMAQI
2nd Oct 20252510 AMAQI
2nd Oct 20253111 AMAQI
2nd Oct 20253612 PMAQI
2nd Oct 2025391 PMAQI
2nd Oct 2025392 PMAQI
2nd Oct 2025263 PMAQI
2nd Oct 2025244 PMAQI
2nd Oct 2025205 PMAQI
2nd Oct 2025206 PMAQI
2nd Oct 2025207 PMAQI
2nd Oct 2025158 PMAQI
2nd Oct 2025119 PMAQI
2nd Oct 20251410 PMAQI
2nd Oct 20252211 PMAQI
3rd Oct 20253512 AMAQI
3rd Oct 2025391 AMAQI
3rd Oct 2025452 AMAQI
3rd Oct 2025363 AMAQI
3rd Oct 2025224 AMAQI
3rd Oct 2025325 AMAQI
3rd Oct 2025436 AMAQI
21°C17/29°C
3rd Oct 2025447 AMAQI
3rd Oct 2025248 AMAQI
3rd Oct 2025299 AMAQI
3rd Oct 20254910 AMAQI
3rd Oct 20254711 AMAQI
3rd Oct 20255412 PMAQI
3rd Oct 2025611 PMAQI
3rd Oct 2025592 PMAQI
3rd Oct 2025313 PMAQI
3rd Oct 2025244 PMAQI
3rd Oct 2025245 PMAQI
3rd Oct 2025296 PMAQI
3rd Oct 2025357 PMAQI
3rd Oct 2025238 PMAQI
3rd Oct 2025219 PMAQI
3rd Oct 20251910 PMAQI
3rd Oct 20252011 PMAQI
4th Oct 20252012 AMAQI
4th Oct 2025211 AMAQI
4th Oct 2025202 AMAQI
4th Oct 2025333 AMAQI
4th Oct 2025444 AMAQI
4th Oct 2025525 AMAQI
4th Oct 2025456 AMAQI
18°C12/26°C
4th Oct 2025477 AMAQI
4th Oct 2025448 AMAQI
4th Oct 2025449 AMAQI
4th Oct 20253910 AMAQI
4th Oct 20253911 AMAQI
4th Oct 20254012 PMAQI
4th Oct 2025511 PMAQI
4th Oct 2025512 PMAQI
4th Oct 2025393 PMAQI
4th Oct 2025284 PMAQI
4th Oct 2025425 PMAQI
4th Oct 2025366 PMAQI
4th Oct 2025317 PMAQI
4th Oct 2025308 PMAQI
4th Oct 2025339 PMAQI
4th Oct 20254310 PMAQI
4th Oct 20254611 PMAQI
5th Oct 20255012 AMAQI
5th Oct 2025541 AMAQI
5th Oct 2025542 AMAQI
5th Oct 2025523 AMAQI
5th Oct 2025484 AMAQI
5th Oct 2025355 AMAQI
5th Oct 2025486 AMAQI
19°C11/28°C
5th Oct 2025547 AMAQI
5th Oct 2025548 AMAQI
5th Oct 2025479 AMAQI
5th Oct 20254510 AMAQI
5th Oct 20254511 AMAQI
5th Oct 20254212 PMAQI
5th Oct 2025431 PMAQI
5th Oct 2025522 PMAQI
5th Oct 2025523 PMAQI
5th Oct 2025514 PMAQI
5th Oct 2025345 PMAQI
5th Oct 2025336 PMAQI
5th Oct 2025407 PMAQI
5th Oct 2025338 PMAQI
5th Oct 2025449 PMAQI
5th Oct 20255110 PMAQI
5th Oct 20255111 PMAQI
6th Oct 20255212 AMAQI
6th Oct 2025421 AMAQI
6th Oct 2025512 AMAQI
6th Oct 2025553 AMAQI
6th Oct 2025524 AMAQI
6th Oct 2025455 AMAQI
6th Oct 2025426 AMAQI
20°C12/29°C
6th Oct 2025437 AMAQI
6th Oct 2025428 AMAQI
6th Oct 2025359 AMAQI
6th Oct 20253710 AMAQI
