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HistoryAQIPM₂.₅PM₁₀COSO₂NO₂O₃

W Main St, Walla Walla, Washington, 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

W Main St, Walla Walla, Washington, United States

2022
2023
2024
2025
2026
AQI
.
Days

AQI Trends: Highest and Lowest

Highest AQI recorded on
20th Aug 2023
228AQI
Lowest AQI recorded on
10th Aug 2023
13AQI

Same Day Analysis (9th August):
On this day, AQI across the 5 years varied significantly: 2026 ranks 1st highest AQI at 58 of Moderate air quality on the same day.

Day & Night AQI Trend: 9th Aug - 10th Aug 2026

W Main St, Walla Walla, Washington, United States

AQI
Day
Night
.

5 AM9th Aug 2026

8 PM

4 AM10th Aug 2026

Day time
Avg. Highest Time
12PM9th Aug

72AQI

Avg. Lowest Time
11AM9th Aug

46AQI

Night time
Avg. Highest Time
4AM10th Aug

81AQI

Avg. Lowest Time
10PM9th Aug

54AQI

In the last 24 hours,

W Main St's AQI reached its highest point of 81 at 4 AM during the Night, while the lowest point, 46, was recorded at 11 AM during the Day between 9th Aug and 10th Aug 2026.

Day & Night AQI Trend : Jul - Aug 2026

W Main St, Walla Walla, Washington, United States

JulAug
12th - 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 - 10th10th
Day
Night
12th Jul 2026315 AMAQI
12th Jul 2026306 AMAQI
12th Jul 2026317 AMAQI
12th Jul 2026328 AMAQI
12th Jul 2026319 AMAQI
12th Jul 20263210 AMAQI
12th Jul 20263411 AMAQI
12th Jul 20262812 PMAQI
12th Jul 2026301 PMAQI
12th Jul 2026272 PMAQI
12th Jul 2026283 PMAQI
12th Jul 2026304 PMAQI
12th Jul 2026305 PMAQI
12th Jul 2026306 PMAQI
12th Jul 2026287 PMAQI
12th Jul 2026288 PMAQI
12th Jul 2026249 PMAQI
12th Jul 20262410 PMAQI
12th Jul 20262411 PMAQI
13th Jul 20262712 AMAQI
13th Jul 2026321 AMAQI
13th Jul 2026312 AMAQI
13th Jul 2026323 AMAQI
13th Jul 2026334 AMAQI

22°C17/27°C

13th Jul 2026345 AMAQI
13th Jul 2026346 AMAQI
13th Jul 2026367 AMAQI
13th Jul 2026348 AMAQI
13th Jul 2026329 AMAQI
13th Jul 20263410 AMAQI
13th Jul 20263211 AMAQI
13th Jul 20262812 PMAQI
13th Jul 2026301 PMAQI
13th Jul 2026342 PMAQI
13th Jul 2026323 PMAQI
13th Jul 2026284 PMAQI
13th Jul 2026325 PMAQI
13th Jul 2026356 PMAQI
13th Jul 2026257 PMAQI
13th Jul 2026248 PMAQI
13th Jul 2026229 PMAQI
13th Jul 20262210 PMAQI
13th Jul 20262011 PMAQI
14th Jul 20262712 AMAQI
14th Jul 2026301 AMAQI
14th Jul 2026322 AMAQI
14th Jul 2026313 AMAQI
14th Jul 2026324 AMAQI

25°C15/35°C

14th Jul 2026345 AMAQI
14th Jul 2026346 AMAQI
14th Jul 2026357 AMAQI
14th Jul 2026368 AMAQI
14th Jul 2026349 AMAQI
14th Jul 20263310 AMAQI
14th Jul 20263311 AMAQI
14th Jul 20262612 PMAQI
14th Jul 2026311 PMAQI
14th Jul 2026292 PMAQI
14th Jul 2026323 PMAQI
14th Jul 2026344 PMAQI
14th Jul 2026325 PMAQI
14th Jul 2026346 PMAQI
14th Jul 2026267 PMAQI
14th Jul 2026268 PMAQI
14th Jul 2026239 PMAQI
14th Jul 20261910 PMAQI
14th Jul 20262011 PMAQI
15th Jul 20262212 AMAQI
15th Jul 2026271 AMAQI
15th Jul 2026262 AMAQI
15th Jul 2026223 AMAQI
15th Jul 2026284 AMAQI

27°C20/33°C

15th Jul 2026265 AMAQI
15th Jul 2026306 AMAQI
15th Jul 2026277 AMAQI
15th Jul 2026258 AMAQI
15th Jul 2026269 AMAQI
15th Jul 20262910 AMAQI
15th Jul 20262911 AMAQI
15th Jul 20262812 PMAQI
15th Jul 2026301 PMAQI
15th Jul 2026292 PMAQI
15th Jul 2026263 PMAQI
15th Jul 2026314 PMAQI
15th Jul 2026305 PMAQI
15th Jul 2026346 PMAQI
15th Jul 2026307 PMAQI
15th Jul 2026308 PMAQI
15th Jul 2026269 PMAQI
15th Jul 20262610 PMAQI
15th Jul 20262611 PMAQI
16th Jul 20262612 AMAQI
16th Jul 2026261 AMAQI
16th Jul 2026322 AMAQI
16th Jul 2026303 AMAQI
16th Jul 2026304 AMAQI

