Country Background
HistoryAQIPM₂.₅PM₁₀COSO₂NO₂O₃

Pendleton, Oregon, 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+

September Air Quality Analysis

Pendleton, Oregon, United States

2022
2023
2024
2025
2026
AQI
.
Days

AQI Trends: Highest and Lowest

Highest AQI recorded on
11th Sep 2022
122AQI
Lowest AQI recorded on
27th Sep 2023
6AQI

Same Day Analysis (26th September):
On this day, AQI across the 5 years varied significantly: 2026 ranks 3rd highest AQI at 30 of Good air quality, showing improvement over 2025 and 2022 on the same day.

Day & Night AQI Trend: 25th Sep - 26th Sep 2026

Pendleton, Oregon, United States

AQI
Day
Night
.

6 AM25th Sep 2026

7 PM

5 AM26th Sep 2026

Day time
Avg. Highest Time
6PM25th Sep

272AQI

Avg. Lowest Time
7AM25th Sep

38AQI

Night time
Avg. Highest Time
7PM25th Sep

259AQI

Avg. Lowest Time
4AM26th Sep

18AQI

In the last 24 hours,

Pendleton's AQI reached its highest point of 272 at 6 PM during the Day, while the lowest point, 18, was recorded at 4 AM during the Night between 25th Sep and 26th Sep 2026.

Day & Night AQI Trend : Aug - Sep 2026

Pendleton, Oregon, United States

AugSep
28th - 29th29th - 30th30th - 31st31st - 01st01st - 02nd02nd - 03rd03rd - 04th04th - 05th05th - 06th06th - 07th07th - 08th08th - 09th09th - 10th10th - 11th11th - 12th12th - 13th13th - 14th14th - 15th15th - 16th16th - 17th17th - 18th18th - 19th19th - 20th20th - 21st21st - 22nd22nd - 23rd23rd - 24th24th - 25th25th - 26th26th
Day
Night
28th Aug 2026406 AMAQI
28th Aug 2026467 AMAQI
28th Aug 2026448 AMAQI
28th Aug 2026389 AMAQI
28th Aug 20264610 AMAQI
28th Aug 20265111 AMAQI
28th Aug 20264812 PMAQI
28th Aug 2026501 PMAQI
28th Aug 2026492 PMAQI
28th Aug 2026483 PMAQI
28th Aug 2026464 PMAQI
28th Aug 2026535 PMAQI
28th Aug 2026656 PMAQI
28th Aug 2026647 PMAQI
28th Aug 2026668 PMAQI
28th Aug 2026629 PMAQI
28th Aug 20266210 PMAQI
28th Aug 20266011 PMAQI
29th Aug 20265912 AMAQI
29th Aug 2026591 AMAQI
29th Aug 2026592 AMAQI
29th Aug 2026513 AMAQI
29th Aug 2026694 AMAQI
29th Aug 2026525 AMAQI

21°C13/29°C

29th Aug 2026406 AMAQI
29th Aug 2026387 AMAQI
29th Aug 2026528 AMAQI
29th Aug 2026379 AMAQI
29th Aug 20266010 AMAQI
29th Aug 20265411 AMAQI
29th Aug 20266412 PMAQI
29th Aug 20261081 PMAQI
29th Aug 20261222 PMAQI
29th Aug 20261183 PMAQI
29th Aug 2026864 PMAQI
29th Aug 2026645 PMAQI
29th Aug 2026606 PMAQI
29th Aug 2026627 PMAQI
29th Aug 20261268 PMAQI
29th Aug 20261029 PMAQI
29th Aug 20265810 PMAQI
29th Aug 20265811 PMAQI
30th Aug 20265012 AMAQI
30th Aug 2026501 AMAQI
30th Aug 2026502 AMAQI
30th Aug 2026463 AMAQI
30th Aug 2026464 AMAQI
30th Aug 2026345 AMAQI

19°C14/25°C

30th Aug 2026276 AMAQI
30th Aug 2026257 AMAQI
30th Aug 2026428 AMAQI
30th Aug 2026309 AMAQI
30th Aug 20263610 AMAQI
30th Aug 20263611 AMAQI
30th Aug 20264012 PMAQI
30th Aug 2026301 PMAQI
30th Aug 2026522 PMAQI
30th Aug 2026423 PMAQI
30th Aug 2026544 PMAQI
30th Aug 2026365 PMAQI
30th Aug 2026566 PMAQI
30th Aug 2026447 PMAQI
30th Aug 2026388 PMAQI
30th Aug 2026409 PMAQI
30th Aug 20264910 PMAQI
30th Aug 20264511 PMAQI
31st Aug 20264512 AMAQI
31st Aug 2026481 AMAQI
31st Aug 2026502 AMAQI
31st Aug 2026483 AMAQI
31st Aug 2026514 AMAQI
31st Aug 2026515 AMAQI

18°C9/27°C

31st Aug 2026486 AMAQI
31st Aug 2026507 AMAQI
31st Aug 2026518 AMAQI
31st Aug 2026549 AMAQI
31st Aug 20267110 AMAQI
31st Aug 20268411 AMAQI
31st Aug 20268012 PMAQI
31st Aug 2026761 PMAQI
31st Aug 2026782 PMAQI
31st Aug 2026693 PMAQI
31st Aug 2026644 PMAQI
31st Aug 2026595 PMAQI
31st Aug 2026546 PMAQI
31st Aug 2026427 PMAQI
31st Aug 2026468 PMAQI
31st Aug 2026489 PMAQI
31st Aug 20265410 PMAQI
31st Aug 20264611 PMAQI
1st Sep 20264712 AMAQI
1st Sep 2026471 AMAQI
1st Sep 2026532 AMAQI
1st Sep 2026583 AMAQI
1st Sep 2026524 AMAQI
1st Sep 2026495 AMAQI

