Country Background
HistoryAQIPM₂.₅PM₁₀COSO₂NO₂O₃

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+

July Air Quality Analysis

Walla Walla, Washington, United States

2022
2023
2024
2025
2026
AQI
.
Days

AQI Trends: Highest and Lowest

Highest AQI recorded on
22nd Jul 2026
108AQI
Lowest AQI recorded on
2nd Jul 2024
11AQI

Same Day Analysis (30th July):
On this day, AQI across the 5 years varied significantly: 2026 ranks 1st highest AQI at 70 of Moderate air quality on the same day.

Day & Night AQI Trend: 30th Jul - 31st Jul 2026

Walla Walla, Washington, United States

AQI
Day
Night
.

5 AM30th Jul 2026

8 PM

4 AM31st Jul 2026

Day time
Avg. Highest Time
6PM30th Jul

83AQI

Avg. Lowest Time
7AM30th Jul

58AQI

Night time
Avg. Highest Time
12AM31st Jul

108AQI

Avg. Lowest Time
4AM31st Jul

68AQI

In the last 24 hours,

Walla Walla's AQI reached its highest point of 108 at 12 AM during the Night, while the lowest point, 58, was recorded at 7 AM during the Day between 30th Jul and 31st Jul 2026.

Day & Night AQI Trend : Jul 2026

Walla Walla, Washington, United States

Jul
02nd - 03rd03rd - 04th04th - 05th05th - 06th06th - 07th07th - 08th08th - 09th09th - 10th10th - 11th11th - 12th12th - 13th13th - 14th14th - 15th15th - 16th16th - 17th17th - 18th18th - 19th19th - 20th20th - 21st21st - 22nd22nd - 23rd23rd - 24th24th - 25th25th - 26th26th - 27th27th - 28th28th - 29th29th - 30th30th - 31st31st
Day
Night
2nd Jul 2026175 AMAQI
2nd Jul 2026156 AMAQI
2nd Jul 2026187 AMAQI
2nd Jul 2026188 AMAQI
2nd Jul 2026169 AMAQI
2nd Jul 20261510 AMAQI
2nd Jul 20261611 AMAQI
2nd Jul 20262312 PMAQI
2nd Jul 2026181 PMAQI
2nd Jul 2026202 PMAQI
2nd Jul 2026193 PMAQI
2nd Jul 2026194 PMAQI
2nd Jul 2026165 PMAQI
2nd Jul 2026166 PMAQI
2nd Jul 2026157 PMAQI
2nd Jul 2026178 PMAQI
2nd Jul 2026199 PMAQI
2nd Jul 20262110 PMAQI
2nd Jul 20262611 PMAQI
3rd Jul 20263212 AMAQI
3rd Jul 2026341 AMAQI
3rd Jul 2026302 AMAQI
3rd Jul 2026283 AMAQI
3rd Jul 2026204 AMAQI

18°C10/26°C

3rd Jul 2026195 AMAQI
3rd Jul 2026176 AMAQI
3rd Jul 2026177 AMAQI
3rd Jul 2026178 AMAQI
3rd Jul 2026179 AMAQI
3rd Jul 20262410 AMAQI
3rd Jul 20262511 AMAQI
3rd Jul 20262412 PMAQI
3rd Jul 2026281 PMAQI
3rd Jul 2026312 PMAQI
3rd Jul 2026323 PMAQI
3rd Jul 2026354 PMAQI
3rd Jul 2026365 PMAQI
3rd Jul 2026286 PMAQI
3rd Jul 2026247 PMAQI
3rd Jul 2026238 PMAQI
3rd Jul 2026219 PMAQI
3rd Jul 20261510 PMAQI
3rd Jul 20261911 PMAQI
4th Jul 20263012 AMAQI
4th Jul 2026381 AMAQI
4th Jul 2026332 AMAQI
4th Jul 2026273 AMAQI
4th Jul 2026254 AMAQI

21°C13/28°C

4th Jul 2026265 AMAQI
4th Jul 2026196 AMAQI
4th Jul 2026177 AMAQI
4th Jul 2026218 AMAQI
4th Jul 2026219 AMAQI
4th Jul 20262510 AMAQI
4th Jul 20262511 AMAQI
4th Jul 20262512 PMAQI
4th Jul 2026201 PMAQI
4th Jul 2026232 PMAQI
4th Jul 2026353 PMAQI
4th Jul 2026354 PMAQI
4th Jul 2026285 PMAQI
4th Jul 2026246 PMAQI
4th Jul 2026207 PMAQI
4th Jul 2026208 PMAQI
4th Jul 2026209 PMAQI
4th Jul 20261910 PMAQI
4th Jul 20261911 PMAQI
5th Jul 20263712 AMAQI
5th Jul 2026391 AMAQI
5th Jul 2026322 AMAQI
5th Jul 2026283 AMAQI
5th Jul 2026224 AMAQI

23°C14/30°C

5th Jul 2026225 AMAQI
5th Jul 2026206 AMAQI
5th Jul 2026237 AMAQI
5th Jul 2026218 AMAQI
5th Jul 2026219 AMAQI
5th Jul 20261910 AMAQI
5th Jul 20261911 AMAQI
5th Jul 20261912 PMAQI
5th Jul 2026191 PMAQI
5th Jul 2026182 PMAQI
5th Jul 2026413 PMAQI
5th Jul 2026394 PMAQI
5th Jul 2026295 PMAQI
5th Jul 2026246 PMAQI
5th Jul 2026207 PMAQI
5th Jul 2026198 PMAQI
5th Jul 2026179 PMAQI
5th Jul 20261710 PMAQI
5th Jul 20262111 PMAQI
6th Jul 20262312 AMAQI
6th Jul 2026231 AMAQI
6th Jul 2026262 AMAQI
6th Jul 2026243 AMAQI
6th Jul 2026254 AMAQI

