Country Background
HistoryAQIPM₂.₅PM₁₀COSO₂NO₂O₃

Hill St, Pullman, 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

Hill St, Pullman, Washington, United States

2022
2023
2024
2025
2026
AQI
.
Days

AQI Trends: Highest and Lowest

Highest AQI recorded on
20th Aug 2023
315AQI
Lowest AQI recorded on
10th Aug 2023
13AQI

Same Day Analysis (1st August):
On this day, AQI across the 5 years varied significantly: 2026 ranks 1st highest AQI at 59 of Moderate air quality on the same day.

Day & Night AQI Trend: 1st Aug - 2nd Aug 2026

Hill St, Pullman, Washington, United States

AQI
Day
Night
.

5 AM1st Aug 2026

8 PM

4 AM2nd Aug 2026

Day time
Avg. Highest Time
6PM1st Aug

70AQI

Avg. Lowest Time
7PM1st Aug

53AQI

Night time
Avg. Highest Time
10PM1st Aug

62AQI

Avg. Lowest Time
12AM2nd Aug

52AQI

In the last 24 hours,

Hill St's AQI reached its highest point of 70 at 6 PM during the Day, while the lowest point, 52, was recorded at 12 AM during the Night between 1st Aug and 2nd Aug 2026.

Day & Night AQI Trend : Jul - Aug 2026

Hill St, Pullman, Washington, United States

JulAug
04th - 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 - 01st01st - 02nd02nd
Day
Night
4th Jul 2026265 AMAQI
4th Jul 2026266 AMAQI
4th Jul 2026267 AMAQI
4th Jul 2026278 AMAQI
4th Jul 2026269 AMAQI
4th Jul 20262810 AMAQI
4th Jul 20262611 AMAQI
4th Jul 20262412 PMAQI
4th Jul 2026261 PMAQI
4th Jul 2026272 PMAQI
4th Jul 2026243 PMAQI
4th Jul 2026244 PMAQI
4th Jul 2026205 PMAQI
4th Jul 2026216 PMAQI
4th Jul 2026217 PMAQI
4th Jul 2026228 PMAQI
4th Jul 2026219 PMAQI
4th Jul 20262410 PMAQI
4th Jul 20262811 PMAQI
5th Jul 20262712 AMAQI
5th Jul 2026261 AMAQI
5th Jul 2026262 AMAQI
5th Jul 2026233 AMAQI
5th Jul 2026254 AMAQI

24°C15/32°C

5th Jul 2026265 AMAQI
5th Jul 2026226 AMAQI
5th Jul 2026307 AMAQI
5th Jul 2026318 AMAQI
5th Jul 2026309 AMAQI
5th Jul 20262610 AMAQI
5th Jul 20262611 AMAQI
5th Jul 20262612 PMAQI
5th Jul 2026251 PMAQI
5th Jul 2026282 PMAQI
5th Jul 2026263 PMAQI
5th Jul 2026264 PMAQI
5th Jul 2026215 PMAQI
5th Jul 2026236 PMAQI
5th Jul 2026217 PMAQI
5th Jul 2026198 PMAQI
5th Jul 2026229 PMAQI
5th Jul 20262210 PMAQI
5th Jul 20262711 PMAQI
6th Jul 20262712 AMAQI
6th Jul 2026201 AMAQI
6th Jul 2026222 AMAQI
6th Jul 2026223 AMAQI
6th Jul 2026284 AMAQI

24°C15/32°C

6th Jul 2026285 AMAQI
6th Jul 2026286 AMAQI
6th Jul 2026327 AMAQI
6th Jul 2026318 AMAQI
6th Jul 2026329 AMAQI
6th Jul 20263110 AMAQI
6th Jul 20263211 AMAQI
6th Jul 20263012 PMAQI
6th Jul 2026321 PMAQI
6th Jul 2026322 PMAQI
6th Jul 2026283 PMAQI
6th Jul 2026324 PMAQI
6th Jul 2026275 PMAQI
6th Jul 2026286 PMAQI
6th Jul 2026247 PMAQI
6th Jul 2026248 PMAQI
6th Jul 2026249 PMAQI
6th Jul 20262810 PMAQI
6th Jul 20263011 PMAQI
7th Jul 20262612 AMAQI
7th Jul 2026281 AMAQI
7th Jul 2026322 AMAQI
7th Jul 2026293 AMAQI
7th Jul 2026294 AMAQI

25°C12/34°C

7th Jul 2026305 AMAQI
7th Jul 2026286 AMAQI
7th Jul 2026277 AMAQI
7th Jul 2026338 AMAQI
7th Jul 2026329 AMAQI
7th Jul 20263010 AMAQI
7th Jul 20263011 AMAQI
7th Jul 20263212 PMAQI
7th Jul 2026321 PMAQI
7th Jul 2026322 PMAQI
7th Jul 2026303 PMAQI
7th Jul 2026324 PMAQI
7th Jul 2026305 PMAQI
7th Jul 2026286 PMAQI
7th Jul 2026267 PMAQI
7th Jul 2026258 PMAQI
7th Jul 2026269 PMAQI
7th Jul 20262510 PMAQI
7th Jul 20262811 PMAQI
8th Jul 20263012 AMAQI
8th Jul 2026241 AMAQI
8th Jul 2026242 AMAQI
8th Jul 2026203 AMAQI
8th Jul 2026204 AMAQI

