Vallejo, 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
Vallejo, California, United States
2022
2023
2024
2025
2026
AQI
.
Days
AQI Trends: Highest and Lowest
Highest AQI recorded on
3rd Aug 2026
58AQILowest AQI recorded on
4th Aug 2023
12AQISame Day Analysis (12th August):
On this day, AQI across the 5 years varied significantly: 2026 ranks 1st highest AQI at 45 of Good air quality on the same day.
Day & Night AQI Trend: 12th Aug - 13th Aug 2026
Vallejo, California, United States
AQI
Day
Night
.
6 AM12th Aug 2026
8 PM
5 AM13th Aug 2026
Day time
Avg. Highest Time
12PM12th Aug
54AQI
Avg. Lowest Time
6AM12th Aug
34AQI
Night time
Avg. Highest Time
2AM13th Aug
56AQI
Avg. Lowest Time
3AM13th Aug
36AQI
In the last 24 hours,
Vallejo's AQI reached its highest point of 56 at 2 AM during the Night, while the lowest point, 34, was recorded at 6 AM during the Day between 12th Aug and 13th Aug 2026.
Day & Night AQI Trend : Jul - Aug 2026
Vallejo, California, United States
JulAug
15th - 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
15th Jul 2026306 AMAQI
15th Jul 2026267 AMAQI
15th Jul 2026268 AMAQI
15th Jul 2026259 AMAQI
15th Jul 20263010 AMAQI
15th Jul 20263011 AMAQI
15th Jul 20262812 PMAQI
15th Jul 2026321 PMAQI
15th Jul 2026302 PMAQI
15th Jul 2026283 PMAQI
15th Jul 2026314 PMAQI
15th Jul 2026305 PMAQI
15th Jul 2026326 PMAQI
15th Jul 2026307 PMAQI
15th Jul 2026288 PMAQI
15th Jul 2026269 PMAQI
15th Jul 20262410 PMAQI
15th Jul 20262611 PMAQI
16th Jul 20262412 AMAQI
16th Jul 2026281 AMAQI
16th Jul 2026302 AMAQI
16th Jul 2026303 AMAQI
16th Jul 2026304 AMAQI
16th Jul 2026315 AMAQI
24°C16/35°C
16th Jul 2026306 AMAQI
16th Jul 2026307 AMAQI
16th Jul 2026308 AMAQI
16th Jul 2026329 AMAQI
16th Jul 20263210 AMAQI
16th Jul 20262911 AMAQI
16th Jul 20263112 PMAQI
16th Jul 2026301 PMAQI
16th Jul 2026312 PMAQI
16th Jul 2026303 PMAQI
16th Jul 2026274 PMAQI
16th Jul 2026305 PMAQI
16th Jul 2026306 PMAQI
16th Jul 2026287 PMAQI
16th Jul 2026288 PMAQI
16th Jul 2026269 PMAQI
16th Jul 20262610 PMAQI
16th Jul 20262611 PMAQI
17th Jul 20261912 AMAQI
17th Jul 2026201 AMAQI
17th Jul 2026462 AMAQI
17th Jul 2026463 AMAQI
17th Jul 2026484 AMAQI
17th Jul 2026465 AMAQI
21°C14/31°C
17th Jul 2026426 AMAQI
17th Jul 2026427 AMAQI
17th Jul 2026428 AMAQI
17th Jul 2026469 AMAQI
17th Jul 20264210 AMAQI
17th Jul 20264811 AMAQI
17th Jul 20264812 PMAQI
17th Jul 2026471 PMAQI
17th Jul 2026482 PMAQI
17th Jul 2026513 PMAQI
17th Jul 2026424 PMAQI
17th Jul 2026465 PMAQI
17th Jul 2026406 PMAQI
17th Jul 2026427 PMAQI
17th Jul 2026488 PMAQI
17th Jul 2026469 PMAQI
17th Jul 20264910 PMAQI
17th Jul 20265011 PMAQI
18th Jul 20263612 AMAQI
18th Jul 2026501 AMAQI
18th Jul 2026502 AMAQI
18th Jul 2026363 AMAQI
18th Jul 2026464 AMAQI
18th Jul 2026445 AMAQI
19°C13/29°C
18th Jul 2026446 AMAQI
18th Jul 2026447 AMAQI
18th Jul 2026468 AMAQI
18th Jul 2026469 AMAQI
18th Jul 20265210 AMAQI
18th Jul 20264611 AMAQI
18th Jul 20266212 PMAQI
18th Jul 2026741 PMAQI
18th Jul 2026562 PMAQI
18th Jul 2026503 PMAQI
18th Jul 2026384 PMAQI
18th Jul 2026515 PMAQI
18th Jul 2026486 PMAQI
18th Jul 2026527 PMAQI
18th Jul 2026508 PMAQI
18th Jul 2026529 PMAQI
18th Jul 20264210 PMAQI
18th Jul 20264611 PMAQI
19th Jul 20264612 AMAQI
19th Jul 2026441 AMAQI
19th Jul 2026502 AMAQI
19th Jul 2026463 AMAQI
19th Jul 2026424 AMAQI
19th Jul 2026485 AMAQI
17°C13/26°C
19th Jul 2026366 AMAQI
19th Jul 2026447 AMAQI
19th Jul 2026448 AMAQI
19th Jul 2026369 AMAQI
19th Jul 20264410 AMAQI
19th Jul 20264811 AMAQI
19th Jul 20265012 PMAQI
19th Jul 2026341 PMAQI
19th Jul 2026442 PMAQI
19th Jul 2026343 PMAQI
19th Jul 2026514 PMAQI
19th Jul 2026385 PMAQI
