Hollister, 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
Hollister, 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
15th Oct 2025
13AQISame Day Analysis (25th October ):
On this day, AQI across the 5 years varied significantly: 2025 ranks the most lowest AQI at 18 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: 25th Oct - 26th Oct 2025
Hollister, California, United States
AQI
Day
Night
.
7 AM25th Oct 2025
6 PM
6 AM26th Oct 2025
Day time
Avg. Highest Time
9AM25th Oct
27AQI
Avg. Lowest Time
3PM25th Oct
11AQI
Night time
Avg. Highest Time
7PM25th Oct
14AQI
Avg. Lowest Time
9PM25th Oct
11AQI
In the last 24 hours,
Hollister's AQI reached its highest point of 27 at 9 AM during the Day, while the lowest point, undefined, was recorded at 6 AM during the Night between 25th Oct and 26th Oct 2025.
Day & Night AQI Trend : Sep - Oct 2025
Hollister, California, United States
SepOct
26th - 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 - 25th25th - 26th26th
Day
Night
26th Sep 2025357 AMAQI
26th Sep 2025318 AMAQI
26th Sep 2025409 AMAQI
26th Sep 20253510 AMAQI
26th Sep 20253011 AMAQI
26th Sep 20252512 PMAQI
26th Sep 2025321 PMAQI
26th Sep 2025322 PMAQI
26th Sep 2025373 PMAQI
26th Sep 2025454 PMAQI
26th Sep 2025485 PMAQI
26th Sep 2025526 PMAQI
26th Sep 2025487 PMAQI
26th Sep 2025558 PMAQI
26th Sep 2025579 PMAQI
26th Sep 20255710 PMAQI
26th Sep 20255611 PMAQI
27th Sep 20255912 AMAQI
27th Sep 2025541 AMAQI
27th Sep 2025572 AMAQI
27th Sep 2025663 AMAQI
27th Sep 2025624 AMAQI
27th Sep 2025595 AMAQI
27th Sep 2025606 AMAQI
20°C15/31°C
27th Sep 2025597 AMAQI
27th Sep 2025648 AMAQI
27th Sep 2025629 AMAQI
27th Sep 20255510 AMAQI
27th Sep 20255711 AMAQI
27th Sep 20255612 PMAQI
27th Sep 2025441 PMAQI
27th Sep 2025332 PMAQI
27th Sep 2025413 PMAQI
27th Sep 2025434 PMAQI
27th Sep 2025425 PMAQI
27th Sep 2025366 PMAQI
27th Sep 2025277 PMAQI
27th Sep 2025228 PMAQI
27th Sep 2025209 PMAQI
27th Sep 20252110 PMAQI
27th Sep 20252411 PMAQI
28th Sep 20252812 AMAQI
28th Sep 2025281 AMAQI
28th Sep 2025302 AMAQI
28th Sep 2025323 AMAQI
28th Sep 2025344 AMAQI
28th Sep 2025375 AMAQI
28th Sep 2025276 AMAQI
17°C13/23°C
28th Sep 2025207 AMAQI
28th Sep 2025208 AMAQI
28th Sep 2025209 AMAQI
28th Sep 20252010 AMAQI
28th Sep 20252011 AMAQI
28th Sep 20251612 PMAQI
28th Sep 2025151 PMAQI
28th Sep 2025172 PMAQI
28th Sep 2025173 PMAQI
28th Sep 2025194 PMAQI
28th Sep 2025235 PMAQI
28th Sep 2025216 PMAQI