22°C14/30°C

6th Jul 2026245 AMAQI
6th Jul 2026276 AMAQI
6th Jul 2026287 AMAQI
6th Jul 2026298 AMAQI
6th Jul 2026309 AMAQI
6th Jul 20263310 AMAQI
6th Jul 20263111 AMAQI
6th Jul 20262612 PMAQI
6th Jul 2026261 PMAQI
6th Jul 2026282 PMAQI
6th Jul 2026313 PMAQI
6th Jul 2026304 PMAQI
6th Jul 2026315 PMAQI
6th Jul 2026296 PMAQI
6th Jul 2026277 PMAQI
6th Jul 2026278 PMAQI
6th Jul 2026239 PMAQI
6th Jul 20262610 PMAQI
6th Jul 20263111 PMAQI
7th Jul 20263012 AMAQI
7th Jul 2026351 AMAQI
7th Jul 2026322 AMAQI
7th Jul 2026293 AMAQI
7th Jul 2026284 AMAQI

23°C14/31°C

7th Jul 2026275 AMAQI
7th Jul 2026286 AMAQI
7th Jul 2026277 AMAQI
7th Jul 2026288 AMAQI
7th Jul 2026269 AMAQI
7th Jul 20263210 AMAQI
7th Jul 20262811 AMAQI
7th Jul 20262612 PMAQI
7th Jul 2026271 PMAQI
7th Jul 2026272 PMAQI
7th Jul 2026253 PMAQI
7th Jul 2026254 PMAQI
7th Jul 2026245 PMAQI
7th Jul 2026226 PMAQI
7th Jul 2026217 PMAQI
7th Jul 2026198 PMAQI
7th Jul 2026199 PMAQI
7th Jul 20262710 PMAQI
7th Jul 20263011 PMAQI
8th Jul 20262812 AMAQI
8th Jul 2026331 AMAQI
8th Jul 2026282 AMAQI
8th Jul 2026263 AMAQI
8th Jul 2026244 AMAQI

27°C18/35°C

8th Jul 2026235 AMAQI
8th Jul 2026216 AMAQI
8th Jul 2026217 AMAQI
8th Jul 2026228 AMAQI
8th Jul 2026209 AMAQI
8th Jul 20262010 AMAQI
8th Jul 20262111 AMAQI
8th Jul 20262212 PMAQI
8th Jul 2026251 PMAQI
8th Jul 2026262 PMAQI
8th Jul 2026263 PMAQI
8th Jul 2026244 PMAQI
8th Jul 2026225 PMAQI
8th Jul 2026236 PMAQI
8th Jul 2026227 PMAQI
8th Jul 2026198 PMAQI
8th Jul 2026189 PMAQI
8th Jul 20262110 PMAQI
8th Jul 20262311 PMAQI
9th Jul 20262212 AMAQI
9th Jul 2026221 AMAQI
9th Jul 2026202 AMAQI
9th Jul 2026243 AMAQI
9th Jul 2026234 AMAQI

24°C18/30°C

9th Jul 2026225 AMAQI
9th Jul 2026226 AMAQI
9th Jul 2026217 AMAQI
9th Jul 2026248 AMAQI
9th Jul 2026269 AMAQI
9th Jul 20262610 AMAQI
9th Jul 20262311 AMAQI
9th Jul 20262312 PMAQI
9th Jul 2026261 PMAQI
9th Jul 2026272 PMAQI
9th Jul 2026263 PMAQI
9th Jul 2026274 PMAQI
9th Jul 2026275 PMAQI
9th Jul 2026276 PMAQI
9th Jul 2026267 PMAQI
9th Jul 2026258 PMAQI
9th Jul 2026239 PMAQI
9th Jul 20262310 PMAQI
9th Jul 20262311 PMAQI
10th Jul 20262712 AMAQI
10th Jul 2026311 AMAQI
10th Jul 2026322 AMAQI
10th Jul 2026303 AMAQI
10th Jul 2026324 AMAQI

23°C14/30°C

10th Jul 2026325 AMAQI
10th Jul 2026316 AMAQI
10th Jul 2026347 AMAQI
10th Jul 2026348 AMAQI
10th Jul 2026349 AMAQI
10th Jul 20263310 AMAQI
10th Jul 20263411 AMAQI
10th Jul 20262912 PMAQI
10th Jul 2026301 PMAQI
10th Jul 2026302 PMAQI
10th Jul 2026313 PMAQI
10th Jul 2026334 PMAQI
10th Jul 2026345 PMAQI
10th Jul 2026356 PMAQI
10th Jul 2026317 PMAQI
10th Jul 2026318 PMAQI
10th Jul 2026299 PMAQI
10th Jul 20262910 PMAQI
10th Jul 20262911 PMAQI
11th Jul 20263112 AMAQI
11th Jul 2026441 AMAQI
11th Jul 2026332 AMAQI
11th Jul 2026313 AMAQI
11th Jul 2026304 AMAQI