19th Jul 2026406 PMAQI
19th Jul 2026587 PMAQI
19th Jul 2026568 PMAQI
19th Jul 2026469 PMAQI
19th Jul 20265010 PMAQI
19th Jul 20264811 PMAQI
20th Jul 20264612 AMAQI
20th Jul 2026461 AMAQI
20th Jul 2026502 AMAQI
20th Jul 2026423 AMAQI
20th Jul 2026424 AMAQI
20th Jul 2026565 AMAQI
17°C13/26°C
20th Jul 2026546 AMAQI
20th Jul 2026487 AMAQI
20th Jul 2026488 AMAQI
20th Jul 2026429 AMAQI
20th Jul 20264610 AMAQI
20th Jul 20265011 AMAQI
20th Jul 20265812 PMAQI
20th Jul 2026571 PMAQI
20th Jul 2026562 PMAQI
20th Jul 2026583 PMAQI
20th Jul 2026514 PMAQI
20th Jul 2026465 PMAQI
20th Jul 2026596 PMAQI
20th Jul 2026427 PMAQI
20th Jul 2026489 PMAQI
20th Jul 20264610 PMAQI
20th Jul 20261911 PMAQI
21st Jul 20261812 AMAQI
21st Jul 2026461 AMAQI
21st Jul 2026462 AMAQI
21st Jul 2026523 AMAQI
21st Jul 2026184 AMAQI
21st Jul 2026225 AMAQI
19°C14/27°C
21st Jul 2026426 AMAQI
21st Jul 2026447 AMAQI
21st Jul 2026468 AMAQI
21st Jul 2026549 AMAQI
21st Jul 20265610 AMAQI
21st Jul 20264611 AMAQI
21st Jul 20265012 PMAQI
21st Jul 2026501 PMAQI
21st Jul 2026462 PMAQI
21st Jul 2026493 PMAQI
21st Jul 2026494 PMAQI
21st Jul 2026445 PMAQI
21st Jul 2026366 PMAQI
21st Jul 2026427 PMAQI
21st Jul 2026478 PMAQI
21st Jul 2026589 PMAQI
21st Jul 20266510 PMAQI
21st Jul 20266011 PMAQI
22nd Jul 20265112 AMAQI
22nd Jul 2026381 AMAQI
22nd Jul 2026462 AMAQI
22nd Jul 2026503 AMAQI
22nd Jul 2026464 AMAQI
22nd Jul 2026225 AMAQI
23°C16/32°C
22nd Jul 2026426 AMAQI
22nd Jul 2026397 AMAQI
22nd Jul 2026468 AMAQI
22nd Jul 2026469 AMAQI
22nd Jul 20264610 AMAQI
22nd Jul 20265011 AMAQI
22nd Jul 20265012 PMAQI
22nd Jul 2026521 PMAQI
22nd Jul 2026362 PMAQI
22nd Jul 2026503 PMAQI
22nd Jul 2026564 PMAQI
22nd Jul 2026465 PMAQI
22nd Jul 2026306 PMAQI
22nd Jul 2026717 PMAQI
22nd Jul 2026548 PMAQI
22nd Jul 2026529 PMAQI
22nd Jul 20265010 PMAQI
22nd Jul 20261911 PMAQI
23rd Jul 20262012 AMAQI
23rd Jul 2026231 AMAQI
23rd Jul 2026202 AMAQI
23rd Jul 2026423 AMAQI
23rd Jul 2026204 AMAQI
23rd Jul 2026245 AMAQI
20°C16/25°C
23rd Jul 2026226 AMAQI
23rd Jul 2026247 AMAQI
23rd Jul 2026478 AMAQI
23rd Jul 2026569 AMAQI
23rd Jul 20265210 AMAQI
23rd Jul 20262011 AMAQI
23rd Jul 20261812 PMAQI
23rd Jul 2026461 PMAQI
23rd Jul 2026732 PMAQI
23rd Jul 2026463 PMAQI
23rd Jul 2026714 PMAQI
23rd Jul 2026275 PMAQI
23rd Jul 2026526 PMAQI
23rd Jul 2026527 PMAQI
23rd Jul 2026668 PMAQI
23rd Jul 2026559 PMAQI
23rd Jul 20265210 PMAQI
23rd Jul 20265011 PMAQI
24th Jul 20263812 AMAQI
24th Jul 2026521 AMAQI
24th Jul 2026592 AMAQI
24th Jul 2026503 AMAQI
24th Jul 2026484 AMAQI
24th Jul 2026675 AMAQI
20°C15/29°C
24th Jul 2026486 AMAQI
24th Jul 2026427 AMAQI
24th Jul 2026738 AMAQI
24th Jul 2026659 AMAQI
24th Jul 20265410 AMAQI
24th Jul 20265511 AMAQI
24th Jul 20265412 PMAQI
24th Jul 2026381 PMAQI
24th Jul 2026522 PMAQI
24th Jul 2026513 PMAQI
24th Jul 2026504 PMAQI
24th Jul 2026405 PMAQI
24th Jul 2026226 PMAQI
24th Jul 2026517 PMAQI
24th Jul 2026528 PMAQI
24th Jul 2026529 PMAQI
24th Jul 20265010 PMAQI
24th Jul 20265011 PMAQI
25th Jul 20264612 AMAQI
25th Jul 2026521 AMAQI
25th Jul 2026462 AMAQI
25th Jul 2026463 AMAQI
25th Jul 2026464 AMAQI
25th Jul 2026565 AMAQI
21°C14/31°C
25th Jul 2026426 AMAQI
25th Jul 2026467 AMAQI
25th Jul 2026468 AMAQI
25th Jul 2026469 AMAQI
25th Jul 20264810 AMAQI
25th Jul 20264811 AMAQI
25th Jul 20263812 PMAQI
25th Jul 2026481 PMAQI
25th Jul 2026482 PMAQI
25th Jul 2026463 PMAQI
25th Jul 2026464 PMAQI
25th Jul 2026465 PMAQI
25th Jul 2026256 PMAQI
25th Jul 2026467 PMAQI
25th Jul 2026528 PMAQI
25th Jul 2026549 PMAQI
25th Jul 20264610 PMAQI
25th Jul 20264611 PMAQI
26th Jul 20264912 AMAQI
26th Jul 2026481 AMAQI