28th Sep 2025127 PMAQI
28th Sep 2025178 PMAQI
28th Sep 2025199 PMAQI
28th Sep 20252210 PMAQI
28th Sep 20251611 PMAQI
29th Sep 20252612 AMAQI
29th Sep 2025301 AMAQI
29th Sep 2025262 AMAQI
29th Sep 2025283 AMAQI
29th Sep 2025324 AMAQI
29th Sep 2025275 AMAQI
29th Sep 2025216 AMAQI
19°C16/25°C
29th Sep 2025357 AMAQI
29th Sep 2025288 AMAQI
29th Sep 2025199 AMAQI
29th Sep 20252010 AMAQI
29th Sep 20251411 AMAQI
29th Sep 20251712 PMAQI
29th Sep 2025161 PMAQI
29th Sep 2025192 PMAQI
29th Sep 2025233 PMAQI
29th Sep 2025214 PMAQI
29th Sep 2025275 PMAQI
29th Sep 2025226 PMAQI
29th Sep 2025237 PMAQI
29th Sep 2025298 PMAQI
29th Sep 2025279 PMAQI
29th Sep 20252810 PMAQI
29th Sep 20253411 PMAQI
30th Sep 20253212 AMAQI
30th Sep 2025381 AMAQI
30th Sep 2025352 AMAQI
30th Sep 2025343 AMAQI
30th Sep 2025424 AMAQI
30th Sep 2025345 AMAQI
30th Sep 2025306 AMAQI
18°C16/23°C
30th Sep 2025407 AMAQI
30th Sep 2025338 AMAQI
30th Sep 2025289 AMAQI
30th Sep 20253510 AMAQI
30th Sep 20252811 AMAQI
30th Sep 20252912 PMAQI
30th Sep 2025241 PMAQI
30th Sep 2025252 PMAQI
30th Sep 2025263 PMAQI
30th Sep 2025184 PMAQI
30th Sep 2025205 PMAQI
30th Sep 2025196 PMAQI
30th Sep 2025167 PMAQI
30th Sep 2025138 PMAQI
30th Sep 2025159 PMAQI
30th Sep 20251210 PMAQI
30th Sep 20251211 PMAQI
1st Oct 20251112 AMAQI
1st Oct 2025111 AMAQI
1st Oct 2025112 AMAQI
1st Oct 2025143 AMAQI
1st Oct 2025204 AMAQI
1st Oct 2025185 AMAQI
1st Oct 2025196 AMAQI
19°C14/25°C
1st Oct 2025147 AMAQI
1st Oct 202598 AMAQI
1st Oct 2025269 AMAQI
1st Oct 20253910 AMAQI
1st Oct 20252111 AMAQI
1st Oct 2025712 PMAQI
1st Oct 202571 PMAQI
1st Oct 202582 PMAQI
1st Oct 202563 PMAQI
1st Oct 202594 PMAQI
1st Oct 2025105 PMAQI
1st Oct 2025106 PMAQI
1st Oct 2025127 PMAQI
1st Oct 2025208 PMAQI
1st Oct 2025149 PMAQI
1st Oct 20251810 PMAQI
1st Oct 20251711 PMAQI
2nd Oct 20251712 AMAQI
2nd Oct 2025141 AMAQI
2nd Oct 2025112 AMAQI
2nd Oct 2025103 AMAQI
2nd Oct 2025104 AMAQI
2nd Oct 2025175 AMAQI
2nd Oct 2025146 AMAQI
20°C14/29°C
2nd Oct 202567 AMAQI
2nd Oct 202568 AMAQI
2nd Oct 202589 AMAQI
2nd Oct 2025810 AMAQI
2nd Oct 20251011 AMAQI
2nd Oct 20251512 PMAQI
2nd Oct 2025111 PMAQI
2nd Oct 2025112 PMAQI
2nd Oct 202593 PMAQI
2nd Oct 202594 PMAQI
2nd Oct 202595 PMAQI
2nd Oct 2025176 PMAQI
2nd Oct 2025277 PMAQI
2nd Oct 2025308 PMAQI
2nd Oct 2025419 PMAQI
2nd Oct 20254310 PMAQI
2nd Oct 20253411 PMAQI
3rd Oct 20252612 AMAQI
3rd Oct 2025221 AMAQI
3rd Oct 2025162 AMAQI
3rd Oct 2025173 AMAQI
