Quincy, 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+
September Air Quality Analysis
Quincy, Washington, United States
2021
2022
2023
2024
2025
AQI
.
Days
AQI Trends: Highest and Lowest
Highest AQI recorded on
12th Sep 2022
160AQILowest AQI recorded on
19th Sep 2021
9AQISame Day Analysis (29th September ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 1st highest AQI at 64 of Moderate air quality on the same day.
Download 2024 Annual Data
World Air Quality Report
Day & Night AQI Trend: 29th Sep - 30th Sep 2025
Quincy, Washington, United States
AQI
Day
Night
.
6 AM29th Sep 2025
7 PM
5 AM30th Sep 2025
Day time
Avg. Highest Time
6PM29th Sep
63AQI
Avg. Lowest Time
6AM29th Sep
49AQI
Night time
Avg. Highest Time
7PM29th Sep
49AQI
Avg. Lowest Time
5AM30th Sep
23AQI
In the last 24 hours,
Quincy's AQI reached its highest point of 63 at 6 PM during the Day, while the lowest point, 23, was recorded at 5 AM during the Night between 29th Sep and 30th Sep 2025.
Day & Night AQI Trend : Aug - Sep 2025
Quincy, Washington, United States
AugSep
31st - 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 - 29th29th - 30th30th
Day
Night
31st Aug 2025416 AMAQI
31st Aug 2025377 AMAQI
31st Aug 2025378 AMAQI
31st Aug 2025389 AMAQI
31st Aug 20253810 AMAQI
31st Aug 20253811 AMAQI
31st Aug 20254612 PMAQI
31st Aug 2025531 PMAQI
31st Aug 2025542 PMAQI
31st Aug 2025613 PMAQI
31st Aug 2025544 PMAQI
31st Aug 2025545 PMAQI
31st Aug 2025536 PMAQI
31st Aug 2025467 PMAQI
31st Aug 2025498 PMAQI
31st Aug 2025489 PMAQI
31st Aug 20254710 PMAQI
31st Aug 20254711 PMAQI
1st Sep 20254612 AMAQI
1st Sep 2025461 AMAQI
1st Sep 2025462 AMAQI
1st Sep 2025473 AMAQI
1st Sep 2025444 AMAQI
1st Sep 2025455 AMAQI
26°C15/37°C
1st Sep 2025456 AMAQI
1st Sep 2025477 AMAQI
1st Sep 2025478 AMAQI
1st Sep 2025469 AMAQI
1st Sep 20255210 AMAQI
1st Sep 20254611 AMAQI
1st Sep 20255112 PMAQI
1st Sep 2025541 PMAQI
1st Sep 2025562 PMAQI
1st Sep 2025553 PMAQI
1st Sep 2025504 PMAQI
1st Sep 2025515 PMAQI
1st Sep 2025496 PMAQI
1st Sep 2025497 PMAQI
1st Sep 2025468 PMAQI
1st Sep 2025469 PMAQI
1st Sep 20255010 PMAQI
1st Sep 20254311 PMAQI
2nd Sep 20254312 AMAQI
2nd Sep 2025441 AMAQI
2nd Sep 2025462 AMAQI
2nd Sep 2025453 AMAQI
2nd Sep 2025454 AMAQI
2nd Sep 2025455 AMAQI
26°C18/36°C
2nd Sep 2025466 AMAQI
2nd Sep 2025467 AMAQI
2nd Sep 2025488 AMAQI
2nd Sep 2025499 AMAQI
2nd Sep 20255110 AMAQI
2nd Sep 20255111 AMAQI
2nd Sep 20255212 PMAQI
2nd Sep 2025541 PMAQI
2nd Sep 2025632 PMAQI
2nd Sep 2025573 PMAQI
2nd Sep 2025714 PMAQI
2nd Sep 2025645 PMAQI
2nd Sep 2025656 PMAQI
2nd Sep 2025477 PMAQI
2nd Sep 2025548 PMAQI
2nd Sep 2025589 PMAQI
2nd Sep 20255910 PMAQI
2nd Sep 20255711 PMAQI
3rd Sep 20255612 AMAQI
3rd Sep 2025571 AMAQI
3rd Sep 2025602 AMAQI
3rd Sep 2025593 AMAQI
3rd Sep 2025594 AMAQI
3rd Sep 2025585 AMAQI
28°C17/39°C
3rd Sep 2025576 AMAQI
3rd Sep 2025587 AMAQI
3rd Sep 2025588 AMAQI
3rd Sep 2025629 AMAQI
3rd Sep 20256010 AMAQI
3rd Sep 20256111 AMAQI
3rd Sep 20256012 PMAQI
3rd Sep 2025631 PMAQI
3rd Sep 2025702 PMAQI
3rd Sep 2025773 PMAQI
3rd Sep 2025704 PMAQI
3rd Sep 2025655 PMAQI
3rd Sep 2025596 PMAQI
3rd Sep 2025607 PMAQI
3rd Sep 2025618 PMAQI
3rd Sep 2025609 PMAQI
3rd Sep 20256010 PMAQI
3rd Sep 20255811 PMAQI
4th Sep 20255712 AMAQI
4th Sep 2025561 AMAQI
4th Sep 2025572 AMAQI
4th Sep 2025523 AMAQI
4th Sep 2025484 AMAQI
4th Sep 2025525 AMAQI
28°C17/41°C
4th Sep 2025626 AMAQI
4th Sep 2025607 AMAQI
4th Sep 2025558 AMAQI
4th Sep 2025559 AMAQI
4th Sep 20255610 AMAQI
4th Sep 20255711 AMAQI
4th Sep 20256412 PMAQI
4th Sep 2025621 PMAQI
4th Sep 2025712 PMAQI
4th Sep 2025653 PMAQI
4th Sep 2025734 PMAQI
4th Sep 2025715 PMAQI
4th Sep 2025766 PMAQI
4th Sep 2025607 PMAQI
4th Sep 2025738 PMAQI
