Colusa, California, 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+
October Air Quality Analysis
Colusa, California, United States
2021
2022
2023
2024
2025
AQI
.
Days
AQI Trends: Highest and Lowest
Highest AQI recorded on
15th Oct 2023
499AQILowest AQI recorded on
1st Oct 2025
17AQISame Day Analysis (27th October ):
On this day, AQI across the 5 years varied significantly: 2025 ranks the most lowest AQI at 17 of Good air quality, showing improvement over 2024, 2023, 2022 and 2021 on the same day.
Download 2024 Annual Data
World Air Quality Report
Day & Night AQI Trend: 27th Oct - 28th Oct 2025
Colusa, California, United States
AQI
Day
Night
.
7 AM27th Oct 2025
6 PM
6 AM28th Oct 2025
Day time
Avg. Highest Time
1PM27th Oct
26AQI
Avg. Lowest Time
4PM27th Oct
14AQI
Night time
Avg. Highest Time
11PM27th Oct
32AQI
Avg. Lowest Time
7PM27th Oct
14AQI
In the last 24 hours,
Colusa's AQI reached its highest point of 32 at 11 PM during the Night, while the lowest point, undefined, was recorded at 6 AM during the Night between 27th Oct and 28th Oct 2025.
Day & Night AQI Trend : Sep - Oct 2025
Colusa, California, United States
SepOct
28th - 29th29th - 30th30th - 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
28th Sep 2025487 AMAQI
28th Sep 2025508 AMAQI
28th Sep 2025469 AMAQI
28th Sep 20254010 AMAQI
28th Sep 20255011 AMAQI
28th Sep 20254412 PMAQI
28th Sep 2025411 PMAQI
28th Sep 2025412 PMAQI
28th Sep 2025303 PMAQI
28th Sep 2025304 PMAQI
28th Sep 2025405 PMAQI
28th Sep 2025366 PMAQI
28th Sep 2025357 PMAQI
28th Sep 2025388 PMAQI
28th Sep 2025339 PMAQI
28th Sep 20252510 PMAQI
28th Sep 20253411 PMAQI
29th Sep 20253612 AMAQI
29th Sep 2025311 AMAQI
29th Sep 2025252 AMAQI
29th Sep 2025253 AMAQI
29th Sep 2025204 AMAQI
29th Sep 2025155 AMAQI
29th Sep 2025166 AMAQI
20°C15/26°C
29th Sep 2025167 AMAQI
29th Sep 2025198 AMAQI
29th Sep 2025269 AMAQI
29th Sep 20252210 AMAQI
29th Sep 20251711 AMAQI
29th Sep 20252212 PMAQI
29th Sep 2025201 PMAQI
29th Sep 2025162 PMAQI
29th Sep 2025183 PMAQI
29th Sep 2025254 PMAQI
29th Sep 2025295 PMAQI
29th Sep 2025326 PMAQI
29th Sep 2025267 PMAQI
29th Sep 2025338 PMAQI
29th Sep 2025389 PMAQI
29th Sep 20252810 PMAQI
29th Sep 20253511 PMAQI
30th Sep 20253812 AMAQI
30th Sep 2025401 AMAQI
30th Sep 2025282 AMAQI
30th Sep 2025253 AMAQI
30th Sep 2025284 AMAQI
30th Sep 2025355 AMAQI
30th Sep 2025286 AMAQI
21°C17/25°C
30th Sep 2025237 AMAQI
30th Sep 2025138 AMAQI
30th Sep 2025159 AMAQI
30th Sep 20252210 AMAQI
30th Sep 20251711 AMAQI
30th Sep 20251312 PMAQI
30th Sep 2025171 PMAQI
30th Sep 2025192 PMAQI
30th Sep 2025403 PMAQI
30th Sep 2025234 PMAQI
30th Sep 2025205 PMAQI
30th Sep 2025206 PMAQI
30th Sep 2025167 PMAQI
30th Sep 2025158 PMAQI
30th Sep 2025149 PMAQI
30th Sep 20251510 PMAQI
30th Sep 20252011 PMAQI
1st Oct 20252112 AMAQI
1st Oct 2025201 AMAQI
1st Oct 2025212 AMAQI
1st Oct 2025223 AMAQI
1st Oct 2025164 AMAQI
1st Oct 2025175 AMAQI
1st Oct 2025206 AMAQI
19°C16/25°C
1st Oct 2025177 AMAQI
1st Oct 2025118 AMAQI
1st Oct 202579 AMAQI
1st Oct 2025510 AMAQI
1st Oct 2025611 AMAQI
1st Oct 20252012 PMAQI
1st Oct 2025311 PMAQI
1st Oct 2025352 PMAQI
1st Oct 202583 PMAQI
1st Oct 2025114 PMAQI
1st Oct 202595 PMAQI
1st Oct 2025126 PMAQI
1st Oct 2025147 PMAQI
1st Oct 2025208 PMAQI
1st Oct 2025199 PMAQI
1st Oct 20252010 PMAQI
1st Oct 20251911 PMAQI
2nd Oct 20252012 AMAQI
2nd Oct 2025501 AMAQI
2nd Oct 2025522 AMAQI
2nd Oct 2025363 AMAQI
2nd Oct 2025414 AMAQI
2nd Oct 2025365 AMAQI
2nd Oct 2025426 AMAQI
19°C15/23°C
2nd Oct 2025367 AMAQI
2nd Oct 2025378 AMAQI
2nd Oct 2025399 AMAQI
2nd Oct 20256510 AMAQI
2nd Oct 20255411 AMAQI