21°C10/31°C

1st Sep 2026516 AMAQI
1st Sep 2026507 AMAQI
1st Sep 2026468 AMAQI
1st Sep 2026469 AMAQI
1st Sep 20265410 AMAQI
1st Sep 20265711 AMAQI
1st Sep 20265312 PMAQI
1st Sep 2026541 PMAQI
1st Sep 2026582 PMAQI
1st Sep 2026553 PMAQI
1st Sep 2026534 PMAQI
1st Sep 2026525 PMAQI
1st Sep 2026506 PMAQI
1st Sep 2026517 PMAQI
1st Sep 2026518 PMAQI
1st Sep 2026509 PMAQI
1st Sep 20265110 PMAQI
1st Sep 20265611 PMAQI
2nd Sep 20265612 AMAQI
2nd Sep 2026581 AMAQI
2nd Sep 2026602 AMAQI
2nd Sep 2026553 AMAQI
2nd Sep 2026504 AMAQI
2nd Sep 2026525 AMAQI

21°C13/30°C

2nd Sep 2026366 AMAQI
2nd Sep 2026507 AMAQI
2nd Sep 2026528 AMAQI
2nd Sep 2026529 AMAQI
2nd Sep 20265210 AMAQI
2nd Sep 20263811 AMAQI
2nd Sep 20264612 PMAQI
2nd Sep 2026501 PMAQI
2nd Sep 2026472 PMAQI
2nd Sep 2026543 PMAQI
2nd Sep 2026274 PMAQI
2nd Sep 2026795 PMAQI
2nd Sep 2026626 PMAQI
2nd Sep 2026547 PMAQI
2nd Sep 2026528 PMAQI
2nd Sep 2026509 PMAQI
2nd Sep 20264610 PMAQI
2nd Sep 20265011 PMAQI
3rd Sep 20263812 AMAQI
3rd Sep 2026441 AMAQI
3rd Sep 2026502 AMAQI
3rd Sep 2026503 AMAQI
3rd Sep 2026504 AMAQI
3rd Sep 2026475 AMAQI

19°C13/26°C

3rd Sep 2026526 AMAQI
3rd Sep 2026467 AMAQI
3rd Sep 2026368 AMAQI
3rd Sep 2026529 AMAQI
3rd Sep 20264110 AMAQI
3rd Sep 20263911 AMAQI
3rd Sep 20265112 PMAQI
3rd Sep 2026321 PMAQI
3rd Sep 2026342 PMAQI
3rd Sep 2026493 PMAQI
3rd Sep 2026414 PMAQI
3rd Sep 2026775 PMAQI
3rd Sep 2026566 PMAQI
3rd Sep 2026427 PMAQI
3rd Sep 2026148 PMAQI
3rd Sep 2026179 PMAQI
3rd Sep 20265410 PMAQI
3rd Sep 20261411 PMAQI
4th Sep 20261612 AMAQI
4th Sep 2026161 AMAQI
4th Sep 2026102 AMAQI
4th Sep 2026523 AMAQI
4th Sep 2026464 AMAQI
4th Sep 2026345 AMAQI

15°C13/20°C

4th Sep 2026506 AMAQI
4th Sep 2026547 AMAQI
4th Sep 2026478 AMAQI
4th Sep 2026469 AMAQI
4th Sep 20265010 AMAQI
4th Sep 20264611 AMAQI
4th Sep 20263212 PMAQI
4th Sep 2026361 PMAQI
4th Sep 2026382 PMAQI
4th Sep 2026143 PMAQI
4th Sep 202694 PMAQI
4th Sep 2026145 PMAQI
4th Sep 2026106 PMAQI
4th Sep 2026247 PMAQI
4th Sep 2026288 PMAQI
4th Sep 2026209 PMAQI
4th Sep 20261210 PMAQI
4th Sep 20264411 PMAQI
5th Sep 20263412 AMAQI
5th Sep 2026311 AMAQI
5th Sep 2026462 AMAQI
5th Sep 2026423 AMAQI
5th Sep 2026504 AMAQI
5th Sep 2026365 AMAQI

14°C8/23°C

5th Sep 2026506 AMAQI
5th Sep 2026487 AMAQI
5th Sep 2026478 AMAQI
5th Sep 2026509 AMAQI
5th Sep 20264910 AMAQI
5th Sep 20265011 AMAQI
5th Sep 20263812 PMAQI
5th Sep 2026461 PMAQI
5th Sep 2026542 PMAQI
5th Sep 2026503 PMAQI
5th Sep 2026424 PMAQI
5th Sep 2026175 PMAQI
5th Sep 2026306 PMAQI
5th Sep 2026347 PMAQI
5th Sep 2026468 PMAQI
5th Sep 2026429 PMAQI
5th Sep 20261610 PMAQI
5th Sep 20265011 PMAQI
6th Sep 20263612 AMAQI
6th Sep 2026441 AMAQI
6th Sep 2026452 AMAQI
6th Sep 2026463 AMAQI
6th Sep 2026304 AMAQI
6th Sep 2026425 AMAQI

