Ontario, 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+
November Air Quality Analysis
Ontario, Oregon, United States
2025
AQI
.
Days
AQI Trends: Highest and Lowest
Highest AQI recorded on
23rd Nov 2025
53AQILowest AQI recorded on
6th Nov 2025
25AQISame Day Analysis (28th November ):
On this day, AQI across the 1 years varied significantly: 2025 ranks 1st highest AQI at 41 of Good air quality on the same day.
Download 2024 Annual Data
World Air Quality Report
Day & Night AQI Trend: 27th Nov - 28th Nov 2025
Ontario, Oregon, United States
AQI
Day
Night
.
7 AM27th Nov 2025
5 PM
6 AM28th Nov 2025
Day time
Avg. Highest Time
2PM27th Nov
51AQI
Avg. Lowest Time
4PM27th Nov
28AQI
Night time
Avg. Highest Time
4AM28th Nov
74AQI
Avg. Lowest Time
7PM27th Nov
20AQI
In the last 24 hours,
Ontario's AQI reached its highest point of 74 at 4 AM during the Night, while the lowest point, 20, was recorded at 7 PM during the Night between 27th Nov and 28th Nov 2025.
Day & Night AQI Trend : Oct - Nov 2025
Ontario, Oregon, United States
OctNov
29th - 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 - 27th27th - 28th28th
Day
Night
29th Oct 2025457 AMAQI
29th Oct 2025488 AMAQI
29th Oct 2025529 AMAQI
29th Oct 20255310 AMAQI
29th Oct 20255111 AMAQI
29th Oct 20255012 PMAQI
29th Oct 2025511 PMAQI
29th Oct 2025482 PMAQI
29th Oct 2025433 PMAQI
29th Oct 2025314 PMAQI
29th Oct 2025215 PMAQI
29th Oct 2025296 PMAQI
29th Oct 2025397 PMAQI
29th Oct 2025468 PMAQI
29th Oct 2025499 PMAQI
29th Oct 20255110 PMAQI
29th Oct 20255211 PMAQI
30th Oct 20255312 AMAQI
30th Oct 2025511 AMAQI
30th Oct 2025502 AMAQI
30th Oct 2025453 AMAQI
30th Oct 2025454 AMAQI
30th Oct 2025505 AMAQI
30th Oct 2025486 AMAQI
--°C/°C
30th Oct 2025487 AMAQI
30th Oct 2025538 AMAQI
30th Oct 2025619 AMAQI
30th Oct 20256410 AMAQI
30th Oct 20256211 AMAQI
30th Oct 20256312 PMAQI
30th Oct 2025561 PMAQI
30th Oct 2025442 PMAQI
30th Oct 2025353 PMAQI
30th Oct 2025314 PMAQI
30th Oct 2025365 PMAQI
30th Oct 2025356 PMAQI
30th Oct 2025357 PMAQI
30th Oct 2025408 PMAQI
30th Oct 2025469 PMAQI
30th Oct 20255010 PMAQI
30th Oct 20255711 PMAQI
31st Oct 20256612 AMAQI
31st Oct 2025631 AMAQI
31st Oct 2025582 AMAQI
31st Oct 2025603 AMAQI
31st Oct 2025584 AMAQI
31st Oct 2025565 AMAQI
31st Oct 2025586 AMAQI
4°C-5/11°C
31st Oct 2025537 AMAQI
31st Oct 2025528 AMAQI
31st Oct 2025599 AMAQI
31st Oct 20256310 AMAQI
31st Oct 20256211 AMAQI
31st Oct 20256912 PMAQI
31st Oct 2025641 PMAQI
31st Oct 2025582 PMAQI
31st Oct 2025603 PMAQI
31st Oct 2025634 PMAQI
31st Oct 2025605 PMAQI
31st Oct 2025536 PMAQI
31st Oct 2025547 PMAQI
31st Oct 2025568 PMAQI
31st Oct 2025539 PMAQI
31st Oct 20255410 PMAQI
31st Oct 20255611 PMAQI
1st Nov 20256012 AMAQI
1st Nov 2025671 AMAQI
1st Nov 2025702 AMAQI
1st Nov 2025663 AMAQI
1st Nov 2025614 AMAQI
1st Nov 2025605 AMAQI
1st Nov 2025636 AMAQI
6°C-1/12°C
1st Nov 2025637 AMAQI
1st Nov 2025638 AMAQI
1st Nov 2025669 AMAQI
1st Nov 20256410 AMAQI
1st Nov 20256611 AMAQI
1st Nov 20256912 PMAQI
1st Nov 2025701 PMAQI
1st Nov 2025702 PMAQI
1st Nov 2025713 PMAQI
1st Nov 2025654 PMAQI
1st Nov 2025635 PMAQI
1st Nov 2025666 PMAQI
1st Nov 2025697 PMAQI
1st Nov 2025688 PMAQI
1st Nov 2025699 PMAQI
1st Nov 20257510 PMAQI
1st Nov 20258511 PMAQI
2nd Nov 20259012 AMAQI
2nd Nov 2025861 AMAQI
2nd Nov 2025932 AMAQI
2nd Nov 2025863 AMAQI
2nd Nov 2025854 AMAQI
2nd Nov 2025835 AMAQI
2nd Nov 2025866 AMAQI
9°C0/18°C
2nd Nov 2025777 AMAQI
2nd Nov 2025808 AMAQI
2nd Nov 2025809 AMAQI
2nd Nov 20257810 AMAQI
2nd Nov 20257511 AMAQI
2nd Nov 20257612 PMAQI
2nd Nov 2025731 PMAQI
2nd Nov 2025642 PMAQI
2nd Nov 2025643 PMAQI
2nd Nov 2025684 PMAQI
2nd Nov 2025735 PMAQI