2nd Oct 20254612 PMAQI
2nd Oct 2025361 PMAQI
2nd Oct 2025122 PMAQI
2nd Oct 2025413 PMAQI
2nd Oct 2025344 PMAQI
2nd Oct 2025215 PMAQI
2nd Oct 2025426 PMAQI
2nd Oct 2025447 PMAQI
2nd Oct 2025538 PMAQI
2nd Oct 2025339 PMAQI
2nd Oct 20254210 PMAQI
2nd Oct 20252811 PMAQI
3rd Oct 20254112 AMAQI
3rd Oct 2025391 AMAQI
3rd Oct 2025412 AMAQI
3rd Oct 2025393 AMAQI
3rd Oct 2025384 AMAQI
3rd Oct 2025465 AMAQI
3rd Oct 2025206 AMAQI
19°C14/26°C
3rd Oct 2025247 AMAQI
3rd Oct 2025348 AMAQI
3rd Oct 2025529 AMAQI
3rd Oct 20254110 AMAQI
3rd Oct 20255011 AMAQI
3rd Oct 20251212 PMAQI
3rd Oct 2025131 PMAQI
3rd Oct 202562 PMAQI
3rd Oct 202573 PMAQI
3rd Oct 2025144 PMAQI
3rd Oct 202575 PMAQI
3rd Oct 202586 PMAQI
3rd Oct 2025307 PMAQI
3rd Oct 202588 PMAQI
3rd Oct 2025119 PMAQI
3rd Oct 20253010 PMAQI
3rd Oct 20254411 PMAQI
4th Oct 20254712 AMAQI
4th Oct 2025601 AMAQI
4th Oct 20251082 AMAQI
4th Oct 2025703 AMAQI
4th Oct 2025464 AMAQI
4th Oct 2025425 AMAQI
4th Oct 2025346 AMAQI
17°C15/22°C
4th Oct 2025107 AMAQI
4th Oct 202568 AMAQI
4th Oct 202579 AMAQI
4th Oct 20252310 AMAQI
4th Oct 20254611 AMAQI
4th Oct 20253812 PMAQI
4th Oct 2025201 PMAQI
4th Oct 2025232 PMAQI
4th Oct 2025243 PMAQI
4th Oct 2025114 PMAQI
4th Oct 2025115 PMAQI
4th Oct 202566 PMAQI
4th Oct 2025167 PMAQI
4th Oct 2025288 PMAQI
4th Oct 2025159 PMAQI
4th Oct 20253410 PMAQI
4th Oct 20256111 PMAQI
5th Oct 20254812 AMAQI
5th Oct 2025461 AMAQI
5th Oct 2025442 AMAQI
5th Oct 2025523 AMAQI
5th Oct 2025344 AMAQI
5th Oct 2025415 AMAQI
5th Oct 2025406 AMAQI
18°C11/28°C
5th Oct 2025237 AMAQI
5th Oct 202598 AMAQI
5th Oct 2025149 AMAQI
5th Oct 20253810 AMAQI
5th Oct 20254211 AMAQI
5th Oct 20254312 PMAQI
5th Oct 2025341 PMAQI
5th Oct 2025112 PMAQI
5th Oct 2025113 PMAQI
5th Oct 2025134 PMAQI
5th Oct 2025125 PMAQI
5th Oct 2025126 PMAQI
5th Oct 2025607 PMAQI
5th Oct 2025128 PMAQI
5th Oct 2025179 PMAQI
5th Oct 20251810 PMAQI
5th Oct 20253011 PMAQI
6th Oct 20252712 AMAQI
6th Oct 2025311 AMAQI
6th Oct 2025262 AMAQI
6th Oct 2025163 AMAQI
6th Oct 2025134 AMAQI
6th Oct 2025105 AMAQI
6th Oct 202576 AMAQI
19°C11/29°C
6th Oct 2025297 AMAQI
6th Oct 202588 AMAQI
6th Oct 2025449 AMAQI
6th Oct 20254710 AMAQI
7th Oct 2025394 AMAQI
7th Oct 2025115 AMAQI
7th Oct 2025336 AMAQI
21°C12/32°C
7th Oct 2025397 AMAQI
7th Oct 2025418 AMAQI
7th Oct 2025159 AMAQI
7th Oct 20252310 AMAQI
7th Oct 20254011 AMAQI
7th Oct 20253112 PMAQI
7th Oct 2025261 PMAQI
7th Oct 2025392 PMAQI
7th Oct 2025413 PMAQI
7th Oct 2025414 PMAQI
7th Oct 2025485 PMAQI
7th Oct 2025566 PMAQI
7th Oct 2025637 PMAQI
7th Oct 2025508 PMAQI
7th Oct 2025629 PMAQI
7th Oct 20256810 PMAQI
7th Oct 20257811 PMAQI
8th Oct 20258412 AMAQI
8th Oct 2025891 AMAQI
8th Oct 2025792 AMAQI
8th Oct 2025743 AMAQI
8th Oct 2025744 AMAQI
8th Oct 2025755 AMAQI
8th Oct 2025856 AMAQI
21°C11/32°C
8th Oct 2025667 AMAQI
8th Oct 2025768 AMAQI
8th Oct 2025649 AMAQI
8th Oct 20256110 AMAQI
8th Oct 20256311 AMAQI
8th Oct 20255612 PMAQI
8th Oct 2025541 PMAQI
8th Oct 2025442 PMAQI
8th Oct 2025523 PMAQI
8th Oct 2025544 PMAQI
8th Oct 2025555 PMAQI
8th Oct 20251346 PMAQI
8th Oct 2025537 PMAQI
8th Oct 2025518 PMAQI
8th Oct 2025549 PMAQI
8th Oct 20255210 PMAQI
8th Oct 20255011 PMAQI
9th Oct 20254412 AMAQI
9th Oct 2025371 AMAQI
9th Oct 2025452 AMAQI
9th Oct 2025523 AMAQI
9th Oct 2025444 AMAQI
9th Oct 2025515 AMAQI
9th Oct 2025476 AMAQI
19°C11/29°C
9th Oct 2025387 AMAQI
9th Oct 2025508 AMAQI
9th Oct 2025529 AMAQI
9th Oct 20255410 AMAQI
9th Oct 20254011 AMAQI
9th Oct 20255112 PMAQI
9th Oct 2025411 PMAQI
9th Oct 2025492 PMAQI
9th Oct 2025513 PMAQI
9th Oct 2025454 PMAQI
9th Oct 2025505 PMAQI
9th Oct 2025546 PMAQI