29°C20/36°C

16th Jul 2026315 AMAQI
16th Jul 2026246 AMAQI
16th Jul 2026327 AMAQI
16th Jul 2026298 AMAQI
16th Jul 2026329 AMAQI
16th Jul 20262810 AMAQI
16th Jul 20263011 AMAQI
16th Jul 20263212 PMAQI
16th Jul 2026301 PMAQI
16th Jul 2026282 PMAQI
16th Jul 2026303 PMAQI
16th Jul 2026274 PMAQI
16th Jul 2026305 PMAQI
16th Jul 2026306 PMAQI
16th Jul 2026287 PMAQI
16th Jul 2026268 PMAQI
16th Jul 2026239 PMAQI
16th Jul 20262410 PMAQI
16th Jul 20262511 PMAQI
17th Jul 20269012 AMAQI
17th Jul 2026621 AMAQI
17th Jul 2026722 AMAQI
17th Jul 20264703 AMAQI
17th Jul 20261824 AMAQI

29°C22/37°C

17th Jul 20261355 AMAQI
17th Jul 20261126 AMAQI
17th Jul 20261017 AMAQI
17th Jul 2026788 AMAQI
17th Jul 2026629 AMAQI
17th Jul 20266010 AMAQI
17th Jul 20266711 AMAQI
17th Jul 20266812 PMAQI
17th Jul 2026641 PMAQI
17th Jul 2026502 PMAQI
17th Jul 2026603 PMAQI
17th Jul 2026604 PMAQI
17th Jul 2026575 PMAQI
17th Jul 2026586 PMAQI
17th Jul 2026517 PMAQI
17th Jul 2026558 PMAQI
17th Jul 2026509 PMAQI
17th Jul 20265310 PMAQI
17th Jul 20265111 PMAQI
18th Jul 20265412 AMAQI
18th Jul 2026541 AMAQI
18th Jul 2026512 AMAQI
18th Jul 2026463 AMAQI
18th Jul 2026484 AMAQI

25°C18/32°C

18th Jul 2026445 AMAQI
18th Jul 2026526 AMAQI
18th Jul 2026517 AMAQI
18th Jul 2026558 AMAQI
18th Jul 2026539 AMAQI
18th Jul 20265010 AMAQI
18th Jul 20264611 AMAQI
18th Jul 20265212 PMAQI
18th Jul 2026421 PMAQI
18th Jul 2026422 PMAQI
18th Jul 2026443 PMAQI
18th Jul 2026364 PMAQI
18th Jul 2026505 PMAQI
18th Jul 2026566 PMAQI
18th Jul 2026387 PMAQI
18th Jul 2026548 PMAQI
18th Jul 2026589 PMAQI
18th Jul 20266810 PMAQI
18th Jul 20265411 PMAQI
19th Jul 20264912 AMAQI
19th Jul 2026471 AMAQI
19th Jul 2026312 AMAQI
19th Jul 2026363 AMAQI
19th Jul 2026464 AMAQI

24°C16/31°C

19th Jul 2026465 AMAQI
19th Jul 2026336 AMAQI
19th Jul 2026407 AMAQI
19th Jul 2026448 AMAQI
19th Jul 2026469 AMAQI
19th Jul 20264210 AMAQI
19th Jul 20264211 AMAQI
19th Jul 20263812 PMAQI
19th Jul 2026441 PMAQI
19th Jul 2026402 PMAQI
19th Jul 2026333 PMAQI
19th Jul 2026404 PMAQI
19th Jul 2026385 PMAQI
19th Jul 2026426 PMAQI
19th Jul 2026447 PMAQI
19th Jul 2026428 PMAQI
19th Jul 2026569 PMAQI
19th Jul 20267110 PMAQI
19th Jul 20267211 PMAQI
20th Jul 20266812 AMAQI
20th Jul 2026721 AMAQI
20th Jul 2026512 AMAQI
20th Jul 2026653 AMAQI
20th Jul 2026624 AMAQI

24°C14/32°C

20th Jul 2026625 AMAQI
20th Jul 2026586 AMAQI
20th Jul 2026607 AMAQI
20th Jul 2026668 AMAQI
20th Jul 2026769 AMAQI
20th Jul 20267610 AMAQI
20th Jul 20267211 AMAQI
20th Jul 20265712 PMAQI
20th Jul 2026621 PMAQI
20th Jul 2026602 PMAQI
20th Jul 2026573 PMAQI
20th Jul 2026564 PMAQI
20th Jul 2026565 PMAQI
20th Jul 2026626 PMAQI
20th Jul 2026657 PMAQI
20th Jul 2026869 PMAQI
20th Jul 202613210 PMAQI
20th Jul 202613811 PMAQI
21st Jul 202614512 AMAQI
21st Jul 20261341 AMAQI
21st Jul 2026962 AMAQI
21st Jul 2026863 AMAQI
21st Jul 2026924 AMAQI

25°C19/31°C

21st Jul 2026925 AMAQI
21st Jul 2026826 AMAQI
21st Jul 2026847 AMAQI
21st Jul 2026838 AMAQI
21st Jul 2026819 AMAQI
21st Jul 20268610 AMAQI
21st Jul 202613911 AMAQI
21st Jul 202614012 PMAQI
21st Jul 20261361 PMAQI
21st Jul 20261182 PMAQI
21st Jul 20261023 PMAQI
21st Jul 2026974 PMAQI
21st Jul 2026875 PMAQI
21st Jul 2026796 PMAQI
21st Jul 2026787 PMAQI
21st Jul 2026798 PMAQI
21st Jul 2026789 PMAQI
21st Jul 20267410 PMAQI
21st Jul 20267311 PMAQI
22nd Jul 20267212 AMAQI
22nd Jul 2026751 AMAQI
22nd Jul 2026762 AMAQI
22nd Jul 2026763 AMAQI
22nd Jul 2026804 AMAQI