28°C16/37°C

8th Jul 2026235 AMAQI
8th Jul 2026256 AMAQI
8th Jul 2026277 AMAQI
8th Jul 2026308 AMAQI
8th Jul 2026329 AMAQI
8th Jul 20263210 AMAQI
8th Jul 20263011 AMAQI
8th Jul 20263012 PMAQI
8th Jul 2026291 PMAQI
8th Jul 2026282 PMAQI
8th Jul 2026303 PMAQI
8th Jul 2026284 PMAQI
8th Jul 2026255 PMAQI
8th Jul 2026266 PMAQI
8th Jul 2026257 PMAQI
8th Jul 2026228 PMAQI
8th Jul 2026239 PMAQI
8th Jul 20262610 PMAQI
8th Jul 20262611 PMAQI
9th Jul 20262612 AMAQI
9th Jul 2026261 AMAQI
9th Jul 2026292 AMAQI
9th Jul 2026253 AMAQI
9th Jul 2026264 AMAQI

26°C20/33°C

9th Jul 2026265 AMAQI
9th Jul 2026286 AMAQI
9th Jul 2026297 AMAQI
9th Jul 2026318 AMAQI
9th Jul 2026299 AMAQI
9th Jul 20263110 AMAQI
9th Jul 20262811 AMAQI
9th Jul 20263012 PMAQI
9th Jul 2026301 PMAQI
9th Jul 2026302 PMAQI
9th Jul 2026303 PMAQI
9th Jul 2026304 PMAQI
9th Jul 2026325 PMAQI
9th Jul 2026326 PMAQI
9th Jul 2026287 PMAQI
9th Jul 2026298 PMAQI
9th Jul 2026289 PMAQI
9th Jul 20262410 PMAQI
9th Jul 20262411 PMAQI
10th Jul 20262612 AMAQI
10th Jul 2026301 AMAQI
10th Jul 2026322 AMAQI
10th Jul 2026323 AMAQI
10th Jul 2026324 AMAQI

25°C16/32°C

10th Jul 2026345 AMAQI
10th Jul 2026346 AMAQI
10th Jul 2026377 AMAQI
10th Jul 2026368 AMAQI
10th Jul 2026389 AMAQI
10th Jul 20263510 AMAQI
10th Jul 20263611 AMAQI
10th Jul 20262912 PMAQI
10th Jul 2026361 PMAQI
10th Jul 2026382 PMAQI
10th Jul 2026363 PMAQI
10th Jul 2026354 PMAQI
10th Jul 2026365 PMAQI
10th Jul 2026346 PMAQI
10th Jul 2026327 PMAQI
10th Jul 2026308 PMAQI
10th Jul 2026269 PMAQI
10th Jul 20262610 PMAQI
10th Jul 20262411 PMAQI
11th Jul 20262612 AMAQI
11th Jul 2026341 AMAQI
11th Jul 2026312 AMAQI
11th Jul 2026313 AMAQI
11th Jul 2026274 AMAQI

26°C16/34°C

11th Jul 2026325 AMAQI
11th Jul 2026326 AMAQI
11th Jul 2026367 AMAQI
11th Jul 2026348 AMAQI
11th Jul 2026329 AMAQI
11th Jul 20263410 AMAQI
11th Jul 20263211 AMAQI
11th Jul 20262612 PMAQI
11th Jul 2026321 PMAQI
11th Jul 2026322 PMAQI
11th Jul 2026343 PMAQI
11th Jul 2026324 PMAQI
11th Jul 2026325 PMAQI
11th Jul 2026316 PMAQI
11th Jul 2026307 PMAQI
11th Jul 2026288 PMAQI
11th Jul 2026239 PMAQI
11th Jul 20262310 PMAQI
11th Jul 20262411 PMAQI
12th Jul 20262612 AMAQI
12th Jul 2026291 AMAQI
12th Jul 2026312 AMAQI
12th Jul 2026323 AMAQI
12th Jul 2026284 AMAQI

26°C19/32°C

12th Jul 2026335 AMAQI
12th Jul 2026316 AMAQI
12th Jul 2026307 AMAQI
12th Jul 2026308 AMAQI
12th Jul 2026349 AMAQI
12th Jul 20263010 AMAQI
12th Jul 20263011 AMAQI
12th Jul 20262712 PMAQI
12th Jul 2026301 PMAQI
12th Jul 2026292 PMAQI
12th Jul 2026283 PMAQI
12th Jul 2026294 PMAQI
12th Jul 2026295 PMAQI
12th Jul 2026316 PMAQI
12th Jul 2026287 PMAQI
12th Jul 2026288 PMAQI
12th Jul 2026249 PMAQI
12th Jul 20262110 PMAQI
12th Jul 20262211 PMAQI
13th Jul 20262612 AMAQI
13th Jul 2026301 AMAQI
13th Jul 2026302 AMAQI
13th Jul 2026313 AMAQI
13th Jul 2026324 AMAQI