7th Oct 2025364 AMAQI
7th Oct 2025355 AMAQI
7th Oct 2025586 AMAQI
22°C11/33°C
7th Oct 2025627 AMAQI
7th Oct 2025568 AMAQI
7th Oct 2025539 AMAQI
7th Oct 20255210 AMAQI
7th Oct 20255511 AMAQI
7th Oct 20255612 PMAQI
7th Oct 2025611 PMAQI
7th Oct 2025702 PMAQI
7th Oct 2025653 PMAQI
7th Oct 2025584 PMAQI
7th Oct 2025615 PMAQI
7th Oct 2025666 PMAQI
7th Oct 2025717 PMAQI
7th Oct 2025718 PMAQI
7th Oct 2025779 PMAQI
7th Oct 20257110 PMAQI
7th Oct 20257111 PMAQI
8th Oct 20256812 AMAQI
8th Oct 2025691 AMAQI
8th Oct 2025632 AMAQI
8th Oct 2025643 AMAQI
8th Oct 2025604 AMAQI
8th Oct 2025565 AMAQI
8th Oct 2025566 AMAQI
23°C13/35°C
8th Oct 2025547 AMAQI
8th Oct 2025498 AMAQI
8th Oct 2025509 AMAQI
8th Oct 20255510 AMAQI
8th Oct 20256011 AMAQI
8th Oct 20256512 PMAQI
8th Oct 2025681 PMAQI
8th Oct 2025682 PMAQI
8th Oct 2025653 PMAQI
8th Oct 2025634 PMAQI
8th Oct 2025645 PMAQI
8th Oct 2025646 PMAQI
8th Oct 2025577 PMAQI
8th Oct 2025558 PMAQI
8th Oct 2025569 PMAQI
8th Oct 20255510 PMAQI
8th Oct 20255411 PMAQI
9th Oct 20254712 AMAQI
9th Oct 2025421 AMAQI
9th Oct 2025472 AMAQI
9th Oct 2025483 AMAQI
9th Oct 2025514 AMAQI
9th Oct 2025525 AMAQI
9th Oct 2025496 AMAQI
21°C13/31°C
9th Oct 2025507 AMAQI
9th Oct 2025488 AMAQI
9th Oct 2025529 AMAQI
9th Oct 20255710 AMAQI
9th Oct 20255611 AMAQI
9th Oct 20255912 PMAQI
9th Oct 2025551 PMAQI
9th Oct 2025512 PMAQI
9th Oct 2025493 PMAQI
9th Oct 2025444 PMAQI
9th Oct 2025335 PMAQI
9th Oct 2025306 PMAQI
9th Oct 2025327 PMAQI
9th Oct 2025318 PMAQI
9th Oct 2025469 PMAQI
9th Oct 20255510 PMAQI
9th Oct 20256611 PMAQI
10th Oct 20257212 AMAQI
10th Oct 2025601 AMAQI
10th Oct 2025592 AMAQI
10th Oct 2025673 AMAQI
10th Oct 2025584 AMAQI
10th Oct 2025555 AMAQI
10th Oct 2025486 AMAQI
19°C12/28°C
10th Oct 2025437 AMAQI
10th Oct 2025508 AMAQI
10th Oct 2025509 AMAQI
10th Oct 20254510 AMAQI
10th Oct 20255011 AMAQI
10th Oct 20255412 PMAQI
10th Oct 2025551 PMAQI
10th Oct 2025562 PMAQI
10th Oct 2025593 PMAQI
10th Oct 2025604 PMAQI
10th Oct 2025605 PMAQI
10th Oct 2025566 PMAQI
10th Oct 2025567 PMAQI
10th Oct 2025608 PMAQI
10th Oct 2025599 PMAQI
10th Oct 20255510 PMAQI
10th Oct 20255011 PMAQI
11th Oct 20254112 AMAQI
11th Oct 2025411 AMAQI
11th Oct 2025252 AMAQI
11th Oct 2025353 AMAQI
11th Oct 2025424 AMAQI