2nd Nov 2025726 PMAQI
2nd Nov 2025737 PMAQI
2nd Nov 2025778 PMAQI
2nd Nov 2025819 PMAQI
2nd Nov 20258710 PMAQI
2nd Nov 20259011 PMAQI
3rd Nov 20259012 AMAQI
3rd Nov 2025871 AMAQI
3rd Nov 2025812 AMAQI
3rd Nov 2025763 AMAQI
3rd Nov 2025714 AMAQI
3rd Nov 2025725 AMAQI
3rd Nov 2025736 AMAQI
11°C4/16°C
3rd Nov 2025707 AMAQI
3rd Nov 2025708 AMAQI
3rd Nov 2025759 AMAQI
3rd Nov 20257210 AMAQI
3rd Nov 20257611 AMAQI
3rd Nov 20257712 PMAQI
3rd Nov 2025781 PMAQI
3rd Nov 2025792 PMAQI
3rd Nov 2025763 PMAQI
3rd Nov 2025684 PMAQI
3rd Nov 2025595 PMAQI
3rd Nov 2025536 PMAQI
3rd Nov 2025547 PMAQI
3rd Nov 2025568 PMAQI
3rd Nov 2025589 PMAQI
3rd Nov 20256010 PMAQI
3rd Nov 20256011 PMAQI
4th Nov 20256112 AMAQI
4th Nov 2025611 AMAQI
4th Nov 2025632 AMAQI
4th Nov 2025653 AMAQI
4th Nov 2025654 AMAQI
4th Nov 2025635 AMAQI
4th Nov 2025616 AMAQI
6°C0/14°C
4th Nov 2025627 AMAQI
4th Nov 2025658 AMAQI
4th Nov 2025629 AMAQI
4th Nov 20256310 AMAQI
4th Nov 20257011 AMAQI
4th Nov 20258212 PMAQI
4th Nov 2025831 PMAQI
4th Nov 2025752 PMAQI
4th Nov 2025653 PMAQI
4th Nov 2025624 PMAQI
4th Nov 2025545 PMAQI
4th Nov 2025466 PMAQI
4th Nov 2025487 PMAQI
4th Nov 2025538 PMAQI
4th Nov 2025569 PMAQI
4th Nov 20256110 PMAQI
4th Nov 20256811 PMAQI
5th Nov 20257012 AMAQI
5th Nov 2025671 AMAQI
5th Nov 2025682 AMAQI
5th Nov 2025643 AMAQI
5th Nov 2025634 AMAQI
5th Nov 2025635 AMAQI
5th Nov 2025726 AMAQI
11°C6/19°C
5th Nov 2025707 AMAQI
5th Nov 2025698 AMAQI
5th Nov 2025759 AMAQI
5th Nov 20255810 AMAQI
5th Nov 20255711 AMAQI
5th Nov 20255912 PMAQI
5th Nov 2025611 PMAQI
5th Nov 2025572 PMAQI
5th Nov 2025503 PMAQI
5th Nov 2025464 PMAQI
5th Nov 2025485 PMAQI
5th Nov 2025506 PMAQI
5th Nov 2025497 PMAQI
5th Nov 2025468 PMAQI
5th Nov 2025459 PMAQI
5th Nov 20254710 PMAQI
5th Nov 20254911 PMAQI
6th Nov 20254812 AMAQI
6th Nov 2025471 AMAQI
6th Nov 2025482 AMAQI
6th Nov 2025493 AMAQI
6th Nov 2025524 AMAQI
6th Nov 2025535 AMAQI
6th Nov 2025496 AMAQI
11°C7/18°C
6th Nov 2025457 AMAQI
6th Nov 2025498 AMAQI
6th Nov 2025509 AMAQI
6th Nov 20255110 AMAQI
6th Nov 20255811 AMAQI
6th Nov 20256312 PMAQI
6th Nov 2025571 PMAQI
6th Nov 2025522 PMAQI
6th Nov 2025513 PMAQI
6th Nov 2025484 PMAQI
6th Nov 2025455 PMAQI
6th Nov 2025436 PMAQI
6th Nov 2025447 PMAQI
6th Nov 2025438 PMAQI
6th Nov 2025449 PMAQI
6th Nov 20254510 PMAQI
6th Nov 20254711 PMAQI
7th Nov 20255012 AMAQI
7th Nov 2025491 AMAQI
7th Nov 2025502 AMAQI
7th Nov 2025493 AMAQI
7th Nov 2025534 AMAQI
7th Nov 2025545 AMAQI
7th Nov 2025496 AMAQI
11°C7/19°C
7th Nov 2025487 AMAQI
7th Nov 2025488 AMAQI
7th Nov 2025559 AMAQI
7th Nov 20255610 AMAQI
7th Nov 20256211 AMAQI
7th Nov 20256612 PMAQI
7th Nov 2025591 PMAQI
7th Nov 2025552 PMAQI
7th Nov 2025503 PMAQI
7th Nov 2025464 PMAQI
7th Nov 2025395 PMAQI
7th Nov 2025386 PMAQI
7th Nov 2025447 PMAQI
7th Nov 2025498 PMAQI
7th Nov 2025549 PMAQI
7th Nov 20256210 PMAQI
7th Nov 20256711 PMAQI
8th Nov 20256712 AMAQI
8th Nov 2025651 AMAQI
8th Nov 2025622 AMAQI
8th Nov 2025663 AMAQI
8th Nov 2025714 AMAQI
8th Nov 2025625 AMAQI
8th Nov 2025556 AMAQI
10°C5/16°C
8th Nov 2025687 AMAQI
8th Nov 2025558 AMAQI
8th Nov 2025489 AMAQI
8th Nov 20254910 AMAQI
8th Nov 20254711 AMAQI
8th Nov 20254912 PMAQI
8th Nov 2025451 PMAQI
8th Nov 2025402 PMAQI
8th Nov 2025443 PMAQI
8th Nov 2025444 PMAQI
8th Nov 2025515 PMAQI
8th Nov 2025586 PMAQI
8th Nov 2025567 PMAQI
8th Nov 2025538 PMAQI
8th Nov 2025529 PMAQI
8th Nov 20255410 PMAQI
8th Nov 20256411 PMAQI
9th Nov 20257212 AMAQI
9th Nov 2025721 AMAQI
9th Nov 2025712 AMAQI
9th Nov 2025713 AMAQI
9th Nov 2025694 AMAQI
9th Nov 2025685 AMAQI
9th Nov 2025686 AMAQI
6°C1/14°C
9th Nov 2025657 AMAQI
9th Nov 2025558 AMAQI
9th Nov 2025509 AMAQI