23°C19/29°C

13th Jul 2026325 AMAQI
13th Jul 2026336 AMAQI
13th Jul 2026327 AMAQI
13th Jul 2026328 AMAQI
13th Jul 2026329 AMAQI
13th Jul 20263410 AMAQI
13th Jul 20263211 AMAQI
13th Jul 20262712 PMAQI
13th Jul 2026321 PMAQI
13th Jul 2026312 PMAQI
13th Jul 2026323 PMAQI
13th Jul 2026294 PMAQI
13th Jul 2026365 PMAQI
13th Jul 2026346 PMAQI
13th Jul 2026297 PMAQI
13th Jul 2026268 PMAQI
13th Jul 2026229 PMAQI
13th Jul 20262310 PMAQI
13th Jul 20262111 PMAQI
14th Jul 20262412 AMAQI
14th Jul 2026301 AMAQI
14th Jul 2026312 AMAQI
14th Jul 2026323 AMAQI
14th Jul 2026344 AMAQI

26°C14/35°C

14th Jul 2026345 AMAQI
14th Jul 2026326 AMAQI
14th Jul 2026357 AMAQI
14th Jul 2026368 AMAQI
14th Jul 2026389 AMAQI
14th Jul 20263410 AMAQI
14th Jul 20263211 AMAQI
14th Jul 20262712 PMAQI
14th Jul 2026311 PMAQI
14th Jul 2026302 PMAQI
14th Jul 2026323 PMAQI
14th Jul 2026324 PMAQI
14th Jul 2026305 PMAQI
14th Jul 2026306 PMAQI
14th Jul 2026277 PMAQI
14th Jul 2026268 PMAQI
14th Jul 2026209 PMAQI
14th Jul 20262210 PMAQI
14th Jul 20262011 PMAQI
15th Jul 20262412 AMAQI
15th Jul 2026281 AMAQI
15th Jul 2026262 AMAQI
15th Jul 2026223 AMAQI
15th Jul 2026284 AMAQI

27°C20/33°C

15th Jul 2026285 AMAQI
15th Jul 2026296 AMAQI
15th Jul 2026267 AMAQI
15th Jul 2026278 AMAQI
15th Jul 2026289 AMAQI
15th Jul 20263110 AMAQI
15th Jul 20262711 AMAQI
15th Jul 20262812 PMAQI
15th Jul 2026301 PMAQI
15th Jul 2026302 PMAQI
15th Jul 2026293 PMAQI
15th Jul 2026304 PMAQI
15th Jul 2026305 PMAQI
15th Jul 2026316 PMAQI
15th Jul 2026317 PMAQI
15th Jul 2026308 PMAQI
15th Jul 2026269 PMAQI
15th Jul 20262510 PMAQI
15th Jul 20262411 PMAQI
16th Jul 20262612 AMAQI
16th Jul 2026261 AMAQI
16th Jul 2026302 AMAQI
16th Jul 2026303 AMAQI
16th Jul 2026284 AMAQI

29°C20/37°C

16th Jul 2026325 AMAQI
16th Jul 2026286 AMAQI
16th Jul 2026317 AMAQI
16th Jul 2026318 AMAQI
16th Jul 2026309 AMAQI
16th Jul 20263010 AMAQI
16th Jul 20263011 AMAQI
16th Jul 20263012 PMAQI
16th Jul 2026301 PMAQI
16th Jul 2026282 PMAQI
16th Jul 2026303 PMAQI
16th Jul 2026264 PMAQI
16th Jul 2026285 PMAQI
16th Jul 2026326 PMAQI
16th Jul 2026277 PMAQI
16th Jul 2026268 PMAQI
16th Jul 2026249 PMAQI
16th Jul 20262610 PMAQI
16th Jul 20262311 PMAQI
17th Jul 20262912 AMAQI
17th Jul 2026271 AMAQI
17th Jul 2026692 AMAQI
17th Jul 2026683 AMAQI
17th Jul 2026744 AMAQI

31°C22/39°C

17th Jul 2026695 AMAQI
17th Jul 2026786 AMAQI
17th Jul 2026747 AMAQI
17th Jul 2026768 AMAQI
17th Jul 2026669 AMAQI
17th Jul 20265310 AMAQI
17th Jul 20266911 AMAQI
17th Jul 20266412 PMAQI
17th Jul 2026591 PMAQI
17th Jul 2026572 PMAQI
17th Jul 2026623 PMAQI
17th Jul 2026564 PMAQI
17th Jul 2026575 PMAQI
17th Jul 2026596 PMAQI
17th Jul 2026517 PMAQI
17th Jul 2026558 PMAQI
17th Jul 2026629 PMAQI
17th Jul 20266310 PMAQI
17th Jul 20266211 PMAQI
18th Jul 20266212 AMAQI
18th Jul 2026631 AMAQI
18th Jul 2026562 AMAQI
18th Jul 2026533 AMAQI
18th Jul 2026654 AMAQI