9th Oct 2025727 PMAQI
9th Oct 2025668 PMAQI
9th Oct 2025439 PMAQI
9th Oct 20254510 PMAQI
9th Oct 20254011 PMAQI
10th Oct 20254312 AMAQI
10th Oct 2025481 AMAQI
10th Oct 2025452 AMAQI
10th Oct 2025453 AMAQI
10th Oct 2025244 AMAQI
10th Oct 2025385 AMAQI
10th Oct 2025386 AMAQI
18°C13/23°C
10th Oct 2025287 AMAQI
10th Oct 2025428 AMAQI
10th Oct 2025479 AMAQI
10th Oct 20254810 AMAQI
10th Oct 20253311 AMAQI
10th Oct 20254212 PMAQI
10th Oct 2025441 PMAQI
10th Oct 2025482 PMAQI
10th Oct 2025493 PMAQI
10th Oct 2025494 PMAQI
10th Oct 20251075 PMAQI
10th Oct 2025986 PMAQI
10th Oct 2025427 PMAQI
10th Oct 2025578 PMAQI
10th Oct 2025269 PMAQI
10th Oct 20252010 PMAQI
10th Oct 20251311 PMAQI
11th Oct 2025912 AMAQI
11th Oct 202591 AMAQI
11th Oct 202562 AMAQI
11th Oct 202583 AMAQI
11th Oct 202574 AMAQI
11th Oct 202575 AMAQI
11th Oct 202566 AMAQI
18°C12/24°C
11th Oct 202567 AMAQI
11th Oct 202558 AMAQI
11th Oct 2025319 AMAQI
11th Oct 20255110 AMAQI
11th Oct 20254511 AMAQI
11th Oct 20255712 PMAQI
11th Oct 2025391 PMAQI
11th Oct 2025232 PMAQI
11th Oct 2025153 PMAQI
11th Oct 2025204 PMAQI
11th Oct 2025245 PMAQI
11th Oct 2025246 PMAQI
11th Oct 2025707 PMAQI
11th Oct 2025608 PMAQI
11th Oct 2025509 PMAQI
11th Oct 20254710 PMAQI
11th Oct 20257211 PMAQI
12th Oct 20258212 AMAQI
12th Oct 2025761 AMAQI
12th Oct 2025642 AMAQI
12th Oct 2025663 AMAQI
12th Oct 2025654 AMAQI
12th Oct 2025385 AMAQI
12th Oct 2025426 AMAQI
16°C8/23°C
12th Oct 2025357 AMAQI
12th Oct 2025248 AMAQI
12th Oct 202589 AMAQI
12th Oct 20251510 AMAQI
12th Oct 20251911 AMAQI
12th Oct 20252212 PMAQI
12th Oct 2025231 PMAQI
12th Oct 2025262 PMAQI
12th Oct 2025273 PMAQI
12th Oct 2025284 PMAQI
12th Oct 2025215 PMAQI
12th Oct 2025656 PMAQI
12th Oct 2025517 PMAQI
12th Oct 2025308 PMAQI
12th Oct 2025339 PMAQI
12th Oct 20255610 PMAQI
12th Oct 20255411 PMAQI
13th Oct 20255812 AMAQI
13th Oct 2025571 AMAQI
13th Oct 2025562 AMAQI
13th Oct 2025543 AMAQI
13th Oct 2025574 AMAQI
13th Oct 2025525 AMAQI
13th Oct 2025186 AMAQI
16°C7/26°C
13th Oct 2025157 AMAQI
13th Oct 2025198 AMAQI
13th Oct 2025279 AMAQI
13th Oct 20253510 AMAQI
13th Oct 20254411 AMAQI
13th Oct 20254812 PMAQI
13th Oct 2025381 PMAQI
13th Oct 2025432 PMAQI
13th Oct 2025443 PMAQI
13th Oct 2025384 PMAQI
13th Oct 2025665 PMAQI
13th Oct 2025546 PMAQI
13th Oct 2025487 PMAQI
13th Oct 2025418 PMAQI
13th Oct 2025659 PMAQI
13th Oct 20254410 PMAQI
13th Oct 20254111 PMAQI
14th Oct 20254912 AMAQI
14th Oct 2025551 AMAQI
14th Oct 2025762 AMAQI
14th Oct 2025763 AMAQI
14th Oct 2025674 AMAQI
14th Oct 2025615 AMAQI
14th Oct 202566 AMAQI
13°C9/19°C
14th Oct 2025387 AMAQI
14th Oct 202568 AMAQI
14th Oct 202579 AMAQI
14th Oct 20251710 AMAQI
14th Oct 20253611 AMAQI
14th Oct 20252612 PMAQI
14th Oct 2025441 PMAQI
14th Oct 2025462 PMAQI
14th Oct 2025343 PMAQI
14th Oct 2025384 PMAQI
14th Oct 2025165 PMAQI
14th Oct 2025266 PMAQI
14th Oct 2025267 PMAQI
14th Oct 2025288 PMAQI
14th Oct 2025289 PMAQI
14th Oct 20252810 PMAQI
14th Oct 20252611 PMAQI
15th Oct 20252912 AMAQI
15th Oct 2025291 AMAQI
15th Oct 2025182 AMAQI
15th Oct 202583 AMAQI
15th Oct 202594 AMAQI
15th Oct 202585 AMAQI
15th Oct 202566 AMAQI
12°C10/16°C
15th Oct 2025157 AMAQI
15th Oct 2025158 AMAQI
15th Oct 2025119 AMAQI
15th Oct 2025710 AMAQI
15th Oct 20253411 AMAQI
15th Oct 20253912 PMAQI
15th Oct 202581 PMAQI
15th Oct 202582 PMAQI
15th Oct 2025103 PMAQI
15th Oct 202594 PMAQI
15th Oct 2025185 PMAQI
15th Oct 2025256 PMAQI
15th Oct 2025157 PMAQI
15th Oct 202568 PMAQI
15th Oct 202579 PMAQI
15th Oct 20252310 PMAQI
15th Oct 20252011 PMAQI
16th Oct 20251612 AMAQI
16th Oct 202561 AMAQI
16th Oct 2025362 AMAQI