9th Nov 20255610 AMAQI
9th Nov 20256011 AMAQI
9th Nov 20254912 PMAQI
9th Nov 2025401 PMAQI
9th Nov 2025392 PMAQI
9th Nov 2025373 PMAQI
9th Nov 2025354 PMAQI
9th Nov 2025345 PMAQI
9th Nov 2025286 PMAQI
9th Nov 2025317 PMAQI
9th Nov 2025378 PMAQI
9th Nov 2025439 PMAQI
9th Nov 20254910 PMAQI
9th Nov 20255211 PMAQI
10th Nov 20255612 AMAQI
10th Nov 2025601 AMAQI
10th Nov 2025572 AMAQI
10th Nov 2025503 AMAQI
10th Nov 2025494 AMAQI
10th Nov 2025455 AMAQI
10th Nov 2025416 AMAQI
6°C0/14°C
10th Nov 2025447 AMAQI
10th Nov 2025478 AMAQI
10th Nov 2025509 AMAQI
10th Nov 20255210 AMAQI
10th Nov 20255311 AMAQI
10th Nov 20255112 PMAQI
10th Nov 2025491 PMAQI
10th Nov 2025452 PMAQI
10th Nov 2025393 PMAQI
10th Nov 2025324 PMAQI
10th Nov 2025355 PMAQI
10th Nov 2025456 PMAQI
10th Nov 2025527 PMAQI
10th Nov 2025608 PMAQI
10th Nov 2025659 PMAQI
10th Nov 20256410 PMAQI
10th Nov 20256211 PMAQI
11th Nov 20256212 AMAQI
11th Nov 2025631 AMAQI
11th Nov 2025612 AMAQI
11th Nov 2025603 AMAQI
11th Nov 2025554 AMAQI
11th Nov 2025545 AMAQI
11th Nov 2025556 AMAQI
6°C0/15°C
11th Nov 2025537 AMAQI
11th Nov 2025538 AMAQI
11th Nov 2025579 AMAQI
11th Nov 20256110 AMAQI
11th Nov 20255811 AMAQI
11th Nov 20255612 PMAQI
11th Nov 2025541 PMAQI
11th Nov 2025532 PMAQI
11th Nov 2025503 PMAQI
11th Nov 2025464 PMAQI
11th Nov 2025485 PMAQI
11th Nov 2025526 PMAQI
11th Nov 2025547 PMAQI
11th Nov 2025628 PMAQI
11th Nov 2025659 PMAQI
11th Nov 20256410 PMAQI
11th Nov 20256411 PMAQI
12th Nov 20256512 AMAQI
12th Nov 2025651 AMAQI
12th Nov 2025652 AMAQI
12th Nov 2025693 AMAQI
12th Nov 2025684 AMAQI
12th Nov 2025665 AMAQI
12th Nov 2025656 AMAQI
6°C0/15°C
12th Nov 2025627 AMAQI
12th Nov 2025638 AMAQI
12th Nov 2025679 AMAQI
12th Nov 20256710 AMAQI
12th Nov 20256611 AMAQI
12th Nov 20257012 PMAQI
12th Nov 2025721 PMAQI
12th Nov 2025672 PMAQI
12th Nov 2025633 PMAQI
12th Nov 2025644 PMAQI
12th Nov 2025665 PMAQI
12th Nov 2025706 PMAQI
12th Nov 2025717 PMAQI
12th Nov 2025718 PMAQI
12th Nov 2025779 PMAQI
12th Nov 20257510 PMAQI
12th Nov 20257411 PMAQI
13th Nov 20257412 AMAQI
13th Nov 2025761 AMAQI
13th Nov 2025732 AMAQI
13th Nov 2025693 AMAQI
13th Nov 2025644 AMAQI
13th Nov 2025625 AMAQI
13th Nov 2025626 AMAQI
8°C1/17°C
13th Nov 2025617 AMAQI
13th Nov 2025608 AMAQI
13th Nov 2025609 AMAQI
13th Nov 20256210 AMAQI
13th Nov 20255911 AMAQI
13th Nov 20255712 PMAQI
13th Nov 2025611 PMAQI
13th Nov 2025622 PMAQI
13th Nov 2025563 PMAQI
13th Nov 2025554 PMAQI
13th Nov 2025555 PMAQI
13th Nov 2025556 PMAQI
13th Nov 2025567 PMAQI
13th Nov 2025578 PMAQI
13th Nov 2025609 PMAQI
13th Nov 20256210 PMAQI
13th Nov 20256011 PMAQI
14th Nov 20255212 AMAQI
14th Nov 2025481 AMAQI
14th Nov 2025512 AMAQI
14th Nov 2025543 AMAQI
14th Nov 2025574 AMAQI
14th Nov 2025575 AMAQI
14th Nov 2025546 AMAQI
9°C2/17°C
14th Nov 2025547 AMAQI
14th Nov 2025528 AMAQI
14th Nov 2025529 AMAQI
14th Nov 20255610 AMAQI
14th Nov 20255511 AMAQI
14th Nov 20255312 PMAQI
14th Nov 2025531 PMAQI
14th Nov 2025522 PMAQI
14th Nov 2025493 PMAQI
14th Nov 2025444 PMAQI
14th Nov 2025435 PMAQI
14th Nov 2025476 PMAQI
14th Nov 2025427 PMAQI
14th Nov 2025388 PMAQI
14th Nov 2025449 PMAQI
14th Nov 20254310 PMAQI
14th Nov 20253611 PMAQI
15th Nov 20253412 AMAQI
15th Nov 2025411 AMAQI
15th Nov 2025432 AMAQI
15th Nov 2025463 AMAQI
15th Nov 2025484 AMAQI
15th Nov 2025455 AMAQI
15th Nov 2025396 AMAQI
11°C6/18°C
15th Nov 2025317 AMAQI
15th Nov 2025338 AMAQI
15th Nov 2025389 AMAQI
15th Nov 20253710 AMAQI
15th Nov 20254111 AMAQI
15th Nov 20254112 PMAQI
15th Nov 2025391 PMAQI
15th Nov 2025382 PMAQI
15th Nov 2025353 PMAQI
15th Nov 2025284 PMAQI
15th Nov 2025215 PMAQI
15th Nov 2025186 PMAQI
15th Nov 2025227 PMAQI