26°C19/33°C

18th Jul 2026595 AMAQI
18th Jul 2026706 AMAQI
18th Jul 2026627 AMAQI
18th Jul 2026608 AMAQI
18th Jul 2026599 AMAQI
18th Jul 20265810 AMAQI
18th Jul 20266011 AMAQI
18th Jul 20266812 PMAQI
18th Jul 2026511 PMAQI
18th Jul 2026522 PMAQI
18th Jul 2026543 PMAQI
18th Jul 2026604 PMAQI
18th Jul 2026545 PMAQI
18th Jul 2026546 PMAQI
18th Jul 2026547 PMAQI
18th Jul 2026528 PMAQI
18th Jul 2026499 PMAQI
18th Jul 20265710 PMAQI
18th Jul 20264611 PMAQI
19th Jul 20265312 AMAQI
19th Jul 2026251 AMAQI
19th Jul 2026382 AMAQI
19th Jul 2026383 AMAQI
19th Jul 2026384 AMAQI

25°C17/32°C

19th Jul 2026425 AMAQI
19th Jul 2026466 AMAQI
19th Jul 2026487 AMAQI
19th Jul 2026538 AMAQI
19th Jul 2026519 AMAQI
19th Jul 20265710 AMAQI
19th Jul 20266811 AMAQI
19th Jul 20264812 PMAQI
19th Jul 2026571 PMAQI
19th Jul 2026582 PMAQI
19th Jul 2026563 PMAQI
19th Jul 2026524 PMAQI
19th Jul 2026485 PMAQI
19th Jul 2026746 PMAQI
19th Jul 2026737 PMAQI
19th Jul 2026678 PMAQI
19th Jul 2026669 PMAQI
19th Jul 20266710 PMAQI
19th Jul 20267111 PMAQI
20th Jul 20267312 AMAQI
20th Jul 2026721 AMAQI
20th Jul 2026512 AMAQI
20th Jul 2026583 AMAQI
20th Jul 2026654 AMAQI

25°C16/33°C

20th Jul 2026705 AMAQI
20th Jul 2026816 AMAQI
20th Jul 2026767 AMAQI
20th Jul 2026768 AMAQI
20th Jul 2026749 AMAQI
20th Jul 20267010 AMAQI
20th Jul 20266211 AMAQI
20th Jul 20265912 PMAQI
20th Jul 2026581 PMAQI
20th Jul 2026582 PMAQI
20th Jul 2026623 PMAQI
20th Jul 2026624 PMAQI
20th Jul 2026525 PMAQI
20th Jul 2026526 PMAQI
20th Jul 2026607 PMAQI
20th Jul 2026649 PMAQI
20th Jul 20267010 PMAQI
20th Jul 20266411 PMAQI
21st Jul 20266012 AMAQI
21st Jul 2026661 AMAQI
21st Jul 2026672 AMAQI
21st Jul 2026673 AMAQI
21st Jul 2026644 AMAQI

26°C17/34°C

21st Jul 2026715 AMAQI
21st Jul 2026696 AMAQI
21st Jul 2026697 AMAQI
21st Jul 2026818 AMAQI
21st Jul 2026769 AMAQI
21st Jul 20265510 AMAQI
21st Jul 20266411 AMAQI
21st Jul 20267812 PMAQI
21st Jul 2026761 PMAQI
21st Jul 2026782 PMAQI
21st Jul 2026663 PMAQI
21st Jul 2026664 PMAQI
21st Jul 2026675 PMAQI
21st Jul 2026676 PMAQI
21st Jul 2026677 PMAQI
21st Jul 2026748 PMAQI
21st Jul 2026609 PMAQI
21st Jul 20266210 PMAQI
21st Jul 20265911 PMAQI
22nd Jul 20265412 AMAQI
22nd Jul 2026701 AMAQI
22nd Jul 2026742 AMAQI
22nd Jul 2026783 AMAQI
22nd Jul 2026824 AMAQI

27°C18/37°C

22nd Jul 2026745 AMAQI
22nd Jul 2026746 AMAQI
22nd Jul 2026767 AMAQI
22nd Jul 2026748 AMAQI
22nd Jul 2026769 AMAQI
22nd Jul 20267410 AMAQI
22nd Jul 20267011 AMAQI
22nd Jul 20267412 PMAQI
22nd Jul 2026681 PMAQI
22nd Jul 2026702 PMAQI
22nd Jul 2026673 PMAQI
22nd Jul 2026784 PMAQI
22nd Jul 2026785 PMAQI
22nd Jul 2026786 PMAQI
22nd Jul 2026697 PMAQI
22nd Jul 2026608 PMAQI
22nd Jul 2026669 PMAQI
22nd Jul 20267210 PMAQI
22nd Jul 20266811 PMAQI
23rd Jul 20266612 AMAQI
23rd Jul 2026661 AMAQI
23rd Jul 2026702 AMAQI
23rd Jul 2026663 AMAQI
23rd Jul 2026634 AMAQI