11th Oct 2025395 AMAQI
11th Oct 2025156 AMAQI
19°C12/28°C
11th Oct 2025197 AMAQI
11th Oct 2025208 AMAQI
11th Oct 2025199 AMAQI
11th Oct 20252610 AMAQI
11th Oct 20253611 AMAQI
11th Oct 20253912 PMAQI
11th Oct 2025481 PMAQI
11th Oct 2025502 PMAQI
11th Oct 2025573 PMAQI
11th Oct 2025604 PMAQI
11th Oct 2025605 PMAQI
11th Oct 2025616 PMAQI
11th Oct 2025567 PMAQI
11th Oct 2025548 PMAQI
11th Oct 2025499 PMAQI
11th Oct 20254810 PMAQI
11th Oct 20254711 PMAQI
12th Oct 20254712 AMAQI
12th Oct 2025411 AMAQI
12th Oct 2025462 AMAQI
12th Oct 2025473 AMAQI
12th Oct 2025324 AMAQI
12th Oct 2025325 AMAQI
12th Oct 2025206 AMAQI
18°C12/26°C
12th Oct 2025207 AMAQI
12th Oct 2025248 AMAQI
12th Oct 2025279 AMAQI
12th Oct 20253610 AMAQI
12th Oct 20255111 AMAQI
12th Oct 20255312 PMAQI
12th Oct 2025471 PMAQI
12th Oct 2025362 PMAQI
12th Oct 2025413 PMAQI
12th Oct 2025394 PMAQI
12th Oct 2025345 PMAQI
12th Oct 2025336 PMAQI
12th Oct 2025327 PMAQI
12th Oct 2025328 PMAQI
12th Oct 2025429 PMAQI
12th Oct 20255110 PMAQI
12th Oct 20255411 PMAQI
13th Oct 20255612 AMAQI
13th Oct 2025501 AMAQI
13th Oct 2025432 AMAQI
13th Oct 2025403 AMAQI
13th Oct 2025364 AMAQI
13th Oct 2025325 AMAQI
13th Oct 2025306 AMAQI
17°C8/27°C
13th Oct 2025207 AMAQI
13th Oct 2025308 AMAQI
13th Oct 2025399 AMAQI
13th Oct 20254710 AMAQI
13th Oct 20255111 AMAQI
13th Oct 20254812 PMAQI
13th Oct 2025541 PMAQI
13th Oct 2025542 PMAQI
13th Oct 2025593 PMAQI
13th Oct 2025594 PMAQI
13th Oct 2025515 PMAQI
13th Oct 2025516 PMAQI
13th Oct 2025567 PMAQI
13th Oct 2025618 PMAQI
13th Oct 2025569 PMAQI
13th Oct 20255310 PMAQI
13th Oct 20254411 PMAQI
14th Oct 20253112 AMAQI
14th Oct 2025201 AMAQI
14th Oct 2025162 AMAQI
14th Oct 202593 AMAQI
14th Oct 202584 AMAQI
14th Oct 202585 AMAQI
14th Oct 202566 AMAQI
15°C10/23°C
14th Oct 2025127 AMAQI
14th Oct 2025408 AMAQI
14th Oct 2025399 AMAQI
14th Oct 20251510 AMAQI
14th Oct 20252011 AMAQI
14th Oct 20252312 PMAQI
14th Oct 2025211 PMAQI
14th Oct 202562 PMAQI
14th Oct 202563 PMAQI
14th Oct 2025174 PMAQI
14th Oct 2025135 PMAQI
14th Oct 2025156 PMAQI
14th Oct 2025177 PMAQI
14th Oct 2025288 PMAQI
14th Oct 2025289 PMAQI
14th Oct 20253110 PMAQI
14th Oct 20251111 PMAQI
15th Oct 2025612 AMAQI
15th Oct 202591 AMAQI
15th Oct 202572 AMAQI
