Alpine, 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
Alpine, California, United States
2021
2022
2023
2024
2025
AQI
.
Days
AQI Trends: Highest and Lowest
Highest AQI recorded on
8th Oct 2022
499AQILowest AQI recorded on
15th Oct 2025
14AQISame Day Analysis (23rd October ):
On this day, AQI across the 5 years varied significantly: 2025 ranks the most lowest AQI at 25 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: 23rd Oct - 24th Oct 2025
Alpine, California, United States
AQI
Day
Night
.
6 AM23rd Oct 2025
6 PM
5 AM24th Oct 2025
Day time
Avg. Highest Time
3PM23rd Oct
28AQI
Avg. Lowest Time
1PM23rd Oct
22AQI
Night time
Avg. Highest Time
8PM23rd Oct
33AQI
Avg. Lowest Time
5AM24th Oct
22AQI
In the last 24 hours,
Alpine's AQI reached its highest point of 33 at 8 PM during the Night, while the lowest point, 22, was recorded at 5 AM during the Night between 23rd Oct and 24th Oct 2025.
Day & Night AQI Trend : Sep - Oct 2025
Alpine, California, United States
SepOct
24th - 25th25th - 26th26th - 27th27th - 28th28th - 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
Day
Night
24th Sep 2025286 AMAQI
24th Sep 2025287 AMAQI
24th Sep 2025288 AMAQI
24th Sep 2025279 AMAQI
24th Sep 20252610 AMAQI
24th Sep 20252611 AMAQI
24th Sep 20252612 PMAQI
24th Sep 2025261 PMAQI
24th Sep 2025272 PMAQI
24th Sep 2025273 PMAQI
24th Sep 2025284 PMAQI
24th Sep 2025295 PMAQI
24th Sep 2025286 PMAQI
24th Sep 2025297 PMAQI
24th Sep 2025298 PMAQI
24th Sep 2025299 PMAQI
24th Sep 20252910 PMAQI
24th Sep 20252911 PMAQI
25th Sep 20252812 AMAQI
25th Sep 2025281 AMAQI
25th Sep 2025272 AMAQI
25th Sep 2025243 AMAQI
25th Sep 2025244 AMAQI
25th Sep 2025255 AMAQI
26°C20/34°C
25th Sep 2025266 AMAQI
25th Sep 2025227 AMAQI
25th Sep 2025228 AMAQI
25th Sep 2025229 AMAQI
25th Sep 20252010 AMAQI
25th Sep 20251811 AMAQI
25th Sep 20252212 PMAQI
25th Sep 2025281 PMAQI
25th Sep 2025302 PMAQI
25th Sep 2025333 PMAQI
25th Sep 2025354 PMAQI
25th Sep 2025365 PMAQI
25th Sep 2025316 PMAQI
25th Sep 2025297 PMAQI
25th Sep 2025288 PMAQI
25th Sep 2025259 PMAQI
25th Sep 20252310 PMAQI
25th Sep 20252511 PMAQI
26th Sep 20252912 AMAQI
26th Sep 2025291 AMAQI
26th Sep 2025282 AMAQI
26th Sep 2025283 AMAQI
26th Sep 2025264 AMAQI
26th Sep 2025265 AMAQI
23°C17/32°C
26th Sep 2025246 AMAQI
26th Sep 2025227 AMAQI
26th Sep 2025228 AMAQI
26th Sep 2025209 AMAQI
26th Sep 20252210 AMAQI
26th Sep 20252011 AMAQI
26th Sep 20252412 PMAQI
26th Sep 2025281 PMAQI
26th Sep 2025332 PMAQI
26th Sep 2025393 PMAQI
26th Sep 2025304 PMAQI
26th Sep 2025315 PMAQI
26th Sep 2025326 PMAQI
26th Sep 2025337 PMAQI
26th Sep 2025328 PMAQI
26th Sep 2025319 PMAQI
26th Sep 20252810 PMAQI
26th Sep 20252311 PMAQI
27th Sep 20251412 AMAQI
27th Sep 2025141 AMAQI
27th Sep 2025142 AMAQI
27th Sep 2025153 AMAQI
27th Sep 2025184 AMAQI
27th Sep 2025175 AMAQI
20°C16/23°C
27th Sep 2025206 AMAQI
27th Sep 2025247 AMAQI
27th Sep 2025278 AMAQI
27th Sep 2025289 AMAQI
27th Sep 20252610 AMAQI
27th Sep 20252411 AMAQI
27th Sep 20252612 PMAQI
27th Sep 2025271 PMAQI
27th Sep 2025262 PMAQI
27th Sep 2025263 PMAQI
27th Sep 2025224 PMAQI
27th Sep 2025205 PMAQI
27th Sep 2025196 PMAQI
27th Sep 2025187 PMAQI
27th Sep 2025188 PMAQI
27th Sep 2025199 PMAQI
27th Sep 20252010 PMAQI
27th Sep 20252111 PMAQI
28th Sep 20252212 AMAQI
28th Sep 2025221 AMAQI
28th Sep 2025242 AMAQI
28th Sep 2025283 AMAQI
28th Sep 2025264 AMAQI
28th Sep 2025245 AMAQI
20°C17/28°C
28th Sep 2025266 AMAQI
28th Sep 2025287 AMAQI
28th Sep 2025278 AMAQI
28th Sep 2025289 AMAQI
28th Sep 20253410 AMAQI
28th Sep 20253711 AMAQI
28th Sep 20253112 PMAQI