16th Oct 2025373 AMAQI
16th Oct 2025204 AMAQI
16th Oct 2025465 AMAQI
16th Oct 2025496 AMAQI
13°C11/18°C
16th Oct 2025317 AMAQI
16th Oct 2025418 AMAQI
16th Oct 2025389 AMAQI
16th Oct 20251810 AMAQI
16th Oct 20251711 AMAQI
16th Oct 20252912 PMAQI
16th Oct 2025361 PMAQI
16th Oct 2025162 PMAQI
16th Oct 202593 PMAQI
16th Oct 2025404 PMAQI
16th Oct 2025415 PMAQI
16th Oct 2025276 PMAQI
16th Oct 2025417 PMAQI
16th Oct 2025418 PMAQI
16th Oct 2025489 PMAQI
16th Oct 20254810 PMAQI
16th Oct 20254411 PMAQI
17th Oct 20254812 AMAQI
17th Oct 2025471 AMAQI
17th Oct 2025462 AMAQI
17th Oct 2025453 AMAQI
17th Oct 2025514 AMAQI
17th Oct 2025555 AMAQI
17th Oct 2025146 AMAQI
14°C6/23°C
17th Oct 2025147 AMAQI
17th Oct 2025468 AMAQI
17th Oct 2025409 AMAQI
17th Oct 20253710 AMAQI
17th Oct 20254511 AMAQI
17th Oct 20254212 PMAQI
17th Oct 2025401 PMAQI
17th Oct 2025522 PMAQI
17th Oct 2025583 PMAQI
17th Oct 2025464 PMAQI
17th Oct 2025465 PMAQI
17th Oct 2025416 PMAQI
17th Oct 2025517 PMAQI
17th Oct 2025428 PMAQI
17th Oct 2025509 PMAQI
17th Oct 20255610 PMAQI
17th Oct 20255311 PMAQI
18th Oct 20255412 AMAQI
18th Oct 2025541 AMAQI
18th Oct 2025552 AMAQI
18th Oct 2025563 AMAQI
18th Oct 2025504 AMAQI
18th Oct 2025565 AMAQI
18th Oct 2025496 AMAQI
14°C7/23°C
18th Oct 2025397 AMAQI
18th Oct 2025408 AMAQI
18th Oct 2025409 AMAQI
18th Oct 20255510 AMAQI
18th Oct 20255211 AMAQI
18th Oct 20255012 PMAQI
18th Oct 2025491 PMAQI
18th Oct 2025512 PMAQI
18th Oct 2025463 PMAQI
18th Oct 2025384 PMAQI
18th Oct 2025405 PMAQI
18th Oct 2025416 PMAQI
18th Oct 2025467 PMAQI
18th Oct 2025458 PMAQI
18th Oct 2025439 PMAQI
18th Oct 20255010 PMAQI
18th Oct 20255411 PMAQI
19th Oct 20255312 AMAQI
19th Oct 2025541 AMAQI
19th Oct 2025522 AMAQI
19th Oct 2025463 AMAQI
19th Oct 2025574 AMAQI
19th Oct 2025495 AMAQI
19th Oct 2025526 AMAQI
16°C9/26°C
19th Oct 2025507 AMAQI
19th Oct 2025498 AMAQI
19th Oct 2025539 AMAQI
19th Oct 20255710 AMAQI
19th Oct 20255811 AMAQI
19th Oct 20255612 PMAQI
19th Oct 2025571 PMAQI
19th Oct 2025572 PMAQI
19th Oct 2025583 PMAQI
19th Oct 2025414 PMAQI
19th Oct 2025565 PMAQI
19th Oct 2025556 PMAQI
19th Oct 2025547 PMAQI
19th Oct 2025548 PMAQI
19th Oct 2025549 PMAQI
19th Oct 20255410 PMAQI
19th Oct 20255411 PMAQI
20th Oct 20255412 AMAQI
20th Oct 2025561 AMAQI
20th Oct 2025532 AMAQI
20th Oct 2025533 AMAQI
20th Oct 2025544 AMAQI
20th Oct 2025555 AMAQI
20th Oct 2025416 AMAQI
17°C9/26°C
20th Oct 2025167 AMAQI
20th Oct 2025108 AMAQI
20th Oct 2025149 AMAQI
20th Oct 20251410 AMAQI
20th Oct 20251511 AMAQI
20th Oct 20251512 PMAQI
20th Oct 2025161 PMAQI
20th Oct 2025182 PMAQI
20th Oct 2025313 PMAQI
20th Oct 2025184 PMAQI
20th Oct 2025205 PMAQI
20th Oct 2025236 PMAQI
20th Oct 2025267 PMAQI
20th Oct 2025218 PMAQI
20th Oct 2025249 PMAQI
20th Oct 20252510 PMAQI
20th Oct 20254211 PMAQI
21st Oct 20255712 AMAQI
21st Oct 2025571 AMAQI
21st Oct 2025552 AMAQI
21st Oct 2025463 AMAQI
21st Oct 2025404 AMAQI
21st Oct 2025555 AMAQI
21st Oct 2025376 AMAQI
19°C13/29°C
21st Oct 2025257 AMAQI
21st Oct 2025328 AMAQI
21st Oct 2025279 AMAQI
21st Oct 20251710 AMAQI
21st Oct 20252011 AMAQI
21st Oct 20252312 PMAQI
21st Oct 2025301 PMAQI
21st Oct 2025322 PMAQI
21st Oct 2025373 PMAQI
21st Oct 2025604 PMAQI
21st Oct 2025465 PMAQI
21st Oct 2025216 PMAQI
21st Oct 2025307 PMAQI
21st Oct 2025408 PMAQI
21st Oct 2025949 PMAQI
21st Oct 202515110 PMAQI
21st Oct 202515611 PMAQI
22nd Oct 202513312 AMAQI
22nd Oct 2025791 AMAQI
22nd Oct 2025682 AMAQI
22nd Oct 2025723 AMAQI
22nd Oct 2025704 AMAQI
22nd Oct 2025685 AMAQI
22nd Oct 2025746 AMAQI
17°C8/28°C
22nd Oct 2025627 AMAQI
22nd Oct 2025568 AMAQI
22nd Oct 2025569 AMAQI