26°C16/35°C

22nd Jul 2026765 AMAQI
22nd Jul 2026796 AMAQI
22nd Jul 2026827 AMAQI
22nd Jul 2026868 AMAQI
22nd Jul 2026979 AMAQI
22nd Jul 202610910 AMAQI
22nd Jul 202610411 AMAQI
22nd Jul 202611812 PMAQI
22nd Jul 20261161 PMAQI
22nd Jul 20261202 PMAQI
22nd Jul 20261183 PMAQI
22nd Jul 20261224 PMAQI
22nd Jul 20261265 PMAQI
22nd Jul 20261186 PMAQI
22nd Jul 20261147 PMAQI
22nd Jul 20261228 PMAQI
22nd Jul 20261169 PMAQI
22nd Jul 202612210 PMAQI
22nd Jul 202612411 PMAQI
23rd Jul 202611212 AMAQI
23rd Jul 20261161 AMAQI
23rd Jul 20261082 AMAQI
23rd Jul 20261023 AMAQI
23rd Jul 20261004 AMAQI

30°C21/38°C

23rd Jul 2026925 AMAQI
23rd Jul 2026976 AMAQI
23rd Jul 2026977 AMAQI
23rd Jul 2026978 AMAQI
23rd Jul 2026959 AMAQI
23rd Jul 20269510 AMAQI
23rd Jul 20268411 AMAQI
23rd Jul 20268412 PMAQI
23rd Jul 2026891 PMAQI
23rd Jul 2026902 PMAQI
23rd Jul 2026863 PMAQI
23rd Jul 2026754 PMAQI
23rd Jul 2026795 PMAQI
23rd Jul 2026886 PMAQI
23rd Jul 2026797 PMAQI
23rd Jul 2026818 PMAQI
23rd Jul 2026939 PMAQI
23rd Jul 202614310 PMAQI
23rd Jul 202614411 PMAQI
24th Jul 202611512 AMAQI
24th Jul 20261071 AMAQI
24th Jul 2026812 AMAQI
24th Jul 2026803 AMAQI
24th Jul 2026654 AMAQI

28°C21/35°C

24th Jul 2026525 AMAQI
24th Jul 2026566 AMAQI
24th Jul 2026527 AMAQI
24th Jul 2026528 AMAQI
24th Jul 2026489 AMAQI
24th Jul 20265110 AMAQI
24th Jul 20265611 AMAQI
24th Jul 20265812 PMAQI
24th Jul 2026681 PMAQI
24th Jul 2026602 PMAQI
24th Jul 2026643 PMAQI
24th Jul 2026534 PMAQI
24th Jul 2026485 PMAQI
24th Jul 2026556 PMAQI
24th Jul 2026577 PMAQI
24th Jul 2026628 PMAQI
24th Jul 2026689 PMAQI
24th Jul 20268310 PMAQI
24th Jul 20264411 PMAQI
25th Jul 20265012 AMAQI
25th Jul 2026471 AMAQI
25th Jul 2026542 AMAQI
25th Jul 2026583 AMAQI
25th Jul 2026524 AMAQI

28°C19/35°C

25th Jul 2026385 AMAQI
25th Jul 2026516 AMAQI
25th Jul 2026497 AMAQI
25th Jul 2026428 AMAQI
25th Jul 2026519 AMAQI
25th Jul 20266010 AMAQI
25th Jul 20265611 AMAQI
25th Jul 20266012 PMAQI
25th Jul 2026421 PMAQI
25th Jul 2026572 PMAQI
25th Jul 2026673 PMAQI
25th Jul 2026704 PMAQI
25th Jul 2026685 PMAQI
25th Jul 2026696 PMAQI
25th Jul 2026737 PMAQI
25th Jul 2026738 PMAQI
25th Jul 2026749 PMAQI
25th Jul 20265310 PMAQI
25th Jul 20265211 PMAQI
26th Jul 20264412 AMAQI
26th Jul 2026511 AMAQI
26th Jul 2026442 AMAQI
26th Jul 2026403 AMAQI
26th Jul 2026624 AMAQI

25°C18/32°C

26th Jul 2026575 AMAQI
26th Jul 2026526 AMAQI
26th Jul 2026487 AMAQI
26th Jul 2026488 AMAQI
26th Jul 2026369 AMAQI
26th Jul 20264610 AMAQI
26th Jul 20264811 AMAQI
26th Jul 20265512 PMAQI
26th Jul 2026761 PMAQI
26th Jul 2026822 PMAQI
26th Jul 2026763 PMAQI
26th Jul 2026804 PMAQI
26th Jul 2026705 PMAQI
26th Jul 2026636 PMAQI
26th Jul 2026607 PMAQI
26th Jul 2026628 PMAQI
26th Jul 2026909 PMAQI
26th Jul 20268610 PMAQI
26th Jul 20268511 PMAQI
27th Jul 20267812 AMAQI
27th Jul 2026861 AMAQI
27th Jul 2026762 AMAQI
27th Jul 2026643 AMAQI
27th Jul 2026524 AMAQI