24°C14/32°C

11th Jul 2026325 AMAQI
11th Jul 2026326 AMAQI
11th Jul 2026347 AMAQI
11th Jul 2026348 AMAQI
11th Jul 2026369 AMAQI
11th Jul 20263210 AMAQI
11th Jul 20263211 AMAQI
11th Jul 20262912 PMAQI
11th Jul 2026291 PMAQI
11th Jul 2026292 PMAQI
11th Jul 2026303 PMAQI
11th Jul 2026424 PMAQI
11th Jul 2026315 PMAQI
11th Jul 2026326 PMAQI
11th Jul 2026287 PMAQI
11th Jul 2026298 PMAQI
11th Jul 2026279 PMAQI
11th Jul 20262710 PMAQI
11th Jul 20262711 PMAQI
12th Jul 20262912 AMAQI
12th Jul 2026271 AMAQI
12th Jul 2026302 AMAQI
12th Jul 2026313 AMAQI
12th Jul 2026314 AMAQI

24°C16/30°C

12th Jul 2026325 AMAQI
12th Jul 2026316 AMAQI
12th Jul 2026317 AMAQI
12th Jul 2026318 AMAQI
12th Jul 2026329 AMAQI
12th Jul 20262910 AMAQI
12th Jul 20263211 AMAQI
12th Jul 20262712 PMAQI
12th Jul 2026281 PMAQI
12th Jul 2026272 PMAQI
12th Jul 2026283 PMAQI
12th Jul 2026264 PMAQI
12th Jul 2026305 PMAQI
12th Jul 2026316 PMAQI
12th Jul 2026307 PMAQI
12th Jul 2026308 PMAQI
12th Jul 2026269 PMAQI
12th Jul 20262410 PMAQI
12th Jul 20262711 PMAQI
13th Jul 20262812 AMAQI
13th Jul 2026311 AMAQI
13th Jul 2026312 AMAQI
13th Jul 2026313 AMAQI
13th Jul 2026334 AMAQI

22°C17/27°C

13th Jul 2026295 AMAQI
13th Jul 2026336 AMAQI
13th Jul 2026337 AMAQI
13th Jul 2026338 AMAQI
13th Jul 2026329 AMAQI
13th Jul 20263310 AMAQI
13th Jul 20263011 AMAQI
13th Jul 20262612 PMAQI
13th Jul 2026261 PMAQI
13th Jul 2026292 PMAQI
13th Jul 2026303 PMAQI
13th Jul 2026294 PMAQI
13th Jul 2026355 PMAQI
13th Jul 2026356 PMAQI
13th Jul 2026287 PMAQI
13th Jul 2026228 PMAQI
13th Jul 2026279 PMAQI
13th Jul 20263510 PMAQI
13th Jul 20263411 PMAQI
14th Jul 20263912 AMAQI
14th Jul 2026401 AMAQI
14th Jul 2026402 AMAQI
14th Jul 2026373 AMAQI
14th Jul 2026374 AMAQI

25°C15/35°C

14th Jul 2026345 AMAQI
14th Jul 2026336 AMAQI
14th Jul 2026337 AMAQI
14th Jul 2026398 AMAQI
14th Jul 2026349 AMAQI
14th Jul 20263010 AMAQI
14th Jul 20262911 AMAQI
14th Jul 20263012 PMAQI
14th Jul 2026371 PMAQI
14th Jul 2026332 PMAQI
14th Jul 2026363 PMAQI
14th Jul 2026374 PMAQI
14th Jul 2026365 PMAQI
14th Jul 2026386 PMAQI
14th Jul 2026347 PMAQI
14th Jul 2026378 PMAQI
14th Jul 2026359 PMAQI
14th Jul 20263310 PMAQI
14th Jul 20263411 PMAQI
15th Jul 20262712 AMAQI
15th Jul 2026291 AMAQI
15th Jul 2026252 AMAQI
15th Jul 2026253 AMAQI
15th Jul 2026254 AMAQI

27°C20/33°C

15th Jul 2026235 AMAQI
15th Jul 2026246 AMAQI
15th Jul 2026247 AMAQI
15th Jul 2026258 AMAQI
15th Jul 2026289 AMAQI
15th Jul 20263010 AMAQI
15th Jul 20263211 AMAQI
15th Jul 20263212 PMAQI
15th Jul 2026341 PMAQI
15th Jul 2026322 PMAQI
15th Jul 2026273 PMAQI
15th Jul 2026314 PMAQI
15th Jul 2026295 PMAQI
15th Jul 2026336 PMAQI
15th Jul 2026307 PMAQI
15th Jul 2026338 PMAQI
15th Jul 2026299 PMAQI
15th Jul 20264710 PMAQI
15th Jul 20264211 PMAQI
16th Jul 20263912 AMAQI
16th Jul 2026371 AMAQI
16th Jul 2026282 AMAQI
16th Jul 2026253 AMAQI
16th Jul 2026274 AMAQI