22nd Oct 20255510 AMAQI
22nd Oct 20255511 AMAQI
22nd Oct 20254812 PMAQI
22nd Oct 2025411 PMAQI
22nd Oct 2025492 PMAQI
22nd Oct 2025543 PMAQI
22nd Oct 2025524 PMAQI
22nd Oct 2025485 PMAQI
22nd Oct 2025496 PMAQI
22nd Oct 2025507 PMAQI
22nd Oct 2025388 PMAQI
22nd Oct 2025449 PMAQI
22nd Oct 20254910 PMAQI
22nd Oct 20254411 PMAQI
23rd Oct 20254212 AMAQI
23rd Oct 2025391 AMAQI
23rd Oct 2025392 AMAQI
23rd Oct 2025343 AMAQI
23rd Oct 2025364 AMAQI
23rd Oct 2025425 AMAQI
23rd Oct 2025426 AMAQI
17°C11/25°C
23rd Oct 2025407 AMAQI
23rd Oct 2025298 AMAQI
23rd Oct 2025229 AMAQI
23rd Oct 20252210 AMAQI
23rd Oct 20252211 AMAQI
23rd Oct 20252412 PMAQI
23rd Oct 2025351 PMAQI
23rd Oct 2025522 PMAQI
23rd Oct 2025583 PMAQI
23rd Oct 2025594 PMAQI
23rd Oct 2025615 PMAQI
23rd Oct 2025596 PMAQI
23rd Oct 2025567 PMAQI
23rd Oct 2025558 PMAQI
23rd Oct 2025569 PMAQI
23rd Oct 20256210 PMAQI
23rd Oct 20256211 PMAQI
24th Oct 20255612 AMAQI
24th Oct 2025551 AMAQI
24th Oct 2025552 AMAQI
24th Oct 2025543 AMAQI
24th Oct 2025544 AMAQI
24th Oct 2025595 AMAQI
24th Oct 2025606 AMAQI
15°C9/24°C
24th Oct 2025577 AMAQI
24th Oct 2025558 AMAQI
24th Oct 2025559 AMAQI
24th Oct 20255610 AMAQI
24th Oct 20255611 AMAQI
24th Oct 20255512 PMAQI
24th Oct 2025551 PMAQI
24th Oct 2025572 PMAQI
24th Oct 2025583 PMAQI
24th Oct 2025544 PMAQI
24th Oct 2025505 PMAQI
24th Oct 2025546 PMAQI
24th Oct 2025577 PMAQI
24th Oct 2025568 PMAQI
24th Oct 2025519 PMAQI
24th Oct 20254210 PMAQI
24th Oct 20253711 PMAQI
25th Oct 20254212 AMAQI
25th Oct 2025471 AMAQI
25th Oct 2025362 AMAQI
25th Oct 2025223 AMAQI
25th Oct 2025204 AMAQI
25th Oct 2025225 AMAQI
25th Oct 2025226 AMAQI
14°C8/22°C
25th Oct 2025257 AMAQI
25th Oct 2025248 AMAQI
25th Oct 2025169 AMAQI
25th Oct 20251310 AMAQI
25th Oct 20251111 AMAQI
25th Oct 20252512 PMAQI
25th Oct 2025391 PMAQI
25th Oct 2025342 PMAQI
25th Oct 2025343 PMAQI
25th Oct 2025394 PMAQI
25th Oct 2025345 PMAQI
25th Oct 2025246 PMAQI
25th Oct 2025207 PMAQI
25th Oct 2025218 PMAQI
25th Oct 2025209 PMAQI
25th Oct 20251510 PMAQI
25th Oct 20251411 PMAQI
26th Oct 20252312 AMAQI
26th Oct 2025251 AMAQI
26th Oct 2025282 AMAQI
26th Oct 2025383 AMAQI
26th Oct 2025384 AMAQI
26th Oct 2025305 AMAQI
26th Oct 2025226 AMAQI
16°C13/22°C
26th Oct 2025207 AMAQI
26th Oct 2025258 AMAQI
26th Oct 2025309 AMAQI
26th Oct 20253010 AMAQI
26th Oct 20252011 AMAQI
26th Oct 20251112 PMAQI
26th Oct 2025201 PMAQI
26th Oct 2025282 PMAQI
26th Oct 2025323 PMAQI
26th Oct 2025404 PMAQI
26th Oct 2025505 PMAQI
26th Oct 2025516 PMAQI
26th Oct 2025367 PMAQI
26th Oct 2025228 PMAQI
26th Oct 2025179 PMAQI
26th Oct 20251410 PMAQI
26th Oct 20251511 PMAQI
27th Oct 20252512 AMAQI
27th Oct 2025211 AMAQI
27th Oct 2025172 AMAQI
27th Oct 2025143 AMAQI
27th Oct 2025114 AMAQI
27th Oct 2025115 AMAQI
27th Oct 2025116 AMAQI
14°C12/18°C
27th Oct 2025147 AMAQI
27th Oct 2025208 AMAQI
27th Oct 2025209 AMAQI
27th Oct 20251410 AMAQI
27th Oct 20251711 AMAQI
27th Oct 20252412 PMAQI
27th Oct 2025261 PMAQI
27th Oct 2025222 PMAQI
27th Oct 2025143 PMAQI
27th Oct 2025144 PMAQI
27th Oct 2025165 PMAQI
27th Oct 2025176 PMAQI
27th Oct 2025147 PMAQI
27th Oct 2025228 PMAQI
27th Oct 2025299 PMAQI
27th Oct 20252810 PMAQI
27th Oct 20253211 PMAQI
28th Oct 20252512 AMAQI
28th Oct 2025161 AMAQI
28th Oct 2025152 AMAQI
28th Oct 2025193 AMAQI
15°C10/22°C
7 AM
12 PM
6 PM
12 AM
6 AM
--°C/°C
Day time
Avg. Highest Time
6 PM
40AQI
1 hours / Day
30 hours / Month
Avg. Lowest Time
7 AM - 8 AM
30AQI
2 hours / Day
60 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 6 PM to 6 PM (Avg. 40), while the lowest AQI was between 7 AM to 8 AM (Avg. 30).