15th Nov 2025328 PMAQI
15th Nov 2025389 PMAQI
15th Nov 20253810 PMAQI
15th Nov 20254311 PMAQI
16th Nov 20255012 AMAQI
16th Nov 2025451 AMAQI
16th Nov 2025382 AMAQI
16th Nov 2025353 AMAQI
16th Nov 2025364 AMAQI
16th Nov 2025365 AMAQI
16th Nov 2025346 AMAQI
9°C3/17°C
16th Nov 2025297 AMAQI
16th Nov 2025198 AMAQI
16th Nov 2025249 AMAQI
16th Nov 20252210 AMAQI
16th Nov 20252811 AMAQI
16th Nov 20253612 PMAQI
16th Nov 2025401 PMAQI
16th Nov 2025372 PMAQI
16th Nov 2025283 PMAQI
16th Nov 2025254 PMAQI
16th Nov 2025245 PMAQI
16th Nov 2025216 PMAQI
16th Nov 2025217 PMAQI
16th Nov 2025238 PMAQI
16th Nov 2025239 PMAQI
16th Nov 20253610 PMAQI
16th Nov 20254711 PMAQI
17th Nov 20255012 AMAQI
17th Nov 2025541 AMAQI
17th Nov 2025552 AMAQI
17th Nov 2025543 AMAQI
17th Nov 2025424 AMAQI
17th Nov 2025315 AMAQI
17th Nov 2025456 AMAQI
9°C5/15°C
17th Nov 2025497 AMAQI
17th Nov 2025388 AMAQI
17th Nov 2025179 AMAQI
17th Nov 20251710 AMAQI
17th Nov 20252011 AMAQI
17th Nov 20252512 PMAQI
17th Nov 2025291 PMAQI
17th Nov 2025352 PMAQI
17th Nov 2025313 PMAQI
17th Nov 2025224 PMAQI
17th Nov 2025175 PMAQI
17th Nov 2025206 PMAQI
17th Nov 2025307 PMAQI
17th Nov 2025348 PMAQI
17th Nov 2025269 PMAQI
17th Nov 20252710 PMAQI
17th Nov 20253511 PMAQI
18th Nov 20253412 AMAQI
18th Nov 2025271 AMAQI
18th Nov 2025212 AMAQI
18th Nov 2025313 AMAQI
18th Nov 2025424 AMAQI
18th Nov 2025425 AMAQI
18th Nov 2025336 AMAQI
9°C6/15°C
18th Nov 2025237 AMAQI
18th Nov 2025288 AMAQI
18th Nov 2025329 AMAQI
18th Nov 20253310 AMAQI
18th Nov 20252911 AMAQI
18th Nov 20253412 PMAQI
18th Nov 2025421 PMAQI
18th Nov 2025392 PMAQI
18th Nov 2025363 PMAQI
18th Nov 2025384 PMAQI
18th Nov 2025345 PMAQI
18th Nov 2025296 PMAQI
18th Nov 2025297 PMAQI
18th Nov 2025308 PMAQI
18th Nov 2025349 PMAQI
18th Nov 20253310 PMAQI
18th Nov 20253411 PMAQI
19th Nov 20253612 AMAQI
19th Nov 2025421 AMAQI
19th Nov 2025462 AMAQI
19th Nov 2025463 AMAQI
19th Nov 2025374 AMAQI
19th Nov 2025295 AMAQI
19th Nov 2025286 AMAQI
6°C3/11°C
19th Nov 2025377 AMAQI
19th Nov 2025408 AMAQI
19th Nov 2025329 AMAQI
19th Nov 20253610 AMAQI
19th Nov 20255311 AMAQI
19th Nov 20256812 PMAQI
19th Nov 2025621 PMAQI
19th Nov 2025492 PMAQI
19th Nov 2025403 PMAQI
19th Nov 2025384 PMAQI
19th Nov 2025455 PMAQI
19th Nov 2025496 PMAQI
19th Nov 2025457 PMAQI
19th Nov 2025398 PMAQI
19th Nov 2025469 PMAQI
19th Nov 20254710 PMAQI
19th Nov 20254511 PMAQI
20th Nov 20254512 AMAQI
20th Nov 2025481 AMAQI
20th Nov 2025522 AMAQI
20th Nov 2025533 AMAQI
20th Nov 2025524 AMAQI
20th Nov 2025545 AMAQI
20th Nov 2025516 AMAQI
7°C4/12°C
20th Nov 2025567 AMAQI
20th Nov 2025508 AMAQI
20th Nov 2025489 AMAQI
20th Nov 20254910 AMAQI
20th Nov 20254911 AMAQI
20th Nov 20255412 PMAQI
20th Nov 2025551 PMAQI
20th Nov 2025542 PMAQI
20th Nov 2025503 PMAQI
20th Nov 2025474 PMAQI
20th Nov 2025375 PMAQI
20th Nov 2025326 PMAQI
20th Nov 2025347 PMAQI
20th Nov 2025398 PMAQI
20th Nov 2025419 PMAQI
20th Nov 20253510 PMAQI
20th Nov 20253511 PMAQI
21st Nov 20253212 AMAQI
21st Nov 2025301 AMAQI
21st Nov 2025342 AMAQI
21st Nov 2025353 AMAQI
21st Nov 2025294 AMAQI
21st Nov 2025265 AMAQI
21st Nov 2025296 AMAQI
7°C4/11°C
21st Nov 2025237 AMAQI
21st Nov 2025198 AMAQI
21st Nov 2025289 AMAQI
21st Nov 20252910 AMAQI
21st Nov 20252411 AMAQI
21st Nov 20252212 PMAQI
21st Nov 2025261 PMAQI
21st Nov 2025342 PMAQI
21st Nov 2025353 PMAQI
21st Nov 2025354 PMAQI
21st Nov 2025355 PMAQI
21st Nov 2025276 PMAQI
21st Nov 2025267 PMAQI
21st Nov 2025328 PMAQI
21st Nov 2025339 PMAQI
21st Nov 20252810 PMAQI
21st Nov 20252411 PMAQI
22nd Nov 20252812 AMAQI
22nd Nov 2025361 AMAQI
22nd Nov 2025432 AMAQI
22nd Nov 2025463 AMAQI
22nd Nov 2025444 AMAQI