4th Sep 2025849 PMAQI
4th Sep 20258010 PMAQI
4th Sep 20257211 PMAQI
5th Sep 20258812 AMAQI
5th Sep 2025921 AMAQI
5th Sep 2025882 AMAQI
5th Sep 2025803 AMAQI
5th Sep 2025834 AMAQI
5th Sep 2025815 AMAQI
28°C17/39°C
5th Sep 2025876 AMAQI
5th Sep 2025857 AMAQI
5th Sep 2025798 AMAQI
5th Sep 2025799 AMAQI
5th Sep 20258010 AMAQI
5th Sep 20259211 AMAQI
5th Sep 20259412 PMAQI
5th Sep 2025961 PMAQI
5th Sep 2025852 PMAQI
5th Sep 20251043 PMAQI
5th Sep 2025934 PMAQI
5th Sep 20251185 PMAQI
5th Sep 2025826 PMAQI
5th Sep 2025887 PMAQI
5th Sep 2025838 PMAQI
5th Sep 2025999 PMAQI
5th Sep 20258310 PMAQI
5th Sep 20259511 PMAQI
6th Sep 202510112 AMAQI
6th Sep 2025901 AMAQI
6th Sep 2025932 AMAQI
6th Sep 2025943 AMAQI
6th Sep 2025934 AMAQI
6th Sep 20251125 AMAQI
27°C17/36°C
6th Sep 20251056 AMAQI
6th Sep 20251037 AMAQI
6th Sep 20251158 AMAQI
6th Sep 2025979 AMAQI
6th Sep 202511110 AMAQI
6th Sep 202510711 AMAQI
6th Sep 202511712 PMAQI
6th Sep 20251101 PMAQI
6th Sep 20251112 PMAQI
6th Sep 20251143 PMAQI
6th Sep 20251184 PMAQI
6th Sep 20251135 PMAQI
6th Sep 2025966 PMAQI
6th Sep 20251037 PMAQI
6th Sep 20251048 PMAQI
6th Sep 20251039 PMAQI
6th Sep 202510310 PMAQI
6th Sep 20259611 PMAQI
7th Sep 202511312 AMAQI
7th Sep 20251161 AMAQI
7th Sep 20251152 AMAQI
7th Sep 2025913 AMAQI
7th Sep 2025824 AMAQI
7th Sep 2025985 AMAQI
24°C16/35°C
7th Sep 2025876 AMAQI
7th Sep 20251017 AMAQI
7th Sep 2025708 AMAQI
7th Sep 2025609 AMAQI
7th Sep 20255510 AMAQI
7th Sep 20255111 AMAQI
7th Sep 20255512 PMAQI
7th Sep 2025641 PMAQI
7th Sep 2025742 PMAQI
7th Sep 2025633 PMAQI
7th Sep 2025594 PMAQI
7th Sep 2025585 PMAQI
7th Sep 2025506 PMAQI
7th Sep 2025677 PMAQI
7th Sep 2025588 PMAQI
7th Sep 2025579 PMAQI
7th Sep 20255110 PMAQI
7th Sep 20254511 PMAQI
8th Sep 20254612 AMAQI
8th Sep 2025481 AMAQI
8th Sep 2025482 AMAQI
8th Sep 2025463 AMAQI
8th Sep 2025464 AMAQI
8th Sep 2025465 AMAQI
24°C16/33°C
8th Sep 2025456 AMAQI
8th Sep 2025497 AMAQI
8th Sep 2025518 AMAQI
8th Sep 2025609 AMAQI
8th Sep 20255910 AMAQI
8th Sep 20256311 AMAQI
8th Sep 20256412 PMAQI
8th Sep 2025661 PMAQI
8th Sep 2025642 PMAQI
8th Sep 2025643 PMAQI
8th Sep 2025604 PMAQI
8th Sep 2025535 PMAQI
8th Sep 2025476 PMAQI
8th Sep 2025477 PMAQI
8th Sep 2025458 PMAQI
8th Sep 2025439 PMAQI
8th Sep 20253910 PMAQI
8th Sep 20253811 PMAQI
9th Sep 20254012 AMAQI
9th Sep 2025421 AMAQI
9th Sep 2025392 AMAQI
9th Sep 2025383 AMAQI
9th Sep 2025394 AMAQI
9th Sep 2025415 AMAQI
22°C13/30°C
9th Sep 2025436 AMAQI
9th Sep 2025457 AMAQI
9th Sep 2025508 AMAQI
9th Sep 2025529 AMAQI
9th Sep 20255110 AMAQI
9th Sep 20255211 AMAQI
9th Sep 20255112 PMAQI
9th Sep 2025521 PMAQI
9th Sep 2025502 PMAQI
9th Sep 2025533 PMAQI
9th Sep 2025534 PMAQI
9th Sep 2025475 PMAQI
9th Sep 2025466 PMAQI
9th Sep 2025437 PMAQI
9th Sep 2025398 PMAQI
9th Sep 2025359 PMAQI
9th Sep 20253310 PMAQI
9th Sep 20253111 PMAQI
10th Sep 20253712 AMAQI
10th Sep 2025441 AMAQI
10th Sep 2025442 AMAQI
10th Sep 2025453 AMAQI
10th Sep 2025434 AMAQI
10th Sep 2025405 AMAQI
21°C12/30°C
10th Sep 2025396 AMAQI
10th Sep 2025407 AMAQI
10th Sep 2025408 AMAQI
10th Sep 2025459 AMAQI
10th Sep 20255010 AMAQI
10th Sep 20255611 AMAQI
10th Sep 20255412 PMAQI
10th Sep 2025551 PMAQI
10th Sep 2025652 PMAQI
10th Sep 2025583 PMAQI
10th Sep 2025514 PMAQI
10th Sep 2025475 PMAQI
10th Sep 2025516 PMAQI
10th Sep 2025477 PMAQI
10th Sep 2025488 PMAQI
10th Sep 2025469 PMAQI
10th Sep 20254610 PMAQI
10th Sep 20254511 PMAQI
11th Sep 20254712 AMAQI
11th Sep 2025481 AMAQI
11th Sep 2025482 AMAQI
11th Sep 2025513 AMAQI
11th Sep 2025484 AMAQI
11th Sep 2025475 AMAQI
22°C14/32°C
11th Sep 2025446 AMAQI
11th Sep 2025457 AMAQI
11th Sep 2025478 AMAQI
11th Sep 2025509 AMAQI
11th Sep 20255410 AMAQI