15th Oct 202563 AMAQI
15th Oct 202564 AMAQI
15th Oct 202565 AMAQI
15th Oct 202566 AMAQI
12°C11/14°C
15th Oct 202577 AMAQI
15th Oct 202588 AMAQI
15th Oct 2025129 AMAQI
15th Oct 20251510 AMAQI
15th Oct 20253011 AMAQI
15th Oct 20253712 PMAQI
15th Oct 2025111 PMAQI
15th Oct 202592 PMAQI
15th Oct 2025133 PMAQI
15th Oct 2025104 PMAQI
15th Oct 2025215 PMAQI
15th Oct 2025296 PMAQI
15th Oct 2025487 PMAQI
15th Oct 2025468 PMAQI
15th Oct 2025419 PMAQI
15th Oct 20254710 PMAQI
15th Oct 20255611 PMAQI
16th Oct 20256112 AMAQI
16th Oct 2025581 AMAQI
16th Oct 2025532 AMAQI
16th Oct 2025533 AMAQI
16th Oct 2025564 AMAQI
16th Oct 2025535 AMAQI
16th Oct 2025486 AMAQI
14°C9/19°C
16th Oct 2025547 AMAQI
16th Oct 2025558 AMAQI
16th Oct 2025579 AMAQI
16th Oct 20255510 AMAQI
16th Oct 20255211 AMAQI
16th Oct 20255412 PMAQI
16th Oct 2025561 PMAQI
16th Oct 2025522 PMAQI
16th Oct 2025473 PMAQI
16th Oct 2025394 PMAQI
16th Oct 2025305 PMAQI
16th Oct 2025166 PMAQI
16th Oct 2025147 PMAQI
16th Oct 2025348 PMAQI
16th Oct 2025399 PMAQI
16th Oct 20254410 PMAQI
16th Oct 20255211 PMAQI
17th Oct 20255112 AMAQI
17th Oct 2025541 AMAQI
17th Oct 2025652 AMAQI
17th Oct 2025623 AMAQI
17th Oct 2025564 AMAQI
17th Oct 2025555 AMAQI
17th Oct 2025486 AMAQI
14°C9/22°C
17th Oct 2025487 AMAQI
17th Oct 2025408 AMAQI
17th Oct 2025299 AMAQI
17th Oct 20254610 AMAQI
17th Oct 20255211 AMAQI
17th Oct 20255812 PMAQI
17th Oct 2025611 PMAQI
17th Oct 2025632 PMAQI
17th Oct 2025593 PMAQI
17th Oct 2025534 PMAQI
17th Oct 2025545 PMAQI
17th Oct 2025576 PMAQI
17th Oct 2025557 PMAQI
17th Oct 2025548 PMAQI
17th Oct 2025479 PMAQI
17th Oct 20255310 PMAQI
17th Oct 20256111 PMAQI
18th Oct 20256912 AMAQI
18th Oct 2025711 AMAQI
18th Oct 2025712 AMAQI
18th Oct 2025663 AMAQI
18th Oct 2025604 AMAQI
18th Oct 2025585 AMAQI
18th Oct 2025606 AMAQI
16°C8/26°C
18th Oct 2025587 AMAQI
7 AM18th Oct 2025558 AMAQI
18th Oct 2025569 AMAQI
18th Oct 20255510 AMAQI
18th Oct 20255711 AMAQI
12 PM
6 PM
12 AM
6 AM
--°C/°C
Day time
Avg. Highest Time
12 PM - 2 PM
47AQI
3 hours / Day
90 hours / Month
Avg. Lowest Time
7 AM - 9 AM
39AQI
3 hours / Day
90 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 12 PM to 2 PM (Avg. 47), while the lowest AQI was between 7 AM to 9 AM (Avg. 39).