22nd Nov 2025365 AMAQI
22nd Nov 2025286 AMAQI
6°C2/12°C
22nd Nov 2025277 AMAQI
22nd Nov 2025338 AMAQI
22nd Nov 2025369 AMAQI
22nd Nov 20253410 AMAQI
22nd Nov 20253311 AMAQI
22nd Nov 20253112 PMAQI
22nd Nov 2025311 PMAQI
22nd Nov 2025302 PMAQI
22nd Nov 2025253 PMAQI
22nd Nov 2025244 PMAQI
22nd Nov 2025285 PMAQI
22nd Nov 2025306 PMAQI
22nd Nov 2025287 PMAQI
22nd Nov 2025298 PMAQI
22nd Nov 2025299 PMAQI
22nd Nov 20252710 PMAQI
22nd Nov 20252911 PMAQI
23rd Nov 20253512 AMAQI
23rd Nov 2025351 AMAQI
23rd Nov 2025412 AMAQI
23rd Nov 2025463 AMAQI
23rd Nov 2025504 AMAQI
23rd Nov 2025565 AMAQI
23rd Nov 2025586 AMAQI
3°C0/9°C
23rd Nov 2025557 AMAQI
23rd Nov 2025528 AMAQI
23rd Nov 2025529 AMAQI
23rd Nov 20255110 AMAQI
23rd Nov 20255311 AMAQI
23rd Nov 20255212 PMAQI
23rd Nov 2025501 PMAQI
23rd Nov 2025512 PMAQI
23rd Nov 2025463 PMAQI
23rd Nov 2025364 PMAQI
23rd Nov 2025365 PMAQI
23rd Nov 2025446 PMAQI
23rd Nov 2025507 PMAQI
23rd Nov 2025518 PMAQI
23rd Nov 2025489 PMAQI
23rd Nov 20255110 PMAQI
23rd Nov 20255911 PMAQI
24th Nov 20256212 AMAQI
24th Nov 2025621 AMAQI
24th Nov 2025632 AMAQI
24th Nov 2025623 AMAQI
24th Nov 2025614 AMAQI
24th Nov 2025585 AMAQI
24th Nov 2025596 AMAQI
2°C-1/6°C
24th Nov 2025597 AMAQI
24th Nov 2025548 AMAQI
24th Nov 2025569 AMAQI
24th Nov 20255910 AMAQI
24th Nov 20256211 AMAQI
24th Nov 20255912 PMAQI
24th Nov 2025551 PMAQI
24th Nov 2025532 PMAQI
24th Nov 2025483 PMAQI
24th Nov 2025464 PMAQI
24th Nov 2025435 PMAQI
24th Nov 2025436 PMAQI
24th Nov 2025477 PMAQI
24th Nov 2025508 PMAQI
24th Nov 2025499 PMAQI
24th Nov 20255210 PMAQI
24th Nov 20256011 PMAQI
25th Nov 20256112 AMAQI
25th Nov 2025631 AMAQI
25th Nov 2025652 AMAQI
25th Nov 2025633 AMAQI
25th Nov 2025644 AMAQI
25th Nov 2025635 AMAQI
25th Nov 2025586 AMAQI
4°C0/11°C
25th Nov 2025557 AMAQI
25th Nov 2025548 AMAQI
25th Nov 2025559 AMAQI
25th Nov 20255710 AMAQI
25th Nov 20256211 AMAQI
25th Nov 20256712 PMAQI
25th Nov 2025551 PMAQI
25th Nov 2025332 PMAQI
25th Nov 2025233 PMAQI
25th Nov 2025224 PMAQI
25th Nov 2025295 PMAQI
25th Nov 2025326 PMAQI
25th Nov 2025267 PMAQI
25th Nov 2025228 PMAQI
25th Nov 2025289 PMAQI
25th Nov 20253510 PMAQI
25th Nov 20253811 PMAQI
26th Nov 20253812 AMAQI
26th Nov 2025431 AMAQI
26th Nov 2025442 AMAQI
26th Nov 2025393 AMAQI
26th Nov 2025474 AMAQI
26th Nov 2025555 AMAQI
26th Nov 2025506 AMAQI
1°C-3/8°C
26th Nov 2025447 AMAQI
26th Nov 2025468 AMAQI
26th Nov 2025489 AMAQI
26th Nov 20254710 AMAQI
26th Nov 20254511 AMAQI
26th Nov 20254412 PMAQI
26th Nov 2025451 PMAQI
26th Nov 2025322 PMAQI
26th Nov 2025303 PMAQI
26th Nov 2025264 PMAQI
26th Nov 2025215 PMAQI
26th Nov 2025236 PMAQI
26th Nov 2025317 PMAQI
26th Nov 2025318 PMAQI
26th Nov 2025289 PMAQI
26th Nov 20253110 PMAQI
26th Nov 20253811 PMAQI
27th Nov 20253912 AMAQI
27th Nov 2025371 AMAQI
27th Nov 2025402 AMAQI
27th Nov 2025523 AMAQI
27th Nov 2025454 AMAQI
27th Nov 2025415 AMAQI
27th Nov 2025426 AMAQI
4°C0/9°C
27th Nov 2025377 AMAQI
27th Nov 2025348 AMAQI
27th Nov 2025339 AMAQI
27th Nov 20253410 AMAQI
27th Nov 20253911 AMAQI
27th Nov 20254512 PMAQI
27th Nov 2025491 PMAQI
27th Nov 2025512 PMAQI
27th Nov 2025423 PMAQI
27th Nov 2025284 PMAQI
27th Nov 2025315 PMAQI
27th Nov 2025276 PMAQI
27th Nov 2025207 PMAQI
27th Nov 2025358 PMAQI
27th Nov 2025489 PMAQI
27th Nov 20256110 PMAQI
27th Nov 20255811 PMAQI
28th Nov 20256312 AMAQI
28th Nov 2025721 AMAQI
28th Nov 2025682 AMAQI
28th Nov 2025683 AMAQI
28th Nov 2025744 AMAQI
28th Nov 2025745 AMAQI
28th Nov 2025646 AMAQI
4°C1/6°C
28th Nov 2025597 AMAQI
7 AM28th Nov 2025628 AMAQI
28th Nov 2025619 AMAQI
28th Nov 20255510 AMAQI
28th Nov 20256111 AMAQI
28th Nov 20255912 PMAQI
12 PM28th Nov 2025501 PMAQI