26th Jul 2026462 AMAQI
26th Jul 2026513 AMAQI
26th Jul 2026384 AMAQI
26th Jul 2026485 AMAQI
21°C15/30°C
26th Jul 2026506 AMAQI
26th Jul 2026487 AMAQI
26th Jul 2026468 AMAQI
26th Jul 2026229 AMAQI
26th Jul 20264210 AMAQI
26th Jul 20264611 AMAQI
26th Jul 20265012 PMAQI
26th Jul 2026461 PMAQI
26th Jul 2026402 PMAQI
26th Jul 2026503 PMAQI
26th Jul 2026504 PMAQI
26th Jul 2026255 PMAQI
26th Jul 2026326 PMAQI
26th Jul 2026727 PMAQI
26th Jul 2026608 PMAQI
26th Jul 2026569 PMAQI
26th Jul 20265310 PMAQI
26th Jul 20265611 PMAQI
27th Jul 20265912 AMAQI
27th Jul 2026501 AMAQI
27th Jul 2026482 AMAQI
27th Jul 2026513 AMAQI
27th Jul 2026364 AMAQI
27th Jul 2026465 AMAQI
21°C15/30°C
27th Jul 2026506 AMAQI
27th Jul 2026587 AMAQI
27th Jul 2026468 AMAQI
27th Jul 2026469 AMAQI
27th Jul 20265010 AMAQI
27th Jul 20266011 AMAQI
27th Jul 20265412 PMAQI
27th Jul 2026561 PMAQI
27th Jul 2026462 PMAQI
27th Jul 2026523 PMAQI
27th Jul 2026524 PMAQI
27th Jul 2026385 PMAQI
27th Jul 2026306 PMAQI
27th Jul 2026447 PMAQI
27th Jul 2026258 PMAQI
27th Jul 2026389 PMAQI
27th Jul 20263410 PMAQI
27th Jul 20263811 PMAQI
28th Jul 20264912 AMAQI
28th Jul 2026461 AMAQI
28th Jul 2026462 AMAQI
28th Jul 2026463 AMAQI
28th Jul 2026324 AMAQI
28th Jul 2026425 AMAQI
20°C14/30°C
28th Jul 2026386 AMAQI
28th Jul 2026527 AMAQI
28th Jul 2026448 AMAQI
28th Jul 2026469 AMAQI
28th Jul 20265110 AMAQI
28th Jul 20265611 AMAQI
28th Jul 20265012 PMAQI
28th Jul 2026441 PMAQI
28th Jul 2026402 PMAQI
28th Jul 2026423 PMAQI
28th Jul 2026424 PMAQI
28th Jul 2026485 PMAQI
28th Jul 2026366 PMAQI
28th Jul 2026537 PMAQI
28th Jul 2026548 PMAQI
28th Jul 2026519 PMAQI
28th Jul 20264610 PMAQI
28th Jul 20265011 PMAQI
29th Jul 20264612 AMAQI
29th Jul 2026481 AMAQI
29th Jul 2026462 AMAQI
29th Jul 2026493 AMAQI
29th Jul 2026504 AMAQI
29th Jul 2026505 AMAQI
21°C14/32°C
29th Jul 2026446 AMAQI
29th Jul 2026507 AMAQI
29th Jul 2026528 AMAQI
29th Jul 2026509 AMAQI
29th Jul 20264210 AMAQI
29th Jul 20263811 AMAQI
29th Jul 20264412 PMAQI
29th Jul 2026481 PMAQI
29th Jul 2026502 PMAQI
29th Jul 2026513 PMAQI
29th Jul 2026314 PMAQI
29th Jul 2026505 PMAQI
29th Jul 2026466 PMAQI
29th Jul 2026507 PMAQI
29th Jul 2026328 PMAQI
29th Jul 2026429 PMAQI
29th Jul 20264410 PMAQI
29th Jul 20264411 PMAQI
30th Jul 20264612 AMAQI
30th Jul 2026441 AMAQI
30th Jul 2026402 AMAQI
30th Jul 2026423 AMAQI
30th Jul 2026424 AMAQI
30th Jul 2026465 AMAQI
21°C14/30°C
30th Jul 2026446 AMAQI
30th Jul 2026447 AMAQI
30th Jul 2026448 AMAQI
30th Jul 2026449 AMAQI
30th Jul 20264410 AMAQI
30th Jul 20264211 AMAQI
30th Jul 20264412 PMAQI
30th Jul 2026421 PMAQI
30th Jul 2026442 PMAQI
30th Jul 2026443 PMAQI
30th Jul 2026474 PMAQI
30th Jul 2026535 PMAQI
30th Jul 2026426 PMAQI
30th Jul 2026407 PMAQI
30th Jul 2026428 PMAQI
30th Jul 2026429 PMAQI
30th Jul 20264010 PMAQI
30th Jul 20265111 PMAQI
31st Jul 20265612 AMAQI
31st Jul 2026531 AMAQI
31st Jul 2026462 AMAQI
31st Jul 2026443 AMAQI
31st Jul 2026424 AMAQI
31st Jul 2026535 AMAQI
20°C14/30°C
31st Jul 2026526 AMAQI
31st Jul 2026587 AMAQI
31st Jul 2026528 AMAQI
31st Jul 2026589 AMAQI
31st Jul 20265110 AMAQI
31st Jul 20264811 AMAQI
31st Jul 20265012 PMAQI
31st Jul 2026511 PMAQI
31st Jul 2026582 PMAQI
31st Jul 2026633 PMAQI
31st Jul 2026604 PMAQI
31st Jul 2026595 PMAQI
31st Jul 2026576 PMAQI
31st Jul 2026547 PMAQI
31st Jul 2026538 PMAQI
31st Jul 2026489 PMAQI
31st Jul 20265010 PMAQI
31st Jul 20264611 PMAQI
1st Aug 20265012 AMAQI
1st Aug 2026471 AMAQI
1st Aug 2026462 AMAQI
1st Aug 2026463 AMAQI
1st Aug 2026494 AMAQI
1st Aug 2026465 AMAQI
20°C13/31°C
1st Aug 2026536 AMAQI
1st Aug 2026497 AMAQI
1st Aug 2026468 AMAQI
1st Aug 2026529 AMAQI