17°C9/26°C

6th Sep 2026466 AMAQI
6th Sep 2026387 AMAQI
6th Sep 2026528 AMAQI
6th Sep 2026589 AMAQI
6th Sep 20264810 AMAQI
6th Sep 20263811 AMAQI
6th Sep 20262812 PMAQI
6th Sep 2026461 PMAQI
6th Sep 2026502 PMAQI
6th Sep 2026423 PMAQI
6th Sep 2026544 PMAQI
6th Sep 2026525 PMAQI
6th Sep 2026316 PMAQI
6th Sep 2026567 PMAQI
6th Sep 2026548 PMAQI
6th Sep 2026499 PMAQI
6th Sep 20264510 PMAQI
6th Sep 20263811 PMAQI
7th Sep 20263612 AMAQI
7th Sep 2026521 AMAQI
7th Sep 2026462 AMAQI
7th Sep 2026503 AMAQI
7th Sep 2026524 AMAQI
7th Sep 2026465 AMAQI

15°C9/21°C

7th Sep 2026466 AMAQI
7th Sep 2026467 AMAQI
7th Sep 2026528 AMAQI
7th Sep 2026469 AMAQI
7th Sep 20263810 AMAQI
7th Sep 20265011 AMAQI
7th Sep 20263012 PMAQI
7th Sep 2026461 PMAQI
7th Sep 2026502 PMAQI
7th Sep 2026503 PMAQI
7th Sep 2026114 PMAQI
7th Sep 2026145 PMAQI
7th Sep 2026276 PMAQI
7th Sep 2026177 PMAQI
7th Sep 2026168 PMAQI
7th Sep 2026369 PMAQI
7th Sep 20265410 PMAQI
7th Sep 20264611 PMAQI
8th Sep 20263612 AMAQI
8th Sep 2026381 AMAQI
8th Sep 2026302 AMAQI
8th Sep 2026243 AMAQI
8th Sep 2026464 AMAQI
8th Sep 2026325 AMAQI

18°C11/26°C

8th Sep 2026426 AMAQI
8th Sep 2026407 AMAQI
8th Sep 2026278 AMAQI
8th Sep 2026329 AMAQI
8th Sep 20262810 AMAQI
8th Sep 20263611 AMAQI
8th Sep 20262712 PMAQI
8th Sep 2026521 PMAQI
8th Sep 2026252 PMAQI
8th Sep 2026253 PMAQI
8th Sep 2026254 PMAQI
8th Sep 2026215 PMAQI
8th Sep 2026316 PMAQI
8th Sep 2026387 PMAQI
8th Sep 2026128 PMAQI
8th Sep 2026259 PMAQI
8th Sep 20262310 PMAQI
8th Sep 20264011 PMAQI
9th Sep 20264612 AMAQI
9th Sep 2026461 AMAQI
9th Sep 2026462 AMAQI
9th Sep 2026523 AMAQI
9th Sep 2026464 AMAQI
9th Sep 2026465 AMAQI

18°C9/27°C

9th Sep 2026196 AMAQI
9th Sep 2026327 AMAQI
9th Sep 2026468 AMAQI
9th Sep 2026509 AMAQI
9th Sep 20264010 AMAQI
9th Sep 20264011 AMAQI
9th Sep 20263912 PMAQI
9th Sep 2026501 PMAQI
9th Sep 2026502 PMAQI
9th Sep 2026543 PMAQI
9th Sep 2026564 PMAQI
9th Sep 2026625 PMAQI
9th Sep 2026666 PMAQI
9th Sep 2026567 PMAQI
9th Sep 2026528 PMAQI
9th Sep 2026519 PMAQI
9th Sep 20264610 PMAQI
9th Sep 20265011 PMAQI
10th Sep 20264812 AMAQI
10th Sep 2026511 AMAQI
10th Sep 2026382 AMAQI
10th Sep 2026383 AMAQI
10th Sep 2026564 AMAQI
10th Sep 2026545 AMAQI

20°C9/29°C

10th Sep 2026546 AMAQI
10th Sep 2026567 AMAQI
10th Sep 2026548 AMAQI
10th Sep 2026549 AMAQI
10th Sep 20265610 AMAQI
10th Sep 20265611 AMAQI
10th Sep 20265612 PMAQI
10th Sep 2026561 PMAQI
10th Sep 2026512 PMAQI
10th Sep 2026503 PMAQI
10th Sep 2026464 PMAQI
10th Sep 2026505 PMAQI
10th Sep 2026586 PMAQI
10th Sep 2026667 PMAQI
10th Sep 2026638 PMAQI
10th Sep 2026669 PMAQI
10th Sep 20265810 PMAQI
10th Sep 20265511 PMAQI
11th Sep 20265812 AMAQI
11th Sep 2026361 AMAQI
11th Sep 2026472 AMAQI
11th Sep 2026463 AMAQI
11th Sep 2026484 AMAQI
11th Sep 2026505 AMAQI

22°C11/32°C

11th Sep 2026486 AMAQI
11th Sep 2026597 AMAQI
11th Sep 2026568 AMAQI
11th Sep 2026639 AMAQI
11th Sep 20266110 AMAQI
11th Sep 20265811 AMAQI
11th Sep 20265012 PMAQI
11th Sep 2026461 PMAQI
11th Sep 2026342 PMAQI
11th Sep 2026503 PMAQI
11th Sep 2026324 PMAQI
11th Sep 2026345 PMAQI
11th Sep 2026506 PMAQI
11th Sep 2026507 PMAQI
11th Sep 2026508 PMAQI
11th Sep 2026509 PMAQI
11th Sep 20264610 PMAQI
11th Sep 20265011 PMAQI
12th Sep 20264612 AMAQI
12th Sep 2026481 AMAQI
12th Sep 2026492 AMAQI
12th Sep 2026503 AMAQI
12th Sep 2026464 AMAQI
12th Sep 2026515 AMAQI