28th Nov 2025492 PMAQI
28th Nov 2025543 PMAQI
28th Nov 2025494 PMAQI
28th Nov 2025465 PMAQI
5 PM28th Nov 2025386 PMAQI
28th Nov 2025227 PMAQI
12 AM
6 AM
3°C-1/11°C
Day time
Avg. Highest Time
12 PM
55AQI
1 hours / Day
30 hours / Month
Avg. Lowest Time
4 PM - 5 PM
42AQI
2 hours / Day
60 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 12 PM to 12 PM (Avg. 55), while the lowest AQI was between 4 PM to 5 PM (Avg. 42).
Night time
Avg. Highest Time
12 AM - 4 AM
55AQI
5 hours / Day
150 hours / Month
Avg. Lowest Time
6 PM - 7 PM
42AQI
2 hours / Day
60 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 12 AM to 4 AM (Avg. 55), while the lowest AQI was between 6 PM to 7 PM (Avg. 42).
2025 Days Vs Air Quality
Ontario, Oregon, United States
2025
93%
230
7%
18
Total number of days with different AQI categories in last 333 days in 2025 (32 days remaining)
Good
230 DaysModerate
18 DaysPoor
0 DaysUnhealthy
0 DaysSevere
0 DaysHazardous
0 DaysUnder WHO’s Safe Air Quality Limits: 93%
Health Risk Level:
Very Low
In 2025, 93% of 333 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
Ontario, Oregon, United States
AQI levels in 2025
AQI
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 2025
-1th undefined 2025
-1th undefined 2025
1st January 2025
2nd January 2025
3rd January 2025
4th January 2025
5th January 2025
6th January 2025
7th January 2025
8th January 2025
9th January 2025
10th January 2025
11th January 2025
12th January 2025
13th January 2025
14th January 2025
15th January 2025
16th January 2025
17th January 2025
18th January 2025
19th January 2025
20th January 2025
21st January 2025
22nd January 2025
23rd January 2025
24th January 2025
25th January 2025
26th January 2025
27th January 2025
28th January 2025
29th January 2025
30th January 2025
31st January 2025
1st February 2025
2nd February 2025
3rd February 2025
4th February 2025
5th February 2025
6th February 2025
7th February 2025
8th February 2025
9th February 2025
10th February 2025
11th February 2025
12th February 2025
13th February 2025
14th February 2025
15th February 2025
16th February 2025
17th February 2025
18th February 2025
19th February 2025
20th February 2025
21st February 2025
22nd February 2025
23rd February 2025
24th February 2025
25th February 2025
26th February 2025
27th February 2025
28th February 2025
1st March 2025
2nd March 2025
3rd March 2025
4th March 2025
5th March 2025
6th March 2025
7th March 2025
8th March 2025
9th March 2025
10th March 2025
11th March 2025
12th March 2025
13th March 2025
14th March 2025
15th March 2025
16th March 2025
17th March 2025
18th March 2025
19th March 2025
20th March 2025
21st March 2025
22nd March 2025
23rd March 2025
24th March 2025
25th March 2025
26th March 2025
26AQI
26AQI
27th March 2025
25AQI
25AQI
28th March 2025
23AQI
23AQI
29th March 2025
21AQI
21AQI
30th March 2025
27AQI
27AQI
31st March 2025
26AQI
26AQI
1st April 2025
24AQI
24AQI
2nd April 2025
24AQI
24AQI
3rd April 2025
22AQI
22AQI
4th April 2025
22AQI
22AQI
5th April 2025
32AQI
32AQI
6th April 2025
36AQI
36AQI
7th April 2025
27AQI
27AQI
8th April 2025
21AQI
21AQI
9th April 2025
27AQI
27AQI
10th April 2025
32AQI
32AQI
11th April 2025
28AQI
28AQI
12th April 2025
23AQI
23AQI
13th April 2025
24AQI
24AQI
14th April 2025
33AQI
33AQI
15th April 2025
37AQI
37AQI
16th April 2025
30AQI
30AQI
17th April 2025
21AQI
21AQI
18th April 2025
20AQI
20AQI
19th April 2025
26AQI
26AQI
20th April 2025
25AQI
25AQI
21st April 2025
18AQI
18AQI
22nd April 2025
20AQI
20AQI
23rd April 2025
22AQI
22AQI
24th April 2025
29AQI
29AQI
25th April 2025
36AQI
36AQI
26th April 2025
26AQI
26AQI
27th April 2025
29AQI
29AQI