1st Aug 20264610 AMAQI
1st Aug 20264611 AMAQI
1st Aug 20264412 PMAQI
1st Aug 2026341 PMAQI
1st Aug 2026402 PMAQI
1st Aug 2026423 PMAQI
1st Aug 2026404 PMAQI
1st Aug 2026425 PMAQI
1st Aug 2026446 PMAQI
1st Aug 2026447 PMAQI
1st Aug 2026448 PMAQI
1st Aug 2026449 PMAQI
1st Aug 20264610 PMAQI
1st Aug 20264811 PMAQI
2nd Aug 20264412 AMAQI
2nd Aug 2026441 AMAQI
2nd Aug 2026382 AMAQI
2nd Aug 2026503 AMAQI
2nd Aug 2026484 AMAQI
2nd Aug 2026485 AMAQI
21°C13/33°C
2nd Aug 2026486 AMAQI
2nd Aug 2026487 AMAQI
2nd Aug 2026448 AMAQI
2nd Aug 2026449 AMAQI
2nd Aug 20265110 AMAQI
2nd Aug 20265511 AMAQI
2nd Aug 20265512 PMAQI
2nd Aug 2026531 PMAQI
2nd Aug 2026532 PMAQI
2nd Aug 2026543 PMAQI
2nd Aug 2026534 PMAQI
2nd Aug 2026555 PMAQI
2nd Aug 2026526 PMAQI
2nd Aug 2026517 PMAQI
2nd Aug 2026518 PMAQI
2nd Aug 2026509 PMAQI
2nd Aug 20265210 PMAQI
2nd Aug 20265311 PMAQI
3rd Aug 20265512 AMAQI
3rd Aug 2026561 AMAQI
3rd Aug 2026552 AMAQI
3rd Aug 2026563 AMAQI
3rd Aug 2026544 AMAQI
3rd Aug 2026545 AMAQI
23°C14/34°C
3rd Aug 2026566 AMAQI
3rd Aug 2026577 AMAQI
3rd Aug 2026588 AMAQI
3rd Aug 2026569 AMAQI
3rd Aug 20266010 AMAQI
3rd Aug 20266211 AMAQI
3rd Aug 20266612 PMAQI
3rd Aug 2026691 PMAQI
3rd Aug 2026672 PMAQI
3rd Aug 2026653 PMAQI
3rd Aug 2026624 PMAQI
3rd Aug 2026625 PMAQI
3rd Aug 2026606 PMAQI
3rd Aug 2026567 PMAQI
3rd Aug 2026538 PMAQI
3rd Aug 2026529 PMAQI
3rd Aug 20265410 PMAQI
3rd Aug 20265411 PMAQI
4th Aug 20265312 AMAQI
4th Aug 2026521 AMAQI
4th Aug 2026512 AMAQI
4th Aug 2026523 AMAQI
4th Aug 2026504 AMAQI
4th Aug 2026465 AMAQI
20°C13/31°C
4th Aug 2026486 AMAQI
4th Aug 2026467 AMAQI
4th Aug 2026448 AMAQI
4th Aug 2026429 AMAQI
4th Aug 20265110 AMAQI
4th Aug 20264611 AMAQI
4th Aug 20264812 PMAQI
4th Aug 2026531 PMAQI
4th Aug 2026512 PMAQI
4th Aug 2026463 PMAQI
4th Aug 2026484 PMAQI
4th Aug 2026445 PMAQI
4th Aug 2026466 PMAQI
4th Aug 2026447 PMAQI
4th Aug 2026488 PMAQI
4th Aug 2026469 PMAQI
4th Aug 20264410 PMAQI
4th Aug 20264911 PMAQI
5th Aug 20264412 AMAQI
5th Aug 2026421 AMAQI
5th Aug 2026442 AMAQI
5th Aug 2026403 AMAQI
5th Aug 2026404 AMAQI
5th Aug 2026445 AMAQI
18°C14/27°C
5th Aug 2026446 AMAQI
5th Aug 2026447 AMAQI
5th Aug 2026448 AMAQI
5th Aug 2026469 AMAQI
5th Aug 20264210 AMAQI
5th Aug 20264211 AMAQI
5th Aug 20264812 PMAQI
5th Aug 2026421 PMAQI
5th Aug 2026462 PMAQI
5th Aug 2026463 PMAQI
5th Aug 2026424 PMAQI
5th Aug 2026505 PMAQI
5th Aug 2026516 PMAQI
5th Aug 2026427 PMAQI
5th Aug 2026408 PMAQI
5th Aug 2026409 PMAQI
5th Aug 20264710 PMAQI
5th Aug 20265011 PMAQI
6th Aug 20264612 AMAQI
6th Aug 2026511 AMAQI
6th Aug 2026382 AMAQI
6th Aug 2026273 AMAQI
6th Aug 2026364 AMAQI
6th Aug 2026495 AMAQI
18°C13/27°C
6th Aug 2026536 AMAQI
6th Aug 2026467 AMAQI
6th Aug 2026528 AMAQI
6th Aug 2026569 AMAQI
6th Aug 20265110 AMAQI
6th Aug 20264611 AMAQI
6th Aug 20266412 PMAQI
6th Aug 2026601 PMAQI
6th Aug 2026562 PMAQI
6th Aug 2026563 PMAQI
6th Aug 2026384 PMAQI
6th Aug 2026465 PMAQI
6th Aug 2026426 PMAQI
6th Aug 2026497 PMAQI
6th Aug 2026488 PMAQI
6th Aug 2026489 PMAQI
6th Aug 20265210 PMAQI
6th Aug 20265111 PMAQI
7th Aug 20264212 AMAQI
7th Aug 2026421 AMAQI
7th Aug 2026502 AMAQI
7th Aug 2026483 AMAQI
7th Aug 2026484 AMAQI
7th Aug 2026465 AMAQI
19°C13/28°C
7th Aug 2026526 AMAQI
7th Aug 2026487 AMAQI
7th Aug 2026468 AMAQI
7th Aug 2026409 AMAQI
7th Aug 20264610 AMAQI
7th Aug 20264611 AMAQI
7th Aug 20264812 PMAQI
7th Aug 2026511 PMAQI
7th Aug 2026292 PMAQI
7th Aug 2026383 PMAQI
7th Aug 2026524 PMAQI
7th Aug 2026405 PMAQI
7th Aug 2026426 PMAQI
7th Aug 2026427 PMAQI
7th Aug 2026488 PMAQI
7th Aug 2026569 PMAQI
7th Aug 20264410 PMAQI
7th Aug 20264411 PMAQI