22°C15/30°C

27th Jul 2026535 AMAQI
27th Jul 2026486 AMAQI
27th Jul 2026507 AMAQI
27th Jul 2026538 AMAQI
27th Jul 2026559 AMAQI
27th Jul 20264810 AMAQI
27th Jul 20264811 AMAQI
27th Jul 20264212 PMAQI
27th Jul 2026511 PMAQI
27th Jul 2026562 PMAQI
27th Jul 2026643 PMAQI
27th Jul 2026824 PMAQI
27th Jul 2026885 PMAQI
27th Jul 2026846 PMAQI
27th Jul 2026867 PMAQI
27th Jul 2026838 PMAQI
27th Jul 2026869 PMAQI
27th Jul 20268810 PMAQI
27th Jul 20268111 PMAQI
28th Jul 20268312 AMAQI
28th Jul 2026811 AMAQI
28th Jul 2026852 AMAQI
28th Jul 2026903 AMAQI
28th Jul 2026884 AMAQI

23°C15/31°C

28th Jul 2026755 AMAQI
28th Jul 2026676 AMAQI
28th Jul 2026647 AMAQI
28th Jul 2026628 AMAQI
28th Jul 2026529 AMAQI
28th Jul 20265110 AMAQI
28th Jul 20265411 AMAQI
28th Jul 20265612 PMAQI
28th Jul 2026551 PMAQI
28th Jul 2026582 PMAQI
28th Jul 2026783 PMAQI
28th Jul 20261224 PMAQI
28th Jul 20261345 PMAQI
28th Jul 20261186 PMAQI
28th Jul 2026877 PMAQI
28th Jul 2026758 PMAQI
28th Jul 2026679 PMAQI
28th Jul 20266210 PMAQI
28th Jul 20266411 PMAQI
29th Jul 20265712 AMAQI
29th Jul 2026551 AMAQI
29th Jul 2026332 AMAQI
29th Jul 2026363 AMAQI
29th Jul 2026764 AMAQI

23°C16/30°C

29th Jul 2026665 AMAQI
29th Jul 2026516 AMAQI
29th Jul 2026567 AMAQI
29th Jul 2026708 AMAQI
29th Jul 2026799 AMAQI
29th Jul 20266310 AMAQI
29th Jul 20264611 AMAQI
29th Jul 20263612 PMAQI
29th Jul 2026521 PMAQI
29th Jul 2026722 PMAQI
29th Jul 2026833 PMAQI
29th Jul 2026464 PMAQI
29th Jul 2026535 PMAQI
29th Jul 2026586 PMAQI
29th Jul 2026597 PMAQI
29th Jul 2026608 PMAQI
29th Jul 2026659 PMAQI
29th Jul 20267010 PMAQI
29th Jul 20266611 PMAQI
30th Jul 20266612 AMAQI
30th Jul 2026711 AMAQI
30th Jul 2026672 AMAQI
30th Jul 2026643 AMAQI
30th Jul 2026664 AMAQI

22°C14/29°C

30th Jul 2026655 AMAQI
30th Jul 2026666 AMAQI
30th Jul 2026657 AMAQI
30th Jul 2026608 AMAQI
30th Jul 2026589 AMAQI
30th Jul 20266010 AMAQI
30th Jul 20265511 AMAQI
30th Jul 20265012 PMAQI
30th Jul 2026551 PMAQI
30th Jul 2026572 PMAQI
30th Jul 2026553 PMAQI
30th Jul 2026584 PMAQI
30th Jul 2026555 PMAQI
30th Jul 2026736 PMAQI
30th Jul 2026827 PMAQI
30th Jul 2026858 PMAQI
30th Jul 20261029 PMAQI
30th Jul 202612610 PMAQI
30th Jul 202613011 PMAQI
31st Jul 202613412 AMAQI
31st Jul 20261361 AMAQI
31st Jul 20261142 AMAQI
31st Jul 20261083 AMAQI
31st Jul 2026834 AMAQI

23°C15/31°C

31st Jul 2026725 AMAQI
31st Jul 2026656 AMAQI
31st Jul 2026657 AMAQI
31st Jul 2026628 AMAQI
31st Jul 2026599 AMAQI
31st Jul 20266710 AMAQI
31st Jul 20266611 AMAQI
31st Jul 20267312 PMAQI
31st Jul 2026711 PMAQI
31st Jul 2026672 PMAQI
31st Jul 2026683 PMAQI
31st Jul 2026654 PMAQI
31st Jul 2026675 PMAQI
31st Jul 2026666 PMAQI
31st Jul 2026637 PMAQI
31st Jul 2026638 PMAQI
31st Jul 2026649 PMAQI
31st Jul 202612210 PMAQI
31st Jul 20268911 PMAQI
1st Aug 20267812 AMAQI
1st Aug 2026701 AMAQI
1st Aug 2026562 AMAQI
1st Aug 2026553 AMAQI
1st Aug 2026564 AMAQI