28th Sep 2025381 PMAQI
28th Sep 2025382 PMAQI
28th Sep 2025323 PMAQI
28th Sep 2025324 PMAQI
28th Sep 2025325 PMAQI
28th Sep 2025326 PMAQI
28th Sep 2025357 PMAQI
28th Sep 2025358 PMAQI
28th Sep 2025329 PMAQI
28th Sep 20253010 PMAQI
28th Sep 20253111 PMAQI
29th Sep 20252812 AMAQI
29th Sep 2025261 AMAQI
29th Sep 2025262 AMAQI
29th Sep 2025273 AMAQI
29th Sep 2025284 AMAQI
29th Sep 2025335 AMAQI
22°C17/30°C
29th Sep 2025326 AMAQI
29th Sep 2025357 AMAQI
29th Sep 2025328 AMAQI
29th Sep 2025269 AMAQI
29th Sep 20253110 AMAQI
29th Sep 20253311 AMAQI
29th Sep 20253212 PMAQI
29th Sep 2025321 PMAQI
29th Sep 2025372 PMAQI
29th Sep 2025333 PMAQI
29th Sep 2025384 PMAQI
29th Sep 2025375 PMAQI
29th Sep 2025366 PMAQI
29th Sep 2025337 PMAQI
29th Sep 2025278 PMAQI
29th Sep 2025269 PMAQI
29th Sep 20252510 PMAQI
29th Sep 20252411 PMAQI
30th Sep 20252412 AMAQI
30th Sep 2025261 AMAQI
30th Sep 2025242 AMAQI
30th Sep 2025263 AMAQI
30th Sep 2025264 AMAQI
30th Sep 2025255 AMAQI
21°C15/31°C
30th Sep 2025256 AMAQI
30th Sep 2025277 AMAQI
30th Sep 2025288 AMAQI
30th Sep 2025299 AMAQI
30th Sep 20252810 AMAQI
30th Sep 20252711 AMAQI
30th Sep 20252712 PMAQI
30th Sep 2025311 PMAQI
30th Sep 2025312 PMAQI
30th Sep 2025353 PMAQI
30th Sep 2025394 PMAQI
30th Sep 2025445 PMAQI
30th Sep 2025426 PMAQI
30th Sep 2025397 PMAQI
30th Sep 2025368 PMAQI
30th Sep 2025389 PMAQI
30th Sep 20254010 PMAQI
30th Sep 20254211 PMAQI
1st Oct 20254412 AMAQI
1st Oct 2025441 AMAQI
1st Oct 2025462 AMAQI
1st Oct 2025443 AMAQI
1st Oct 2025444 AMAQI
1st Oct 2025475 AMAQI
21°C16/29°C
1st Oct 2025456 AMAQI
1st Oct 2025467 AMAQI
1st Oct 2025468 AMAQI
1st Oct 2025499 AMAQI
1st Oct 20254810 AMAQI
1st Oct 20255011 AMAQI
1st Oct 20255212 PMAQI
1st Oct 2025541 PMAQI
1st Oct 2025492 PMAQI
1st Oct 2025463 PMAQI
1st Oct 2025424 PMAQI
1st Oct 2025385 PMAQI
1st Oct 2025406 PMAQI
1st Oct 2025377 PMAQI
1st Oct 2025118 PMAQI
1st Oct 2025109 PMAQI
1st Oct 2025910 PMAQI
1st Oct 20251111 PMAQI
2nd Oct 20251112 AMAQI
2nd Oct 2025101 AMAQI
2nd Oct 202592 AMAQI
2nd Oct 202583 AMAQI
2nd Oct 202584 AMAQI
2nd Oct 2025205 AMAQI
21°C15/31°C
2nd Oct 2025476 AMAQI
2nd Oct 2025477 AMAQI
2nd Oct 2025518 AMAQI
2nd Oct 2025549 AMAQI
2nd Oct 20255510 AMAQI
2nd Oct 20255811 AMAQI
2nd Oct 20256012 PMAQI
2nd Oct 2025601 PMAQI
2nd Oct 2025502 PMAQI
2nd Oct 2025223 PMAQI
2nd Oct 2025334 PMAQI
2nd Oct 2025275 PMAQI
2nd Oct 2025136 PMAQI
2nd Oct 2025127 PMAQI
2nd Oct 2025108 PMAQI
2nd Oct 2025119 PMAQI
2nd Oct 20251110 PMAQI
2nd Oct 20251011 PMAQI
3rd Oct 20251112 AMAQI
3rd Oct 2025301 AMAQI
3rd Oct 2025402 AMAQI
3rd Oct 2025363 AMAQI
3rd Oct 2025234 AMAQI
3rd Oct 2025125 AMAQI
21°C14/31°C
3rd Oct 2025206 AMAQI
3rd Oct 2025417 AMAQI
3rd Oct 2025398 AMAQI
3rd Oct 2025409 AMAQI
3rd Oct 20254410 AMAQI
3rd Oct 20255511 AMAQI
3rd Oct 20255412 PMAQI
3rd Oct 2025411 PMAQI
3rd Oct 2025112 PMAQI
3rd Oct 2025123 PMAQI
3rd Oct 2025244 PMAQI
3rd Oct 2025325 PMAQI
3rd Oct 2025146 PMAQI
3rd Oct 2025147 PMAQI
3rd Oct 2025228 PMAQI
3rd Oct 2025409 PMAQI
3rd Oct 20253010 PMAQI
3rd Oct 20254111 PMAQI
4th Oct 20253912 AMAQI
4th Oct 2025451 AMAQI
4th Oct 2025492 AMAQI
4th Oct 2025443 AMAQI
4th Oct 2025444 AMAQI
4th Oct 2025475 AMAQI
19°C14/25°C
4th Oct 2025496 AMAQI
4th Oct 2025447 AMAQI
4th Oct 2025518 AMAQI
4th Oct 2025559 AMAQI
4th Oct 20255610 AMAQI
4th Oct 20255711 AMAQI
4th Oct 20255612 PMAQI
4th Oct 2025511 PMAQI
4th Oct 2025492 PMAQI
4th Oct 2025433 PMAQI
4th Oct 2025444 PMAQI
4th Oct 2025485 PMAQI
4th Oct 2025476 PMAQI
4th Oct 2025477 PMAQI
4th Oct 2025448 PMAQI
4th Oct 2025469 PMAQI
4th Oct 20254510 PMAQI