Night time
Avg. Highest Time
12 AM - 2 AM
44AQI
3 hours / Day
90 hours / Month
Avg. Lowest Time
6 AM
34AQI
1 hours / Day
30 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 12 AM to 2 AM (Avg. 44), while the lowest AQI was between 6 AM to 6 AM (Avg. 34).
2025 Days Vs Air Quality
Colusa, California, United States
2025
92%
277
8%
23
Total number of days with different AQI categories in last 301 days in 2025 (64 days remaining)
Good
277 DaysModerate
23 DaysPoor
0 DaysUnhealthy
0 DaysSevere
0 DaysHazardous
0 DaysUnder WHO’s Safe Air Quality Limits: 92%
Health Risk Level:
Very Low
In 2025, 92% of 301 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
Colusa, California, 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
52AQI
52AQI
2nd January 2025
29AQI
29AQI
3rd January 2025
41AQI
41AQI
4th January 2025
22AQI
22AQI
5th January 2025
26AQI
26AQI
6th January 2025
25AQI
25AQI
7th January 2025
24AQI
24AQI
8th January 2025
24AQI
24AQI
9th January 2025
28AQI
28AQI
10th January 2025
46AQI
46AQI
11th January 2025
33AQI
33AQI
12th January 2025
25AQI
25AQI
13th January 2025
27AQI
27AQI
14th January 2025
26AQI
26AQI
15th January 2025
47AQI
47AQI
16th January 2025
49AQI
49AQI
17th January 2025
53AQI
53AQI
18th January 2025
50AQI
50AQI
19th January 2025
51AQI
51AQI
20th January 2025
35AQI
35AQI
21st January 2025
36AQI
36AQI
22nd January 2025
37AQI
37AQI
23rd January 2025
51AQI
51AQI
24th January 2025
51AQI
51AQI
25th January 2025
37AQI
37AQI
26th January 2025
31AQI
31AQI
27th January 2025
24AQI
24AQI
28th January 2025
48AQI
48AQI
29th January 2025
60AQI
60AQI
30th January 2025
79AQI
79AQI
31st January 2025
41AQI
41AQI
1st February 2025
37AQI
37AQI
2nd February 2025
24AQI
24AQI
3rd February 2025
24AQI
24AQI
4th February 2025
23AQI
23AQI
5th February 2025
26AQI
26AQI
6th February 2025
23AQI
23AQI
7th February 2025
24AQI
24AQI
8th February 2025
23AQI
23AQI
9th February 2025
26AQI
26AQI
10th February 2025
27AQI
27AQI
11th February 2025
27AQI
27AQI
12th February 2025
33AQI
33AQI
13th February 2025
66AQI
66AQI
14th February 2025
37AQI
37AQI
15th February 2025
29AQI
29AQI
16th February 2025
27AQI
27AQI
17th February 2025
21AQI
21AQI
18th February 2025
23AQI
23AQI
19th February 2025
22AQI
22AQI
20th February 2025
24AQI
24AQI
21st February 2025
24AQI
24AQI
22nd February 2025
29AQI
29AQI
23rd February 2025
26AQI
26AQI
24th February 2025
23AQI
23AQI
25th February 2025
23AQI
23AQI
26th February 2025
24AQI
24AQI
27th February 2025
29AQI
29AQI
28th February 2025
27AQI
27AQI
1st March 2025
33AQI
33AQI
2nd March 2025
26AQI
26AQI
3rd March 2025
21AQI
21AQI
4th March 2025
21AQI
21AQI
5th March 2025
22AQI
22AQI
6th March 2025
24AQI
24AQI
7th March 2025
26AQI
26AQI
8th March 2025
25AQI
25AQI
9th March 2025
34AQI
34AQI
10th March 2025
30AQI
30AQI
11th March 2025
33AQI
33AQI
12th March 2025
29AQI
29AQI
13th March 2025
19AQI
19AQI
14th March 2025
16AQI
16AQI
15th March 2025
29AQI
29AQI
16th March 2025
34AQI
34AQI
17th March 2025
15AQI
15AQI
18th March 2025
16AQI
16AQI
19th March 2025
18AQI
18AQI
20th March 2025
15AQI
15AQI
21st March 2025
16AQI
16AQI
22nd March 2025
19AQI
19AQI
23rd March 2025
17AQI
17AQI
24th March 2025
19AQI
19AQI
25th March 2025
23AQI
23AQI
26th March 2025
27AQI
27AQI
27th March 2025
18AQI
18AQI
28th March 2025
19AQI
19AQI
29th March 2025
22AQI
22AQI
30th March 2025
20AQI
20AQI
31st March 2025
19AQI
19AQI
1st April 2025
18AQI
18AQI
2nd April 2025
17AQI
17AQI
3rd April 2025
17AQI
17AQI
4th April 2025
18AQI
18AQI
5th April 2025
18AQI
18AQI
6th April 2025
22AQI
22AQI
7th April 2025
14AQI
14AQI