8th Aug 20264612 AMAQI
8th Aug 2026481 AMAQI
8th Aug 2026482 AMAQI
8th Aug 2026483 AMAQI
8th Aug 2026464 AMAQI
8th Aug 2026445 AMAQI
19°C14/28°C
8th Aug 2026446 AMAQI
8th Aug 2026527 AMAQI
8th Aug 2026548 AMAQI
8th Aug 2026429 AMAQI
8th Aug 20265010 AMAQI
8th Aug 20265511 AMAQI
8th Aug 20265512 PMAQI
8th Aug 2026501 PMAQI
8th Aug 2026462 PMAQI
8th Aug 2026443 PMAQI
8th Aug 2026444 PMAQI
8th Aug 2026365 PMAQI
8th Aug 2026446 PMAQI
8th Aug 2026447 PMAQI
8th Aug 2026448 PMAQI
8th Aug 2026469 PMAQI
8th Aug 20265110 PMAQI
8th Aug 20265211 PMAQI
9th Aug 20264612 AMAQI
9th Aug 2026441 AMAQI
9th Aug 2026442 AMAQI
9th Aug 2026483 AMAQI
9th Aug 2026504 AMAQI
9th Aug 2026485 AMAQI
18°C13/27°C
9th Aug 2026446 AMAQI
9th Aug 2026467 AMAQI
9th Aug 2026368 AMAQI
9th Aug 2026449 AMAQI
9th Aug 20264410 AMAQI
9th Aug 20264711 AMAQI
9th Aug 20265212 PMAQI
9th Aug 2026481 PMAQI
9th Aug 2026462 PMAQI
9th Aug 2026543 PMAQI
9th Aug 2026554 PMAQI
9th Aug 2026485 PMAQI
9th Aug 2026466 PMAQI
9th Aug 2026467 PMAQI
9th Aug 2026478 PMAQI
9th Aug 2026429 PMAQI
9th Aug 20264210 PMAQI
9th Aug 20265111 PMAQI
10th Aug 20264812 AMAQI
10th Aug 2026461 AMAQI
10th Aug 2026462 AMAQI
10th Aug 2026443 AMAQI
10th Aug 2026464 AMAQI
10th Aug 2026445 AMAQI
19°C14/30°C
10th Aug 2026466 AMAQI
10th Aug 2026487 AMAQI
10th Aug 2026468 AMAQI
10th Aug 2026469 AMAQI
10th Aug 20264810 AMAQI
10th Aug 20265311 AMAQI
10th Aug 20265112 PMAQI
10th Aug 2026511 PMAQI
10th Aug 2026462 PMAQI
10th Aug 2026423 PMAQI
10th Aug 2026444 PMAQI
10th Aug 2026485 PMAQI
10th Aug 2026486 PMAQI
10th Aug 2026517 PMAQI
10th Aug 2026498 PMAQI
10th Aug 2026489 PMAQI
10th Aug 20264610 PMAQI
10th Aug 20264611 PMAQI
11th Aug 20264412 AMAQI
11th Aug 2026461 AMAQI
11th Aug 2026462 AMAQI
11th Aug 2026483 AMAQI
11th Aug 2026504 AMAQI
11th Aug 2026495 AMAQI
17°C13/25°C
11th Aug 2026466 AMAQI
11th Aug 2026427 AMAQI
11th Aug 2026408 AMAQI
11th Aug 2026429 AMAQI
11th Aug 20264210 AMAQI
11th Aug 20264211 AMAQI
11th Aug 20264012 PMAQI
11th Aug 2026481 PMAQI
11th Aug 2026522 PMAQI
11th Aug 2026513 PMAQI
11th Aug 2026564 PMAQI
11th Aug 2026425 PMAQI
11th Aug 2026386 PMAQI
11th Aug 2026507 PMAQI
11th Aug 2026388 PMAQI
11th Aug 2026469 PMAQI
11th Aug 20264610 PMAQI
11th Aug 20262711 PMAQI
12th Aug 20265012 AMAQI
12th Aug 2026311 AMAQI
12th Aug 2026342 AMAQI
12th Aug 2026343 AMAQI
12th Aug 2026464 AMAQI
12th Aug 2026505 AMAQI
17°C13/25°C
12th Aug 2026346 AMAQI
12th Aug 2026497 AMAQI
12th Aug 2026478 AMAQI
12th Aug 2026469 AMAQI
12th Aug 20264410 AMAQI
12th Aug 20264911 AMAQI
12th Aug 20265412 PMAQI
12th Aug 2026421 PMAQI
12th Aug 2026482 PMAQI
12th Aug 2026493 PMAQI
12th Aug 2026504 PMAQI
12th Aug 2026465 PMAQI
12th Aug 2026486 PMAQI
12th Aug 2026467 PMAQI
12th Aug 2026428 PMAQI
12th Aug 2026479 PMAQI
12th Aug 20264610 PMAQI
12th Aug 20264611 PMAQI
13th Aug 20264612 AMAQI
13th Aug 2026521 AMAQI
13th Aug 2026562 AMAQI
13th Aug 2026363 AMAQI
13th Aug 2026444 AMAQI
13th Aug 2026535 AMAQI
17°C14/24°C
13th Aug 2026526 AMAQI
6 AM13th Aug 2026517 AMAQI
13th Aug 2026548 AMAQI
13th Aug 2026559 AMAQI
13th Aug 20265210 AMAQI
13th Aug 20265011 AMAQI
13th Aug 20265212 PMAQI
13th Aug 2026561 PMAQI
1 PM13th Aug 2026602 PMAQI
13th Aug 2026583 PMAQI
13th Aug 2026564 PMAQI
13th Aug 2026355 PMAQI
13th Aug 2026326 PMAQI
13th Aug 2026547 PMAQI
13th Aug 2026548 PMAQI
8 PM1 AM
5 AM
17°C14/21°C
Day time
Avg. Highest Time
12 PM - 4 PM
48AQI
5 hours / Day
150 hours / Month
Avg. Lowest Time
6 PM
42AQI
1 hours / Day
30 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 12 PM to 4 PM (Avg. 48), while the lowest AQI was between 6 PM to 6 PM (Avg. 42).