4th Oct 20253811 PMAQI
5th Oct 20253612 AMAQI
5th Oct 2025411 AMAQI
5th Oct 2025462 AMAQI
5th Oct 2025463 AMAQI
5th Oct 2025464 AMAQI
5th Oct 2025465 AMAQI
19°C12/28°C
5th Oct 2025416 AMAQI
5th Oct 2025397 AMAQI
5th Oct 2025398 AMAQI
5th Oct 2025399 AMAQI
5th Oct 20253910 AMAQI
5th Oct 20253911 AMAQI
5th Oct 20253912 PMAQI
5th Oct 2025461 PMAQI
5th Oct 2025512 PMAQI
5th Oct 2025523 PMAQI
5th Oct 2025464 PMAQI
5th Oct 2025495 PMAQI
5th Oct 2025556 PMAQI
5th Oct 2025557 PMAQI
5th Oct 2025518 PMAQI
5th Oct 2025519 PMAQI
5th Oct 20255110 PMAQI
5th Oct 20255011 PMAQI
6th Oct 20255112 AMAQI
6th Oct 2025521 AMAQI
6th Oct 2025522 AMAQI
6th Oct 2025513 AMAQI
6th Oct 2025504 AMAQI
6th Oct 2025425 AMAQI
19°C13/29°C
6th Oct 2025406 AMAQI
6th Oct 2025367 AMAQI
6th Oct 2025378 AMAQI
6th Oct 2025449 AMAQI
6th Oct 20255210 AMAQI
7th Oct 2025474 AMAQI
7th Oct 2025515 AMAQI
18°C13/27°C
7th Oct 2025496 AMAQI
7th Oct 2025517 AMAQI
7th Oct 2025518 AMAQI
7th Oct 2025499 AMAQI
7th Oct 20255110 AMAQI
7th Oct 20254711 AMAQI
7th Oct 20254512 PMAQI
7th Oct 2025501 PMAQI
7th Oct 2025502 PMAQI
7th Oct 2025533 PMAQI
7th Oct 2025534 PMAQI
7th Oct 2025535 PMAQI
7th Oct 2025546 PMAQI
7th Oct 2025577 PMAQI
7th Oct 2025588 PMAQI
7th Oct 2025609 PMAQI
7th Oct 20255710 PMAQI
7th Oct 20255911 PMAQI
8th Oct 20255812 AMAQI
8th Oct 2025581 AMAQI
8th Oct 2025572 AMAQI
8th Oct 2025573 AMAQI
8th Oct 2025524 AMAQI
8th Oct 2025485 AMAQI
20°C12/29°C
8th Oct 2025506 AMAQI
8th Oct 2025487 AMAQI
8th Oct 2025398 AMAQI
8th Oct 2025409 AMAQI
8th Oct 20254310 AMAQI
8th Oct 20254211 AMAQI
8th Oct 20254112 PMAQI
8th Oct 2025461 PMAQI
8th Oct 2025452 PMAQI
8th Oct 2025473 PMAQI
8th Oct 2025504 PMAQI
8th Oct 2025525 PMAQI
8th Oct 2025556 PMAQI
8th Oct 2025587 PMAQI
8th Oct 2025568 PMAQI
8th Oct 2025579 PMAQI
8th Oct 20255710 PMAQI
8th Oct 20255711 PMAQI
9th Oct 20255412 AMAQI
9th Oct 2025541 AMAQI
9th Oct 2025552 AMAQI
9th Oct 2025553 AMAQI
9th Oct 2025464 AMAQI
9th Oct 2025505 AMAQI
20°C12/30°C
9th Oct 2025516 AMAQI
9th Oct 2025467 AMAQI
9th Oct 2025478 AMAQI
9th Oct 2025499 AMAQI
9th Oct 20255910 AMAQI
9th Oct 20256411 AMAQI
9th Oct 20254712 PMAQI
9th Oct 2025431 PMAQI
9th Oct 2025462 PMAQI
9th Oct 2025483 PMAQI
9th Oct 2025474 PMAQI
9th Oct 2025435 PMAQI
9th Oct 2025476 PMAQI
9th Oct 2025447 PMAQI
9th Oct 2025478 PMAQI
9th Oct 2025479 PMAQI
9th Oct 20254610 PMAQI
9th Oct 20255111 PMAQI
10th Oct 20253912 AMAQI
10th Oct 2025411 AMAQI
10th Oct 2025382 AMAQI
10th Oct 2025373 AMAQI
10th Oct 2025364 AMAQI
10th Oct 2025345 AMAQI
22°C15/34°C
10th Oct 2025346 AMAQI
10th Oct 2025377 AMAQI
10th Oct 2025398 AMAQI
10th Oct 2025459 AMAQI
10th Oct 20254610 AMAQI
10th Oct 20255611 AMAQI
10th Oct 20255812 PMAQI
10th Oct 2025571 PMAQI
10th Oct 2025512 PMAQI
10th Oct 2025413 PMAQI
10th Oct 2025524 PMAQI
10th Oct 2025545 PMAQI
10th Oct 2025556 PMAQI
10th Oct 2025497 PMAQI
10th Oct 2025478 PMAQI
10th Oct 2025519 PMAQI
10th Oct 20255010 PMAQI
10th Oct 20255211 PMAQI
11th Oct 20254912 AMAQI
11th Oct 2025491 AMAQI
11th Oct 2025482 AMAQI
11th Oct 2025543 AMAQI
11th Oct 2025554 AMAQI
11th Oct 2025545 AMAQI
25°C19/36°C
11th Oct 2025516 AMAQI
11th Oct 2025487 AMAQI
11th Oct 2025508 AMAQI
11th Oct 2025489 AMAQI
11th Oct 20254910 AMAQI
11th Oct 20254911 AMAQI
11th Oct 20253812 PMAQI
11th Oct 2025381 PMAQI
11th Oct 2025422 PMAQI
11th Oct 2025523 PMAQI
11th Oct 2025554 PMAQI
11th Oct 2025525 PMAQI
11th Oct 2025516 PMAQI
11th Oct 2025497 PMAQI
11th Oct 2025518 PMAQI
11th Oct 2025479 PMAQI
11th Oct 20254510 PMAQI
11th Oct 20254511 PMAQI
12th Oct 20254612 AMAQI
12th Oct 2025431 AMAQI