8th April 2025
13AQI
13AQI
9th April 2025
23AQI
23AQI
10th April 2025
22AQI
22AQI
11th April 2025
22AQI
22AQI
12th April 2025
22AQI
22AQI
13th April 2025
23AQI
23AQI
14th April 2025
21AQI
21AQI
15th April 2025
34AQI
34AQI
16th April 2025
31AQI
31AQI
17th April 2025
19AQI
19AQI
18th April 2025
26AQI
26AQI
19th April 2025
26AQI
26AQI
20th April 2025
25AQI
25AQI
21st April 2025
29AQI
29AQI
22nd April 2025
35AQI
35AQI
23rd April 2025
40AQI
40AQI
24th April 2025
42AQI
42AQI
25th April 2025
23AQI
23AQI
26th April 2025
19AQI
19AQI
27th April 2025
15AQI
15AQI
28th April 2025
16AQI
16AQI
29th April 2025
25AQI
25AQI
30th April 2025
32AQI
32AQI
1st May 2025
32AQI
32AQI
2nd May 2025
32AQI
32AQI
3rd May 2025
22AQI
22AQI
4th May 2025
29AQI
29AQI
5th May 2025
25AQI
25AQI
6th May 2025
26AQI
26AQI
7th May 2025
47AQI
47AQI
8th May 2025
42AQI
42AQI
9th May 2025
43AQI
43AQI
10th May 2025
37AQI
37AQI
11th May 2025
24AQI
24AQI
12th May 2025
19AQI
19AQI
13th May 2025
15AQI
15AQI
14th May 2025
16AQI
16AQI
15th May 2025
21AQI
21AQI
16th May 2025
29AQI
29AQI
17th May 2025
24AQI
24AQI
18th May 2025
19AQI
19AQI
19th May 2025
17AQI
17AQI
20th May 2025
16AQI
16AQI
21st May 2025
24AQI
24AQI
22nd May 2025
27AQI
27AQI
23rd May 2025
18AQI
18AQI
24th May 2025
30AQI
30AQI
25th May 2025
25AQI
25AQI
26th May 2025
17AQI
17AQI
27th May 2025
23AQI
23AQI
28th May 2025
28AQI
28AQI
29th May 2025
25AQI
25AQI
30th May 2025
28AQI
28AQI
31st May 2025
38AQI
38AQI
1st June 2025
40AQI
40AQI
2nd June 2025
54AQI
54AQI
3rd June 2025
39AQI
39AQI
4th June 2025
37AQI
37AQI
5th June 2025
43AQI
43AQI
6th June 2025
24AQI
24AQI
7th June 2025
25AQI
25AQI
8th June 2025
22AQI
22AQI
9th June 2025
25AQI
25AQI
10th June 2025
28AQI
28AQI
11th June 2025
43AQI
43AQI
12th June 2025
47AQI
47AQI
13th June 2025
45AQI
45AQI
14th June 2025
39AQI
39AQI
15th June 2025
39AQI
39AQI
16th June 2025
38AQI
38AQI
17th June 2025
33AQI
33AQI
18th June 2025
31AQI
31AQI
19th June 2025
33AQI
33AQI
20th June 2025
39AQI
39AQI
21st June 2025
18AQI
18AQI
22nd June 2025
14AQI
14AQI
23rd June 2025
21AQI
21AQI
24th June 2025
26AQI
26AQI
25th June 2025
25AQI
25AQI
26th June 2025
27AQI
27AQI
27th June 2025
31AQI
31AQI
28th June 2025
31AQI
31AQI
29th June 2025
32AQI
32AQI
30th June 2025
29AQI
29AQI
1st July 2025
29AQI
29AQI
2nd July 2025
31AQI
31AQI
3rd July 2025
45AQI
45AQI
4th July 2025
33AQI
33AQI
5th July 2025
53AQI
53AQI
6th July 2025
36AQI
36AQI
7th July 2025
28AQI
28AQI
8th July 2025
26AQI
26AQI
9th July 2025
21AQI
21AQI
10th July 2025
41AQI
41AQI
11th July 2025
58AQI
58AQI
12th July 2025
58AQI
58AQI
13th July 2025
45AQI
45AQI
14th July 2025
34AQI
34AQI
15th July 2025
33AQI
33AQI
16th July 2025
37AQI
37AQI
17th July 2025
30AQI
30AQI
18th July 2025
28AQI
28AQI
19th July 2025
34AQI
34AQI
20th July 2025
30AQI
30AQI
21st July 2025
34AQI
34AQI
22nd July 2025
23AQI
23AQI
23rd July 2025
24AQI
24AQI
24th July 2025
23AQI
23AQI
25th July 2025
29AQI
29AQI
26th July 2025
26AQI
26AQI
27th July 2025
20AQI
20AQI
28th July 2025
27AQI
27AQI
29th July 2025
31AQI
31AQI
30th July 2025
38AQI
38AQI
31st July 2025
39AQI
39AQI
1st August 2025
42AQI
42AQI
2nd August 2025
35AQI
35AQI
3rd August 2025
38AQI
38AQI
4th August 2025
38AQI
38AQI
5th August 2025
38AQI
38AQI
6th August 2025
43AQI
43AQI
7th August 2025
40AQI
40AQI
8th August 2025
41AQI
41AQI
9th August 2025
49AQI
49AQI
10th August 2025
47AQI
47AQI
11th August 2025
46AQI
46AQI
12th August 2025
41AQI
41AQI
13th August 2025
40AQI
40AQI
14th August 2025
28AQI
28AQI
15th August 2025
46AQI
46AQI
16th August 2025
28AQI
28AQI
17th August 2025
22AQI