11th Sep 20255111 AMAQI
11th Sep 20254912 PMAQI
11th Sep 2025481 PMAQI
11th Sep 2025462 PMAQI
11th Sep 2025443 PMAQI
11th Sep 2025464 PMAQI
11th Sep 2025465 PMAQI
11th Sep 2025476 PMAQI
11th Sep 2025477 PMAQI
11th Sep 2025468 PMAQI
11th Sep 2025469 PMAQI
11th Sep 20254710 PMAQI
11th Sep 20254711 PMAQI
12th Sep 20254912 AMAQI
12th Sep 2025491 AMAQI
12th Sep 2025482 AMAQI
12th Sep 2025493 AMAQI
12th Sep 2025494 AMAQI
12th Sep 2025485 AMAQI
21°C13/30°C
12th Sep 2025486 AMAQI
12th Sep 2025457 AMAQI
12th Sep 2025498 AMAQI
12th Sep 2025459 AMAQI
12th Sep 20254310 AMAQI
12th Sep 20254511 AMAQI
12th Sep 20254412 PMAQI
12th Sep 2025431 PMAQI
12th Sep 2025442 PMAQI
12th Sep 2025453 PMAQI
12th Sep 2025464 PMAQI
12th Sep 2025455 PMAQI
12th Sep 2025456 PMAQI
12th Sep 2025457 PMAQI
12th Sep 2025458 PMAQI
12th Sep 2025449 PMAQI
12th Sep 20254510 PMAQI
12th Sep 20254511 PMAQI
13th Sep 20254912 AMAQI
13th Sep 2025481 AMAQI
13th Sep 2025482 AMAQI
13th Sep 2025483 AMAQI
13th Sep 2025484 AMAQI
13th Sep 2025495 AMAQI
21°C11/30°C
13th Sep 2025476 AMAQI
13th Sep 2025457 AMAQI
13th Sep 2025458 AMAQI
13th Sep 2025449 AMAQI
13th Sep 20254410 AMAQI
13th Sep 20254411 AMAQI
13th Sep 20254712 PMAQI
13th Sep 2025461 PMAQI
13th Sep 2025462 PMAQI
13th Sep 2025453 PMAQI
13th Sep 2025474 PMAQI
13th Sep 2025475 PMAQI
13th Sep 2025486 PMAQI
13th Sep 2025467 PMAQI
13th Sep 2025468 PMAQI
13th Sep 2025469 PMAQI
13th Sep 20254410 PMAQI
13th Sep 20254711 PMAQI
14th Sep 20254612 AMAQI
14th Sep 2025481 AMAQI
14th Sep 2025482 AMAQI
14th Sep 2025483 AMAQI
14th Sep 2025524 AMAQI
14th Sep 2025505 AMAQI
21°C12/31°C
14th Sep 2025506 AMAQI
14th Sep 2025487 AMAQI
14th Sep 2025468 AMAQI
14th Sep 2025439 AMAQI
14th Sep 20253810 AMAQI
14th Sep 20253811 AMAQI
14th Sep 20253512 PMAQI
14th Sep 2025341 PMAQI
14th Sep 2025322 PMAQI
14th Sep 2025333 PMAQI
14th Sep 2025324 PMAQI
14th Sep 2025335 PMAQI
14th Sep 2025356 PMAQI
14th Sep 2025447 PMAQI
14th Sep 2025438 PMAQI
14th Sep 2025439 PMAQI
14th Sep 20254110 PMAQI
14th Sep 20253011 PMAQI
15th Sep 20253012 AMAQI
15th Sep 2025331 AMAQI
15th Sep 2025242 AMAQI
15th Sep 2025233 AMAQI
15th Sep 2025224 AMAQI
15th Sep 2025225 AMAQI
16°C12/22°C
15th Sep 2025216 AMAQI
15th Sep 2025247 AMAQI
15th Sep 2025298 AMAQI
15th Sep 2025299 AMAQI
15th Sep 20252010 AMAQI
15th Sep 20252111 AMAQI
15th Sep 20252112 PMAQI
15th Sep 2025241 PMAQI
15th Sep 2025252 PMAQI
15th Sep 2025253 PMAQI
15th Sep 2025254 PMAQI
15th Sep 2025275 PMAQI
15th Sep 2025276 PMAQI
15th Sep 2025257 PMAQI
15th Sep 2025248 PMAQI
15th Sep 2025269 PMAQI
15th Sep 20252610 PMAQI
15th Sep 20252811 PMAQI
16th Sep 20252912 AMAQI
16th Sep 2025281 AMAQI
16th Sep 2025282 AMAQI
16th Sep 2025273 AMAQI
16th Sep 2025264 AMAQI
16th Sep 2025255 AMAQI
18°C9/26°C
16th Sep 2025286 AMAQI
16th Sep 2025257 AMAQI
16th Sep 2025278 AMAQI
16th Sep 2025279 AMAQI
16th Sep 20252810 AMAQI
16th Sep 20252911 AMAQI
16th Sep 20252812 PMAQI
16th Sep 2025291 PMAQI
16th Sep 2025302 PMAQI
16th Sep 2025313 PMAQI
16th Sep 2025334 PMAQI
16th Sep 2025335 PMAQI
16th Sep 2025316 PMAQI
16th Sep 2025287 PMAQI
16th Sep 2025278 PMAQI
16th Sep 2025279 PMAQI
16th Sep 20252610 PMAQI
16th Sep 20252611 PMAQI
17th Sep 20252912 AMAQI
17th Sep 2025331 AMAQI
17th Sep 2025332 AMAQI
17th Sep 2025293 AMAQI
17th Sep 2025304 AMAQI
17th Sep 2025295 AMAQI
19°C9/28°C
17th Sep 2025296 AMAQI
17th Sep 2025287 AMAQI
17th Sep 2025288 AMAQI
17th Sep 2025289 AMAQI
17th Sep 20252910 AMAQI
17th Sep 20253011 AMAQI
17th Sep 20253112 PMAQI
17th Sep 2025381 PMAQI
17th Sep 2025392 PMAQI
17th Sep 2025373 PMAQI
17th Sep 2025384 PMAQI
17th Sep 2025365 PMAQI
17th Sep 2025356 PMAQI
17th Sep 2025307 PMAQI
17th Sep 2025308 PMAQI
17th Sep 2025319 PMAQI
17th Sep 20253010 PMAQI