Night time
Avg. Highest Time
9 PM - 11 PM
46AQI
3 hours / Day
90 hours / Month
Avg. Lowest Time
4 AM
42AQI
1 hours / Day
30 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 9 PM to 11 PM (Avg. 46), while the lowest AQI was between 4 AM to 4 AM (Avg. 42).
2026 Days Vs Air Quality
Vallejo, California, United States
2026
91%
201
9%
20
Total number of days with different AQI categories in last 225 days in 2026 (140 days remaining)
Good
201 DaysModerate
20 DaysPoor
0 DaysUnhealthy
0 DaysSevere
0 DaysHazardous
0 DaysUnder WHO’s Safe Air Quality Limits: 91%
Health Risk Level:
Very Low
In 2026, 91% 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
Vallejo, California, United States
AQI levels in 2026
AQI (US)
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 2026
-1th undefined 2026
-1th undefined 2026
-1th undefined 2026
1st January 2026
16AQI (US)
16AQI (US)
2nd January 2026
12AQI (US)
12AQI (US)
3rd January 2026
16AQI (US)
16AQI (US)
4th January 2026
17AQI (US)
17AQI (US)
5th January 2026
20AQI (US)
20AQI (US)
6th January 2026
14AQI (US)
14AQI (US)
7th January 2026
23AQI (US)
23AQI (US)
8th January 2026
22AQI (US)
22AQI (US)
9th January 2026
13AQI (US)
13AQI (US)
10th January 2026
36AQI (US)
36AQI (US)
11th January 2026
40AQI (US)
40AQI (US)
12th January 2026
54AQI (US)
54AQI (US)
13th January 2026
59AQI (US)
59AQI (US)
14th January 2026
66AQI (US)
66AQI (US)
15th January 2026
77AQI (US)
77AQI (US)
16th January 2026
67AQI (US)
67AQI (US)
17th January 2026
72AQI (US)
72AQI (US)
18th January 2026
62AQI (US)
62AQI (US)
19th January 2026
61AQI (US)
61AQI (US)
20th January 2026
35AQI (US)
35AQI (US)
21st January 2026
44AQI (US)
44AQI (US)
22nd January 2026
47AQI (US)
47AQI (US)
23rd January 2026
51AQI (US)
51AQI (US)
24th January 2026
46AQI (US)
46AQI (US)
25th January 2026
44AQI (US)
44AQI (US)
26th January 2026
45AQI (US)
45AQI (US)
27th January 2026
43AQI (US)
43AQI (US)
28th January 2026
49AQI (US)
49AQI (US)
29th January 2026
55AQI (US)
55AQI (US)
30th January 2026
51AQI (US)
51AQI (US)
31st January 2026
38AQI (US)
38AQI (US)
1st February 2026
44AQI (US)
44AQI (US)
2nd February 2026
48AQI (US)
48AQI (US)
3rd February 2026
48AQI (US)
48AQI (US)
4th February 2026
47AQI (US)
47AQI (US)
5th February 2026
47AQI (US)
47AQI (US)
6th February 2026
42AQI (US)
42AQI (US)
7th February 2026
36AQI (US)
36AQI (US)
8th February 2026
46AQI (US)
46AQI (US)
9th February 2026
48AQI (US)
48AQI (US)
10th February 2026
46AQI (US)
46AQI (US)
11th February 2026
46AQI (US)
46AQI (US)
12th February 2026
48AQI (US)
48AQI (US)
13th February 2026
52AQI (US)
52AQI (US)
14th February 2026
51AQI (US)
51AQI (US)
15th February 2026
42AQI (US)
42AQI (US)
16th February 2026
45AQI (US)
45AQI (US)
17th February 2026
50AQI (US)
50AQI (US)
18th February 2026
44AQI (US)
44AQI (US)
19th February 2026
45AQI (US)
45AQI (US)
20th February 2026
42AQI (US)
42AQI (US)
21st February 2026
36AQI (US)
36AQI (US)
22nd February 2026
36AQI (US)
36AQI (US)
23rd February 2026
40AQI (US)
40AQI (US)
24th February 2026
44AQI (US)
44AQI (US)
25th February 2026
43AQI (US)
43AQI (US)
26th February 2026
34AQI (US)
34AQI (US)
27th February 2026
32AQI (US)
32AQI (US)
28th February 2026
34AQI (US)
34AQI (US)
1st March 2026
40AQI (US)
40AQI (US)
2nd March 2026
52AQI (US)
52AQI (US)
3rd March 2026
44AQI (US)
44AQI (US)
4th March 2026
44AQI (US)
44AQI (US)
5th March 2026
39AQI (US)
39AQI (US)
6th March 2026
36AQI (US)
36AQI (US)
7th March 2026
35AQI (US)
35AQI (US)
8th March 2026
34AQI (US)
34AQI (US)
9th March 2026
35AQI (US)
35AQI (US)
10th March 2026
33AQI (US)
33AQI (US)
11th March 2026
37AQI (US)
37AQI (US)
12th March 2026
37AQI (US)
37AQI (US)
13th March 2026
36AQI (US)
36AQI (US)
14th March 2026
33AQI (US)
33AQI (US)
15th March 2026
33AQI (US)
33AQI (US)
16th March 2026
35AQI (US)
35AQI (US)
17th March 2026
33AQI (US)
33AQI (US)
18th March 2026
32AQI (US)
32AQI (US)
19th March 2026
32AQI (US)
32AQI (US)
20th March 2026
35AQI (US)
35AQI (US)
21st March 2026
32AQI (US)
32AQI (US)
22nd March 2026
32AQI (US)
32AQI (US)
23rd March 2026
37AQI (US)
37AQI (US)
24th March 2026
38AQI (US)
38AQI (US)
25th March 2026
32AQI (US)
32AQI (US)
26th March 2026
33AQI (US)
33AQI (US)
27th March 2026
32AQI (US)
32AQI (US)
28th March 2026
32AQI (US)
32AQI (US)
29th March 2026
27AQI (US)
27AQI (US)
30th March 2026
28AQI (US)
28AQI (US)
31st March 2026
26AQI (US)
26AQI (US)
1st April 2026
34AQI (US)
34AQI (US)
2nd April 2026
33AQI (US)
33AQI (US)
3rd April 2026
28AQI (US)
28AQI (US)