3rd Oct 2025174 AMAQI
3rd Oct 2025205 AMAQI
3rd Oct 2025246 AMAQI
18°C14/21°C
3rd Oct 2025217 AMAQI
3rd Oct 2025228 AMAQI
3rd Oct 2025289 AMAQI
3rd Oct 20253610 AMAQI
3rd Oct 20254411 AMAQI
3rd Oct 20253712 PMAQI
3rd Oct 2025361 PMAQI
3rd Oct 2025302 PMAQI
3rd Oct 2025473 PMAQI
3rd Oct 2025364 PMAQI
3rd Oct 2025265 PMAQI
3rd Oct 2025326 PMAQI
3rd Oct 2025297 PMAQI
3rd Oct 2025308 PMAQI
3rd Oct 2025359 PMAQI
3rd Oct 20252910 PMAQI
3rd Oct 20252411 PMAQI
4th Oct 20253612 AMAQI
4th Oct 2025401 AMAQI
4th Oct 2025382 AMAQI
4th Oct 2025323 AMAQI
4th Oct 2025184 AMAQI
4th Oct 2025305 AMAQI
4th Oct 2025316 AMAQI
17°C14/22°C
4th Oct 2025327 AMAQI
4th Oct 2025248 AMAQI
4th Oct 2025249 AMAQI
4th Oct 20252810 AMAQI
4th Oct 20253411 AMAQI
4th Oct 20254712 PMAQI
4th Oct 2025441 PMAQI
4th Oct 2025402 PMAQI
4th Oct 2025473 PMAQI
4th Oct 2025424 PMAQI
4th Oct 2025425 PMAQI
4th Oct 2025426 PMAQI
4th Oct 2025367 PMAQI
4th Oct 2025448 PMAQI
4th Oct 2025479 PMAQI
4th Oct 20254610 PMAQI
4th Oct 20254511 PMAQI
5th Oct 20254512 AMAQI
5th Oct 2025461 AMAQI
5th Oct 2025282 AMAQI
5th Oct 2025333 AMAQI
5th Oct 2025354 AMAQI
5th Oct 2025375 AMAQI
5th Oct 2025356 AMAQI
16°C10/26°C
5th Oct 2025287 AMAQI
5th Oct 2025308 AMAQI
5th Oct 2025279 AMAQI
5th Oct 20252610 AMAQI
5th Oct 20252811 AMAQI
5th Oct 20252212 PMAQI
5th Oct 2025361 PMAQI
5th Oct 2025392 PMAQI
5th Oct 2025373 PMAQI
5th Oct 2025344 PMAQI
5th Oct 2025425 PMAQI
5th Oct 2025406 PMAQI
5th Oct 2025387 PMAQI
5th Oct 2025458 PMAQI
5th Oct 2025379 PMAQI
5th Oct 20254210 PMAQI
5th Oct 20252711 PMAQI
6th Oct 20251612 AMAQI
6th Oct 2025411 AMAQI
6th Oct 2025302 AMAQI
6th Oct 2025303 AMAQI
6th Oct 2025244 AMAQI
6th Oct 2025245 AMAQI
6th Oct 2025206 AMAQI
18°C10/29°C
6th Oct 202587 AMAQI
6th Oct 2025238 AMAQI
6th Oct 2025289 AMAQI
6th Oct 20252010 AMAQI
7th Oct 2025154 AMAQI
7th Oct 2025125 AMAQI
7th Oct 2025206 AMAQI
19°C12/31°C
7th Oct 2025217 AMAQI
7th Oct 2025228 AMAQI
7th Oct 2025249 AMAQI
7th Oct 20253010 AMAQI
7th Oct 20253411 AMAQI
7th Oct 20254812 PMAQI
7th Oct 2025401 PMAQI
7th Oct 2025402 PMAQI
7th Oct 2025493 PMAQI
7th Oct 2025544 PMAQI
7th Oct 2025505 PMAQI
7th Oct 2025336 PMAQI
7th Oct 2025177 PMAQI
7th Oct 2025448 PMAQI
7th Oct 2025449 PMAQI
7th Oct 20254510 PMAQI
7th Oct 20252011 PMAQI
8th Oct 20251312 AMAQI
8th Oct 2025181 AMAQI
8th Oct 2025392 AMAQI
8th Oct 2025123 AMAQI
8th Oct 2025194 AMAQI
8th Oct 2025175 AMAQI
8th Oct 2025126 AMAQI