20°C13/25°C

12th Sep 2026506 AMAQI
12th Sep 2026517 AMAQI
12th Sep 2026488 AMAQI
12th Sep 2026489 AMAQI
12th Sep 20264410 AMAQI
12th Sep 20265211 AMAQI
12th Sep 20264412 PMAQI
12th Sep 2026382 PMAQI
12th Sep 2026403 PMAQI
12th Sep 2026484 PMAQI
12th Sep 2026405 PMAQI
12th Sep 2026506 PMAQI
12th Sep 2026507 PMAQI
12th Sep 2026508 PMAQI
12th Sep 2026539 PMAQI
12th Sep 202613210 PMAQI
12th Sep 20268011 PMAQI
13th Sep 20265412 AMAQI
13th Sep 2026551 AMAQI
13th Sep 2026562 AMAQI
13th Sep 2026433 AMAQI
13th Sep 2026504 AMAQI
13th Sep 2026505 AMAQI

18°C9/26°C

13th Sep 2026526 AMAQI
13th Sep 2026517 AMAQI
13th Sep 2026308 AMAQI
13th Sep 2026289 AMAQI
13th Sep 20263010 AMAQI
13th Sep 20264611 AMAQI
13th Sep 20262012 PMAQI
13th Sep 2026201 PMAQI
13th Sep 2026222 PMAQI
13th Sep 202683 PMAQI
13th Sep 2026204 PMAQI
13th Sep 2026205 PMAQI
13th Sep 2026236 PMAQI
13th Sep 2026237 PMAQI
13th Sep 2026278 PMAQI
13th Sep 2026209 PMAQI
13th Sep 20262110 PMAQI
13th Sep 20262211 PMAQI
14th Sep 20262012 AMAQI
14th Sep 2026181 AMAQI
14th Sep 2026202 AMAQI
14th Sep 2026203 AMAQI
14th Sep 2026164 AMAQI
14th Sep 2026225 AMAQI

13°C10/17°C

14th Sep 2026256 AMAQI
14th Sep 2026247 AMAQI
14th Sep 2026218 AMAQI
14th Sep 202689 AMAQI
14th Sep 20264210 AMAQI
14th Sep 20263611 AMAQI
14th Sep 2026912 PMAQI
14th Sep 202681 PMAQI
14th Sep 2026122 PMAQI
14th Sep 2026103 PMAQI
14th Sep 2026244 PMAQI
14th Sep 2026265 PMAQI
14th Sep 2026266 PMAQI
14th Sep 2026287 PMAQI
14th Sep 2026268 PMAQI
14th Sep 2026189 PMAQI
14th Sep 20261210 PMAQI
14th Sep 20264011 PMAQI
15th Sep 20264212 AMAQI
15th Sep 2026401 AMAQI
15th Sep 2026522 AMAQI
15th Sep 2026333 AMAQI
15th Sep 2026334 AMAQI
15th Sep 2026405 AMAQI

15°C11/19°C

15th Sep 2026336 AMAQI
15th Sep 2026447 AMAQI
15th Sep 2026388 AMAQI
15th Sep 2026429 AMAQI
15th Sep 20264010 AMAQI
15th Sep 20262111 AMAQI
15th Sep 20263812 PMAQI
15th Sep 2026341 PMAQI
15th Sep 2026362 PMAQI
15th Sep 2026363 PMAQI
15th Sep 2026364 PMAQI
15th Sep 2026385 PMAQI
15th Sep 2026296 PMAQI
15th Sep 2026257 PMAQI
15th Sep 2026338 PMAQI
15th Sep 2026349 PMAQI
15th Sep 20262310 PMAQI
15th Sep 20264211 PMAQI
16th Sep 20264212 AMAQI
16th Sep 2026401 AMAQI
16th Sep 2026462 AMAQI
16th Sep 2026333 AMAQI
16th Sep 2026464 AMAQI
16th Sep 2026425 AMAQI

17°C13/19°C

16th Sep 2026446 AMAQI
16th Sep 2026387 AMAQI
16th Sep 2026428 AMAQI
16th Sep 2026349 AMAQI
16th Sep 20265010 AMAQI
16th Sep 20264411 AMAQI
16th Sep 20262112 PMAQI
16th Sep 2026461 PMAQI
16th Sep 2026502 PMAQI
16th Sep 2026483 PMAQI
16th Sep 2026544 PMAQI
16th Sep 2026565 PMAQI
16th Sep 2026466 PMAQI
16th Sep 2026267 PMAQI
16th Sep 2026258 PMAQI
16th Sep 2026349 PMAQI
16th Sep 20265010 PMAQI
16th Sep 20264411 PMAQI
17th Sep 20264212 AMAQI
17th Sep 2026481 AMAQI
17th Sep 2026382 AMAQI
17th Sep 2026463 AMAQI
17th Sep 2026114 AMAQI
17th Sep 2026325 AMAQI

17°C12/22°C

17th Sep 2026466 AMAQI
17th Sep 2026417 AMAQI
17th Sep 2026508 AMAQI
17th Sep 2026529 AMAQI
17th Sep 20265210 AMAQI
17th Sep 20265611 AMAQI
17th Sep 20264212 PMAQI
17th Sep 2026381 PMAQI
17th Sep 2026482 PMAQI
17th Sep 2026523 PMAQI
17th Sep 2026604 PMAQI
17th Sep 2026605 PMAQI
17th Sep 2026386 PMAQI
17th Sep 2026567 PMAQI
17th Sep 2026528 PMAQI
17th Sep 2026549 PMAQI
17th Sep 20265010 PMAQI
17th Sep 20265211 PMAQI
18th Sep 20265012 AMAQI
18th Sep 2026481 AMAQI
18th Sep 2026492 AMAQI
18th Sep 2026503 AMAQI
18th Sep 2026534 AMAQI
18th Sep 2026455 AMAQI