17th Sep 20253011 PMAQI
18th Sep 20253312 AMAQI
18th Sep 2025331 AMAQI
18th Sep 2025292 AMAQI
18th Sep 2025293 AMAQI
18th Sep 2025324 AMAQI
18th Sep 2025305 AMAQI
21°C9/32°C
18th Sep 2025316 AMAQI
18th Sep 2025307 AMAQI
18th Sep 2025308 AMAQI
18th Sep 2025309 AMAQI
18th Sep 20253010 AMAQI
18th Sep 20253011 AMAQI
18th Sep 20253312 PMAQI
18th Sep 2025361 PMAQI
18th Sep 2025372 PMAQI
18th Sep 2025403 PMAQI
18th Sep 2025404 PMAQI
18th Sep 2025435 PMAQI
18th Sep 2025466 PMAQI
18th Sep 2025367 PMAQI
18th Sep 2025348 PMAQI
18th Sep 2025389 PMAQI
18th Sep 20253810 PMAQI
18th Sep 20253511 PMAQI
19th Sep 20253612 AMAQI
19th Sep 2025391 AMAQI
19th Sep 2025452 AMAQI
19th Sep 2025473 AMAQI
19th Sep 2025474 AMAQI
19th Sep 2025485 AMAQI
21°C11/31°C
19th Sep 2025496 AMAQI
19th Sep 2025487 AMAQI
19th Sep 2025468 AMAQI
19th Sep 2025489 AMAQI
19th Sep 20254810 AMAQI
19th Sep 20255011 AMAQI
19th Sep 20255012 PMAQI
19th Sep 2025501 PMAQI
19th Sep 2025492 PMAQI
19th Sep 2025493 PMAQI
19th Sep 2025504 PMAQI
19th Sep 2025505 PMAQI
19th Sep 2025506 PMAQI
19th Sep 2025477 PMAQI
19th Sep 2025468 PMAQI
19th Sep 2025479 PMAQI
19th Sep 20254710 PMAQI
19th Sep 20254611 PMAQI
20th Sep 20254512 AMAQI
20th Sep 2025471 AMAQI
20th Sep 2025482 AMAQI
20th Sep 2025463 AMAQI
20th Sep 2025464 AMAQI
20th Sep 2025445 AMAQI
22°C12/32°C
20th Sep 2025436 AMAQI
20th Sep 2025447 AMAQI
20th Sep 2025448 AMAQI
20th Sep 2025449 AMAQI
20th Sep 20254510 AMAQI
20th Sep 20254411 AMAQI
20th Sep 20254512 PMAQI
20th Sep 2025481 PMAQI
20th Sep 2025492 PMAQI
20th Sep 2025483 PMAQI
20th Sep 2025494 PMAQI
20th Sep 2025485 PMAQI
20th Sep 2025496 PMAQI
20th Sep 2025487 PMAQI
20th Sep 2025478 PMAQI
20th Sep 2025469 PMAQI
20th Sep 20254610 PMAQI
20th Sep 20254711 PMAQI
21st Sep 20254812 AMAQI
21st Sep 2025481 AMAQI
21st Sep 2025462 AMAQI
21st Sep 2025453 AMAQI
21st Sep 2025454 AMAQI
21st Sep 2025435 AMAQI
22°C13/33°C
21st Sep 2025416 AMAQI
21st Sep 2025427 AMAQI
21st Sep 2025428 AMAQI
21st Sep 2025419 AMAQI
21st Sep 20254010 AMAQI
21st Sep 20253911 AMAQI
21st Sep 20253412 PMAQI
21st Sep 2025341 PMAQI
21st Sep 2025352 PMAQI
21st Sep 2025383 PMAQI
21st Sep 2025394 PMAQI
21st Sep 2025425 PMAQI
21st Sep 2025426 PMAQI
21st Sep 2025447 PMAQI
21st Sep 2025438 PMAQI
21st Sep 2025419 PMAQI
21st Sep 20253610 PMAQI
21st Sep 20253611 PMAQI
22nd Sep 20253512 AMAQI
22nd Sep 2025391 AMAQI
22nd Sep 2025402 AMAQI
22nd Sep 2025343 AMAQI
22nd Sep 2025304 AMAQI
22nd Sep 2025295 AMAQI
17°C10/24°C
22nd Sep 2025296 AMAQI
22nd Sep 2025287 AMAQI
22nd Sep 2025328 AMAQI
22nd Sep 2025399 AMAQI
22nd Sep 20254010 AMAQI
22nd Sep 20254011 AMAQI
22nd Sep 20254112 PMAQI
22nd Sep 2025421 PMAQI
22nd Sep 2025392 PMAQI
22nd Sep 2025363 PMAQI
22nd Sep 2025364 PMAQI
22nd Sep 2025365 PMAQI
22nd Sep 2025386 PMAQI
22nd Sep 2025377 PMAQI
22nd Sep 2025358 PMAQI
22nd Sep 2025369 PMAQI
22nd Sep 20253410 PMAQI
22nd Sep 20253411 PMAQI
23rd Sep 20253512 AMAQI
23rd Sep 2025361 AMAQI
23rd Sep 2025382 AMAQI
23rd Sep 2025333 AMAQI
23rd Sep 2025324 AMAQI
23rd Sep 2025355 AMAQI
16°C10/24°C
23rd Sep 2025386 AMAQI
23rd Sep 2025397 AMAQI
23rd Sep 2025408 AMAQI
23rd Sep 2025419 AMAQI
23rd Sep 20254110 AMAQI
23rd Sep 20254011 AMAQI
23rd Sep 20254312 PMAQI
23rd Sep 2025461 PMAQI
23rd Sep 2025472 PMAQI
23rd Sep 2025463 PMAQI
23rd Sep 2025444 PMAQI
23rd Sep 2025425 PMAQI
23rd Sep 2025406 PMAQI
23rd Sep 2025397 PMAQI
23rd Sep 2025388 PMAQI
23rd Sep 2025389 PMAQI
23rd Sep 20253810 PMAQI
23rd Sep 20253811 PMAQI
24th Sep 20253912 AMAQI
24th Sep 2025391 AMAQI
24th Sep 2025322 AMAQI
24th Sep 2025323 AMAQI
24th Sep 2025314 AMAQI
24th Sep 2025305 AMAQI
17°C8/27°C
24th Sep 2025346 AMAQI
24th Sep 2025407 AMAQI
24th Sep 2025428 AMAQI