18°C11/30°C
8th Oct 2025137 AMAQI
8th Oct 2025228 AMAQI
8th Oct 2025389 AMAQI
8th Oct 20254210 AMAQI
8th Oct 20255011 AMAQI
8th Oct 20254812 PMAQI
8th Oct 2025491 PMAQI
8th Oct 2025452 PMAQI
8th Oct 2025463 PMAQI
8th Oct 2025474 PMAQI
8th Oct 2025405 PMAQI
8th Oct 2025536 PMAQI
8th Oct 2025507 PMAQI
8th Oct 2025518 PMAQI
8th Oct 2025319 PMAQI
8th Oct 20252010 PMAQI
8th Oct 20252011 PMAQI
9th Oct 20251512 AMAQI
9th Oct 2025121 AMAQI
9th Oct 2025392 AMAQI
9th Oct 2025123 AMAQI
9th Oct 2025254 AMAQI
9th Oct 2025405 AMAQI
9th Oct 2025146 AMAQI
17°C12/22°C
9th Oct 2025107 AMAQI
9th Oct 2025138 AMAQI
9th Oct 2025109 AMAQI
9th Oct 20251610 AMAQI
9th Oct 20251811 AMAQI
9th Oct 20252312 PMAQI
9th Oct 2025231 PMAQI
9th Oct 2025312 PMAQI
9th Oct 2025523 PMAQI
9th Oct 2025524 PMAQI
9th Oct 2025405 PMAQI
9th Oct 2025406 PMAQI
9th Oct 2025327 PMAQI
9th Oct 2025188 PMAQI
9th Oct 2025179 PMAQI
9th Oct 20251310 PMAQI
9th Oct 20251511 PMAQI
10th Oct 20251612 AMAQI
10th Oct 2025111 AMAQI
10th Oct 2025142 AMAQI
10th Oct 2025143 AMAQI
10th Oct 2025114 AMAQI
10th Oct 2025285 AMAQI
10th Oct 2025496 AMAQI
17°C10/24°C
10th Oct 2025267 AMAQI
10th Oct 2025118 AMAQI
10th Oct 2025109 AMAQI
10th Oct 20253710 AMAQI
10th Oct 20255011 AMAQI
10th Oct 20254812 PMAQI
10th Oct 2025501 PMAQI
10th Oct 2025532 PMAQI
10th Oct 2025503 PMAQI
10th Oct 2025384 PMAQI
10th Oct 2025135 PMAQI
10th Oct 2025146 PMAQI
10th Oct 2025217 PMAQI
10th Oct 2025388 PMAQI
10th Oct 2025419 PMAQI
10th Oct 20253410 PMAQI
10th Oct 20252411 PMAQI
11th Oct 20252712 AMAQI
11th Oct 2025461 AMAQI
11th Oct 2025562 AMAQI
11th Oct 2025523 AMAQI
11th Oct 2025444 AMAQI
11th Oct 2025435 AMAQI
11th Oct 2025456 AMAQI
17°C12/24°C
11th Oct 2025337 AMAQI
11th Oct 2025118 AMAQI
11th Oct 2025169 AMAQI
11th Oct 20251710 AMAQI
11th Oct 20251511 AMAQI
11th Oct 20251512 PMAQI
11th Oct 2025161 PMAQI
11th Oct 2025212 PMAQI
11th Oct 2025343 PMAQI
11th Oct 2025514 PMAQI
11th Oct 2025405 PMAQI
11th Oct 2025366 PMAQI
11th Oct 2025267 PMAQI
11th Oct 2025298 PMAQI
11th Oct 2025339 PMAQI
11th Oct 20254710 PMAQI
11th Oct 20253111 PMAQI
12th Oct 20252312 AMAQI
12th Oct 2025281 AMAQI
12th Oct 2025472 AMAQI
12th Oct 2025463 AMAQI
12th Oct 2025244 AMAQI
12th Oct 2025395 AMAQI
12th Oct 2025336 AMAQI
17°C12/24°C
12th Oct 2025447 AMAQI
12th Oct 2025378 AMAQI
12th Oct 2025169 AMAQI
12th Oct 20251910 AMAQI
12th Oct 20252711 AMAQI
12th Oct 20252512 PMAQI
12th Oct 2025431 PMAQI