29°C20/36°C

16th Jul 2026295 AMAQI
16th Jul 2026246 AMAQI
16th Jul 2026307 AMAQI
16th Jul 2026308 AMAQI
16th Jul 2026359 AMAQI
16th Jul 20263310 AMAQI
16th Jul 20263511 AMAQI
16th Jul 20263412 PMAQI
16th Jul 2026551 PMAQI
16th Jul 2026472 PMAQI
16th Jul 2026463 PMAQI
16th Jul 2026454 PMAQI
16th Jul 2026355 PMAQI
16th Jul 2026336 PMAQI
16th Jul 2026317 PMAQI
16th Jul 2026318 PMAQI
16th Jul 2026279 PMAQI
16th Jul 20264010 PMAQI
16th Jul 20263811 PMAQI
17th Jul 20266812 AMAQI
17th Jul 2026601 AMAQI
17th Jul 2026862 AMAQI
17th Jul 20262443 AMAQI
17th Jul 20261324 AMAQI

29°C22/37°C

17th Jul 20261065 AMAQI
17th Jul 2026916 AMAQI
17th Jul 2026857 AMAQI
17th Jul 2026678 AMAQI
17th Jul 2026599 AMAQI
17th Jul 20265810 AMAQI
17th Jul 20265711 AMAQI
17th Jul 20265412 PMAQI
17th Jul 2026691 PMAQI
17th Jul 2026532 PMAQI
17th Jul 2026693 PMAQI
17th Jul 2026704 PMAQI
17th Jul 2026905 PMAQI
17th Jul 20261176 PMAQI
17th Jul 2026937 PMAQI
17th Jul 2026858 PMAQI
17th Jul 2026759 PMAQI
17th Jul 20267510 PMAQI
17th Jul 20266611 PMAQI
18th Jul 20266212 AMAQI
18th Jul 2026611 AMAQI
18th Jul 2026542 AMAQI
18th Jul 2026493 AMAQI
18th Jul 2026574 AMAQI

25°C18/32°C

18th Jul 2026465 AMAQI
18th Jul 2026576 AMAQI
18th Jul 2026587 AMAQI
18th Jul 2026578 AMAQI
18th Jul 2026569 AMAQI
18th Jul 20265310 AMAQI
18th Jul 20264911 AMAQI
18th Jul 20265512 PMAQI
18th Jul 2026541 PMAQI
18th Jul 2026522 PMAQI
18th Jul 2026523 PMAQI
18th Jul 2026454 PMAQI
18th Jul 2026505 PMAQI
18th Jul 2026546 PMAQI
18th Jul 2026437 PMAQI
18th Jul 2026558 PMAQI
18th Jul 2026619 PMAQI
18th Jul 20267710 PMAQI
18th Jul 20266511 PMAQI
19th Jul 20265612 AMAQI
19th Jul 2026531 AMAQI
19th Jul 2026412 AMAQI
19th Jul 2026443 AMAQI
19th Jul 2026454 AMAQI

24°C16/31°C

19th Jul 2026435 AMAQI
19th Jul 2026386 AMAQI
19th Jul 2026387 AMAQI
19th Jul 2026458 AMAQI
19th Jul 2026519 AMAQI
19th Jul 20263910 AMAQI
19th Jul 20264911 AMAQI
19th Jul 20264712 PMAQI
19th Jul 2026631 PMAQI
19th Jul 2026542 PMAQI
19th Jul 2026453 PMAQI
19th Jul 2026474 PMAQI
19th Jul 2026435 PMAQI
19th Jul 2026446 PMAQI
19th Jul 2026437 PMAQI
19th Jul 2026418 PMAQI
19th Jul 2026499 PMAQI
19th Jul 20265510 PMAQI
19th Jul 20265911 PMAQI
20th Jul 20265912 AMAQI
20th Jul 2026601 AMAQI
20th Jul 2026452 AMAQI
20th Jul 2026563 AMAQI
20th Jul 2026614 AMAQI

24°C14/32°C

20th Jul 2026615 AMAQI
20th Jul 2026556 AMAQI
20th Jul 2026577 AMAQI
20th Jul 2026618 AMAQI
20th Jul 2026659 AMAQI
20th Jul 20266310 AMAQI
20th Jul 20265911 AMAQI
20th Jul 20265712 PMAQI
20th Jul 2026591 PMAQI
20th Jul 2026602 PMAQI
20th Jul 2026603 PMAQI
20th Jul 2026604 PMAQI
20th Jul 2026535 PMAQI
20th Jul 2026636 PMAQI
20th Jul 2026707 PMAQI
20th Jul 2026788 PMAQI
20th Jul 2026749 PMAQI
20th Jul 20269010 PMAQI
20th Jul 20269411 PMAQI
21st Jul 202610912 AMAQI
21st Jul 20261061 AMAQI
21st Jul 2026922 AMAQI
21st Jul 2026833 AMAQI
21st Jul 2026804 AMAQI

25°C19/31°C

21st Jul 2026855 AMAQI
21st Jul 2026866 AMAQI
21st Jul 2026957 AMAQI
21st Jul 20261008 AMAQI
21st Jul 20261009 AMAQI
21st Jul 202610710 AMAQI
21st Jul 202615211 AMAQI
21st Jul 202612112 PMAQI
21st Jul 20261201 PMAQI
21st Jul 20261122 PMAQI
21st Jul 20261093 PMAQI
21st Jul 20261034 PMAQI
21st Jul 2026975 PMAQI
21st Jul 2026886 PMAQI
21st Jul 2026867 PMAQI
21st Jul 2026938 PMAQI
21st Jul 2026939 PMAQI
21st Jul 202610110 PMAQI
21st Jul 202610311 PMAQI
22nd Jul 202610412 AMAQI
22nd Jul 20261101 AMAQI
22nd Jul 20261092 AMAQI
22nd Jul 20261063 AMAQI
22nd Jul 20261084 AMAQI