17°C14/18°C

18th Sep 2026386 AMAQI
18th Sep 2026447 AMAQI
18th Sep 2026428 AMAQI
18th Sep 2026429 AMAQI
18th Sep 20263610 AMAQI
18th Sep 20264211 AMAQI
18th Sep 20265212 PMAQI
18th Sep 2026521 PMAQI
18th Sep 2026502 PMAQI
18th Sep 2026503 PMAQI
18th Sep 2026214 PMAQI
18th Sep 2026585 PMAQI
18th Sep 2026626 PMAQI
18th Sep 2026657 PMAQI
18th Sep 2026528 PMAQI
18th Sep 2026529 PMAQI
18th Sep 20265110 PMAQI
18th Sep 20265011 PMAQI
19th Sep 20265012 AMAQI
19th Sep 2026421 AMAQI
19th Sep 2026382 AMAQI
19th Sep 2026423 AMAQI
19th Sep 2026404 AMAQI
19th Sep 2026505 AMAQI

20°C17/23°C

19th Sep 2026486 AMAQI
19th Sep 2026387 AMAQI
19th Sep 2026508 AMAQI
19th Sep 2026459 AMAQI
19th Sep 20265810 AMAQI
19th Sep 20264611 AMAQI
19th Sep 20265212 PMAQI
19th Sep 2026501 PMAQI
19th Sep 2026502 PMAQI
19th Sep 2026363 PMAQI
19th Sep 2026334 PMAQI
19th Sep 2026255 PMAQI
19th Sep 2026346 PMAQI
19th Sep 2026237 PMAQI
19th Sep 2026468 PMAQI
19th Sep 2026469 PMAQI
19th Sep 20264210 PMAQI
19th Sep 20264611 PMAQI
20th Sep 20264812 AMAQI
20th Sep 2026461 AMAQI
20th Sep 2026502 AMAQI
20th Sep 2026423 AMAQI
20th Sep 2026384 AMAQI
20th Sep 2026425 AMAQI

21°C17/25°C

20th Sep 2026506 AMAQI
20th Sep 2026507 AMAQI
20th Sep 2026448 AMAQI
20th Sep 2026469 AMAQI
20th Sep 20264610 AMAQI
20th Sep 20265211 AMAQI
20th Sep 20264612 PMAQI
20th Sep 2026441 PMAQI
20th Sep 2026422 PMAQI
20th Sep 2026503 PMAQI
20th Sep 2026384 PMAQI
20th Sep 2026465 PMAQI
20th Sep 2026426 PMAQI
20th Sep 2026427 PMAQI
20th Sep 2026368 PMAQI
20th Sep 2026519 PMAQI
20th Sep 20264810 PMAQI
20th Sep 20265411 PMAQI
21st Sep 20264612 AMAQI
21st Sep 2026361 AMAQI
21st Sep 2026502 AMAQI
21st Sep 2026503 AMAQI
21st Sep 2026424 AMAQI
21st Sep 2026465 AMAQI

23°C18/27°C

21st Sep 2026466 AMAQI
21st Sep 2026467 AMAQI
21st Sep 2026468 AMAQI
21st Sep 2026449 AMAQI
21st Sep 20264110 AMAQI
21st Sep 20264411 AMAQI
21st Sep 20264812 PMAQI
21st Sep 2026461 PMAQI
21st Sep 2026542 PMAQI
21st Sep 2026443 PMAQI
21st Sep 2026374 PMAQI
21st Sep 2026485 PMAQI
21st Sep 2026586 PMAQI
21st Sep 2026587 PMAQI
21st Sep 2026458 PMAQI
21st Sep 2026509 PMAQI
21st Sep 20264610 PMAQI
21st Sep 20265611 PMAQI
22nd Sep 20265412 AMAQI
22nd Sep 2026541 AMAQI
22nd Sep 2026502 AMAQI
22nd Sep 2026423 AMAQI
22nd Sep 2026404 AMAQI
22nd Sep 2026405 AMAQI

23°C19/27°C

22nd Sep 2026546 AMAQI
22nd Sep 2026407 AMAQI
22nd Sep 2026528 AMAQI
22nd Sep 2026549 AMAQI
22nd Sep 20265410 AMAQI
22nd Sep 20265011 AMAQI
22nd Sep 20266512 PMAQI
22nd Sep 2026821 PMAQI
22nd Sep 2026522 PMAQI
22nd Sep 2026683 PMAQI
22nd Sep 2026564 PMAQI
22nd Sep 2026445 PMAQI
22nd Sep 2026636 PMAQI
22nd Sep 2026587 PMAQI
22nd Sep 2026498 PMAQI
22nd Sep 2026619 PMAQI
22nd Sep 20265010 PMAQI
22nd Sep 20265811 PMAQI
23rd Sep 20266512 AMAQI
23rd Sep 2026651 AMAQI
23rd Sep 2026602 AMAQI
23rd Sep 2026543 AMAQI
23rd Sep 2026544 AMAQI
23rd Sep 2026525 AMAQI

20°C16/23°C

23rd Sep 2026496 AMAQI
23rd Sep 2026547 AMAQI
23rd Sep 2026498 AMAQI
23rd Sep 2026509 AMAQI
23rd Sep 20265610 AMAQI
23rd Sep 20265411 AMAQI
23rd Sep 20265212 PMAQI
23rd Sep 2026521 PMAQI
23rd Sep 2026502 PMAQI
23rd Sep 2026523 PMAQI
23rd Sep 2026504 PMAQI
23rd Sep 2026525 PMAQI
23rd Sep 2026506 PMAQI
23rd Sep 2026227 PMAQI
23rd Sep 2026228 PMAQI
23rd Sep 2026369 PMAQI
23rd Sep 20264010 PMAQI
23rd Sep 20264611 PMAQI
24th Sep 20265012 AMAQI
24th Sep 2026521 AMAQI
24th Sep 2026472 AMAQI
24th Sep 2026513 AMAQI
24th Sep 2026584 AMAQI
24th Sep 2026555 AMAQI