4th April 2026
27AQI (US)
27AQI (US)
5th April 2026
26AQI (US)
26AQI (US)
6th April 2026
30AQI (US)
30AQI (US)
7th April 2026
29AQI (US)
29AQI (US)
8th April 2026
37AQI (US)
37AQI (US)
9th April 2026
29AQI (US)
29AQI (US)
10th April 2026
33AQI (US)
33AQI (US)
11th April 2026
35AQI (US)
35AQI (US)
12th April 2026
31AQI (US)
31AQI (US)
13th April 2026
35AQI (US)
35AQI (US)
14th April 2026
35AQI (US)
35AQI (US)
15th April 2026
31AQI (US)
31AQI (US)
16th April 2026
32AQI (US)
32AQI (US)
17th April 2026
18th April 2026
32AQI (US)
32AQI (US)
19th April 2026
31AQI (US)
31AQI (US)
20th April 2026
29AQI (US)
29AQI (US)
21st April 2026
30AQI (US)
30AQI (US)
22nd April 2026
23rd April 2026
27AQI (US)
27AQI (US)
24th April 2026
28AQI (US)
28AQI (US)
25th April 2026
29AQI (US)
29AQI (US)
26th April 2026
32AQI (US)
32AQI (US)
27th April 2026
28AQI (US)
28AQI (US)
28th April 2026
24AQI (US)
24AQI (US)
29th April 2026
24AQI (US)
24AQI (US)
30th April 2026
26AQI (US)
26AQI (US)
1st May 2026
27AQI (US)
27AQI (US)
2nd May 2026
24AQI (US)
24AQI (US)
3rd May 2026
22AQI (US)
22AQI (US)
4th May 2026
30AQI (US)
30AQI (US)
5th May 2026
34AQI (US)
34AQI (US)
6th May 2026
32AQI (US)
32AQI (US)
7th May 2026
28AQI (US)
28AQI (US)
8th May 2026
29AQI (US)
29AQI (US)
9th May 2026
10th May 2026
33AQI (US)
33AQI (US)
11th May 2026
32AQI (US)
32AQI (US)
12th May 2026
33AQI (US)
33AQI (US)
13th May 2026
30AQI (US)
30AQI (US)
14th May 2026
28AQI (US)
28AQI (US)
15th May 2026
44AQI (US)
44AQI (US)
16th May 2026
51AQI (US)
51AQI (US)
17th May 2026
58AQI (US)
58AQI (US)
18th May 2026
52AQI (US)
52AQI (US)
19th May 2026
53AQI (US)
53AQI (US)
20th May 2026
44AQI (US)
44AQI (US)
21st May 2026
40AQI (US)
40AQI (US)
22nd May 2026
48AQI (US)
48AQI (US)
23rd May 2026
48AQI (US)
48AQI (US)
24th May 2026
41AQI (US)
41AQI (US)
25th May 2026
42AQI (US)
42AQI (US)
26th May 2026
28AQI (US)
28AQI (US)
27th May 2026
29AQI (US)
29AQI (US)
28th May 2026
28AQI (US)
28AQI (US)
29th May 2026
26AQI (US)
26AQI (US)
30th May 2026
28AQI (US)
28AQI (US)
31st May 2026
29AQI (US)
29AQI (US)
1st June 2026
31AQI (US)
31AQI (US)
2nd June 2026
31AQI (US)
31AQI (US)
3rd June 2026
30AQI (US)
30AQI (US)
4th June 2026
25AQI (US)
25AQI (US)
5th June 2026
27AQI (US)
27AQI (US)
6th June 2026
25AQI (US)
25AQI (US)
7th June 2026
24AQI (US)
24AQI (US)
8th June 2026
26AQI (US)
26AQI (US)
9th June 2026
26AQI (US)
26AQI (US)
10th June 2026
27AQI (US)
27AQI (US)
11th June 2026
28AQI (US)
28AQI (US)
12th June 2026
26AQI (US)
26AQI (US)
13th June 2026
25AQI (US)
25AQI (US)
14th June 2026
24AQI (US)
24AQI (US)
15th June 2026
26AQI (US)
26AQI (US)
16th June 2026
27AQI (US)
27AQI (US)
17th June 2026
28AQI (US)
28AQI (US)
18th June 2026
27AQI (US)
27AQI (US)
19th June 2026
25AQI (US)
25AQI (US)
20th June 2026
24AQI (US)
24AQI (US)
21st June 2026
22AQI (US)
22AQI (US)
22nd June 2026
25AQI (US)
25AQI (US)
23rd June 2026
24AQI (US)
24AQI (US)
24th June 2026
24AQI (US)
24AQI (US)
25th June 2026
25AQI (US)
25AQI (US)
26th June 2026
27AQI (US)
27AQI (US)
27th June 2026
29AQI (US)
29AQI (US)
28th June 2026
26AQI (US)
26AQI (US)
29th June 2026
24AQI (US)
24AQI (US)
30th June 2026
26AQI (US)
26AQI (US)
1st July 2026
26AQI (US)
26AQI (US)
2nd July 2026
27AQI (US)
27AQI (US)
3rd July 2026
28AQI (US)
28AQI (US)
4th July 2026
24AQI (US)
24AQI (US)
5th July 2026
25AQI (US)
25AQI (US)
6th July 2026
28AQI (US)
28AQI (US)
7th July 2026
30AQI (US)
30AQI (US)
8th July 2026
26AQI (US)
26AQI (US)
9th July 2026
29AQI (US)
29AQI (US)
10th July 2026
32AQI (US)
32AQI (US)
11th July 2026
30AQI (US)
30AQI (US)
12th July 2026
29AQI (US)
29AQI (US)
13th July 2026
31AQI (US)
31AQI (US)
14th July 2026
30AQI (US)
30AQI (US)
15th July 2026
28AQI (US)
28AQI (US)
16th July 2026
29AQI (US)
29AQI (US)
17th July 2026
44AQI (US)
44AQI (US)
18th July 2026
48AQI (US)
48AQI (US)
19th July 2026
45AQI (US)
45AQI (US)
20th July 2026
48AQI (US)
48AQI (US)
21st July 2026
45AQI (US)
45AQI (US)
22nd July 2026
45AQI (US)
45AQI (US)
23rd July 2026
41AQI (US)
41AQI (US)
24th July 2026
50AQI (US)
50AQI (US)
25th July 2026
46AQI (US)
46AQI (US)
26th July 2026
47AQI (US)
47AQI (US)
27th July 2026
46AQI (US)
46AQI (US)
28th July 2026
46AQI (US)
46AQI (US)
29th July 2026
46AQI (US)
46AQI (US)
30th July 2026
44AQI (US)
44AQI (US)
31st July 2026
53AQI (US)
53AQI (US)
1st August 2026
45AQI (US)
45AQI (US)
2nd August 2026
50AQI (US)
50AQI (US)
3rd August 2026
58AQI (US)
58AQI (US)
4th August 2026
48AQI (US)
48AQI (US)
5th August 2026
44AQI (US)
44AQI (US)