12th Oct 2025462 AMAQI
12th Oct 2025423 AMAQI
12th Oct 2025504 AMAQI
12th Oct 2025475 AMAQI
23°C16/31°C
12th Oct 2025406 AMAQI
12th Oct 2025437 AMAQI
12th Oct 2025538 AMAQI
12th Oct 2025489 AMAQI
12th Oct 20255010 AMAQI
12th Oct 20255211 AMAQI
12th Oct 20255312 PMAQI
12th Oct 2025581 PMAQI
12th Oct 2025562 PMAQI
12th Oct 2025543 PMAQI
12th Oct 2025544 PMAQI
12th Oct 2025575 PMAQI
12th Oct 2025516 PMAQI
12th Oct 2025577 PMAQI
12th Oct 2025578 PMAQI
12th Oct 2025539 PMAQI
12th Oct 20255410 PMAQI
12th Oct 20255511 PMAQI
13th Oct 20255312 AMAQI
13th Oct 2025531 AMAQI
13th Oct 2025542 AMAQI
13th Oct 2025533 AMAQI
13th Oct 2025534 AMAQI
13th Oct 2025525 AMAQI
20°C13/31°C
13th Oct 2025526 AMAQI
13th Oct 2025467 AMAQI
13th Oct 2025488 AMAQI
13th Oct 2025579 AMAQI
13th Oct 20255710 AMAQI
13th Oct 20255811 AMAQI
13th Oct 20255012 PMAQI
13th Oct 2025441 PMAQI
13th Oct 2025402 PMAQI
13th Oct 2025473 PMAQI
13th Oct 2025454 PMAQI
13th Oct 2025475 PMAQI
13th Oct 2025506 PMAQI
13th Oct 2025527 PMAQI
13th Oct 2025508 PMAQI
13th Oct 2025549 PMAQI
13th Oct 20255310 PMAQI
13th Oct 20255411 PMAQI
14th Oct 20255312 AMAQI
14th Oct 2025551 AMAQI
14th Oct 2025552 AMAQI
14th Oct 2025523 AMAQI
14th Oct 2025464 AMAQI
14th Oct 2025445 AMAQI
16°C13/20°C
14th Oct 2025476 AMAQI
14th Oct 2025457 AMAQI
14th Oct 2025418 AMAQI
14th Oct 2025399 AMAQI
14th Oct 20253810 AMAQI
14th Oct 20255211 AMAQI
14th Oct 20256512 PMAQI
14th Oct 2025691 PMAQI
14th Oct 2025662 PMAQI
14th Oct 2025593 PMAQI
14th Oct 2025414 PMAQI
14th Oct 2025465 PMAQI
14th Oct 2025516 PMAQI
14th Oct 2025467 PMAQI
14th Oct 2025188 PMAQI
14th Oct 2025199 PMAQI
14th Oct 2025810 PMAQI
14th Oct 2025711 PMAQI
15th Oct 2025712 AMAQI
15th Oct 202561 AMAQI
15th Oct 202562 AMAQI
15th Oct 202563 AMAQI
15th Oct 202564 AMAQI
15th Oct 202565 AMAQI
16°C13/20°C
15th Oct 2025156 AMAQI
15th Oct 2025387 AMAQI
15th Oct 2025418 AMAQI
15th Oct 2025309 AMAQI
15th Oct 2025910 AMAQI
15th Oct 20251811 AMAQI
15th Oct 20253112 PMAQI
15th Oct 2025411 PMAQI
15th Oct 2025352 PMAQI
15th Oct 2025103 PMAQI
15th Oct 2025104 PMAQI
15th Oct 2025125 PMAQI
15th Oct 202596 PMAQI
15th Oct 202597 PMAQI
15th Oct 2025108 PMAQI
15th Oct 202599 PMAQI
15th Oct 20252210 PMAQI
15th Oct 20251911 PMAQI
16th Oct 20251612 AMAQI
16th Oct 202581 AMAQI
16th Oct 202592 AMAQI
16th Oct 202593 AMAQI
16th Oct 202594 AMAQI
16th Oct 2025195 AMAQI
15°C12/19°C
16th Oct 2025446 AMAQI
16th Oct 2025367 AMAQI
16th Oct 2025358 AMAQI
16th Oct 2025339 AMAQI
16th Oct 20253810 AMAQI
16th Oct 20253811 AMAQI
16th Oct 20253512 PMAQI
16th Oct 2025261 PMAQI
16th Oct 202572 PMAQI
16th Oct 202593 PMAQI
16th Oct 2025134 PMAQI
16th Oct 2025125 PMAQI
16th Oct 2025166 PMAQI
16th Oct 2025127 PMAQI
16th Oct 202598 PMAQI
16th Oct 202589 PMAQI
16th Oct 20252210 PMAQI
16th Oct 20253411 PMAQI
17th Oct 20253812 AMAQI
17th Oct 2025421 AMAQI
17th Oct 2025372 AMAQI
17th Oct 2025423 AMAQI
17th Oct 2025364 AMAQI
17th Oct 2025355 AMAQI
18°C12/28°C
17th Oct 2025346 AMAQI
17th Oct 2025297 AMAQI
17th Oct 2025328 AMAQI
17th Oct 2025309 AMAQI
17th Oct 20253110 AMAQI
17th Oct 20254111 AMAQI
17th Oct 20253812 PMAQI
17th Oct 2025331 PMAQI
17th Oct 2025322 PMAQI
17th Oct 2025293 PMAQI
17th Oct 202594 PMAQI
17th Oct 202595 PMAQI
17th Oct 2025106 PMAQI
17th Oct 2025187 PMAQI
17th Oct 2025388 PMAQI
17th Oct 2025409 PMAQI
17th Oct 20254710 PMAQI
17th Oct 20254511 PMAQI
18th Oct 20254212 AMAQI
18th Oct 2025381 AMAQI
18th Oct 2025362 AMAQI
18th Oct 2025343 AMAQI
18th Oct 2025294 AMAQI
18th Oct 2025295 AMAQI
22°C15/31°C
18th Oct 2025306 AMAQI
18th Oct 2025457 AMAQI