28th April 2025
26AQI
26AQI
29th April 2025
24AQI
24AQI
30th April 2025
23AQI
23AQI
1st May 2025
29AQI
29AQI
2nd May 2025
29AQI
29AQI
3rd May 2025
28AQI
28AQI
4th May 2025
18AQI
18AQI
5th May 2025
20AQI
20AQI
6th May 2025
21AQI
21AQI
7th May 2025
27AQI
27AQI
8th May 2025
25AQI
25AQI
9th May 2025
31AQI
31AQI
10th May 2025
34AQI
34AQI
11th May 2025
27AQI
27AQI
12th May 2025
21AQI
21AQI
13th May 2025
18AQI
18AQI
14th May 2025
18AQI
18AQI
15th May 2025
21AQI
21AQI
16th May 2025
20AQI
20AQI
17th May 2025
22AQI
22AQI
18th May 2025
18AQI
18AQI
19th May 2025
22AQI
22AQI
20th May 2025
20AQI
20AQI
21st May 2025
18AQI
18AQI
22nd May 2025
21AQI
21AQI
23rd May 2025
21AQI
21AQI
24th May 2025
25AQI
25AQI
25th May 2025
30AQI
30AQI
26th May 2025
26AQI
26AQI
27th May 2025
22AQI
22AQI
28th May 2025
26AQI
26AQI
29th May 2025
30AQI
30AQI
30th May 2025
21AQI
21AQI
31st May 2025
30AQI
30AQI
1st June 2025
26AQI
26AQI
2nd June 2025
18AQI
18AQI
3rd June 2025
19AQI
19AQI
4th June 2025
21AQI
21AQI
5th June 2025
23AQI
23AQI
6th June 2025
28AQI
28AQI
7th June 2025
31AQI
31AQI
8th June 2025
28AQI
28AQI
9th June 2025
30AQI
30AQI
10th June 2025
32AQI
32AQI
11th June 2025
33AQI
33AQI
12th June 2025
33AQI
33AQI
13th June 2025
31AQI
31AQI
14th June 2025
25AQI
25AQI
15th June 2025
25AQI
25AQI
16th June 2025
28AQI
28AQI
17th June 2025
27AQI
27AQI
18th June 2025
28AQI
28AQI
19th June 2025
24AQI
24AQI
20th June 2025
26AQI
26AQI
21st June 2025
24AQI
24AQI
22nd June 2025
22AQI
22AQI
23rd June 2025
26AQI
26AQI
24th June 2025
33AQI
33AQI
25th June 2025
33AQI
33AQI
26th June 2025
26AQI
26AQI
27th June 2025
23AQI
23AQI
28th June 2025
21AQI
21AQI
29th June 2025
23AQI
23AQI
30th June 2025
24AQI
24AQI
1st July 2025
30AQI
30AQI
2nd July 2025
29AQI
29AQI
3rd July 2025
27AQI
27AQI
4th July 2025
25AQI
25AQI
5th July 2025
39AQI
39AQI
6th July 2025
30AQI
30AQI
7th July 2025
25AQI
25AQI
8th July 2025
29AQI
29AQI
9th July 2025
28AQI
28AQI
10th July 2025
23AQI
23AQI
11th July 2025
24AQI
24AQI
12th July 2025
26AQI
26AQI
13th July 2025
28AQI
28AQI
14th July 2025
26AQI
26AQI
15th July 2025
24AQI
24AQI
16th July 2025
27AQI
27AQI
17th July 2025
37AQI
37AQI
18th July 2025
40AQI
40AQI
19th July 2025
36AQI
36AQI
20th July 2025
33AQI
33AQI
21st July 2025
23AQI
23AQI
22nd July 2025
27AQI
27AQI
23rd July 2025
29AQI
29AQI
24th July 2025
32AQI
32AQI
25th July 2025
28AQI
28AQI
26th July 2025
23AQI
23AQI
27th July 2025
23AQI
23AQI
28th July 2025
24AQI
24AQI
29th July 2025
23AQI
23AQI
30th July 2025
30AQI
30AQI
31st July 2025
35AQI
35AQI
1st August 2025
37AQI
37AQI
2nd August 2025
42AQI
42AQI
3rd August 2025
46AQI
46AQI
4th August 2025
26AQI
26AQI
5th August 2025
26AQI
26AQI
6th August 2025
29AQI
29AQI
7th August 2025
25AQI
25AQI
8th August 2025
21AQI
21AQI
9th August 2025
21AQI
21AQI
10th August 2025
24AQI
24AQI
11th August 2025
33AQI
33AQI
12th August 2025
27AQI
27AQI
13th August 2025
39AQI
39AQI
14th August 2025
27AQI
27AQI
15th August 2025
27AQI
27AQI
16th August 2025
25AQI
25AQI
17th August 2025
18AQI
18AQI
18th August 2025
22AQI
22AQI
19th August 2025
27AQI
27AQI
20th August 2025
26AQI
26AQI
21st August 2025
22AQI
22AQI
22nd August 2025
40AQI
40AQI
23rd August 2025
57AQI
57AQI
24th August 2025
63AQI
63AQI
25th August 2025
52AQI
52AQI
26th August 2025
55AQI
55AQI
27th August 2025
41AQI
41AQI
28th August 2025
57AQI
57AQI
29th August 2025
55AQI
55AQI
30th August 2025
54AQI
54AQI
31st August 2025
56AQI
56AQI
1st September 2025
55AQI
55AQI
2nd September 2025
55AQI
55AQI
3rd September 2025
55AQI
55AQI
4th September 2025
57AQI
57AQI
5th September 2025
83AQI
83AQI
6th September 2025
75AQI
75AQI
7th September 2025
51AQI
51AQI