18°C15/22°C

24th Sep 2026536 AMAQI
24th Sep 2026547 AMAQI
24th Sep 2026598 AMAQI
24th Sep 2026629 AMAQI
24th Sep 20265910 AMAQI
24th Sep 20265211 AMAQI
24th Sep 20264612 PMAQI
24th Sep 2026421 PMAQI
24th Sep 2026562 PMAQI
24th Sep 2026523 PMAQI
24th Sep 2026504 PMAQI
24th Sep 2026505 PMAQI
24th Sep 2026386 PMAQI
24th Sep 2026507 PMAQI
24th Sep 2026468 PMAQI
24th Sep 2026499 PMAQI
24th Sep 20265010 PMAQI
24th Sep 20265011 PMAQI
25th Sep 20265212 AMAQI
25th Sep 2026531 AMAQI
25th Sep 2026542 AMAQI
25th Sep 2026583 AMAQI
25th Sep 2026504 AMAQI
25th Sep 2026535 AMAQI

19°C15/24°C

25th Sep 2026466 AMAQI
25th Sep 2026387 AMAQI
25th Sep 2026518 AMAQI
25th Sep 2026659 AMAQI
25th Sep 20265010 AMAQI
25th Sep 20266211 AMAQI
25th Sep 20267312 PMAQI
25th Sep 2026831 PMAQI
25th Sep 2026642 PMAQI
25th Sep 20261703 PMAQI
25th Sep 20261954 PMAQI
25th Sep 20262415 PMAQI
25th Sep 20262726 PMAQI
25th Sep 20262597 PMAQI
25th Sep 20261358 PMAQI
25th Sep 20261089 PMAQI
25th Sep 20265910 PMAQI
25th Sep 20264611 PMAQI
26th Sep 20262912 AMAQI
26th Sep 2026381 AMAQI
26th Sep 2026472 AMAQI
26th Sep 2026273 AMAQI
26th Sep 2026184 AMAQI
26th Sep 2026215 AMAQI

15°C11/20°C

26th Sep 2026506 AMAQI
6 AM
26th Sep 2026427 AMAQI
26th Sep 2026188 AMAQI
26th Sep 2026509 AMAQI
26th Sep 20263310 AMAQI
26th Sep 20263411 AMAQI
26th Sep 20263912 PMAQI
12 PM
26th Sep 2026201 PMAQI
26th Sep 2026162 PMAQI
26th Sep 2026183 PMAQI
26th Sep 2026104 PMAQI
26th Sep 2026185 PMAQI
26th Sep 2026126 PMAQI
26th Sep 2026107 PMAQI
7 PM
26th Sep 2026198 PMAQI
26th Sep 2026369 PMAQI
26th Sep 20265810 PMAQI
26th Sep 20264611 PMAQI
12 AM
5 AM

13°C9/17°C

Day time
Avg. Highest Time
6 PM

52AQI

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

45AQI

7 hours / Day
210 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 6 PM to 6 PM (Avg. 52), while the lowest AQI was between 6 AM to 12 PM (Avg. 45).
Night time
Avg. Highest Time
8 PM - 11 PM

47AQI

4 hours / Day
120 hours / Month
Avg. Lowest Time
12 AM - 5 AM

45AQI

6 hours / Day
180 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 8 PM to 11 PM (Avg. 47), while the lowest AQI was between 12 AM to 5 AM (Avg. 45).

2026 Days Vs Air Quality

Pendleton, Oregon, United States

2026

80%

213

18%

47

2%

5

0.3%

1

Total number of days with different AQI categories in last 269 days in 2026 (96 days remaining)

Good
213 Days
Moderate
47 Days
Poor
5 Days
Unhealthy
1 Days
Severe
0 Days
Hazardous
0 Days

Under WHO’s Safe Air Quality Limits: 80%

Health Risk Level:

Low

In 2026, 80% of 269 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

Pendleton, Oregon, 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
50AQI (US)
2nd January 2026
41AQI (US)
3rd January 2026
36AQI (US)
4th January 2026
25AQI (US)
5th January 2026
29AQI (US)
6th January 2026
33AQI (US)
7th January 2026
9AQI (US)
8th January 2026
10AQI (US)
9th January 2026
13AQI (US)
10th January 2026
64AQI (US)
11th January 2026
48AQI (US)
12th January 2026
41AQI (US)
13th January 2026
42AQI (US)
14th January 2026
37AQI (US)
15th January 2026
47AQI (US)
16th January 2026
23AQI (US)
17th January 2026
19AQI (US)
18th January 2026
28AQI (US)
19th January 2026
26AQI (US)
20th January 2026
31AQI (US)
21st January 2026
27AQI (US)
22nd January 2026
37AQI (US)
23rd January 2026
38AQI (US)
24th January 2026
34AQI (US)
25th January 2026
37AQI (US)
26th January 2026
37AQI (US)
27th January 2026
27AQI (US)
28th January 2026
31AQI (US)
29th January 2026
37AQI (US)
30th January 2026
49AQI (US)
31st January 2026
28AQI (US)
1st February 2026
42AQI (US)
2nd February 2026
47AQI (US)
3rd February 2026
42AQI (US)
4th February 2026
36AQI (US)
5th February 2026
40AQI (US)
6th February 2026
29AQI (US)
7th February 2026
28AQI (US)
8th February 2026
39AQI (US)
9th February 2026
44AQI (US)
10th February 2026
37AQI (US)
11th February 2026
32AQI (US)
12th February 2026
24AQI (US)
13th February 2026
23AQI (US)
14th February 2026
28AQI (US)
15th February 2026
29AQI (US)
16th February 2026
43AQI (US)
17th February 2026
39AQI (US)
18th February 2026
33AQI (US)
19th February 2026
32AQI (US)
20th February 2026
29AQI (US)
21st February 2026
28AQI (US)
22nd February 2026
34AQI (US)
23rd February 2026
31AQI (US)
24th February 2026
45AQI (US)
25th February 2026
38AQI (US)
26th February 2026
30AQI (US)
27th February 2026
33AQI (US)
28th February 2026
30AQI (US)
1st March 2026
32AQI (US)
2nd March 2026
45AQI (US)
3rd March 2026
28AQI (US)
4th March 2026
40AQI (US)
5th March 2026
37AQI (US)
6th March 2026
28AQI (US)
7th March 2026
37AQI (US)
8th March 2026
52AQI (US)
9th March 2026
30AQI (US)
10th March 2026
32AQI (US)
11th March 2026
39AQI (US)
12th March 2026
48AQI (US)
13th March 2026
41AQI (US)
14th March 2026
34AQI (US)
15th March 2026
28AQI (US)
16th March 2026
21AQI (US)
17th March 2026
26AQI (US)
18th March 2026
32AQI (US)
19th March 2026
26AQI (US)
20th March 2026
39AQI (US)
21st March 2026
35AQI (US)
22nd March 2026
31AQI (US)
23rd March 2026
29AQI (US)
24th March 2026
26AQI (US)
25th March 2026
30AQI (US)
26th March 2026
19AQI (US)
27th March 2026
16AQI (US)
28th March 2026
21AQI (US)
29th March 2026
12AQI (US)
30th March 2026
32AQI (US)
31st March 2026
20AQI (US)
1st April 2026
23AQI (US)
2nd April 2026
25AQI (US)
3rd April 2026
24AQI (US)
4th April 2026
29AQI (US)
5th April 2026
22AQI (US)
6th April 2026
24AQI (US)
7th April 2026
25AQI (US)
8th April 2026
26AQI (US)
9th April 2026
27AQI (US)
10th April 2026
30AQI (US)
11th April 2026
29AQI (US)
12th April 2026
24AQI (US)
13th April 2026
41AQI (US)
14th April 2026
29AQI (US)
15th April 2026
32AQI (US)
16th April 2026
28AQI (US)
17th April 2026
18th April 2026
19AQI (US)
19th April 2026
18AQI (US)
20th April 2026
28AQI (US)
21st April 2026
41AQI (US)
22nd April 2026
23rd April 2026
21AQI (US)
24th April 2026
24AQI (US)
25th April 2026
22AQI (US)
26th April 2026
28AQI (US)
27th April 2026
17AQI (US)
28th April 2026
26AQI (US)
29th April 2026
19AQI (US)
30th April 2026
24AQI (US)
1st May 2026
24AQI (US)
2nd May 2026
23AQI (US)
3rd May 2026
24AQI (US)
4th May 2026
33AQI (US)
5th May 2026
33AQI (US)
6th May 2026
52AQI (US)
7th May 2026
22AQI (US)
8th May 2026
44AQI (US)
9th May 2026
10th May 2026
26AQI (US)
11th May 2026
25AQI (US)
12th May 2026
29AQI (US)
13th May 2026
62AQI (US)
14th May 2026
23AQI (US)
15th May 2026
42AQI (US)
16th May 2026
48AQI (US)
17th May 2026
55AQI (US)
18th May 2026
48AQI (US)
19th May 2026
45AQI (US)
20th May 2026
46AQI (US)
21st May 2026
38AQI (US)
22nd May 2026
40AQI (US)
23rd May 2026
46AQI (US)
24th May 2026
42AQI (US)
25th May 2026
45AQI (US)
26th May 2026
19AQI (US)
27th May 2026
16AQI (US)
28th May 2026
26AQI (US)
29th May 2026
34AQI (US)
30th May 2026
16AQI (US)
31st May 2026
20AQI (US)
1st June 2026
21AQI (US)
2nd June 2026
14AQI (US)
3rd June 2026
24AQI (US)
4th June 2026
16AQI (US)
5th June 2026
28AQI (US)
6th June 2026
17AQI (US)
7th June 2026
21AQI (US)
8th June 2026
22AQI (US)
9th June 2026
42AQI (US)
10th June 2026
26AQI (US)
11th June 2026
20AQI (US)
12th June 2026
24AQI (US)
13th June 2026
14AQI (US)
14th June 2026
18AQI (US)
15th June 2026
26AQI (US)
16th June 2026
52AQI (US)
17th June 2026
26AQI (US)
18th June 2026
21AQI (US)
19th June 2026
30AQI (US)
20th June 2026
34AQI (US)
21st June 2026
17AQI (US)
22nd June 2026
25AQI (US)
23rd June 2026
36AQI (US)
24th June 2026
27AQI (US)
25th June 2026
34AQI (US)
26th June 2026
37AQI (US)
27th June 2026
24AQI (US)
28th June 2026
31AQI (US)
29th June 2026
29AQI (US)
30th June 2026
16AQI (US)
1st July 2026
15AQI (US)
2nd July 2026
15AQI (US)
3rd July 2026
21AQI (US)
4th July 2026
22AQI (US)
5th July 2026
20AQI (US)
6th July 2026
28AQI (US)
7th July 2026
22AQI (US)
8th July 2026
20AQI (US)
9th July 2026
18AQI (US)
10th July 2026
23AQI (US)
11th July 2026
37AQI (US)
12th July 2026
24AQI (US)
13th July 2026
21AQI (US)
14th July 2026
34AQI (US)
15th July 2026
34AQI (US)
16th July 2026
40AQI (US)
17th July 2026
90AQI (US)
18th July 2026
54AQI (US)
19th July 2026
47AQI (US)
20th July 2026
91AQI (US)
21st July 2026
114AQI (US)
22nd July 2026
116AQI (US)
23rd July 2026
97AQI (US)
24th July 2026
64AQI (US)
25th July 2026
66AQI (US)
26th July 2026
66AQI (US)
27th July 2026
76AQI (US)
28th July 2026
79AQI (US)
29th July 2026
56AQI (US)
30th July 2026
75AQI (US)
31st July 2026
69AQI (US)
1st August 2026
72AQI (US)
2nd August 2026
50AQI (US)
3rd August 2026
95AQI (US)
4th August 2026
146AQI (US)
5th August 2026
154AQI (US)
6th August 2026
150AQI (US)
7th August 2026
124AQI (US)
8th August 2026
82AQI (US)
9th August 2026
63AQI (US)
10th August 2026
66AQI (US)
11th August 2026
71AQI (US)
12th August 2026
69AQI (US)
13th August 2026
76AQI (US)
14th August 2026
66AQI (US)
15th August 2026
77AQI (US)
16th August 2026
78AQI (US)
17th August 2026
70AQI (US)
18th August 2026
57AQI (US)
19th August 2026
59AQI (US)
20th August 2026
62AQI (US)
21st August 2026
66AQI (US)
22nd August 2026
64AQI (US)
23rd August 2026
44AQI (US)
24th August 2026
60AQI (US)
25th August 2026
53AQI (US)
26th August 2026
56AQI (US)
27th August 2026
49AQI (US)
28th August 2026
50AQI (US)
29th August 2026
69AQI (US)
30th August 2026
42AQI (US)
31st August 2026
57AQI (US)
1st September 2026
52AQI (US)
2nd September 2026
51AQI (US)
3rd September 2026
43AQI (US)
4th September 2026
31AQI (US)
5th September 2026
42AQI (US)
6th September 2026
44AQI (US)
7th September 2026
40AQI (US)
8th September 2026
32AQI (US)
9th September 2026
48AQI (US)
10th September 2026
54AQI (US)
11th September 2026
49AQI (US)
12th September 2026
52AQI (US)
13th September 2026
33AQI (US)
14th September 2026
21AQI (US)
15th September 2026
36AQI (US)
16th September 2026
42AQI (US)
17th September 2026
46AQI (US)
18th September 2026
48AQI (US)
19th September 2026
43AQI (US)
20th September 2026
46AQI (US)
21st September 2026
47AQI (US)
22nd September 2026
54AQI (US)
23rd September 2026
50AQI (US)
24th September 2026
51AQI (US)
25th September 2026
98AQI (US)
26th September 2026
30AQI (US)
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