18th Oct 2025598 AMAQI
18th Oct 2025619 AMAQI
18th Oct 20254510 AMAQI
18th Oct 20253711 AMAQI
18th Oct 20254212 PMAQI
18th Oct 2025421 PMAQI
18th Oct 2025292 PMAQI
18th Oct 202573 PMAQI
18th Oct 2025114 PMAQI
18th Oct 2025135 PMAQI
18th Oct 2025146 PMAQI
18th Oct 2025107 PMAQI
18th Oct 2025118 PMAQI
18th Oct 2025139 PMAQI
18th Oct 20252010 PMAQI
18th Oct 20254111 PMAQI
19th Oct 20254612 AMAQI
19th Oct 2025381 AMAQI
19th Oct 2025372 AMAQI
19th Oct 2025353 AMAQI
19th Oct 2025354 AMAQI
19th Oct 2025365 AMAQI
23°C16/33°C
19th Oct 2025376 AMAQI
19th Oct 2025327 AMAQI
19th Oct 2025368 AMAQI
19th Oct 2025599 AMAQI
19th Oct 20256810 AMAQI
19th Oct 20257511 AMAQI
19th Oct 20256712 PMAQI
19th Oct 2025581 PMAQI
19th Oct 2025492 PMAQI
19th Oct 2025213 PMAQI
19th Oct 2025214 PMAQI
19th Oct 2025135 PMAQI
19th Oct 2025136 PMAQI
19th Oct 2025137 PMAQI
19th Oct 2025288 PMAQI
19th Oct 2025329 PMAQI
19th Oct 20251110 PMAQI
19th Oct 20251211 PMAQI
20th Oct 20253012 AMAQI
20th Oct 2025651 AMAQI
20th Oct 2025672 AMAQI
20th Oct 2025633 AMAQI
20th Oct 2025544 AMAQI
20th Oct 2025545 AMAQI
23°C16/33°C
20th Oct 2025656 AMAQI
20th Oct 2025647 AMAQI
20th Oct 2025748 AMAQI
20th Oct 2025679 AMAQI
20th Oct 20255010 AMAQI
20th Oct 20255211 AMAQI
20th Oct 20255212 PMAQI
20th Oct 2025511 PMAQI
20th Oct 2025532 PMAQI
20th Oct 2025343 PMAQI
20th Oct 2025134 PMAQI
20th Oct 2025175 PMAQI
20th Oct 2025176 PMAQI
20th Oct 2025207 PMAQI
20th Oct 2025128 PMAQI
20th Oct 2025119 PMAQI
20th Oct 20253110 PMAQI
20th Oct 20255311 PMAQI
21st Oct 20255412 AMAQI
21st Oct 2025581 AMAQI
21st Oct 2025632 AMAQI
21st Oct 2025613 AMAQI
21st Oct 2025634 AMAQI
21st Oct 2025685 AMAQI
23°C17/34°C
21st Oct 2025466 AMAQI
21st Oct 2025217 AMAQI
21st Oct 2025228 AMAQI
21st Oct 2025229 AMAQI
21st Oct 20252010 AMAQI
21st Oct 20251711 AMAQI
21st Oct 20251412 PMAQI
21st Oct 2025121 PMAQI
21st Oct 2025142 PMAQI
21st Oct 2025173 PMAQI
21st Oct 2025174 PMAQI
21st Oct 2025195 PMAQI
21st Oct 2025276 PMAQI
21st Oct 2025417 PMAQI
21st Oct 2025508 PMAQI
21st Oct 2025479 PMAQI
21st Oct 20254610 PMAQI
21st Oct 20254911 PMAQI
22nd Oct 20254812 AMAQI
22nd Oct 2025441 AMAQI
22nd Oct 2025442 AMAQI
22nd Oct 2025493 AMAQI
22nd Oct 2025594 AMAQI
22nd Oct 2025605 AMAQI
21°C15/30°C
22nd Oct 2025616 AMAQI
22nd Oct 2025627 AMAQI
22nd Oct 2025608 AMAQI
22nd Oct 2025599 AMAQI
22nd Oct 20255910 AMAQI
22nd Oct 20255711 AMAQI
22nd Oct 20255512 PMAQI
22nd Oct 2025521 PMAQI
22nd Oct 2025442 PMAQI
22nd Oct 2025343 PMAQI
22nd Oct 2025304 PMAQI
22nd Oct 2025335 PMAQI
22nd Oct 2025306 PMAQI
22nd Oct 2025287 PMAQI
22nd Oct 2025288 PMAQI
22nd Oct 2025289 PMAQI
22nd Oct 20252810 PMAQI
22nd Oct 20252811 PMAQI
23rd Oct 20252812 AMAQI
23rd Oct 2025281 AMAQI
23rd Oct 2025252 AMAQI
23rd Oct 2025223 AMAQI
23rd Oct 2025224 AMAQI
23rd Oct 2025225 AMAQI
18°C13/26°C
23rd Oct 2025226 AMAQI
23rd Oct 2025227 AMAQI
23rd Oct 2025228 AMAQI
23rd Oct 2025229 AMAQI
23rd Oct 20252210 AMAQI
23rd Oct 20252211 AMAQI
23rd Oct 20252212 PMAQI
23rd Oct 2025221 PMAQI
23rd Oct 2025252 PMAQI
23rd Oct 2025283 PMAQI
23rd Oct 2025284 PMAQI
23rd Oct 2025285 PMAQI
23rd Oct 2025286 PMAQI
23rd Oct 2025307 PMAQI
23rd Oct 2025338 PMAQI
23rd Oct 2025339 PMAQI
23rd Oct 20253310 PMAQI
23rd Oct 20253311 PMAQI
24th Oct 20253312 AMAQI
24th Oct 2025331 AMAQI
24th Oct 2025332 AMAQI
24th Oct 2025303 AMAQI
24th Oct 2025264 AMAQI
24th Oct 2025225 AMAQI
19°C12/28°C
24th Oct 2025226 AMAQI
6 AM24th Oct 2025207 AMAQI
12 PM
6 PM
12 AM
5 AM
--°C/°C
Day time
Avg. Highest Time
8 AM - 1 PM
41AQI
6 hours / Day
180 hours / Month
Avg. Lowest Time
4 PM