Night time
Avg. Highest Time
10 PM - 11 PM
47AQI
2 hours / Day
60 hours / Month
Avg. Lowest Time
5 AM - 6 AM
39AQI
2 hours / Day
60 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 10 PM to 11 PM (Avg. 47), while the lowest AQI was between 5 AM to 6 AM (Avg. 39).
2025 Days Vs Air Quality
Merced, California, United States
2025
91%
265
9%
25
Total number of days with different AQI categories in last 291 days in 2025 (74 days remaining)
Good
265 DaysModerate
25 DaysPoor
0 DaysUnhealthy
0 DaysSevere
0 DaysHazardous
0 DaysUnder WHO’s Safe Air Quality Limits: 91%
Health Risk Level:
Very Low
In 2025, 91% of 291 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
Merced, 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
59AQI
59AQI
2nd January 2025
54AQI
54AQI
3rd January 2025
54AQI
54AQI
4th January 2025
27AQI
27AQI
5th January 2025
29AQI
29AQI
6th January 2025
33AQI
33AQI
7th January 2025
29AQI
29AQI
8th January 2025
40AQI
40AQI
9th January 2025
46AQI
46AQI
10th January 2025
46AQI
46AQI
11th January 2025
39AQI
39AQI
12th January 2025
32AQI
32AQI
13th January 2025
35AQI
35AQI
14th January 2025
35AQI
35AQI
15th January 2025
44AQI
44AQI
16th January 2025
44AQI
44AQI
17th January 2025
48AQI
48AQI
18th January 2025
55AQI
55AQI
19th January 2025
54AQI
54AQI
20th January 2025
53AQI
53AQI
21st January 2025
43AQI
43AQI
22nd January 2025
48AQI
48AQI
23rd January 2025
53AQI
53AQI
24th January 2025
58AQI
58AQI
25th January 2025
51AQI
51AQI
26th January 2025
31AQI
31AQI
27th January 2025
29AQI
29AQI
28th January 2025
38AQI
38AQI
29th January 2025
48AQI
48AQI
30th January 2025
51AQI
51AQI
31st January 2025
59AQI
59AQI
1st February 2025
57AQI
57AQI
2nd February 2025
30AQI
30AQI
3rd February 2025
24AQI
24AQI
4th February 2025
23AQI
23AQI
5th February 2025
24AQI
24AQI
6th February 2025
24AQI
24AQI
7th February 2025
24AQI
24AQI
8th February 2025
24AQI
24AQI
9th February 2025
26AQI
26AQI
10th February 2025
26AQI
26AQI
11th February 2025
28AQI
28AQI
12th February 2025
26AQI
26AQI
13th February 2025
25AQI
25AQI
14th February 2025
27AQI
27AQI
15th February 2025
29AQI
29AQI
16th February 2025
28AQI
28AQI
17th February 2025
30AQI
30AQI
18th February 2025
24AQI
24AQI
19th February 2025
25AQI
25AQI
20th February 2025
24AQI
24AQI
21st February 2025
36AQI
36AQI
22nd February 2025
36AQI
36AQI
23rd February 2025
38AQI
38AQI
24th February 2025
34AQI
34AQI
25th February 2025
26AQI
26AQI
26th February 2025
30AQI
30AQI
27th February 2025
33AQI
33AQI
28th February 2025
38AQI
38AQI
1st March 2025
31AQI
31AQI
2nd March 2025
27AQI
27AQI
3rd March 2025
24AQI
24AQI
4th March 2025
24AQI
24AQI
5th March 2025