6th August 2026
48AQI (US)
48AQI (US)
7th August 2026
45AQI (US)
45AQI (US)
8th August 2026
47AQI (US)
47AQI (US)
9th August 2026
47AQI (US)
47AQI (US)
10th August 2026
47AQI (US)
47AQI (US)
11th August 2026
45AQI (US)
45AQI (US)
12th August 2026
45AQI (US)
45AQI (US)
13th August 2026
14th August 2026
15th August 2026
16th August 2026
17th August 2026
18th August 2026
19th August 2026
20th August 2026
21st August 2026
22nd August 2026
23rd August 2026
24th August 2026
25th August 2026
26th August 2026
27th August 2026
28th August 2026
29th August 2026
30th August 2026
31st August 2026
1st September 2026
2nd September 2026
3rd September 2026
4th September 2026
5th September 2026
6th September 2026
7th September 2026
8th September 2026
9th September 2026
10th September 2026
11th September 2026
12th September 2026
13th September 2026
14th September 2026
15th September 2026
16th September 2026
17th September 2026
18th September 2026
19th September 2026
20th September 2026
21st September 2026
22nd September 2026
23rd September 2026
24th September 2026
25th September 2026
26th September 2026
27th September 2026
28th September 2026
29th September 2026
30th September 2026
1st October 2026
2nd October 2026
3rd October 2026
4th October 2026
5th October 2026
6th October 2026
7th October 2026
8th October 2026
9th October 2026
10th October 2026
11th October 2026
12th October 2026
13th October 2026
14th October 2026
15th October 2026
16th October 2026
17th October 2026
18th October 2026
19th October 2026
20th October 2026
21st October 2026
22nd October 2026
23rd October 2026
24th October 2026
25th October 2026
26th October 2026
27th October 2026
28th October 2026
29th October 2026
30th October 2026
31st October 2026
1st November 2026
2nd November 2026
3rd November 2026
4th November 2026
5th November 2026
6th November 2026
7th November 2026
8th November 2026
9th November 2026
10th November 2026
11th November 2026
12th November 2026
13th November 2026
14th November 2026
15th November 2026
16th November 2026
17th November 2026
18th November 2026
19th November 2026
20th November 2026
21st November 2026
22nd November 2026
23rd November 2026
24th November 2026
25th November 2026
26th November 2026
27th November 2026
28th November 2026
29th November 2026
30th November 2026
1st December 2026
2nd December 2026
3rd December 2026
4th December 2026
5th December 2026
6th December 2026
7th December 2026
8th December 2026
9th December 2026
10th December 2026
11th December 2026
12th December 2026
13th December 2026
14th December 2026
15th December 2026
16th December 2026
17th December 2026
18th December 2026
19th December 2026
20th December 2026
21st December 2026
22nd December 2026
23rd December 2026
24th December 2026
25th December 2026
26th December 2026
27th December 2026
28th December 2026
29th December 2026
30th December 2026
31st December 2026
42AQI (US)
43AQI (US)
35AQI (US)
30AQI (US)
36AQI (US)
26AQI (US)
37AQI (US)
47AQI (US)
No. of days
Jan.Feb.Mar.Apr.MayJun.Jul.Aug.Sep.Oct.Nov.Dec.Total Days
202636AQI (US)
20
11
26
2
30
1
28
26
4
30
30
1
11
1
201
20
Highest AQI (US) recorded in
August47AQI (US)
Lowest AQI (US) recorded in
June26AQI (US)
202535AQI (US)
26
5
28
31
29
1
31
24
6
31
31
29
1
22
9
25
5
25
6
332
33
Highest AQI (US) recorded in
October45AQI (US)
Lowest AQI (US) recorded in
July25AQI (US)
202430AQI (US)
20
21
23
27
30
29
31
31
30
28
3
25
5
19
12
314
20
Highest AQI (US) recorded in
December46AQI (US)
Lowest AQI (US) recorded in
January19AQI (US)
202322AQI (US)
30
28
30
30
31
30
31
31
27
28
26
29
351
Highest AQI (US) recorded in
April31AQI (US)
Lowest AQI (US) recorded in
July16AQI (US)
202234AQI (US)
16
13
17
4
1
27
4
24
1
30
1
30
20
1
25
4
31
20
17
14
258
41
1
Highest AQI (US) recorded in
January49AQI (US)
Lowest AQI (US) recorded in
July21AQI (US)
202137AQI (US)
18
11
25
3
30
25
5
31
28
2
31
22
9
21
9
30
1
17
13
24
7
302
60
Highest AQI (US) recorded in
November47AQI (US)
Lowest AQI (US) recorded in
June26AQI (US)
202045AQI (US)
12
1
19
1
18
27
3
28
3
19
7
5
12
13
4
1
20
9
2
18
10
16
15
189
62
7
4
1
Highest AQI (US) recorded in
September71AQI (US)
Lowest AQI (US) recorded in
June30AQI (US)
Most & Least Polluted Years Over the Last 7 Years
Most Polluted Year Recorded
2020(Avg.)
45AQI (US)Least Polluted Year Recorded
2023(Avg.)
22AQI (US)Vallejo's annual 2026 AQI (US) (36) shows an average percentage change of 11.6% (worsened AQI (US)) compared to previous years: 2020 (45), 2021 (37), 2022 (34), 2023 (22), 2024 (30), 2025 (35).