33AQI (US)

34AQI (US)

31AQI (US)

26AQI (US)

35AQI (US)

26AQI (US)

50AQI (US)

74AQI (US)

46AQI (US)

No. of days

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

202640AQI (US)

30
1
28
30
1
28
27
3
29
1
17
12
2
5
22
3
1
19
7
213
47
5
1

Highest AQI (US) recorded in

August

74AQI (US)

Lowest AQI (US) recorded in

June

26AQI (US)

202529AQI (US)

27
4
28
31
30
31
30
31
23
8
15
15
31
25
5
23
8
325
40

Highest AQI (US) recorded in

September

47AQI (US)

Lowest AQI (US) recorded in

May

15AQI (US)

202423AQI (US)

24
7
28
1
31
30
31
29
23
7
23
8
25
5
31
28
2
31
334
30

Highest AQI (US) recorded in

July

36AQI (US)

Lowest AQI (US) recorded in

May

9AQI (US)

202323AQI (US)

31
28
31
30
30
1
30
31
22
6
2
1
30
28
3
27
2
31
349
12
2
1

Highest AQI (US) recorded in

August

50AQI (US)

Lowest AQI (US) recorded in

April

11AQI (US)

202227AQI (US)

23
6
21
1
31
17
31
30
21
3
21
5
3
18
13
19
11
28
3
263
39
3

Highest AQI (US) recorded in

September

44AQI (US)

Lowest AQI (US) recorded in

May

10AQI (US)

202125AQI (US)

25
4
28
31
30
31
30
27
4
19
9
3
25
4
1
31
25
5
30
1
332
27
4

Highest AQI (US) recorded in

August

52AQI (US)

Lowest AQI (US) recorded in

May

12AQI (US)

202037AQI (US)

13
20
18
30
31
27
4
19
3
1
3
4
30
24
6
25
6
237
19
1
3
4

Highest AQI (US) recorded in

September

109AQI (US)

Lowest AQI (US) recorded in

April

16AQI (US)

Most & Least Polluted Years Over the Last 7 Years

Most Polluted Year Recorded
2026(Avg.)
40AQI (US)
Least Polluted Year Recorded
2023(Avg.)
23AQI (US)

Pendleton's annual 2026 AQI (US) (40) shows an average percentage change of 50.3% (worsened AQI (US)) compared to previous years: 2020 (37), 2021 (25), 2022 (27), 2023 (23), 2024 (23), 2025 (29).