25°C16/35°C

1st Aug 2026545 AMAQI
1st Aug 2026566 AMAQI
1st Aug 2026567 AMAQI
1st Aug 2026508 AMAQI
1st Aug 2026499 AMAQI
1st Aug 20267310 AMAQI
1st Aug 20266611 AMAQI
1st Aug 20268912 PMAQI
1st Aug 2026821 PMAQI
1st Aug 2026762 PMAQI
1st Aug 2026623 PMAQI
1st Aug 2026564 PMAQI
1st Aug 2026855 PMAQI
1st Aug 2026996 PMAQI
1st Aug 2026867 PMAQI
1st Aug 2026678 PMAQI
1st Aug 2026739 PMAQI
1st Aug 20268110 PMAQI
1st Aug 20266011 PMAQI
2nd Aug 20264212 AMAQI
2nd Aug 2026561 AMAQI
2nd Aug 2026482 AMAQI
2nd Aug 2026463 AMAQI
2nd Aug 2026424 AMAQI

24°C18/30°C

2nd Aug 2026425 AMAQI
2nd Aug 2026216 AMAQI
2nd Aug 2026407 AMAQI
2nd Aug 2026448 AMAQI
2nd Aug 2026489 AMAQI
2nd Aug 20265110 AMAQI
2nd Aug 20263311 AMAQI
2nd Aug 20265812 PMAQI
2nd Aug 2026651 PMAQI
2nd Aug 2026562 PMAQI
2nd Aug 2026593 PMAQI
2nd Aug 2026664 PMAQI
2nd Aug 2026625 PMAQI
2nd Aug 2026676 PMAQI
2nd Aug 2026677 PMAQI
2nd Aug 2026648 PMAQI
2nd Aug 20261069 PMAQI
2nd Aug 20269010 PMAQI
2nd Aug 20269011 PMAQI
3rd Aug 20268112 AMAQI
3rd Aug 2026681 AMAQI
3rd Aug 2026622 AMAQI
3rd Aug 2026513 AMAQI
3rd Aug 2026604 AMAQI

18°C11/25°C

3rd Aug 2026675 AMAQI
3rd Aug 2026686 AMAQI
3rd Aug 2026687 AMAQI
3rd Aug 2026848 AMAQI
3rd Aug 2026859 AMAQI
3rd Aug 20264610 AMAQI
3rd Aug 20266611 AMAQI
3rd Aug 20267612 PMAQI
3rd Aug 2026671 PMAQI
3rd Aug 2026662 PMAQI
3rd Aug 2026663 PMAQI
3rd Aug 2026684 PMAQI
3rd Aug 2026735 PMAQI
3rd Aug 2026686 PMAQI
3rd Aug 2026707 PMAQI
3rd Aug 2026748 PMAQI
3rd Aug 2026649 PMAQI
3rd Aug 20266610 PMAQI
3rd Aug 20266811 PMAQI
4th Aug 20267112 AMAQI
4th Aug 2026711 AMAQI
4th Aug 2026702 AMAQI
4th Aug 2026723 AMAQI
4th Aug 2026674 AMAQI

18°C10/26°C

4th Aug 2026655 AMAQI
4th Aug 2026716 AMAQI
4th Aug 2026787 AMAQI
4th Aug 2026728 AMAQI
4th Aug 2026889 AMAQI
4th Aug 20267210 AMAQI
4th Aug 20266811 AMAQI
4th Aug 20267212 PMAQI
4th Aug 2026731 PMAQI
4th Aug 2026702 PMAQI
4th Aug 2026653 PMAQI
4th Aug 2026574 PMAQI
4th Aug 2026695 PMAQI
4th Aug 2026766 PMAQI
4th Aug 2026727 PMAQI
4th Aug 2026678 PMAQI
4th Aug 2026649 PMAQI
4th Aug 20267110 PMAQI
4th Aug 20267211 PMAQI
5th Aug 20266712 AMAQI
5th Aug 2026691 AMAQI
5th Aug 2026712 AMAQI
5th Aug 2026743 AMAQI
5th Aug 20261004 AMAQI

21°C13/30°C

5th Aug 20261285 AMAQI
5th Aug 20261166 AMAQI
5th Aug 2026977 AMAQI
5th Aug 2026748 AMAQI
5th Aug 2026689 AMAQI
5th Aug 20269410 AMAQI
5th Aug 202613911 AMAQI
5th Aug 202615412 PMAQI
5th Aug 20261541 PMAQI
5th Aug 20261522 PMAQI
5th Aug 20261363 PMAQI
5th Aug 20261214 PMAQI
5th Aug 20261225 PMAQI
5th Aug 20261246 PMAQI
5th Aug 20261267 PMAQI
5th Aug 20261258 PMAQI
5th Aug 20261209 PMAQI
5th Aug 202611010 PMAQI
5th Aug 202611011 PMAQI
6th Aug 202611612 AMAQI
6th Aug 20261121 AMAQI
6th Aug 2026862 AMAQI
6th Aug 2026713 AMAQI
6th Aug 2026744 AMAQI

24°C14/34°C

6th Aug 2026785 AMAQI
6th Aug 2026746 AMAQI
6th Aug 2026607 AMAQI
6th Aug 2026708 AMAQI
6th Aug 2026829 AMAQI
6th Aug 20266910 AMAQI
6th Aug 20267211 AMAQI
6th Aug 20267012 PMAQI
6th Aug 2026801 PMAQI
6th Aug 2026742 PMAQI
6th Aug 2026703 PMAQI
6th Aug 2026714 PMAQI
6th Aug 2026725 PMAQI
6th Aug 2026656 PMAQI
6th Aug 2026687 PMAQI
6th Aug 2026708 PMAQI
6th Aug 2026629 PMAQI
6th Aug 20267010 PMAQI
6th Aug 20266911 PMAQI
7th Aug 20267812 AMAQI
7th Aug 2026761 AMAQI
7th Aug 2026702 AMAQI
7th Aug 2026763 AMAQI
7th Aug 2026684 AMAQI