12th Oct 2025512 PMAQI
12th Oct 2025453 PMAQI
12th Oct 2025304 PMAQI
12th Oct 2025275 PMAQI
12th Oct 2025296 PMAQI
12th Oct 2025267 PMAQI
12th Oct 2025328 PMAQI
12th Oct 2025509 PMAQI
12th Oct 20255610 PMAQI
12th Oct 20255311 PMAQI
13th Oct 20255112 AMAQI
13th Oct 2025491 AMAQI
13th Oct 2025552 AMAQI
13th Oct 2025553 AMAQI
13th Oct 2025584 AMAQI
13th Oct 2025545 AMAQI
13th Oct 2025436 AMAQI
16°C9/25°C
13th Oct 2025497 AMAQI
13th Oct 2025418 AMAQI
13th Oct 2025109 AMAQI
13th Oct 2025810 AMAQI
13th Oct 20252411 AMAQI
13th Oct 20254012 PMAQI
13th Oct 2025311 PMAQI
13th Oct 2025142 PMAQI
13th Oct 2025203 PMAQI
13th Oct 2025224 PMAQI
13th Oct 202595 PMAQI
13th Oct 202586 PMAQI
13th Oct 2025157 PMAQI
13th Oct 2025258 PMAQI
13th Oct 2025289 PMAQI
13th Oct 20252510 PMAQI
13th Oct 20252611 PMAQI
14th Oct 20252812 AMAQI
14th Oct 2025271 AMAQI
14th Oct 2025252 AMAQI
14th Oct 2025273 AMAQI
14th Oct 2025264 AMAQI
14th Oct 2025275 AMAQI
14th Oct 2025256 AMAQI
14°C11/20°C
14th Oct 2025277 AMAQI
14th Oct 2025268 AMAQI
14th Oct 2025189 AMAQI
14th Oct 20251510 AMAQI
14th Oct 20252011 AMAQI
14th Oct 20252212 PMAQI
14th Oct 2025211 PMAQI
14th Oct 2025172 PMAQI
14th Oct 2025303 PMAQI
14th Oct 2025304 PMAQI
14th Oct 2025295 PMAQI
14th Oct 2025296 PMAQI
14th Oct 2025397 PMAQI
14th Oct 2025208 PMAQI
14th Oct 2025199 PMAQI
14th Oct 2025610 PMAQI
14th Oct 2025711 PMAQI
15th Oct 2025712 AMAQI
15th Oct 202571 AMAQI
15th Oct 202572 AMAQI
15th Oct 202563 AMAQI
15th Oct 202574 AMAQI
15th Oct 202575 AMAQI
15th Oct 202576 AMAQI
12°C9/16°C
15th Oct 202587 AMAQI
15th Oct 2025118 AMAQI
15th Oct 2025139 AMAQI
15th Oct 2025810 AMAQI
15th Oct 20251811 AMAQI
15th Oct 20252612 PMAQI
15th Oct 2025121 PMAQI
15th Oct 2025142 PMAQI
15th Oct 2025153 PMAQI
15th Oct 2025104 PMAQI
15th Oct 2025155 PMAQI
15th Oct 2025126 PMAQI
15th Oct 202577 PMAQI
15th Oct 2025108 PMAQI
15th Oct 2025399 PMAQI
15th Oct 20254310 PMAQI
15th Oct 20252311 PMAQI
16th Oct 20253812 AMAQI
16th Oct 2025451 AMAQI
16th Oct 2025452 AMAQI
16th Oct 2025443 AMAQI
16th Oct 2025474 AMAQI
16th Oct 202585 AMAQI
16th Oct 202596 AMAQI
13°C10/18°C
16th Oct 202577 AMAQI
16th Oct 2025108 AMAQI
16th Oct 2025129 AMAQI
16th Oct 20252510 AMAQI
16th Oct 20253911 AMAQI
16th Oct 20253912 PMAQI
16th Oct 2025471 PMAQI
16th Oct 2025192 PMAQI
16th Oct 2025193 PMAQI
16th Oct 2025194 PMAQI
16th Oct 202585 PMAQI
16th Oct 2025136 PMAQI
16th Oct 2025137 PMAQI
16th Oct 2025108 PMAQI