24th Sep 2025449 AMAQI
24th Sep 20254510 AMAQI
24th Sep 20254411 AMAQI
24th Sep 20254312 PMAQI
24th Sep 2025481 PMAQI
24th Sep 2025472 PMAQI
24th Sep 2025443 PMAQI
24th Sep 2025444 PMAQI
24th Sep 2025435 PMAQI
24th Sep 2025446 PMAQI
24th Sep 2025447 PMAQI
24th Sep 2025448 PMAQI
24th Sep 2025439 PMAQI
24th Sep 20254310 PMAQI
24th Sep 20254311 PMAQI
25th Sep 20257412 AMAQI
25th Sep 2025881 AMAQI
25th Sep 2025852 AMAQI
25th Sep 2025823 AMAQI
25th Sep 2025784 AMAQI
25th Sep 2025755 AMAQI
19°C10/29°C
25th Sep 2025706 AMAQI
25th Sep 2025707 AMAQI
25th Sep 2025778 AMAQI
25th Sep 2025749 AMAQI
25th Sep 20257010 AMAQI
25th Sep 20257511 AMAQI
25th Sep 20257612 PMAQI
25th Sep 2025711 PMAQI
25th Sep 2025712 PMAQI
25th Sep 2025793 PMAQI
25th Sep 20251084 PMAQI
25th Sep 20251085 PMAQI
25th Sep 20251096 PMAQI
25th Sep 2025647 PMAQI
25th Sep 2025678 PMAQI
25th Sep 2025589 PMAQI
25th Sep 20253610 PMAQI
25th Sep 20253411 PMAQI
26th Sep 20253212 AMAQI
26th Sep 2025301 AMAQI
26th Sep 2025302 AMAQI
26th Sep 2025273 AMAQI
26th Sep 2025264 AMAQI
26th Sep 2025255 AMAQI
18°C9/29°C
26th Sep 2025246 AMAQI
26th Sep 2025247 AMAQI
26th Sep 2025248 AMAQI
26th Sep 2025389 AMAQI
26th Sep 20254610 AMAQI
26th Sep 20254811 AMAQI
26th Sep 20255012 PMAQI
26th Sep 2025481 PMAQI
26th Sep 2025522 PMAQI
26th Sep 2025603 PMAQI
26th Sep 2025594 PMAQI
26th Sep 2025565 PMAQI
26th Sep 2025546 PMAQI
26th Sep 2025567 PMAQI
26th Sep 2025558 PMAQI
26th Sep 2025469 PMAQI
26th Sep 20254510 PMAQI
26th Sep 20254711 PMAQI
27th Sep 20255012 AMAQI
27th Sep 2025501 AMAQI
27th Sep 2025482 AMAQI
27th Sep 2025493 AMAQI
27th Sep 2025454 AMAQI
27th Sep 2025415 AMAQI
17°C10/25°C
27th Sep 2025436 AMAQI
27th Sep 2025447 AMAQI
27th Sep 2025478 AMAQI
27th Sep 2025499 AMAQI
27th Sep 20254810 AMAQI
27th Sep 20254911 AMAQI
27th Sep 20255412 PMAQI
27th Sep 2025581 PMAQI
27th Sep 2025532 PMAQI
27th Sep 2025543 PMAQI
27th Sep 2025564 PMAQI
27th Sep 2025535 PMAQI
27th Sep 2025486 PMAQI
27th Sep 2025467 PMAQI
27th Sep 2025508 PMAQI
27th Sep 2025549 PMAQI
27th Sep 20255610 PMAQI
27th Sep 20255611 PMAQI
28th Sep 20255712 AMAQI
28th Sep 2025551 AMAQI
28th Sep 2025512 AMAQI
28th Sep 2025493 AMAQI
28th Sep 2025444 AMAQI
28th Sep 2025425 AMAQI
17°C9/26°C
28th Sep 2025446 AMAQI
28th Sep 2025467 AMAQI
28th Sep 2025468 AMAQI
28th Sep 2025499 AMAQI
28th Sep 20255210 AMAQI
28th Sep 20255511 AMAQI
28th Sep 20255312 PMAQI
28th Sep 2025591 PMAQI
28th Sep 2025692 PMAQI
28th Sep 2025773 PMAQI
28th Sep 2025764 PMAQI
28th Sep 2025715 PMAQI
28th Sep 2025696 PMAQI
28th Sep 2025657 PMAQI
28th Sep 2025588 PMAQI
28th Sep 2025549 PMAQI
28th Sep 20255310 PMAQI
28th Sep 20255311 PMAQI
29th Sep 20255212 AMAQI
29th Sep 2025511 AMAQI
29th Sep 2025492 AMAQI
29th Sep 2025483 AMAQI
29th Sep 2025534 AMAQI
29th Sep 2025565 AMAQI
18°C10/27°C
29th Sep 2025496 AMAQI
29th Sep 2025507 AMAQI
29th Sep 2025508 AMAQI
29th Sep 2025509 AMAQI
29th Sep 20255310 AMAQI
29th Sep 20255811 AMAQI
29th Sep 20255712 PMAQI
29th Sep 2025531 PMAQI
29th Sep 2025522 PMAQI
29th Sep 2025543 PMAQI
29th Sep 2025524 PMAQI
29th Sep 2025565 PMAQI
29th Sep 2025636 PMAQI
29th Sep 2025497 PMAQI
29th Sep 2025398 PMAQI
29th Sep 2025339 PMAQI
29th Sep 20253410 PMAQI
29th Sep 20253211 PMAQI
30th Sep 20254012 AMAQI
30th Sep 2025371 AMAQI
30th Sep 2025462 AMAQI
30th Sep 2025363 AMAQI
30th Sep 2025234 AMAQI
30th Sep 2025235 AMAQI
17°C11/25°C
30th Sep 2025206 AMAQI
6 AM30th Sep 2025177 AMAQI
30th Sep 2025208 AMAQI
30th Sep 2025319 AMAQI
30th Sep 20252610 AMAQI
30th Sep 20253211 AMAQI
30th Sep 20254212 PMAQI
12 PM30th Sep 2025431 PMAQI
30th Sep 2025332 PMAQI
30th Sep 2025153 PMAQI
7 PM
12 AM
5 AM
--°C/°C
Day time
Avg. Highest Time
4 PM - 5 PM
56AQI
2 hours / Day