33AQI
1 hours / Day
30 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 8 AM to 1 PM (Avg. 41), while the lowest AQI was between 4 PM to 4 PM (Avg. 33).
Night time
Avg. Highest Time
1 AM - 5 AM
37AQI
5 hours / Day
150 hours / Month
Avg. Lowest Time
8 PM - 10 PM
33AQI
3 hours / Day
90 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 1 AM to 5 AM (Avg. 37), while the lowest AQI was between 8 PM to 10 PM (Avg. 33).
2025 Days Vs Air Quality
Alpine, California, United States
2025
88%
259
13%
37
Total number of days with different AQI categories in last 297 days in 2025 (68 days remaining)
Good
259 DaysModerate
37 DaysPoor
0 DaysUnhealthy
0 DaysSevere
0 DaysHazardous
0 DaysUnder WHO’s Safe Air Quality Limits: 88%
Health Risk Level:
Low
In 2025, 88% of 297 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
Alpine, 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
46AQI
46AQI
2nd January 2025
34AQI
34AQI
3rd January 2025
39AQI
39AQI
4th January 2025
47AQI
47AQI
5th January 2025
34AQI
34AQI
6th January 2025
31AQI
31AQI
7th January 2025
36AQI
36AQI
8th January 2025
47AQI
47AQI
9th January 2025
33AQI
33AQI
10th January 2025
32AQI
32AQI
11th January 2025
39AQI
39AQI
12th January 2025
31AQI
31AQI
13th January 2025
33AQI
33AQI
14th January 2025
32AQI
32AQI
15th January 2025
31AQI
31AQI
16th January 2025
31AQI
31AQI
17th January 2025
35AQI
35AQI
18th January 2025
39AQI
39AQI
19th January 2025
46AQI
46AQI
20th January 2025
49AQI
49AQI
21st January 2025
34AQI
34AQI
22nd January 2025
31AQI
31AQI
23rd January 2025
31AQI
31AQI
24th January 2025
43AQI
43AQI
25th January 2025
77AQI
77AQI
26th January 2025
32AQI
32AQI
27th January 2025
30AQI
30AQI
28th January 2025
33AQI
33AQI
29th January 2025
36AQI
36AQI
30th January 2025
42AQI
42AQI
31st January 2025
42AQI
42AQI
1st February 2025
40AQI
40AQI
2nd February 2025
37AQI
37AQI
3rd February 2025
30AQI
30AQI
4th February 2025
45AQI
45AQI
5th February 2025
29AQI
29AQI
6th February 2025
28AQI
28AQI
7th February 2025
23AQI
23AQI
8th February 2025
26AQI
26AQI
9th February 2025
31AQI
31AQI
10th February 2025
40AQI
40AQI
11th February 2025
33AQI
33AQI
12th February 2025
33AQI
33AQI
13th February 2025
26AQI
26AQI
14th February 2025
31AQI
31AQI
15th February 2025
31AQI
31AQI
16th February 2025
30AQI
30AQI
17th February 2025
32AQI
32AQI
18th February 2025
44AQI
44AQI
19th February 2025
33AQI
33AQI
20th February 2025
36AQI
36AQI
21st February 2025
33AQI
33AQI
22nd February 2025
32AQI
32AQI
23rd February 2025
32AQI
32AQI
24th February 2025
34AQI
34AQI
25th February 2025
38AQI
38AQI
26th February 2025
37AQI
37AQI
27th February 2025
33AQI
33AQI
28th February 2025
34AQI
34AQI
1st March 2025
34AQI
34AQI
2nd March 2025
35AQI
35AQI
3rd March 2025
32AQI
32AQI
4th March 2025
31AQI
31AQI
5th March 2025
34AQI
34AQI
6th March 2025
32AQI
32AQI
7th March 2025
31AQI
31AQI
8th March 2025
30AQI
30AQI
9th March 2025
32AQI
32AQI
10th March 2025
35AQI
35AQI
11th March 2025
32AQI
32AQI
12th March 2025
30AQI
30AQI
13th March 2025
22AQI
22AQI
14th March 2025
20AQI
20AQI
15th March 2025
23AQI
23AQI
16th March 2025
29AQI
29AQI
17th March 2025
33AQI
33AQI
18th March 2025
24AQI
24AQI
19th March 2025
23AQI
23AQI
20th March 2025
20AQI
20AQI
21st March 2025
26AQI
26AQI
22nd March 2025
28AQI
28AQI
23rd March 2025
37AQI
37AQI
24th March 2025
35AQI
35AQI
25th March 2025
30AQI
30AQI
26th March 2025
31AQI
31AQI
27th March 2025
27AQI
27AQI
28th March 2025
25AQI
25AQI
29th March 2025
34AQI
34AQI
30th March 2025
39AQI
39AQI
31st March 2025
28AQI
28AQI
1st April 2025
23AQI
23AQI
2nd April 2025