16th Oct 2025109 PMAQI
16th Oct 20252610 PMAQI
16th Oct 20254411 PMAQI
17th Oct 20254612 AMAQI
17th Oct 2025171 AMAQI
17th Oct 2025192 AMAQI
17th Oct 2025123 AMAQI
17th Oct 202594 AMAQI
17th Oct 202595 AMAQI
17th Oct 2025106 AMAQI
15°C9/22°C
17th Oct 2025117 AMAQI
17th Oct 2025108 AMAQI
17th Oct 2025139 AMAQI
17th Oct 20252510 AMAQI
17th Oct 20252011 AMAQI
17th Oct 20251612 PMAQI
17th Oct 2025141 PMAQI
17th Oct 2025112 PMAQI
17th Oct 202593 PMAQI
17th Oct 202594 PMAQI
17th Oct 202585 PMAQI
17th Oct 2025106 PMAQI
17th Oct 2025127 PMAQI
17th Oct 2025118 PMAQI
17th Oct 2025339 PMAQI
17th Oct 20255510 PMAQI
17th Oct 20255511 PMAQI
18th Oct 20255012 AMAQI
18th Oct 2025471 AMAQI
18th Oct 2025442 AMAQI
18th Oct 2025323 AMAQI
18th Oct 2025184 AMAQI
18th Oct 2025285 AMAQI
18th Oct 2025346 AMAQI
17°C8/27°C
18th Oct 2025277 AMAQI
18th Oct 2025388 AMAQI
18th Oct 2025359 AMAQI
18th Oct 20252910 AMAQI
18th Oct 20252911 AMAQI
18th Oct 20252312 PMAQI
18th Oct 2025161 PMAQI
18th Oct 2025152 PMAQI
18th Oct 2025133 PMAQI
18th Oct 2025274 PMAQI
18th Oct 2025175 PMAQI
18th Oct 2025176 PMAQI
18th Oct 202597 PMAQI
18th Oct 2025108 PMAQI
18th Oct 2025329 PMAQI
18th Oct 20253610 PMAQI
18th Oct 20253811 PMAQI
19th Oct 20254212 AMAQI
19th Oct 2025351 AMAQI
19th Oct 202592 AMAQI
19th Oct 2025293 AMAQI
19th Oct 2025274 AMAQI
19th Oct 202585 AMAQI
19th Oct 2025116 AMAQI
19°C10/30°C
19th Oct 2025107 AMAQI
19th Oct 2025138 AMAQI
19th Oct 2025489 AMAQI
19th Oct 20255510 AMAQI
19th Oct 20255511 AMAQI
19th Oct 20255312 PMAQI
19th Oct 2025521 PMAQI
19th Oct 2025542 PMAQI
19th Oct 2025553 PMAQI
19th Oct 2025544 PMAQI
19th Oct 2025525 PMAQI
19th Oct 2025386 PMAQI
19th Oct 2025127 PMAQI
19th Oct 202598 PMAQI
19th Oct 202599 PMAQI
19th Oct 20251010 PMAQI
19th Oct 20253411 PMAQI
20th Oct 20255612 AMAQI
20th Oct 2025371 AMAQI
20th Oct 2025362 AMAQI
20th Oct 2025533 AMAQI
20th Oct 2025534 AMAQI
20th Oct 2025545 AMAQI
20th Oct 2025566 AMAQI
16°C9/28°C
20th Oct 2025327 AMAQI
20th Oct 2025108 AMAQI
20th Oct 2025139 AMAQI
20th Oct 20253410 AMAQI
20th Oct 20253711 AMAQI
20th Oct 20253812 PMAQI
20th Oct 2025591 PMAQI
20th Oct 2025362 PMAQI
20th Oct 2025273 PMAQI
20th Oct 2025184 PMAQI
20th Oct 2025215 PMAQI
20th Oct 2025196 PMAQI
20th Oct 2025237 PMAQI
20th Oct 2025308 PMAQI
20th Oct 2025359 PMAQI
20th Oct 20251410 PMAQI
20th Oct 20253511 PMAQI
21st Oct 20255512 AMAQI
21st Oct 2025521 AMAQI
21st Oct 2025552 AMAQI