30°C20/39°C

23rd Jul 2026725 AMAQI
23rd Jul 2026686 AMAQI
23rd Jul 2026827 AMAQI
23rd Jul 2026768 AMAQI
23rd Jul 2026789 AMAQI
23rd Jul 20266810 AMAQI
23rd Jul 20266711 AMAQI
23rd Jul 20266612 PMAQI
23rd Jul 2026741 PMAQI
23rd Jul 2026662 PMAQI
23rd Jul 2026503 PMAQI
23rd Jul 2026664 PMAQI
23rd Jul 2026685 PMAQI
23rd Jul 2026666 PMAQI
23rd Jul 2026707 PMAQI
23rd Jul 2026678 PMAQI
23rd Jul 2026559 PMAQI
23rd Jul 20266510 PMAQI
23rd Jul 20265811 PMAQI
24th Jul 20266612 AMAQI
24th Jul 2026721 AMAQI
24th Jul 2026742 AMAQI
24th Jul 2026683 AMAQI
24th Jul 2026784 AMAQI

30°C23/37°C

24th Jul 2026765 AMAQI
24th Jul 2026726 AMAQI
24th Jul 2026767 AMAQI
24th Jul 2026718 AMAQI
24th Jul 2026769 AMAQI
24th Jul 20267110 AMAQI
24th Jul 20267011 AMAQI
24th Jul 20266512 PMAQI
24th Jul 2026661 PMAQI
24th Jul 2026672 PMAQI
24th Jul 2026603 PMAQI
24th Jul 2026644 PMAQI
24th Jul 2026625 PMAQI
24th Jul 2026566 PMAQI
24th Jul 2026497 PMAQI
24th Jul 2026538 PMAQI
24th Jul 2026549 PMAQI
24th Jul 20265610 PMAQI
24th Jul 20265011 PMAQI
25th Jul 20265012 AMAQI
25th Jul 2026521 AMAQI
25th Jul 2026522 AMAQI
25th Jul 2026513 AMAQI
25th Jul 2026464 AMAQI

29°C20/37°C

25th Jul 2026445 AMAQI
25th Jul 2026536 AMAQI
25th Jul 2026537 AMAQI
25th Jul 2026498 AMAQI
25th Jul 2026539 AMAQI
25th Jul 20265010 AMAQI
25th Jul 20265411 AMAQI
25th Jul 20266212 PMAQI
25th Jul 2026501 PMAQI
25th Jul 2026582 PMAQI
25th Jul 2026543 PMAQI
25th Jul 2026574 PMAQI
25th Jul 2026675 PMAQI
25th Jul 2026666 PMAQI
25th Jul 2026697 PMAQI
25th Jul 2026698 PMAQI
25th Jul 2026569 PMAQI
25th Jul 20265810 PMAQI
25th Jul 20266011 PMAQI
26th Jul 20265212 AMAQI
26th Jul 2026541 AMAQI
26th Jul 2026582 AMAQI
26th Jul 2026573 AMAQI
26th Jul 2026664 AMAQI

27°C19/34°C

26th Jul 2026635 AMAQI
26th Jul 2026576 AMAQI
26th Jul 2026537 AMAQI
26th Jul 2026518 AMAQI
26th Jul 2026529 AMAQI
26th Jul 20265210 AMAQI
26th Jul 20265411 AMAQI
26th Jul 20266012 PMAQI
26th Jul 2026601 PMAQI
26th Jul 2026582 PMAQI
26th Jul 2026583 PMAQI
26th Jul 2026524 PMAQI
26th Jul 2026605 PMAQI
26th Jul 2026666 PMAQI
26th Jul 2026637 PMAQI
26th Jul 2026668 PMAQI
26th Jul 2026629 PMAQI
26th Jul 20265710 PMAQI
26th Jul 20266211 PMAQI
27th Jul 20266412 AMAQI
27th Jul 2026621 AMAQI
27th Jul 2026722 AMAQI
27th Jul 2026673 AMAQI
27th Jul 2026644 AMAQI

23°C16/32°C

27th Jul 2026625 AMAQI
27th Jul 2026626 AMAQI
27th Jul 2026607 AMAQI
27th Jul 2026658 AMAQI
27th Jul 2026679 AMAQI
27th Jul 20266610 AMAQI
27th Jul 20266011 AMAQI
27th Jul 20265812 PMAQI
27th Jul 2026541 PMAQI
27th Jul 2026602 PMAQI
27th Jul 2026603 PMAQI
27th Jul 2026644 PMAQI
27th Jul 2026725 PMAQI
27th Jul 2026646 PMAQI
27th Jul 2026677 PMAQI
27th Jul 2026718 PMAQI
27th Jul 2026599 PMAQI
27th Jul 20266210 PMAQI
27th Jul 20266411 PMAQI
28th Jul 20265712 AMAQI
28th Jul 2026621 AMAQI
28th Jul 2026592 AMAQI
28th Jul 2026643 AMAQI
28th Jul 2026724 AMAQI