30AQI
30AQI
3rd April 2025
25AQI
25AQI
4th April 2025
20AQI
20AQI
5th April 2025
18AQI
18AQI
6th April 2025
18AQI
18AQI
7th April 2025
19AQI
19AQI
8th April 2025
25AQI
25AQI
9th April 2025
29AQI
29AQI
10th April 2025
30AQI
30AQI
11th April 2025
34AQI
34AQI
12th April 2025
35AQI
35AQI
13th April 2025
42AQI
42AQI
14th April 2025
43AQI
43AQI
15th April 2025
42AQI
42AQI
16th April 2025
32AQI
32AQI
17th April 2025
21AQI
21AQI
18th April 2025
23AQI
23AQI
19th April 2025
25AQI
25AQI
20th April 2025
27AQI
27AQI
21st April 2025
35AQI
35AQI
22nd April 2025
38AQI
38AQI
23rd April 2025
39AQI
39AQI
24th April 2025
37AQI
37AQI
25th April 2025
35AQI
35AQI
26th April 2025
21AQI
21AQI
27th April 2025
21AQI
21AQI
28th April 2025
20AQI
20AQI
29th April 2025
33AQI
33AQI
30th April 2025
37AQI
37AQI
1st May 2025
45AQI
45AQI
2nd May 2025
31AQI
31AQI
3rd May 2025
40AQI
40AQI
4th May 2025
21AQI
21AQI
5th May 2025
24AQI
24AQI
6th May 2025
42AQI
42AQI
7th May 2025
43AQI
43AQI
8th May 2025
37AQI
37AQI
9th May 2025
29AQI
29AQI
10th May 2025
28AQI
28AQI
11th May 2025
34AQI
34AQI
12th May 2025
46AQI
46AQI
13th May 2025
27AQI
27AQI
14th May 2025
27AQI
27AQI
15th May 2025
39AQI
39AQI
16th May 2025
48AQI
48AQI
17th May 2025
47AQI
47AQI
18th May 2025
28AQI
28AQI
19th May 2025
35AQI
35AQI
20th May 2025
38AQI
38AQI
21st May 2025
39AQI
39AQI
22nd May 2025
47AQI
47AQI
23rd May 2025
52AQI
52AQI
24th May 2025
53AQI
53AQI
25th May 2025
47AQI
47AQI
26th May 2025
46AQI
46AQI
27th May 2025
49AQI
49AQI
28th May 2025
48AQI
48AQI
29th May 2025
43AQI
43AQI
30th May 2025
43AQI
43AQI
31st May 2025
44AQI
44AQI
1st June 2025
33AQI
33AQI
2nd June 2025
32AQI
32AQI
3rd June 2025
32AQI
32AQI
4th June 2025
28AQI
28AQI
5th June 2025
25AQI
25AQI
6th June 2025
27AQI
27AQI
7th June 2025
29AQI
29AQI
8th June 2025
34AQI
34AQI
9th June 2025
36AQI
36AQI
10th June 2025
40AQI
40AQI
11th June 2025
43AQI
43AQI
12th June 2025
42AQI
42AQI
13th June 2025
54AQI
54AQI
14th June 2025
49AQI
49AQI
15th June 2025
43AQI
43AQI
16th June 2025
44AQI
44AQI
17th June 2025
51AQI
51AQI
18th June 2025
64AQI
64AQI
19th June 2025
60AQI
60AQI
20th June 2025
54AQI
54AQI
21st June 2025
53AQI
53AQI
22nd June 2025
53AQI
53AQI
23rd June 2025
54AQI
54AQI
24th June 2025
58AQI
58AQI
25th June 2025
53AQI
53AQI
26th June 2025
46AQI
46AQI
27th June 2025
47AQI
47AQI
28th June 2025
40AQI
40AQI
29th June 2025
40AQI
40AQI
30th June 2025
34AQI
34AQI
1st July 2025
47AQI
47AQI
2nd July 2025
42AQI
42AQI
3rd July 2025
38AQI
38AQI
4th July 2025
40AQI
40AQI
5th July 2025
51AQI
51AQI
6th July 2025
45AQI
45AQI
7th July 2025
46AQI
46AQI
8th July 2025
52AQI
52AQI
9th July 2025
40AQI
40AQI
10th July 2025
35AQI
35AQI
11th July 2025
53AQI
53AQI
12th July 2025
52AQI
52AQI
13th July 2025
46AQI
46AQI
14th July 2025
44AQI
44AQI
15th July 2025
37AQI
37AQI
16th July 2025
35AQI
35AQI
17th July 2025
27AQI
27AQI
18th July 2025
32AQI
32AQI
19th July 2025
38AQI
38AQI
20th July 2025
41AQI
41AQI
21st July 2025
41AQI
41AQI
22nd July 2025
31AQI
31AQI
23rd July 2025
27AQI
27AQI
24th July 2025
26AQI
26AQI
25th July 2025
22AQI
22AQI
26th July 2025
25AQI
25AQI
27th July 2025
24AQI
24AQI
28th July 2025
27AQI
27AQI
29th July 2025
31AQI
31AQI
30th July 2025
31AQI
31AQI
31st July 2025
38AQI
38AQI
1st August 2025
42AQI
42AQI
2nd August 2025
42AQI
42AQI
3rd August 2025
45AQI
45AQI
4th August 2025
66AQI
66AQI
5th August 2025
76AQI
76AQI
6th August 2025
58AQI
58AQI
7th August 2025
68AQI
68AQI
8th August 2025
57AQI
57AQI
9th August 2025
57AQI
57AQI
10th August 2025
60AQI
60AQI
11th August 2025
54AQI
54AQI
12th August 2025
57AQI
57AQI