26°C16/35°C

22nd Jul 20261075 AMAQI
22nd Jul 20261016 AMAQI
22nd Jul 20261007 AMAQI
22nd Jul 20261038 AMAQI
22nd Jul 20261109 AMAQI
22nd Jul 202611210 AMAQI
22nd Jul 202611011 AMAQI
22nd Jul 202611212 PMAQI
22nd Jul 20261071 PMAQI
22nd Jul 20261082 PMAQI
22nd Jul 20261053 PMAQI
22nd Jul 20261074 PMAQI
22nd Jul 20261055 PMAQI
22nd Jul 20261046 PMAQI
22nd Jul 20261047 PMAQI
22nd Jul 20261108 PMAQI
22nd Jul 20261119 PMAQI
22nd Jul 202611810 PMAQI
22nd Jul 202612611 PMAQI
23rd Jul 202612412 AMAQI
23rd Jul 20261251 AMAQI
23rd Jul 20261232 AMAQI
23rd Jul 20261193 AMAQI
23rd Jul 20261164 AMAQI

30°C21/38°C

23rd Jul 20261115 AMAQI
23rd Jul 20261136 AMAQI
23rd Jul 20261137 AMAQI
23rd Jul 20261008 AMAQI
23rd Jul 2026999 AMAQI
23rd Jul 20269610 AMAQI
23rd Jul 20269111 AMAQI
23rd Jul 20268912 PMAQI
23rd Jul 2026931 PMAQI
23rd Jul 2026932 PMAQI
23rd Jul 2026913 PMAQI
23rd Jul 2026864 PMAQI
23rd Jul 2026915 PMAQI
23rd Jul 2026966 PMAQI
23rd Jul 2026967 PMAQI
23rd Jul 20261138 PMAQI
23rd Jul 20261229 PMAQI
23rd Jul 202613610 PMAQI
23rd Jul 202611611 PMAQI
24th Jul 20269712 AMAQI
24th Jul 2026891 AMAQI
24th Jul 2026802 AMAQI
24th Jul 2026813 AMAQI
24th Jul 2026694 AMAQI

28°C21/35°C

24th Jul 2026605 AMAQI
24th Jul 2026596 AMAQI
24th Jul 2026577 AMAQI
24th Jul 2026618 AMAQI
24th Jul 2026609 AMAQI
24th Jul 20266210 AMAQI
24th Jul 20268411 AMAQI
24th Jul 20268712 PMAQI
24th Jul 2026871 PMAQI
24th Jul 2026732 PMAQI
24th Jul 2026703 PMAQI
24th Jul 2026634 PMAQI
24th Jul 2026645 PMAQI
24th Jul 2026666 PMAQI
24th Jul 2026607 PMAQI
24th Jul 2026588 PMAQI
24th Jul 2026639 PMAQI
24th Jul 20266810 PMAQI
24th Jul 20264911 PMAQI
25th Jul 20265312 AMAQI
25th Jul 2026531 AMAQI
25th Jul 2026542 AMAQI
25th Jul 2026543 AMAQI
25th Jul 2026584 AMAQI

28°C19/35°C

25th Jul 2026485 AMAQI
25th Jul 2026516 AMAQI
25th Jul 2026517 AMAQI
25th Jul 2026528 AMAQI
25th Jul 2026509 AMAQI
25th Jul 20266110 AMAQI
25th Jul 20266111 AMAQI
25th Jul 20266112 PMAQI
25th Jul 2026521 PMAQI
25th Jul 2026522 PMAQI
25th Jul 2026613 PMAQI
25th Jul 2026654 PMAQI
25th Jul 2026635 PMAQI
25th Jul 2026636 PMAQI
25th Jul 2026737 PMAQI
25th Jul 2026668 PMAQI
25th Jul 2026619 PMAQI
25th Jul 20265210 PMAQI
25th Jul 20265011 PMAQI
26th Jul 20265212 AMAQI
26th Jul 2026601 AMAQI
26th Jul 2026522 AMAQI
26th Jul 2026463 AMAQI
26th Jul 2026574 AMAQI

25°C18/32°C

26th Jul 2026575 AMAQI
26th Jul 2026606 AMAQI
26th Jul 2026627 AMAQI
26th Jul 2026618 AMAQI
26th Jul 2026489 AMAQI
26th Jul 20265810 AMAQI
26th Jul 20265511 AMAQI
26th Jul 20265712 PMAQI
26th Jul 2026671 PMAQI
26th Jul 2026662 PMAQI
26th Jul 2026693 PMAQI
26th Jul 2026694 PMAQI
26th Jul 2026625 PMAQI
26th Jul 2026536 PMAQI
26th Jul 2026627 PMAQI
26th Jul 2026638 PMAQI
26th Jul 2026759 PMAQI
26th Jul 20268510 PMAQI
26th Jul 20268111 PMAQI
27th Jul 20266312 AMAQI
27th Jul 2026701 AMAQI
27th Jul 2026612 AMAQI
27th Jul 2026573 AMAQI
27th Jul 2026554 AMAQI