26AQI
26AQI
6th March 2025
25AQI
25AQI
7th March 2025
23AQI
23AQI
8th March 2025
27AQI
27AQI
9th March 2025
34AQI
34AQI
10th March 2025
29AQI
29AQI
11th March 2025
27AQI
27AQI
12th March 2025
28AQI
28AQI
13th March 2025
21AQI
21AQI
14th March 2025
22AQI
22AQI
15th March 2025
41AQI
41AQI
16th March 2025
33AQI
33AQI
17th March 2025
21AQI
21AQI
18th March 2025
18AQI
18AQI
19th March 2025
21AQI
21AQI
20th March 2025
21AQI
21AQI
21st March 2025
22AQI
22AQI
22nd March 2025
28AQI
28AQI
23rd March 2025
25AQI
25AQI
24th March 2025
25AQI
25AQI
25th March 2025
27AQI
27AQI
26th March 2025
26AQI
26AQI
27th March 2025
22AQI
22AQI
28th March 2025
24AQI
24AQI
29th March 2025
17AQI
17AQI
30th March 2025
21AQI
21AQI
31st March 2025
19AQI
19AQI
1st April 2025
18AQI
18AQI
2nd April 2025
18AQI
18AQI
3rd April 2025
23AQI
23AQI
4th April 2025
21AQI
21AQI
5th April 2025
22AQI
22AQI
6th April 2025
25AQI
25AQI
7th April 2025
18AQI
18AQI
8th April 2025
15AQI
15AQI
9th April 2025
23AQI
23AQI
10th April 2025
29AQI
29AQI
11th April 2025
21AQI
21AQI
12th April 2025
26AQI
26AQI
13th April 2025
31AQI
31AQI
14th April 2025
30AQI
30AQI
15th April 2025
39AQI
39AQI
16th April 2025
38AQI
38AQI
17th April 2025
34AQI
34AQI
18th April 2025
33AQI
33AQI
19th April 2025
34AQI
34AQI
20th April 2025
32AQI
32AQI
21st April 2025
29AQI
29AQI
22nd April 2025
31AQI
31AQI
23rd April 2025
32AQI
32AQI
24th April 2025
36AQI
36AQI
25th April 2025
23AQI
23AQI
26th April 2025
17AQI
17AQI
27th April 2025
14AQI
14AQI
28th April 2025
28AQI
28AQI
29th April 2025
39AQI
39AQI
30th April 2025
43AQI
43AQI
1st May 2025
44AQI
44AQI
2nd May 2025
40AQI
40AQI
3rd May 2025
20AQI
20AQI
4th May 2025
29AQI
29AQI
5th May 2025
39AQI
39AQI
6th May 2025
35AQI
35AQI
7th May 2025
50AQI
50AQI
8th May 2025
48AQI
48AQI
9th May 2025
33AQI
33AQI
10th May 2025
31AQI
31AQI
11th May 2025
25AQI
25AQI
12th May 2025
23AQI
23AQI
13th May 2025
17AQI
17AQI
14th May 2025
21AQI
21AQI
15th May 2025
31AQI
31AQI
16th May 2025
32AQI
32AQI
17th May 2025
32AQI
32AQI
18th May 2025
28AQI
28AQI
19th May 2025
33AQI
33AQI
20th May 2025
23AQI
23AQI
21st May 2025
34AQI
34AQI
22nd May 2025
31AQI
31AQI
23rd May 2025
24AQI
24AQI
24th May 2025
31AQI
31AQI
25th May 2025
26AQI
26AQI
26th May 2025
20AQI
20AQI
27th May 2025
24AQI
24AQI
28th May 2025
33AQI
33AQI
29th May 2025
26AQI
26AQI
30th May 2025
42AQI
42AQI
31st May 2025
43AQI
43AQI
1st June 2025
41AQI
41AQI
2nd June 2025
49AQI
49AQI
3rd June 2025
40AQI
40AQI
4th June 2025
47AQI
47AQI
5th June 2025
50AQI
50AQI
6th June 2025
34AQI
34AQI
7th June 2025
36AQI
36AQI
8th June 2025
31AQI
31AQI
9th June 2025
29AQI
29AQI
10th June 2025