13th August 2025
58AQI
58AQI
14th August 2025
67AQI
67AQI
15th August 2025
52AQI
52AQI
16th August 2025
38AQI
38AQI
17th August 2025
35AQI
35AQI
18th August 2025
33AQI
33AQI
19th August 2025
30AQI
30AQI
20th August 2025
31AQI
31AQI
21st August 2025
34AQI
34AQI
22nd August 2025
52AQI
52AQI
23rd August 2025
52AQI
52AQI
24th August 2025
53AQI
53AQI
25th August 2025
51AQI
51AQI
26th August 2025
41AQI
41AQI
27th August 2025
36AQI
36AQI
28th August 2025
37AQI
37AQI
29th August 2025
28AQI
28AQI
30th August 2025
32AQI
32AQI
31st August 2025
42AQI
42AQI
1st September 2025
49AQI
49AQI
2nd September 2025
35AQI
35AQI
3rd September 2025
33AQI
33AQI
4th September 2025
32AQI
32AQI
5th September 2025
37AQI
37AQI
6th September 2025
33AQI
33AQI
7th September 2025
28AQI
28AQI
8th September 2025
20AQI
20AQI
9th September 2025
22AQI
22AQI
10th September 2025
26AQI
26AQI
11th September 2025
27AQI
27AQI
12th September 2025
28AQI
28AQI
13th September 2025
41AQI
41AQI
14th September 2025
39AQI
39AQI
15th September 2025
37AQI
37AQI
16th September 2025
28AQI
28AQI
17th September 2025
31AQI
31AQI
18th September 2025
28AQI
28AQI
19th September 2025
26AQI
26AQI
20th September 2025
23AQI
23AQI
21st September 2025
24AQI
24AQI
22nd September 2025
22AQI
22AQI
23rd September 2025
24AQI
24AQI
24th September 2025
28AQI
28AQI
25th September 2025
26AQI
26AQI
26th September 2025
28AQI
28AQI
27th September 2025
20AQI
20AQI
28th September 2025
30AQI
30AQI
29th September 2025
30AQI
30AQI
30th September 2025
32AQI
32AQI
1st October 2025
39AQI
39AQI
2nd October 2025
24AQI
24AQI
3rd October 2025
30AQI
30AQI
4th October 2025
47AQI
47AQI
5th October 2025
44AQI
44AQI
6th October 2025
51AQI
51AQI
7th October 2025
53AQI
53AQI
8th October 2025
52AQI
52AQI
9th October 2025
50AQI
50AQI
10th October 2025
45AQI
45AQI
11th October 2025
49AQI
49AQI
12th October 2025
50AQI
50AQI
13th October 2025
52AQI
52AQI
14th October 2025
44AQI
44AQI
15th October 2025
14AQI
14AQI
16th October 2025
19AQI
19AQI
17th October 2025
33AQI
33AQI
18th October 2025
30AQI
30AQI
19th October 2025
35AQI
35AQI
20th October 2025
44AQI
44AQI
21st October 2025
40AQI
40AQI
22nd October 2025
44AQI
44AQI
23rd October 2025
25AQI
25AQI
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
38AQI
33AQI
30AQI
29AQI
39AQI
43AQI
38AQI
48AQI
30AQI
40AQI
No. of days
Jan.Feb.Mar.Apr.MayJun.Jul.Aug.Sep.Oct.Nov.Dec.Total Days
202537AQI
30
1
28
31
30
29
2
20
10
27
4
15
16
30
19
4
259
37
Highest AQI recorded in
August48AQI
Lowest AQI recorded in
April29AQI
202439AQI
31
29
31
30
27
4
21
8
22
9
31
26
4
20
11
30
30
1
328
37
Highest AQI recorded in
October47AQI
Lowest AQI recorded in
March32AQI
202362AQI
24
1
6
24
4
28
1
2
15
4
11
28
3
29
1
21
7
27
2
24
6
27
4
26
3
31
304
35
1
19
Highest AQI recorded in
April200AQI
Lowest AQI recorded in
December36AQI
2022105AQI
29
1
22
31
24
6
27
4
17
6
1
6
13
11
2
20
3
6
22
2
1
6
19
1
1
9
21
1
9
245
25
2
1
1
47
Highest AQI recorded in
July248AQI
Lowest AQI recorded in
January37AQI
202139AQI
28
28
31
27
3
30
1
28
2
29
2
21
10
23
5
30
1
29
1
31
335
25
Highest AQI recorded in
August48AQI
Lowest AQI recorded in
January33AQI
202040AQI
13
20
18
28
2
27
4
24
7
19
11
17
14
30
31
227
38
Highest AQI recorded in
September50AQI
Lowest AQI recorded in
April31AQI
Most & Least Polluted Years Over the Last 6 Years
Most Polluted Year Recorded
2022(Avg.)
105AQILeast Polluted Year Recorded
2025(Avg.)
37AQIAlpine's annual 2025 AQI (37) shows an average percentage change of -25.2% (improved AQI) compared to previous years: 2020 (40), 2021 (39), 2022 (105), 2023 (62), 2024 (39).