22°C15/30°C

27th Jul 2026595 AMAQI
27th Jul 2026536 AMAQI
27th Jul 2026547 AMAQI
27th Jul 2026578 AMAQI
27th Jul 2026559 AMAQI
27th Jul 20265510 AMAQI
27th Jul 20265511 AMAQI
27th Jul 20265212 PMAQI
27th Jul 2026701 PMAQI
27th Jul 2026682 PMAQI
27th Jul 2026693 PMAQI
27th Jul 2026774 PMAQI
27th Jul 2026795 PMAQI
27th Jul 2026816 PMAQI
27th Jul 2026787 PMAQI
27th Jul 2026778 PMAQI
27th Jul 2026779 PMAQI
27th Jul 20267710 PMAQI
27th Jul 20267511 PMAQI
28th Jul 20268012 AMAQI
28th Jul 2026781 AMAQI
28th Jul 2026782 AMAQI
28th Jul 2026783 AMAQI
28th Jul 2026794 AMAQI

23°C15/31°C

28th Jul 2026705 AMAQI
28th Jul 2026666 AMAQI
28th Jul 2026677 AMAQI
28th Jul 2026758 AMAQI
28th Jul 2026759 AMAQI
28th Jul 20267310 AMAQI
28th Jul 20267111 AMAQI
28th Jul 20267212 PMAQI
28th Jul 2026701 PMAQI
28th Jul 2026722 PMAQI
28th Jul 2026893 PMAQI
28th Jul 20261144 PMAQI
28th Jul 20261205 PMAQI
28th Jul 20261086 PMAQI
28th Jul 2026907 PMAQI
28th Jul 2026808 PMAQI
28th Jul 2026699 PMAQI
28th Jul 20266310 PMAQI
28th Jul 20266711 PMAQI
29th Jul 20266212 AMAQI
29th Jul 2026581 AMAQI
29th Jul 2026442 AMAQI
29th Jul 2026443 AMAQI
29th Jul 2026734 AMAQI

23°C16/30°C

29th Jul 2026675 AMAQI
29th Jul 2026616 AMAQI
29th Jul 2026767 AMAQI
29th Jul 2026888 AMAQI
29th Jul 2026829 AMAQI
29th Jul 20267110 AMAQI
29th Jul 20266011 AMAQI
29th Jul 20265012 PMAQI
29th Jul 2026551 PMAQI
29th Jul 2026662 PMAQI
29th Jul 2026643 PMAQI
29th Jul 2026514 PMAQI
29th Jul 2026515 PMAQI
29th Jul 2026536 PMAQI
29th Jul 2026697 PMAQI
29th Jul 2026668 PMAQI
29th Jul 2026639 PMAQI
29th Jul 20266810 PMAQI
29th Jul 20267311 PMAQI
30th Jul 20267112 AMAQI
30th Jul 2026671 AMAQI
30th Jul 2026632 AMAQI
30th Jul 2026593 AMAQI
30th Jul 2026664 AMAQI

22°C14/29°C

30th Jul 2026675 AMAQI
30th Jul 2026606 AMAQI
30th Jul 2026587 AMAQI
30th Jul 2026598 AMAQI
30th Jul 2026619 AMAQI
30th Jul 20266410 AMAQI
30th Jul 20266311 AMAQI
30th Jul 20266112 PMAQI
30th Jul 2026621 PMAQI
30th Jul 2026642 PMAQI
30th Jul 2026633 PMAQI
30th Jul 2026664 PMAQI
30th Jul 2026655 PMAQI
30th Jul 2026836 PMAQI
30th Jul 2026827 PMAQI
30th Jul 2026838 PMAQI
30th Jul 2026879 PMAQI
30th Jul 202610110 PMAQI
30th Jul 202610511 PMAQI
31st Jul 202610812 AMAQI
31st Jul 20261071 AMAQI
31st Jul 2026912 AMAQI
31st Jul 2026843 AMAQI
31st Jul 2026684 AMAQI

23°C15/31°C

31st Jul 2026635 AMAQI
5 AM
31st Jul 2026596 AMAQI
31st Jul 2026617 AMAQI
31st Jul 2026648 AMAQI
31st Jul 2026809 AMAQI
31st Jul 20267810 AMAQI
31st Jul 20267911 AMAQI
31st Jul 20268112 PMAQI
12 PM
31st Jul 2026891 PMAQI
31st Jul 2026862 PMAQI
31st Jul 2026893 PMAQI
31st Jul 2026854 PMAQI
31st Jul 2026725 PMAQI
31st Jul 2026686 PMAQI
31st Jul 2026597 PMAQI
31st Jul 2026708 PMAQI
8 PM
31st Jul 2026679 PMAQI
31st Jul 20268810 PMAQI
31st Jul 20267511 PMAQI
12 AM
4 AM

25°C16/35°C

Day time
Avg. Highest Time
3 PM - 6 PM

52AQI

4 hours / Day
120 hours / Month
Avg. Lowest Time
6 AM - 7 AM

47AQI

2 hours / Day
60 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 3 PM to 6 PM (Avg. 52), while the lowest AQI was between 6 AM to 7 AM (Avg. 47).
Night time
Avg. Highest Time
12 AM - 1 AM

55AQI

2 hours / Day
60 hours / Month
Avg. Lowest Time
2 AM

50AQI

1 hours / Day
30 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 12 AM to 1 AM (Avg. 55), while the lowest AQI was between 2 AM to 2 AM (Avg. 50).