26°C17/35°C

7th Aug 2026765 AMAQI
7th Aug 2026766 AMAQI
7th Aug 2026767 AMAQI
7th Aug 2026738 AMAQI
7th Aug 2026749 AMAQI
7th Aug 20267610 AMAQI
7th Aug 20267811 AMAQI
7th Aug 20267312 PMAQI
7th Aug 2026691 PMAQI
7th Aug 2026712 PMAQI
7th Aug 2026703 PMAQI
7th Aug 2026664 PMAQI
7th Aug 2026705 PMAQI
7th Aug 2026686 PMAQI
7th Aug 2026697 PMAQI
7th Aug 2026698 PMAQI
7th Aug 2026629 PMAQI
7th Aug 20266410 PMAQI
7th Aug 20266911 PMAQI
8th Aug 20268012 AMAQI
8th Aug 2026671 AMAQI
8th Aug 2026762 AMAQI
8th Aug 2026643 AMAQI
8th Aug 2026744 AMAQI

27°C20/35°C

8th Aug 2026695 AMAQI
8th Aug 2026726 AMAQI
8th Aug 2026797 AMAQI
8th Aug 2026738 AMAQI
8th Aug 2026729 AMAQI
8th Aug 20266910 AMAQI
8th Aug 20267311 AMAQI
8th Aug 20266412 PMAQI
8th Aug 2026591 PMAQI
8th Aug 2026562 PMAQI
8th Aug 2026523 PMAQI
8th Aug 2026524 PMAQI
8th Aug 2026515 PMAQI
8th Aug 2026466 PMAQI
8th Aug 2026587 PMAQI
8th Aug 2026668 PMAQI
8th Aug 2026629 PMAQI
8th Aug 20266710 PMAQI
8th Aug 20264211 PMAQI
9th Aug 20264012 AMAQI
9th Aug 2026581 AMAQI
9th Aug 2026722 AMAQI
9th Aug 2026683 AMAQI
9th Aug 2026724 AMAQI

26°C18/33°C

9th Aug 2026585 AMAQI
9th Aug 2026546 AMAQI
9th Aug 2026487 AMAQI
9th Aug 2026568 AMAQI
9th Aug 2026579 AMAQI
9th Aug 20265010 AMAQI
9th Aug 20264611 AMAQI
9th Aug 20267212 PMAQI
9th Aug 2026641 PMAQI
9th Aug 2026672 PMAQI
9th Aug 2026483 PMAQI
9th Aug 2026484 PMAQI
9th Aug 2026645 PMAQI
9th Aug 2026676 PMAQI
9th Aug 2026547 PMAQI
9th Aug 2026588 PMAQI
9th Aug 2026609 PMAQI
9th Aug 20265410 PMAQI
9th Aug 20266211 PMAQI
10th Aug 20266212 AMAQI
10th Aug 2026721 AMAQI
10th Aug 2026722 AMAQI
10th Aug 2026803 AMAQI
10th Aug 2026814 AMAQI

24°C16/31°C

10th Aug 2026745 AMAQI
5 AM
10th Aug 2026766 AMAQI
10th Aug 2026627 AMAQI
10th Aug 2026608 AMAQI
10th Aug 2026409 AMAQI
10th Aug 20265110 AMAQI
10th Aug 20264811 AMAQI
10th Aug 20264612 PMAQI
12 PM
10th Aug 2026481 PMAQI
10th Aug 2026482 PMAQI
10th Aug 2026483 PMAQI
10th Aug 2026524 PMAQI
10th Aug 2026565 PMAQI
10th Aug 2026566 PMAQI
8 PM
12 AM
4 AM

23°C15/30°C

Day time
Avg. Highest Time
5 PM - 6 PM

66AQI

2 hours / Day
60 hours / Month
Avg. Lowest Time
6 AM - 10 AM

59AQI

5 hours / Day
150 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 5 PM to 6 PM (Avg. 66), while the lowest AQI was between 6 AM to 10 AM (Avg. 59).
Night time
Avg. Highest Time
3 AM

74AQI

1 hours / Day
30 hours / Month
Avg. Lowest Time
2 AM

62AQI

1 hours / Day
30 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 3 AM to 3 AM (Avg. 74), while the lowest AQI was between 2 AM to 2 AM (Avg. 62).

2026 Days Vs Air Quality

W Main St, Walla Walla, Washington, United States

2026

88%

191

11%

25

0.9%

2

Total number of days with different AQI categories in last 222 days in 2026 (143 days remaining)

Good
191 Days
Moderate
25 Days
Poor
2 Days
Unhealthy
0 Days
Severe
0 Days
Hazardous
0 Days

Under WHO’s Safe Air Quality Limits: 88%

Health Risk Level:

Low

In 2026, 88% of 222 days were within WHO’s safe air quality limits. The risk of health issues is Low, but the long-term effects, especially on vulnerable individuals, remain uncertain.