24°C15/32°C

28th Jul 2026815 AMAQI
28th Jul 2026756 AMAQI
28th Jul 2026737 AMAQI
28th Jul 2026808 AMAQI
28th Jul 2026739 AMAQI
28th Jul 20266210 AMAQI
28th Jul 20265711 AMAQI
28th Jul 20265612 PMAQI
28th Jul 2026601 PMAQI
28th Jul 2026672 PMAQI
28th Jul 2026723 PMAQI
28th Jul 2026804 PMAQI
28th Jul 2026685 PMAQI
28th Jul 2026696 PMAQI
28th Jul 2026677 PMAQI
28th Jul 2026718 PMAQI
28th Jul 2026709 PMAQI
28th Jul 20265810 PMAQI
28th Jul 20266011 PMAQI
29th Jul 20266412 AMAQI
29th Jul 2026601 AMAQI
29th Jul 2026622 AMAQI
29th Jul 2026573 AMAQI
29th Jul 2026734 AMAQI

25°C16/32°C

29th Jul 2026685 AMAQI
29th Jul 2026656 AMAQI
29th Jul 2026707 AMAQI
29th Jul 2026628 AMAQI
29th Jul 2026709 AMAQI
29th Jul 20267410 AMAQI
29th Jul 20266911 AMAQI
29th Jul 20267212 PMAQI
29th Jul 2026591 PMAQI
29th Jul 2026502 PMAQI
29th Jul 2026563 PMAQI
29th Jul 2026524 PMAQI
29th Jul 2026545 PMAQI
29th Jul 2026566 PMAQI
29th Jul 2026597 PMAQI
29th Jul 2026578 PMAQI
29th Jul 2026569 PMAQI
29th Jul 20266210 PMAQI
29th Jul 20266811 PMAQI
30th Jul 20266612 AMAQI
30th Jul 2026671 AMAQI
30th Jul 2026672 AMAQI
30th Jul 2026673 AMAQI
30th Jul 2026694 AMAQI

23°C15/30°C

30th Jul 2026645 AMAQI
30th Jul 2026666 AMAQI
30th Jul 2026677 AMAQI
30th Jul 2026708 AMAQI
30th Jul 2026679 AMAQI
30th Jul 20267010 AMAQI
30th Jul 20266011 AMAQI
30th Jul 20266012 PMAQI
30th Jul 2026671 PMAQI
30th Jul 2026662 PMAQI
30th Jul 2026643 PMAQI
30th Jul 2026694 PMAQI
30th Jul 2026605 PMAQI
30th Jul 2026706 PMAQI
30th Jul 2026657 PMAQI
30th Jul 2026658 PMAQI
30th Jul 2026599 PMAQI
30th Jul 20265710 PMAQI
30th Jul 20266211 PMAQI
31st Jul 20266612 AMAQI
31st Jul 2026681 AMAQI
31st Jul 2026682 AMAQI
31st Jul 2026643 AMAQI
31st Jul 2026624 AMAQI

24°C15/32°C

31st Jul 2026605 AMAQI
31st Jul 2026606 AMAQI
31st Jul 2026577 AMAQI
31st Jul 2026548 AMAQI
31st Jul 2026549 AMAQI
31st Jul 20266010 AMAQI
31st Jul 20266011 AMAQI
31st Jul 20267012 PMAQI
31st Jul 2026601 PMAQI
31st Jul 2026492 PMAQI
31st Jul 2026513 PMAQI
31st Jul 2026474 PMAQI
31st Jul 2026585 PMAQI
31st Jul 2026606 PMAQI
31st Jul 2026627 PMAQI
31st Jul 2026568 PMAQI
31st Jul 2026499 PMAQI
31st Jul 20265410 PMAQI
31st Jul 20265011 PMAQI
1st Aug 20265012 AMAQI
1st Aug 2026561 AMAQI
1st Aug 2026572 AMAQI
1st Aug 2026603 AMAQI
1st Aug 2026584 AMAQI

26°C16/36°C

1st Aug 2026555 AMAQI
1st Aug 2026576 AMAQI
1st Aug 2026597 AMAQI
1st Aug 2026568 AMAQI
1st Aug 2026599 AMAQI
1st Aug 20266710 AMAQI
1st Aug 20266411 AMAQI
1st Aug 20266012 PMAQI
1st Aug 2026641 PMAQI
1st Aug 2026632 PMAQI
1st Aug 2026643 PMAQI
1st Aug 2026574 PMAQI
1st Aug 2026645 PMAQI
1st Aug 2026706 PMAQI
1st Aug 2026537 PMAQI
1st Aug 2026588 PMAQI
1st Aug 2026549 PMAQI
1st Aug 20266210 PMAQI
1st Aug 20265811 PMAQI
2nd Aug 20265212 AMAQI
2nd Aug 2026551 AMAQI
2nd Aug 2026592 AMAQI
2nd Aug 2026573 AMAQI
2nd Aug 2026544 AMAQI