22AQI
18th August 2025
22AQI
22AQI
19th August 2025
28AQI
28AQI
20th August 2025
35AQI
35AQI
21st August 2025
46AQI
46AQI
22nd August 2025
51AQI
51AQI
23rd August 2025
53AQI
53AQI
24th August 2025
38AQI
38AQI
25th August 2025
41AQI
41AQI
26th August 2025
47AQI
47AQI
27th August 2025
52AQI
52AQI
28th August 2025
46AQI
46AQI
29th August 2025
43AQI
43AQI
30th August 2025
42AQI
42AQI
31st August 2025
39AQI
39AQI
1st September 2025
36AQI
36AQI
2nd September 2025
47AQI
47AQI
3rd September 2025
44AQI
44AQI
4th September 2025
39AQI
39AQI
5th September 2025
31AQI
31AQI
6th September 2025
43AQI
43AQI
7th September 2025
40AQI
40AQI
8th September 2025
32AQI
32AQI
9th September 2025
19AQI
19AQI
10th September 2025
23AQI
23AQI
11th September 2025
31AQI
31AQI
12th September 2025
42AQI
42AQI
13th September 2025
45AQI
45AQI
14th September 2025
41AQI
41AQI
15th September 2025
33AQI
33AQI
16th September 2025
46AQI
46AQI
17th September 2025
50AQI
50AQI
18th September 2025
48AQI
48AQI
19th September 2025
45AQI
45AQI
20th September 2025
52AQI
52AQI
21st September 2025
46AQI
46AQI
22nd September 2025
42AQI
42AQI
23rd September 2025
45AQI
45AQI
24th September 2025
56AQI
56AQI
25th September 2025
44AQI
44AQI
26th September 2025
47AQI
47AQI
27th September 2025
55AQI
55AQI
28th September 2025
39AQI
39AQI
29th September 2025
25AQI
25AQI
30th September 2025
23AQI
23AQI
1st October 2025
17AQI
17AQI
2nd October 2025
40AQI
40AQI
3rd October 2025
29AQI
29AQI
4th October 2025
38AQI
38AQI
5th October 2025
34AQI
34AQI
6th October 2025
25AQI
25AQI
7th October 2025
44AQI
44AQI
8th October 2025
69AQI
69AQI
9th October 2025
49AQI
49AQI
10th October 2025
46AQI
46AQI
11th October 2025
29AQI
29AQI
12th October 2025
46AQI
46AQI
13th October 2025
47AQI
47AQI
14th October 2025
39AQI
39AQI
15th October 2025
17AQI
17AQI
16th October 2025
32AQI
32AQI
17th October 2025
45AQI
45AQI
18th October 2025
49AQI
49AQI
19th October 2025
53AQI
53AQI
20th October 2025
33AQI
33AQI
21st October 2025
51AQI
51AQI
22nd October 2025
62AQI
62AQI
23rd October 2025
44AQI
44AQI
24th October 2025
54AQI
54AQI
25th October 2025
26AQI
26AQI
26th October 2025
29AQI
29AQI
27th October 2025
17AQI
17AQI
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
39AQI
28AQI
23AQI
24AQI
26AQI
33AQI
34AQI
40AQI
40AQI
39AQI
No. of days
Jan.Feb.Mar.Apr.MayJun.Jul.Aug.Sep.Oct.Nov.Dec.Total Days
202532AQI
24
7
27
1
31
30
31
29
1
28
3
28
3
27
3
22
5
277
23
Highest AQI recorded in
September40AQI
Lowest AQI recorded in
March23AQI
202434AQI
31
29
31
30
31
27
2
28
3
27
4
26
4
24
7
25
5
22
9
331
34
Highest AQI recorded in
July41AQI
Lowest AQI recorded in
March27AQI
202360AQI
23
1
1
6
24
4
31
28
29
2
22
1
1
6
22
7
25
6
22
8
23
1
7
22
7
26
5
297
42
1
1
19
Highest AQI recorded in
October132AQI
Lowest AQI recorded in
March28AQI
202236AQI
6
10
17
5
31
28
2
29
1
30
20
2
23
5
1
22
9
27
3
25
6
260
41
1
Highest AQI recorded in
January52AQI
Lowest AQI recorded in
July28AQI
202147AQI
20
10
26
2
28
3
23
7
18
13
17
13
26
5
13
8
10
12
15
1
22
9
23
3
3
3
231
91
11
Highest AQI recorded in
August75AQI
Lowest AQI recorded in
November34AQI
202054AQI
13
20
18
30
31
16
4
8
3
3
13
9
5
6
20
1
3
13
17
20
11
170
65
18
11
Highest AQI recorded in
September101AQI
Lowest AQI recorded in
March25AQI
Most & Least Polluted Years Over the Last 6 Years
Most Polluted Year Recorded
2023(Avg.)
60AQILeast Polluted Year Recorded
2025(Avg.)
32AQIColusa's annual 2025 AQI (32) shows an average percentage change of -26.2% (improved AQI) compared to previous years: 2020 (54), 2021 (47), 2022 (36), 2023 (60), 2024 (34).