37AQI
37AQI
11th June 2025
42AQI
42AQI
12th June 2025
48AQI
48AQI
13th June 2025
40AQI
40AQI
14th June 2025
30AQI
30AQI
15th June 2025
29AQI
29AQI
16th June 2025
35AQI
35AQI
17th June 2025
34AQI
34AQI
18th June 2025
39AQI
39AQI
19th June 2025
39AQI
39AQI
20th June 2025
42AQI
42AQI
21st June 2025
35AQI
35AQI
22nd June 2025
30AQI
30AQI
23rd June 2025
28AQI
28AQI
24th June 2025
28AQI
28AQI
25th June 2025
26AQI
26AQI
26th June 2025
31AQI
31AQI
27th June 2025
36AQI
36AQI
28th June 2025
45AQI
45AQI
29th June 2025
35AQI
35AQI
30th June 2025
31AQI
31AQI
1st July 2025
33AQI
33AQI
2nd July 2025
39AQI
39AQI
3rd July 2025
46AQI
46AQI
4th July 2025
29AQI
29AQI
5th July 2025
45AQI
45AQI
6th July 2025
34AQI
34AQI
7th July 2025
32AQI
32AQI
8th July 2025
33AQI
33AQI
9th July 2025
27AQI
27AQI
10th July 2025
37AQI
37AQI
11th July 2025
56AQI
56AQI
12th July 2025
58AQI
58AQI
13th July 2025
46AQI
46AQI
14th July 2025
39AQI
39AQI
15th July 2025
44AQI
44AQI
16th July 2025
35AQI
35AQI
17th July 2025
28AQI
28AQI
18th July 2025
28AQI
28AQI
19th July 2025
31AQI
31AQI
20th July 2025
27AQI
27AQI
21st July 2025
28AQI
28AQI
22nd July 2025
18AQI
18AQI
23rd July 2025
20AQI
20AQI
24th July 2025
22AQI
22AQI
25th July 2025
18AQI
18AQI
26th July 2025
19AQI
19AQI
27th July 2025
18AQI
18AQI
28th July 2025
20AQI
20AQI
29th July 2025
27AQI
27AQI
30th July 2025
26AQI
26AQI
31st July 2025
35AQI
35AQI
1st August 2025
37AQI
37AQI
2nd August 2025
33AQI
33AQI
3rd August 2025
31AQI
31AQI
4th August 2025
32AQI
32AQI
5th August 2025
28AQI
28AQI
6th August 2025
31AQI
31AQI
7th August 2025
33AQI
33AQI
8th August 2025
35AQI
35AQI
9th August 2025
44AQI
44AQI
10th August 2025
42AQI
42AQI
11th August 2025
41AQI
41AQI
12th August 2025
46AQI
46AQI
13th August 2025
38AQI
38AQI
14th August 2025
35AQI
35AQI
15th August 2025
40AQI
40AQI
16th August 2025
28AQI
28AQI
17th August 2025
17AQI
17AQI
18th August 2025
27AQI
27AQI
19th August 2025
33AQI
33AQI
20th August 2025
38AQI
38AQI
21st August 2025
50AQI
50AQI
22nd August 2025
52AQI
52AQI
23rd August 2025
59AQI
59AQI
24th August 2025
50AQI
50AQI
25th August 2025
46AQI
46AQI
26th August 2025
50AQI
50AQI
27th August 2025
47AQI
47AQI
28th August 2025
51AQI
51AQI
29th August 2025
40AQI
40AQI
30th August 2025
39AQI
39AQI
31st August 2025
34AQI
34AQI
1st September 2025
36AQI
36AQI
2nd September 2025
51AQI
51AQI
3rd September 2025
50AQI
50AQI
4th September 2025
43AQI
43AQI
5th September 2025
49AQI
49AQI
6th September 2025
46AQI
46AQI
7th September 2025
33AQI
33AQI
8th September 2025
27AQI
27AQI
9th September 2025
25AQI
25AQI
10th September 2025
19AQI
19AQI
11th September 2025
30AQI
30AQI