25°C18/32°C

2nd Aug 2026545 AMAQI
5 AM
2nd Aug 2026516 AMAQI
2nd Aug 2026587 AMAQI
2nd Aug 2026448 AMAQI
2nd Aug 2026489 AMAQI
2nd Aug 20265210 AMAQI
2nd Aug 20264811 AMAQI
2nd Aug 20265412 PMAQI
12 PM
2nd Aug 2026581 PMAQI
2nd Aug 2026552 PMAQI
2nd Aug 2026583 PMAQI
2nd Aug 2026624 PMAQI
2nd Aug 2026625 PMAQI
2nd Aug 2026646 PMAQI
2nd Aug 2026637 PMAQI
2nd Aug 2026648 PMAQI
8 PM
2nd Aug 2026629 PMAQI
2nd Aug 20266510 PMAQI
2nd Aug 20266611 PMAQI
12 AM
4 AM

20°C12/26°C

Day time
Avg. Highest Time
5 AM - 6 PM

49AQI

14 hours / Day
420 hours / Month
Avg. Lowest Time
7 PM - 8 PM

47AQI

2 hours / Day
60 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 5 AM to 6 PM (Avg. 49), while the lowest AQI was between 7 PM to 8 PM (Avg. 47).
Night time
Avg. Highest Time
4 AM

49AQI

1 hours / Day
30 hours / Month
Avg. Lowest Time
12 AM - 1 AM

45AQI

2 hours / Day
60 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 4 AM to 4 AM (Avg. 49), while the lowest AQI was between 12 AM to 1 AM (Avg. 45).

2026 Days Vs Air Quality

Hill St, Pullman, Washington, United States

2026

89%

187

11%

23

Total number of days with different AQI categories in last 214 days in 2026 (151 days remaining)

Good
187 Days
Moderate
23 Days
Poor
0 Days
Unhealthy
0 Days
Severe
0 Days
Hazardous
0 Days

Under WHO’s Safe Air Quality Limits: 89%

Health Risk Level:

Low

In 2026, 89% of 214 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

Hill St, Pullman, 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
31AQI (US)
2nd January 2026
22AQI (US)
3rd January 2026
13AQI (US)
4th January 2026
13AQI (US)
5th January 2026
21AQI (US)
6th January 2026
14AQI (US)
7th January 2026
11AQI (US)
8th January 2026
15AQI (US)
9th January 2026
14AQI (US)
10th January 2026
14AQI (US)
11th January 2026
19AQI (US)
12th January 2026
15AQI (US)
13th January 2026
18AQI (US)
14th January 2026
18AQI (US)
15th January 2026
30AQI (US)
16th January 2026
23AQI (US)
17th January 2026
20AQI (US)
18th January 2026
23AQI (US)
19th January 2026
20AQI (US)
20th January 2026
22AQI (US)
21st January 2026
28AQI (US)
22nd January 2026
47AQI (US)
23rd January 2026
52AQI (US)
24th January 2026
48AQI (US)
25th January 2026
45AQI (US)
26th January 2026
45AQI (US)
27th January 2026
39AQI (US)
28th January 2026
44AQI (US)
29th January 2026
47AQI (US)
30th January 2026
46AQI (US)
31st January 2026
41AQI (US)
1st February 2026
47AQI (US)
2nd February 2026
47AQI (US)
3rd February 2026
46AQI (US)
4th February 2026
45AQI (US)
5th February 2026
47AQI (US)
6th February 2026
38AQI (US)
7th February 2026
36AQI (US)
8th February 2026
44AQI (US)
9th February 2026
41AQI (US)
10th February 2026
42AQI (US)
11th February 2026
36AQI (US)
12th February 2026
38AQI (US)
13th February 2026
46AQI (US)
14th February 2026
44AQI (US)
15th February 2026
34AQI (US)
16th February 2026
42AQI (US)
17th February 2026
43AQI (US)
18th February 2026
38AQI (US)
19th February 2026
40AQI (US)
20th February 2026
37AQI (US)
21st February 2026
33AQI (US)
22nd February 2026
35AQI (US)
23rd February 2026
37AQI (US)
24th February 2026
40AQI (US)
25th February 2026
38AQI (US)
26th February 2026
34AQI (US)
27th February 2026
33AQI (US)
28th February 2026
32AQI (US)
1st March 2026
35AQI (US)
2nd March 2026
55AQI (US)
3rd March 2026
42AQI (US)
4th March 2026
45AQI (US)
5th March 2026
39AQI (US)
6th March 2026
30AQI (US)
7th March 2026
39AQI (US)
8th March 2026
39AQI (US)
9th March 2026
37AQI (US)
10th March 2026
35AQI (US)
11th March 2026
38AQI (US)
12th March 2026
38AQI (US)
13th March 2026
38AQI (US)
14th March 2026
33AQI (US)
15th March 2026
31AQI (US)
16th March 2026
33AQI (US)
17th March 2026
31AQI (US)
18th March 2026
30AQI (US)
19th March 2026
33AQI (US)
20th March 2026
39AQI (US)
21st March 2026
36AQI (US)
22nd March 2026
34AQI (US)
23rd March 2026
37AQI (US)
24th March 2026
36AQI (US)
25th March 2026
31AQI (US)
26th March 2026
26AQI (US)
27th March 2026
28AQI (US)
28th March 2026
29AQI (US)
29th March 2026
26AQI (US)
30th March 2026
25AQI (US)
31st March 2026
23AQI (US)
1st April 2026
27AQI (US)
2nd April 2026
29AQI (US)
3rd April 2026
25AQI (US)
4th April 2026
30AQI (US)
5th April 2026
27AQI (US)
6th April 2026
26AQI (US)
7th April 2026
25AQI (US)
8th April 2026
29AQI (US)
9th April 2026
26AQI (US)
10th April 2026
30AQI (US)
11th April 2026
28AQI (US)
12th April 2026
24AQI (US)
13th April 2026
29AQI (US)
14th April 2026
32AQI (US)
15th April 2026
31AQI (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
25AQI (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
23AQI (US)
30th April 2026
26AQI (US)
1st May 2026
24AQI (US)
2nd May 2026
24AQI (US)
3rd May 2026
23AQI (US)
4th May 2026
34AQI (US)
5th May 2026
35AQI (US)
6th May 2026
28AQI (US)
7th May 2026
26AQI (US)
8th May 2026
26AQI (US)
9th May 2026
10th May 2026
30AQI (US)
11th May 2026
25AQI (US)
12th May 2026
23AQI (US)
13th May 2026
26AQI (US)
14th May 2026
24AQI (US)
15th May 2026
47AQI (US)
16th May 2026
51AQI (US)
17th May 2026
57AQI (US)
18th May 2026
56AQI (US)
19th May 2026
55AQI (US)
20th May 2026
52AQI (US)
21st May 2026
39AQI (US)
22nd May 2026
48AQI (US)
23rd May 2026
49AQI (US)
24th May 2026
45AQI (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
30AQI (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
26AQI (US)
13th June 2026
24AQI (US)
14th June 2026
24AQI (US)
15th June 2026
26AQI (US)
16th June 2026
27AQI (US)
17th June 2026
28AQI (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
24AQI (US)
24th June 2026
24AQI (US)
25th June 2026
25AQI (US)
26th June 2026
27AQI (US)
27th June 2026
29AQI (US)
28th June 2026
27AQI (US)
29th June 2026
25AQI (US)
30th June 2026
27AQI (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
26AQI (US)
9th July 2026
28AQI (US)
10th July 2026
33AQI (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
61AQI (US)
18th July 2026
57AQI (US)
19th July 2026
54AQI (US)
20th July 2026
65AQI (US)
21st July 2026
68AQI (US)
22nd July 2026
72AQI (US)
23rd July 2026
67AQI (US)
24th July 2026
66AQI (US)
25th July 2026
56AQI (US)
26th July 2026
58AQI (US)
27th July 2026
64AQI (US)
28th July 2026
67AQI (US)
29th July 2026
62AQI (US)
30th July 2026
65AQI (US)
31st July 2026
58AQI (US)
1st August 2026
59AQI (US)
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