60 hours / Month
Avg. Lowest Time
6 AM - 10 AM
47AQI
5 hours / Day
150 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 4 PM to 5 PM (Avg. 56), while the lowest AQI was between 6 AM to 10 AM (Avg. 47).
Night time
Avg. Highest Time
12 AM - 2 AM
50AQI
3 hours / Day
90 hours / Month
Avg. Lowest Time
4 AM - 5 AM
47AQI
2 hours / Day
60 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 12 AM to 2 AM (Avg. 50), while the lowest AQI was between 4 AM to 5 AM (Avg. 47).
2025 Days Vs Air Quality
Quincy, Washington, United States
2025
91%
248
8%
22
0.7%
2
Total number of days with different AQI categories in last 273 days in 2025 (92 days remaining)
Good
248 DaysModerate
22 DaysPoor
2 DaysUnhealthy
0 DaysSevere
0 DaysHazardous
0 DaysUnder WHO’s Safe Air Quality Limits: 91%
Health Risk Level:
Very Low
In 2025, 91% of 273 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
Quincy, Washington, 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
31AQI
31AQI
2nd January 2025
24AQI
24AQI
3rd January 2025
20AQI
20AQI
4th January 2025
20AQI
20AQI
5th January 2025
20AQI
20AQI
6th January 2025
22AQI
22AQI
7th January 2025
20AQI
20AQI
8th January 2025
20AQI
20AQI
9th January 2025
22AQI
22AQI
10th January 2025
24AQI
24AQI
11th January 2025
21AQI
21AQI
12th January 2025
20AQI
20AQI
13th January 2025
24AQI
24AQI
14th January 2025
30AQI
30AQI
15th January 2025
32AQI
32AQI
16th January 2025
36AQI
36AQI
17th January 2025
23AQI
23AQI
18th January 2025
24AQI
24AQI
19th January 2025
25AQI
25AQI
20th January 2025
23AQI
23AQI
21st January 2025
28AQI
28AQI
22nd January 2025
35AQI
35AQI
23rd January 2025
38AQI
38AQI
24th January 2025
30AQI
30AQI
25th January 2025
20AQI
20AQI
26th January 2025
22AQI
22AQI
27th January 2025
26AQI
26AQI
28th January 2025
32AQI
32AQI
29th January 2025
38AQI
38AQI
30th January 2025
46AQI
46AQI
31st January 2025
51AQI
51AQI
1st February 2025
22AQI
22AQI
2nd February 2025
20AQI
20AQI
3rd February 2025
20AQI
20AQI
4th February 2025
19AQI
19AQI
5th February 2025
19AQI
19AQI
6th February 2025
23AQI
23AQI
7th February 2025
22AQI
22AQI
8th February 2025
29AQI
29AQI
9th February 2025
26AQI
26AQI
10th February 2025
20AQI
20AQI
11th February 2025
23AQI
23AQI
12th February 2025
27AQI
27AQI
13th February 2025
24AQI
24AQI
14th February 2025
22AQI
22AQI
15th February 2025
26AQI
26AQI
16th February 2025
23AQI
23AQI
17th February 2025
26AQI
26AQI
18th February 2025
25AQI
25AQI
19th February 2025
25AQI
25AQI
20th February 2025
24AQI
24AQI
21st February 2025
28AQI
28AQI
22nd February 2025
37AQI
37AQI
23rd February 2025
27AQI
27AQI
24th February 2025
18AQI
18AQI
25th February 2025
21AQI
21AQI
26th February 2025
19AQI
19AQI
27th February 2025
20AQI
20AQI
28th February 2025
22AQI
22AQI
1st March 2025
23AQI
23AQI
2nd March 2025
22AQI
22AQI
3rd March 2025
18AQI
18AQI
4th March 2025
18AQI
18AQI
5th March 2025
17AQI
17AQI
6th March 2025
15AQI
15AQI
7th March 2025
16AQI
16AQI
8th March 2025
20AQI
20AQI
9th March 2025
20AQI
20AQI
10th March 2025
16AQI
16AQI
11th March 2025
17AQI
17AQI
12th March 2025
17AQI
17AQI
13th March 2025
16AQI
16AQI
14th March 2025
17AQI
17AQI
15th March 2025
16AQI
16AQI
16th March 2025
14AQI
14AQI
17th March 2025
15AQI
15AQI
18th March 2025
14AQI
14AQI
19th March 2025
17AQI
17AQI
20th March 2025
16AQI
16AQI
21st March 2025
14AQI
14AQI
22nd March 2025
15AQI
15AQI
23rd March 2025
15AQI
15AQI
24th March 2025
15AQI
15AQI
25th March 2025
21AQI
21AQI
26th March 2025
20AQI
20AQI
27th March 2025
16AQI
16AQI
28th March 2025
16AQI
16AQI
29th March 2025
14AQI
14AQI
30th March 2025
16AQI
16AQI
31st March 2025
15AQI
15AQI
1st April 2025
16AQI
16AQI
2nd April 2025
16AQI
16AQI
3rd April 2025
16AQI
16AQI
4th April 2025
19AQI