12th September 2025
39AQI
39AQI
13th September 2025
44AQI
44AQI
14th September 2025
30AQI
30AQI
15th September 2025
30AQI
30AQI
16th September 2025
43AQI
43AQI
17th September 2025
50AQI
50AQI
18th September 2025
54AQI
54AQI
19th September 2025
52AQI
52AQI
20th September 2025
50AQI
50AQI
21st September 2025
38AQI
38AQI
22nd September 2025
37AQI
37AQI
23rd September 2025
45AQI
45AQI
24th September 2025
49AQI
49AQI
25th September 2025
41AQI
41AQI
26th September 2025
43AQI
43AQI
27th September 2025
56AQI
56AQI
28th September 2025
35AQI
35AQI
29th September 2025
38AQI
38AQI
30th September 2025
36AQI
36AQI
1st October 2025
41AQI
41AQI
2nd October 2025
27AQI
27AQI
3rd October 2025
34AQI
34AQI
4th October 2025
36AQI
36AQI
5th October 2025
48AQI
48AQI
6th October 2025
50AQI
50AQI
7th October 2025
61AQI
61AQI
8th October 2025
60AQI
60AQI
9th October 2025
47AQI
47AQI
10th October 2025
57AQI
57AQI
11th October 2025
42AQI
42AQI
12th October 2025
39AQI
39AQI
13th October 2025
47AQI
47AQI
14th October 2025
18AQI
18AQI
15th October 2025
21AQI
21AQI
16th October 2025
46AQI
46AQI
17th October 2025
54AQI
54AQI
18th October 2025
19th October 2025
20th October 2025
21st October 2025
22nd October 2025
23rd October 2025
24th October 2025
25th October 2025
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
44AQI
29AQI
25AQI
27AQI
31AQI
37AQI
32AQI
39AQI
41AQI
43AQI
No. of days
Jan.Feb.Mar.Apr.MayJun.Jul.Aug.Sep.Oct.Nov.Dec.Total Days
202534AQI
20
11
27
1
31
30
31
30
29
2
28
3
26
4
13
4
265
25
Highest AQI recorded in
January44AQI
Lowest AQI recorded in
March25AQI
202442AQI
9
6
12
29
28
3
31
17
11
18
13
24
6
19
12
187
51
Highest AQI recorded in
October52AQI
Lowest AQI recorded in
May31AQI
202339AQI
24
7
18
10
31
30
30
1
30
26
5
29
2
25
5
24
7
16
13
14
16
1
297
66
1
Highest AQI recorded in
December56AQI
Lowest AQI recorded in
May30AQI
202242AQI
8
21
1
18
4
31
29
1
30
1
30
22
1
2
22
7
23
8
17
12
1
15
16
246
72
2
Highest AQI recorded in
January62AQI
Lowest AQI recorded in
May32AQI
202145AQI
15
11
4
24
4
31
30
30
1
27
3
24
7
11
13
6
1
16
14
24
5
1
1
12
18
16
15
260
91
11
2
Highest AQI recorded in
August69AQI
Lowest AQI recorded in
March31AQI
202053AQI
13
20
18
30
31
15
9
3
4
5
13
9
3
13
12
3
2
13
17
7
24
165
75
15
9
Highest AQI recorded in
September91AQI
Lowest AQI recorded in
May31AQI
Most & Least Polluted Years Over the Last 6 Years
Most Polluted Year Recorded
2020(Avg.)
53AQILeast Polluted Year Recorded
2025(Avg.)
34AQIMerced's annual 2025 AQI (34) shows an average percentage change of -21.2% (improved AQI) compared to previous years: 2020 (53), 2021 (45), 2022 (42), 2023 (39), 2024 (42).