8th September 2025
48AQI
48AQI
9th September 2025
37AQI
37AQI
10th September 2025
50AQI
50AQI
11th September 2025
37AQI
37AQI
12th September 2025
31AQI
31AQI
13th September 2025
43AQI
43AQI
14th September 2025
44AQI
44AQI
15th September 2025
22AQI
22AQI
16th September 2025
28AQI
28AQI
17th September 2025
30AQI
30AQI
18th September 2025
32AQI
32AQI
19th September 2025
37AQI
37AQI
20th September 2025
40AQI
40AQI
21st September 2025
36AQI
36AQI
22nd September 2025
25AQI
25AQI
23rd September 2025
41AQI
41AQI
24th September 2025
40AQI
40AQI
25th September 2025
46AQI
46AQI
26th September 2025
46AQI
46AQI
27th September 2025
56AQI
56AQI
28th September 2025
60AQI
60AQI
29th September 2025
46AQI
46AQI
30th September 2025
35AQI
35AQI
1st October 2025
25AQI
25AQI
2nd October 2025
22AQI
22AQI
3rd October 2025
16AQI
16AQI
4th October 2025
39AQI
39AQI
5th October 2025
46AQI
46AQI
6th October 2025
33AQI
33AQI
7th October 2025
31AQI
31AQI
8th October 2025
43AQI
43AQI
9th October 2025
36AQI
36AQI
10th October 2025
44AQI
44AQI
11th October 2025
38AQI
38AQI
12th October 2025
22AQI
22AQI
13th October 2025
25AQI
25AQI
14th October 2025
30AQI
30AQI
15th October 2025
38AQI
38AQI
16th October 2025
40AQI
40AQI
17th October 2025
46AQI
46AQI
18th October 2025
45AQI
45AQI
19th October 2025
42AQI
42AQI
20th October 2025
22AQI
22AQI
21st October 2025
39AQI
39AQI
22nd October 2025
41AQI
41AQI
23rd October 2025
40AQI
40AQI
24th October 2025
46AQI
46AQI
25th October 2025
47AQI
47AQI
26th October 2025
17AQI
17AQI
27th October 2025
25AQI
25AQI
28th October 2025
35AQI
35AQI
29th October 2025
38AQI
38AQI
30th October 2025
39AQI
39AQI
31st October 2025
43AQI
43AQI
1st November 2025
42AQI
42AQI
2nd November 2025
44AQI
44AQI
3rd November 2025
36AQI
36AQI
4th November 2025
39AQI
39AQI
5th November 2025
27AQI
27AQI
6th November 2025
25AQI
25AQI
7th November 2025
30AQI
30AQI
8th November 2025
33AQI
33AQI
9th November 2025
41AQI
41AQI
10th November 2025
43AQI
43AQI
11th November 2025
43AQI
43AQI
12th November 2025
43AQI
43AQI
13th November 2025
48AQI
48AQI
14th November 2025
49AQI
49AQI
15th November 2025
40AQI
40AQI
16th November 2025
37AQI
37AQI
17th November 2025
36AQI
36AQI
18th November 2025
34AQI
34AQI
19th November 2025
38AQI
38AQI
20th November 2025
39AQI
39AQI
21st November 2025
32AQI
32AQI
22nd November 2025
47AQI
47AQI
23rd November 2025
53AQI
53AQI
24th November 2025
44AQI
44AQI
25th November 2025
41AQI
41AQI
26th November 2025
38AQI
38AQI
27th November 2025
34AQI
34AQI
28th November 2025
41AQI
41AQI
29th November 2025
30th November 2025
1st December 2025
2nd December 2025
3rd December 2025
4th December 2025
5th December 2025
6th December 2025
7th December 2025
8th December 2025
9th December 2025
10th December 2025
11th December 2025
12th December 2025
13th December 2025
14th December 2025
15th December 2025
16th December 2025
17th December 2025
18th December 2025
19th December 2025
20th December 2025
21st December 2025
22nd December 2025
23rd December 2025
24th December 2025
25th December 2025
26th December 2025
27th December 2025
28th December 2025
29th December 2025
30th December 2025
31st December 2025
25AQI
26AQI
24AQI
26AQI
28AQI
36AQI
45AQI
35AQI
39AQI
No. of days
Jan.Feb.Mar.Apr.MayJun.Jul.Aug.Sep.Oct.Nov.Dec.Total Days
202532AQI
6
30
31
30
31
23
8
21
9
31
27
1
230
18
Highest AQI recorded in
September45AQI
Lowest AQI recorded in
May24AQI
Most & Least Polluted Years Over the Last 1 Years
Most Polluted Year Recorded
2025(Avg.)
32AQILeast Polluted Year Recorded
2025(Avg.)
32AQIOntario's annual 2025 AQI (32) shows an average percentage change of NaN% (improved AQI) compared to previous years: .