2026 Days Vs Air Quality

Walla Walla, Washington, United States

2026

92%

192

7%

14

0.9%

2

Total number of days with different AQI categories in last 212 days in 2026 (153 days remaining)

Good
192 Days
Moderate
14 Days
Poor
2 Days
Unhealthy
0 Days
Severe
0 Days
Hazardous
0 Days

Under WHO’s Safe Air Quality Limits: 92%

Health Risk Level:

Very Low

In 2026, 92% of 212 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

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
54AQI (US)
2nd January 2026
38AQI (US)
3rd January 2026
32AQI (US)
4th January 2026
25AQI (US)
5th January 2026
22AQI (US)
6th January 2026
16AQI (US)
7th January 2026
13AQI (US)
8th January 2026
18AQI (US)
9th January 2026
15AQI (US)
10th January 2026
26AQI (US)
11th January 2026
38AQI (US)
12th January 2026
30AQI (US)
13th January 2026
20AQI (US)
14th January 2026
33AQI (US)
15th January 2026
39AQI (US)
16th January 2026
32AQI (US)
17th January 2026
17AQI (US)
18th January 2026
23AQI (US)
19th January 2026
28AQI (US)
20th January 2026
27AQI (US)
21st January 2026
30AQI (US)
22nd January 2026
37AQI (US)
23rd January 2026
45AQI (US)
24th January 2026
39AQI (US)
25th January 2026
40AQI (US)
26th January 2026
40AQI (US)
27th January 2026
34AQI (US)
28th January 2026
35AQI (US)
29th January 2026
39AQI (US)
30th January 2026
47AQI (US)
31st January 2026
35AQI (US)
1st February 2026
40AQI (US)
2nd February 2026
49AQI (US)
3rd February 2026
46AQI (US)
4th February 2026
41AQI (US)
5th February 2026
41AQI (US)
6th February 2026
34AQI (US)
7th February 2026
31AQI (US)
8th February 2026
40AQI (US)
9th February 2026
44AQI (US)
10th February 2026
40AQI (US)
11th February 2026
34AQI (US)
12th February 2026
29AQI (US)
13th February 2026
30AQI (US)
14th February 2026
32AQI (US)
15th February 2026
32AQI (US)
16th February 2026
39AQI (US)
17th February 2026
41AQI (US)
18th February 2026
38AQI (US)
19th February 2026
34AQI (US)
20th February 2026
33AQI (US)
21st February 2026
27AQI (US)
22nd February 2026
33AQI (US)
23rd February 2026
32AQI (US)
24th February 2026
42AQI (US)
25th February 2026
40AQI (US)
26th February 2026
32AQI (US)
27th February 2026
33AQI (US)
28th February 2026
30AQI (US)
1st March 2026
29AQI (US)
2nd March 2026
44AQI (US)
3rd March 2026
37AQI (US)
4th March 2026
39AQI (US)
5th March 2026
40AQI (US)
6th March 2026
32AQI (US)
7th March 2026
35AQI (US)
8th March 2026
43AQI (US)
9th March 2026
40AQI (US)
10th March 2026
32AQI (US)
11th March 2026
38AQI (US)
12th March 2026
46AQI (US)
13th March 2026
41AQI (US)
14th March 2026
36AQI (US)
15th March 2026
28AQI (US)
16th March 2026
23AQI (US)
17th March 2026
26AQI (US)
18th March 2026
27AQI (US)
19th March 2026
30AQI (US)
20th March 2026
36AQI (US)
21st March 2026
38AQI (US)
22nd March 2026
33AQI (US)
23rd March 2026
33AQI (US)
24th March 2026
29AQI (US)
25th March 2026
31AQI (US)
26th March 2026
25AQI (US)
27th March 2026
20AQI (US)
28th March 2026
23AQI (US)
29th March 2026
18AQI (US)
30th March 2026
25AQI (US)
31st March 2026
25AQI (US)
1st April 2026
24AQI (US)
2nd April 2026
27AQI (US)
3rd April 2026
24AQI (US)
4th April 2026
27AQI (US)
5th April 2026
27AQI (US)
6th April 2026
24AQI (US)
7th April 2026
23AQI (US)
8th April 2026
28AQI (US)
9th April 2026
28AQI (US)
10th April 2026
29AQI (US)
11th April 2026
30AQI (US)
12th April 2026
25AQI (US)
13th April 2026
33AQI (US)
14th April 2026
35AQI (US)
15th April 2026
31AQI (US)
16th April 2026
29AQI (US)
17th April 2026
18th April 2026
23AQI (US)
19th April 2026
23AQI (US)
20th April 2026
24AQI (US)
21st April 2026
34AQI (US)
22nd April 2026
23rd April 2026
22AQI (US)
24th April 2026
23AQI (US)
25th April 2026
24AQI (US)
26th April 2026
27AQI (US)
27th April 2026
23AQI (US)
28th April 2026
23AQI (US)
29th April 2026
22AQI (US)
30th April 2026
23AQI (US)
1st May 2026
25AQI (US)
2nd May 2026
24AQI (US)
3rd May 2026
23AQI (US)
4th May 2026
29AQI (US)
5th May 2026
34AQI (US)
6th May 2026
39AQI (US)
7th May 2026
32AQI (US)
8th May 2026
32AQI (US)
9th May 2026
10th May 2026
25AQI (US)
11th May 2026
27AQI (US)
12th May 2026
25AQI (US)
13th May 2026
43AQI (US)
14th May 2026
32AQI (US)
15th May 2026
39AQI (US)
16th May 2026
49AQI (US)
17th May 2026
53AQI (US)
18th May 2026
51AQI (US)
19th May 2026
48AQI (US)
20th May 2026
48AQI (US)
21st May 2026
41AQI (US)
22nd May 2026
40AQI (US)
23rd May 2026
46AQI (US)
24th May 2026
46AQI (US)
25th May 2026
43AQI (US)
26th May 2026
29AQI (US)
27th May 2026
21AQI (US)
28th May 2026
26AQI (US)
29th May 2026
26AQI (US)
30th May 2026
23AQI (US)
31st May 2026
22AQI (US)
1st June 2026
26AQI (US)
2nd June 2026
21AQI (US)
3rd June 2026
24AQI (US)
4th June 2026
20AQI (US)
5th June 2026
19AQI (US)
6th June 2026
22AQI (US)
7th June 2026
20AQI (US)
8th June 2026
25AQI (US)
9th June 2026
26AQI (US)
10th June 2026
27AQI (US)
11th June 2026
21AQI (US)
12th June 2026
27AQI (US)
13th June 2026
20AQI (US)
14th June 2026
20AQI (US)
15th June 2026
25AQI (US)
16th June 2026
37AQI (US)
17th June 2026
31AQI (US)
18th June 2026
24AQI (US)
19th June 2026
27AQI (US)
20th June 2026
29AQI (US)
21st June 2026
20AQI (US)
22nd June 2026
24AQI (US)
23rd June 2026
36AQI (US)
24th June 2026
30AQI (US)
25th June 2026
30AQI (US)
26th June 2026
27AQI (US)
27th June 2026
27AQI (US)
28th June 2026
28AQI (US)
29th June 2026
26AQI (US)
30th June 2026
22AQI (US)
1st July 2026
19AQI (US)
2nd July 2026
18AQI (US)
3rd July 2026
25AQI (US)
4th July 2026
25AQI (US)
5th July 2026
25AQI (US)
6th July 2026
27AQI (US)
7th July 2026
27AQI (US)
8th July 2026
23AQI (US)
9th July 2026
24AQI (US)
10th July 2026
31AQI (US)
11th July 2026
32AQI (US)
12th July 2026
29AQI (US)
13th July 2026
30AQI (US)
14th July 2026
35AQI (US)
15th July 2026
30AQI (US)
16th July 2026
35AQI (US)
17th July 2026
85AQI (US)
18th July 2026
55AQI (US)
19th July 2026
47AQI (US)
20th July 2026
63AQI (US)
21st July 2026
100AQI (US)
22nd July 2026
108AQI (US)
23rd July 2026
107AQI (US)
24th July 2026
70AQI (US)
25th July 2026
57AQI (US)
26th July 2026
62AQI (US)
27th July 2026
66AQI (US)
28th July 2026
79AQI (US)
29th July 2026
63AQI (US)
30th July 2026
70AQI (US)
31st July 2026
1st August 2026
2nd August 2026
3rd August 2026
4th August 2026
5th August 2026
6th August 2026
7th August 2026
8th August 2026
9th August 2026
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