Annual Air Quality Insights

W Main St, Walla Walla, Washington, 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
43AQI (US)
2nd January 2026
28AQI (US)
3rd January 2026
22AQI (US)
4th January 2026
16AQI (US)
5th January 2026
23AQI (US)
6th January 2026
13AQI (US)
7th January 2026
14AQI (US)
8th January 2026
18AQI (US)
9th January 2026
16AQI (US)
10th January 2026
19AQI (US)
11th January 2026
39AQI (US)
12th January 2026
30AQI (US)
13th January 2026
18AQI (US)
14th January 2026
25AQI (US)
15th January 2026
31AQI (US)
16th January 2026
19AQI (US)
17th January 2026
15AQI (US)
18th January 2026
17AQI (US)
19th January 2026
17AQI (US)
20th January 2026
23AQI (US)
21st January 2026
29AQI (US)
22nd January 2026
48AQI (US)
23rd January 2026
53AQI (US)
24th January 2026
49AQI (US)
25th January 2026
45AQI (US)
26th January 2026
46AQI (US)
27th January 2026
41AQI (US)
28th January 2026
45AQI (US)
29th January 2026
49AQI (US)
30th January 2026
47AQI (US)
31st January 2026
42AQI (US)
1st February 2026
48AQI (US)
2nd February 2026
47AQI (US)
3rd February 2026
47AQI (US)
4th February 2026
47AQI (US)
5th February 2026
47AQI (US)
6th February 2026
39AQI (US)
7th February 2026
38AQI (US)
8th February 2026
46AQI (US)
9th February 2026
43AQI (US)
10th February 2026
42AQI (US)
11th February 2026
37AQI (US)
12th February 2026
38AQI (US)
13th February 2026
45AQI (US)
14th February 2026
44AQI (US)
15th February 2026
36AQI (US)
16th February 2026
42AQI (US)
17th February 2026
43AQI (US)
18th February 2026
40AQI (US)
19th February 2026
41AQI (US)
20th February 2026
37AQI (US)
21st February 2026
30AQI (US)
22nd February 2026
34AQI (US)
23rd February 2026
33AQI (US)
24th February 2026
42AQI (US)
25th February 2026
40AQI (US)
26th February 2026
34AQI (US)
27th February 2026
32AQI (US)
28th February 2026
28AQI (US)
1st March 2026
31AQI (US)
2nd March 2026
48AQI (US)
3rd March 2026
44AQI (US)
4th March 2026
42AQI (US)
5th March 2026
40AQI (US)
6th March 2026
33AQI (US)
7th March 2026
39AQI (US)
8th March 2026
39AQI (US)
9th March 2026
36AQI (US)
10th March 2026
35AQI (US)
11th March 2026
39AQI (US)
12th March 2026
37AQI (US)
13th March 2026
39AQI (US)
14th March 2026
34AQI (US)
15th March 2026
29AQI (US)
16th March 2026
21AQI (US)
17th March 2026
26AQI (US)
18th March 2026
26AQI (US)
19th March 2026
32AQI (US)
20th March 2026
38AQI (US)
21st March 2026
36AQI (US)
22nd March 2026
35AQI (US)
23rd March 2026
37AQI (US)
24th March 2026
35AQI (US)
25th March 2026
31AQI (US)
26th March 2026
27AQI (US)
27th March 2026
28AQI (US)
28th March 2026
30AQI (US)
29th March 2026
26AQI (US)
30th March 2026
26AQI (US)
31st March 2026
24AQI (US)
1st April 2026
27AQI (US)
2nd April 2026
30AQI (US)
3rd April 2026
26AQI (US)
4th April 2026
31AQI (US)
5th April 2026
27AQI (US)
6th April 2026
27AQI (US)
7th April 2026
22AQI (US)
8th April 2026
30AQI (US)
9th April 2026
27AQI (US)
10th April 2026
29AQI (US)
11th April 2026
30AQI (US)
12th April 2026
25AQI (US)
13th April 2026
29AQI (US)
14th April 2026
32AQI (US)
15th April 2026
32AQI (US)
16th April 2026
28AQI (US)
17th April 2026
18th April 2026
28AQI (US)
19th April 2026
32AQI (US)
20th April 2026
26AQI (US)
21st April 2026
26AQI (US)
22nd April 2026
23rd April 2026
23AQI (US)
24th April 2026
25AQI (US)
25th April 2026
28AQI (US)
26th April 2026
31AQI (US)
27th April 2026
26AQI (US)
28th April 2026
24AQI (US)
29th April 2026
22AQI (US)
30th April 2026
26AQI (US)
1st May 2026
24AQI (US)
2nd May 2026
24AQI (US)
3rd May 2026
23AQI (US)
4th May 2026
32AQI (US)
5th May 2026
35AQI (US)
6th May 2026
29AQI (US)
7th May 2026
26AQI (US)
8th May 2026
26AQI (US)
9th May 2026
10th May 2026
25AQI (US)
11th May 2026
26AQI (US)
12th May 2026
24AQI (US)
13th May 2026
27AQI (US)
14th May 2026
23AQI (US)
15th May 2026
47AQI (US)
16th May 2026
51AQI (US)
17th May 2026
55AQI (US)
18th May 2026
49AQI (US)
19th May 2026
53AQI (US)
20th May 2026
52AQI (US)
21st May 2026
41AQI (US)
22nd May 2026
48AQI (US)
23rd May 2026
49AQI (US)
24th May 2026
47AQI (US)
25th May 2026
43AQI (US)
26th May 2026
27AQI (US)
27th May 2026
28AQI (US)
28th May 2026
27AQI (US)
29th May 2026
26AQI (US)
30th May 2026
28AQI (US)
31st May 2026
29AQI (US)
1st June 2026
31AQI (US)
2nd June 2026
31AQI (US)
3rd June 2026
29AQI (US)
4th June 2026
25AQI (US)
5th June 2026
27AQI (US)
6th June 2026
25AQI (US)
7th June 2026
24AQI (US)
8th June 2026
26AQI (US)
9th June 2026
26AQI (US)
10th June 2026
27AQI (US)
11th June 2026
27AQI (US)
12th June 2026
27AQI (US)
13th June 2026
24AQI (US)
14th June 2026
23AQI (US)
15th June 2026
26AQI (US)
16th June 2026
28AQI (US)
17th June 2026
27AQI (US)
18th June 2026
27AQI (US)
19th June 2026
25AQI (US)
20th June 2026
24AQI (US)
21st June 2026
22AQI (US)
22nd June 2026
25AQI (US)
23rd June 2026
25AQI (US)
24th June 2026
24AQI (US)
25th June 2026
29AQI (US)
26th June 2026
28AQI (US)
27th June 2026
30AQI (US)
28th June 2026
27AQI (US)
29th June 2026
25AQI (US)
30th June 2026
26AQI (US)
1st July 2026
26AQI (US)
2nd July 2026
27AQI (US)
3rd July 2026
28AQI (US)
4th July 2026
25AQI (US)
5th July 2026
25AQI (US)
6th July 2026
28AQI (US)
7th July 2026
29AQI (US)
8th July 2026
27AQI (US)
9th July 2026
28AQI (US)
10th July 2026
32AQI (US)
11th July 2026
30AQI (US)
12th July 2026
29AQI (US)
13th July 2026
30AQI (US)
14th July 2026
30AQI (US)
15th July 2026
28AQI (US)
16th July 2026
28AQI (US)
17th July 2026
90AQI (US)
18th July 2026
50AQI (US)
19th July 2026
44AQI (US)
20th July 2026
70AQI (US)
21st July 2026
98AQI (US)
22nd July 2026
102AQI (US)
23rd July 2026
97AQI (US)
24th July 2026
64AQI (US)
25th July 2026
57AQI (US)
26th July 2026
61AQI (US)
27th July 2026
67AQI (US)
28th July 2026
76AQI (US)
29th July 2026
59AQI (US)
30th July 2026
70AQI (US)
31st July 2026
80AQI (US)
1st August 2026
68AQI (US)
2nd August 2026
57AQI (US)
3rd August 2026
68AQI (US)
4th August 2026
71AQI (US)
5th August 2026
110AQI (US)
6th August 2026
75AQI (US)
7th August 2026
72AQI (US)
8th August 2026
64AQI (US)
9th August 2026
58AQI (US)
10th August 2026
11th August 2026
12th August 2026
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