19AQI
5th April 2025
19AQI
19AQI
6th April 2025
28AQI
28AQI
7th April 2025
18AQI
18AQI
8th April 2025
13AQI
13AQI
9th April 2025
13AQI
13AQI
10th April 2025
16AQI
16AQI
11th April 2025
15AQI
15AQI
12th April 2025
16AQI
16AQI
13th April 2025
18AQI
18AQI
14th April 2025
22AQI
22AQI
15th April 2025
28AQI
28AQI
16th April 2025
19AQI
19AQI
17th April 2025
16AQI
16AQI
18th April 2025
19AQI
19AQI
19th April 2025
19AQI
19AQI
20th April 2025
14AQI
14AQI
21st April 2025
12AQI
12AQI
22nd April 2025
12AQI
12AQI
23rd April 2025
24AQI
24AQI
24th April 2025
28AQI
28AQI
25th April 2025
26AQI
26AQI
26th April 2025
26AQI
26AQI
27th April 2025
26AQI
26AQI
28th April 2025
18AQI
18AQI
29th April 2025
13AQI
13AQI
30th April 2025
14AQI
14AQI
1st May 2025
20AQI
20AQI
2nd May 2025
19AQI
19AQI
3rd May 2025
16AQI
16AQI
4th May 2025
13AQI
13AQI
5th May 2025
13AQI
13AQI
6th May 2025
18AQI
18AQI
7th May 2025
21AQI
21AQI
8th May 2025
14AQI
14AQI
9th May 2025
19AQI
19AQI
10th May 2025
22AQI
22AQI
11th May 2025
16AQI
16AQI
12th May 2025
18AQI
18AQI
13th May 2025
18AQI
18AQI
14th May 2025
16AQI
16AQI
15th May 2025
14AQI
14AQI
16th May 2025
13AQI
13AQI
17th May 2025
12AQI
12AQI
18th May 2025
12AQI
12AQI
19th May 2025
15AQI
15AQI
20th May 2025
10AQI
10AQI
21st May 2025
12AQI
12AQI
22nd May 2025
16AQI
16AQI
23rd May 2025
17AQI
17AQI
24th May 2025
18AQI
18AQI
25th May 2025
18AQI
18AQI
26th May 2025
16AQI
16AQI
27th May 2025
17AQI
17AQI
28th May 2025
17AQI
17AQI
29th May 2025
17AQI
17AQI
30th May 2025
14AQI
14AQI
31st May 2025
17AQI
17AQI
1st June 2025
12AQI
12AQI
2nd June 2025
13AQI
13AQI
3rd June 2025
16AQI
16AQI
4th June 2025
16AQI
16AQI
5th June 2025
18AQI
18AQI
6th June 2025
19AQI
19AQI
7th June 2025
19AQI
19AQI
8th June 2025
20AQI
20AQI
9th June 2025
23AQI
23AQI
10th June 2025
32AQI
32AQI
11th June 2025
27AQI
27AQI
12th June 2025
29AQI
29AQI
13th June 2025
20AQI
20AQI
14th June 2025
17AQI
17AQI
15th June 2025
19AQI
19AQI
16th June 2025
22AQI
22AQI
17th June 2025
24AQI
24AQI
18th June 2025
16AQI
16AQI
19th June 2025
16AQI
16AQI
20th June 2025
17AQI
17AQI
21st June 2025
11AQI
11AQI
22nd June 2025
12AQI
12AQI
23rd June 2025
36AQI
36AQI
24th June 2025
50AQI
50AQI
25th June 2025
43AQI
43AQI
26th June 2025
16AQI
16AQI
27th June 2025
13AQI
13AQI
28th June 2025
12AQI
12AQI
29th June 2025
15AQI
15AQI
30th June 2025
17AQI
17AQI
1st July 2025
22AQI
22AQI
2nd July 2025
19AQI
19AQI
3rd July 2025
18AQI
18AQI
4th July 2025
19AQI
19AQI
5th July 2025
27AQI
27AQI
6th July 2025
18AQI
18AQI
7th July 2025
20AQI
20AQI
8th July 2025
21AQI
21AQI
9th July 2025
17AQI
17AQI
10th July 2025
15AQI
15AQI
11th July 2025
17AQI
17AQI
12th July 2025
19AQI
19AQI
13th July 2025
18AQI
18AQI
14th July 2025
18AQI
18AQI
15th July 2025
20AQI
20AQI
16th July 2025
24AQI
24AQI
17th July 2025
29AQI
29AQI
18th July 2025
26AQI
26AQI
19th July 2025
23AQI
23AQI
20th July 2025
21AQI
21AQI
21st July 2025
26AQI
26AQI
22nd July 2025
23AQI
23AQI
23rd July 2025
27AQI
27AQI
24th July 2025
29AQI
29AQI
25th July 2025
18AQI
18AQI
26th July 2025
17AQI
17AQI
27th July 2025
18AQI
18AQI
28th July 2025
18AQI
18AQI
29th July 2025
19AQI
19AQI
30th July 2025
21AQI
21AQI
31st July 2025
27AQI
27AQI
1st August 2025
34AQI
34AQI
2nd August 2025
40AQI
40AQI
3rd August 2025
44AQI
44AQI
4th August 2025
43AQI
43AQI
5th August 2025
39AQI
39AQI
6th August 2025
29AQI
29AQI
7th August 2025
16AQI
16AQI
8th August 2025
16AQI
16AQI
9th August 2025
17AQI
17AQI
10th August 2025
21AQI
21AQI
11th August 2025
23AQI
23AQI
12th August 2025
23AQI
23AQI
13th August 2025
36AQI
36AQI
14th August 2025
38AQI
38AQI
15th August 2025
30AQI
30AQI
16th August 2025
13AQI
13AQI
17th August 2025
14AQI
14AQI
18th August 2025
18AQI
18AQI