31AQI (US)

36AQI (US)

32AQI (US)

26AQI (US)

35AQI (US)

25AQI (US)

49AQI (US)

No. of days

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

202634AQI (US)

30
1
28
31
28
28
2
30
17
11
2
192
14
2

Highest AQI (US) recorded in

July

49AQI (US)

Lowest AQI (US) recorded in

June

25AQI (US)

202528AQI (US)

29
2
28
31
30
31
30
31
23
8
17
13
31
26
4
28
3
335
30

Highest AQI (US) recorded in

September

48AQI (US)

Lowest AQI (US) recorded in

May

16AQI (US)

202421AQI (US)

25
5
29
31
30
31
29
27
4
26
5
29
1
31
27
3
31
346
18

Highest AQI (US) recorded in

August

31AQI (US)

Lowest AQI (US) recorded in

May

8AQI (US)

202324AQI (US)

31
27
1
30
30
29
2
29
1
31
24
5
2
30
29
2
27
2
31
348
13
2

Highest AQI (US) recorded in

August

49AQI (US)

Lowest AQI (US) recorded in

April

12AQI (US)

202223AQI (US)

29
21
31
30
31
30
21
1
20
5
4
22
9
20
10
29
2
285
26
4

Highest AQI (US) recorded in

September

45AQI (US)

Lowest AQI (US) recorded in

May

8AQI (US)

202123AQI (US)

28
1
28
31
30
31
30
25
6
20
6
3
2
26
4
31
27
3
31
338
20
3
2

Highest AQI (US) recorded in

August

57AQI (US)

Lowest AQI (US) recorded in

May

11AQI (US)

202028AQI (US)

13
20
18
30
31
31
18
4
3
4
1
30
1
30
29
2
250
7
3
4
1

Highest AQI (US) recorded in

September

85AQI (US)

Lowest AQI (US) recorded in

June

11AQI (US)

Most & Least Polluted Years Over the Last 7 Years

Most Polluted Year Recorded
2026(Avg.)
34AQI (US)
Least Polluted Year Recorded
2024(Avg.)
21AQI (US)

Walla Walla's annual 2026 AQI (US) (34) shows an average percentage change of 40.3% (worsened AQI (US)) compared to previous years: 2020 (28), 2021 (23), 2022 (23), 2023 (24), 2024 (21), 2025 (28).