30AQI (US)

40AQI (US)

34AQI (US)

27AQI (US)

35AQI (US)

26AQI (US)

50AQI (US)

71AQI (US)

No. of days

Jan.Feb.Mar.Apr.MayJun.Jul.Aug.Sep.Oct.Nov.Dec.Total Days

202636AQI (US)

30
1
28
31
28
26
4
30
18
12
1
8
1
191
25
2

Highest AQI (US) recorded in

August

71AQI (US)

Lowest AQI (US) recorded in

June

26AQI (US)

202526AQI (US)

31
28
31
30
31
30
31
22
9
16
13
1
31
29
1
31
341
23
1

Highest AQI (US) recorded in

September

49AQI (US)

Lowest AQI (US) recorded in

May

15AQI (US)

202418AQI (US)

23
4
29
31
30
31
29
28
3
30
1
15
31
28
2
31
336
10

Highest AQI (US) recorded in

January

28AQI (US)

Lowest AQI (US) recorded in

May

6AQI (US)

202324AQI (US)

30
27
1
30
30
28
3
29
1
31
25
4
1
1
30
30
1
28
1
31
349
11
1
1

Highest AQI (US) recorded in

August

47AQI (US)

Lowest AQI (US) recorded in

April

13AQI (US)

202222AQI (US)

29
21
31
30
31
30
21
1
20
5
3
1
25
6
21
9
29
2
289
22
3
1

Highest AQI (US) recorded in

September

46AQI (US)

Lowest AQI (US) recorded in

May

7AQI (US)

202125AQI (US)

27
2
26
31
30
31
30
22
7
2
19
7
3
2
25
5
31
28
2
31
331
23
5
2

Highest AQI (US) recorded in

August

61AQI (US)

Lowest AQI (US) recorded in

May

13AQI (US)

202027AQI (US)

13
20
18
30
31
28
18
4
1
5
2
29
1
30
29
2
246
7
1
5
2

Highest AQI (US) recorded in

September

75AQI (US)

Lowest AQI (US) recorded in

June

12AQI (US)

Most & Least Polluted Years Over the Last 7 Years

Most Polluted Year Recorded
2026(Avg.)
36AQI (US)
Least Polluted Year Recorded
2024(Avg.)
18AQI (US)

W Main St's annual 2026 AQI (US) (36) shows an average percentage change of 54.9% (worsened AQI (US)) compared to previous years: 2020 (27), 2021 (25), 2022 (22), 2023 (24), 2024 (18), 2025 (26).