19th August 2025
21AQI
21AQI
20th August 2025
19AQI
19AQI
21st August 2025
19AQI
19AQI
22nd August 2025
28AQI
28AQI
23rd August 2025
34AQI
34AQI
24th August 2025
41AQI
41AQI
25th August 2025
42AQI
42AQI
26th August 2025
48AQI
48AQI
27th August 2025
53AQI
53AQI
28th August 2025
51AQI
51AQI
29th August 2025
50AQI
50AQI
30th August 2025
50AQI
50AQI
31st August 2025
54AQI
54AQI
1st September 2025
59AQI
59AQI
2nd September 2025
65AQI
65AQI
3rd September 2025
71AQI
71AQI
4th September 2025
75AQI
75AQI
5th September 2025
116AQI
116AQI
6th September 2025
138AQI
138AQI
7th September 2025
95AQI
95AQI
8th September 2025
61AQI
61AQI
9th September 2025
53AQI
53AQI
10th September 2025
60AQI
60AQI
11th September 2025
62AQI
62AQI
12th September 2025
59AQI
59AQI
13th September 2025
57AQI
57AQI
14th September 2025
51AQI
51AQI
15th September 2025
26AQI
26AQI
16th September 2025
32AQI
32AQI
17th September 2025
36AQI
36AQI
18th September 2025
38AQI
38AQI
19th September 2025
56AQI
56AQI
20th September 2025
56AQI
56AQI
21st September 2025
50AQI
50AQI
22nd September 2025
44AQI
44AQI
23rd September 2025
48AQI
48AQI
24th September 2025
50AQI
50AQI
25th September 2025
93AQI
93AQI
26th September 2025
44AQI
44AQI
27th September 2025
61AQI
61AQI
28th September 2025
65AQI
65AQI
29th September 2025
64AQI
64AQI
30th September 2025
1st October 2025
2nd October 2025
3rd October 2025
4th October 2025
5th October 2025
6th October 2025
7th October 2025
8th October 2025
9th October 2025
10th October 2025
11th October 2025
12th October 2025
13th October 2025
14th October 2025
15th October 2025
16th October 2025
17th October 2025
18th October 2025
19th October 2025
20th October 2025
21st October 2025
22nd October 2025
23rd October 2025
24th October 2025
25th October 2025
26th October 2025
27th October 2025
28th October 2025
29th October 2025
30th October 2025
31st October 2025
1st November 2025
2nd November 2025
3rd November 2025
4th November 2025
5th November 2025
6th November 2025
7th November 2025
8th November 2025
9th November 2025
10th November 2025
11th November 2025
12th November 2025
13th November 2025
14th November 2025
15th November 2025
16th November 2025
17th November 2025
18th November 2025
19th November 2025
20th November 2025
21st November 2025
22nd November 2025
23rd November 2025
24th November 2025
25th November 2025
26th November 2025
27th November 2025
28th November 2025
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
27AQI
23AQI
17AQI
19AQI
16AQI
21AQI
21AQI
32AQI
62AQI
No. of days
Jan.Feb.Mar.Apr.MayJun.Jul.Aug.Sep.Oct.Nov.Dec.Total Days
202526AQI
30
1
28
31
30
31
30
31
28
3
9
18
2
248
22
2
Highest AQI recorded in
September62AQI
Lowest AQI recorded in
May16AQI
202417AQI
31
29
31
30
31
29
30
1
29
2
28
2
31
28
2
31
358
7
Highest AQI recorded in
August29AQI
Lowest AQI recorded in
May6AQI
202321AQI
31
28
31
30
30
1
29
1
29
2
19
7
2
3
30
29
2
22
4
30
1
338
18
2
3
Highest AQI recorded in
August53AQI
Lowest AQI recorded in
April11AQI
202221AQI
29
1
21
31
25
31
30
21
1
16
5
1
1
15
13
26
4
31
277
23
1
1
Highest AQI recorded in
September50AQI
Lowest AQI recorded in
May9AQI
202118AQI
30
28
31
30
31
30
27
4
23
3
3
2
28
2
31
30
29
1
348
10
3
2
Highest AQI recorded in
August48AQI
Lowest AQI recorded in
May7AQI
202022AQI
13
20
19
29
31
31
19
2
2
3
4
31
30
31
254
2
2
3
4
Highest AQI recorded in
September76AQI
Lowest AQI recorded in
June7AQI
Most & Least Polluted Years Over the Last 6 Years
Most Polluted Year Recorded
2025(Avg.)
26AQILeast Polluted Year Recorded
2024(Avg.)
17AQIQuincy's annual 2025 AQI (26) shows an average percentage change of 34.06% (worsened AQI) compared to previous years: 2020 (22), 2021 (18), 2022 (21), 2023 (21), 2024 (17).