28AQI (US)

40AQI (US)

35AQI (US)

27AQI (US)

35AQI (US)

26AQI (US)

45AQI (US)

59AQI (US)

No. of days

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

202634AQI (US)

30
1
28
30
1
28
25
5
30
16
15
1
187
23

Highest AQI (US) recorded in

August

59AQI (US)

Lowest AQI (US) recorded in

June

26AQI (US)

202526AQI (US)

31
28
31
30
31
30
31
23
8
13
15
2
30
1
28
2
31
337
26
2

Highest AQI (US) recorded in

September

53AQI (US)

Lowest AQI (US) recorded in

May

15AQI (US)

202422AQI (US)

28
2
29
31
30
31
29
25
6
27
4
26
4
31
26
4
31
344
20

Highest AQI (US) recorded in

July

37AQI (US)

Lowest AQI (US) recorded in

March

9AQI (US)

202321AQI (US)

31
28
31
30
28
3
29
1
31
23
6
1
1
29
1
30
1
27
2
31
348
14
1
1

Highest AQI (US) recorded in

August

52AQI (US)

Lowest AQI (US) recorded in

April

12AQI (US)

202221AQI (US)

29
21
31
24
31
30
21
1
19
6
2
2
25
6
25
5
27
284
17
2
2

Highest AQI (US) recorded in

September

52AQI (US)

Lowest AQI (US) recorded in

March

9AQI (US)

202122AQI (US)

29
28
31
30
31
27
26
4
1
16
8
4
2
1
25
5
31
29
1
31
334
18
5
2
1

Highest AQI (US) recorded in

August

64AQI (US)

Lowest AQI (US) recorded in

May

11AQI (US)

202023AQI (US)

13
20
18
30
31
31
21
1
1
7
31
30
31
256
1
1
7

Highest AQI (US) recorded in

September

68AQI (US)

Lowest AQI (US) recorded in

May

10AQI (US)

Most & Least Polluted Years Over the Last 7 Years

Most Polluted Year Recorded
2026(Avg.)
34AQI (US)
Least Polluted Year Recorded
2022(Avg.)
21AQI (US)

Hill St's annual 2026 AQI (US) (34) shows an average percentage change of 51.9% (worsened AQI (US)) compared to previous years: 2020 (23), 2021 (22), 2022 (21), 2023 (21), 2024 (22), 2025 (26).