21st Oct 2025603 AMAQI
21st Oct 2025614 AMAQI
21st Oct 2025535 AMAQI
21st Oct 2025556 AMAQI
18°C9/30°C
21st Oct 2025217 AMAQI
21st Oct 2025178 AMAQI
21st Oct 2025179 AMAQI
21st Oct 20252210 AMAQI
21st Oct 20252811 AMAQI
21st Oct 20252412 PMAQI
21st Oct 2025201 PMAQI
21st Oct 2025192 PMAQI
21st Oct 2025183 PMAQI
21st Oct 2025194 PMAQI
21st Oct 2025255 PMAQI
21st Oct 2025366 PMAQI
21st Oct 2025417 PMAQI
21st Oct 2025498 PMAQI
21st Oct 2025539 PMAQI
21st Oct 20254710 PMAQI
21st Oct 20254211 PMAQI
22nd Oct 20254412 AMAQI
22nd Oct 2025421 AMAQI
22nd Oct 2025362 AMAQI
22nd Oct 2025393 AMAQI
22nd Oct 2025414 AMAQI
22nd Oct 2025385 AMAQI
22nd Oct 2025336 AMAQI
16°C10/25°C
22nd Oct 2025337 AMAQI
22nd Oct 2025318 AMAQI
22nd Oct 2025339 AMAQI
22nd Oct 20253910 AMAQI
22nd Oct 20252411 AMAQI
22nd Oct 20251312 PMAQI
22nd Oct 2025201 PMAQI
22nd Oct 2025282 PMAQI
22nd Oct 2025223 PMAQI
22nd Oct 2025204 PMAQI
22nd Oct 2025165 PMAQI
22nd Oct 2025226 PMAQI
22nd Oct 2025287 PMAQI
22nd Oct 2025288 PMAQI
22nd Oct 2025309 PMAQI
22nd Oct 20253310 PMAQI
22nd Oct 20253911 PMAQI
23rd Oct 20253612 AMAQI
23rd Oct 2025291 AMAQI
23rd Oct 2025202 AMAQI
23rd Oct 2025193 AMAQI
23rd Oct 2025224 AMAQI
23rd Oct 2025225 AMAQI
23rd Oct 2025206 AMAQI
16°C13/20°C
23rd Oct 2025177 AMAQI
23rd Oct 2025208 AMAQI
23rd Oct 2025249 AMAQI
23rd Oct 20253910 AMAQI
23rd Oct 20255211 AMAQI
23rd Oct 20254812 PMAQI
23rd Oct 2025441 PMAQI
23rd Oct 2025442 PMAQI
23rd Oct 2025303 PMAQI
23rd Oct 2025344 PMAQI
23rd Oct 2025395 PMAQI
23rd Oct 2025306 PMAQI
23rd Oct 2025287 PMAQI
23rd Oct 2025268 PMAQI
23rd Oct 2025369 PMAQI
23rd Oct 20254210 PMAQI
23rd Oct 20254711 PMAQI
24th Oct 20254712 AMAQI
24th Oct 2025381 AMAQI
24th Oct 2025242 AMAQI
24th Oct 2025163 AMAQI
24th Oct 2025124 AMAQI
24th Oct 2025175 AMAQI
24th Oct 2025286 AMAQI
16°C10/26°C
24th Oct 2025307 AMAQI
24th Oct 2025228 AMAQI
24th Oct 2025289 AMAQI
24th Oct 20253010 AMAQI
24th Oct 20252211 AMAQI
24th Oct 20252512 PMAQI
24th Oct 2025341 PMAQI
24th Oct 2025442 PMAQI
24th Oct 2025473 PMAQI
24th Oct 2025884 PMAQI
24th Oct 20251345 PMAQI
24th Oct 2025896 PMAQI
24th Oct 2025447 PMAQI
24th Oct 2025258 PMAQI
24th Oct 2025129 PMAQI
24th Oct 20251710 PMAQI
24th Oct 20252011 PMAQI
25th Oct 20252012 AMAQI
25th Oct 2025151 AMAQI
25th Oct 2025182 AMAQI
25th Oct 2025213 AMAQI
25th Oct 2025184 AMAQI
25th Oct 2025165 AMAQI
25th Oct 2025226 AMAQI
14°C8/24°C
25th Oct 2025187 AMAQI
25th Oct 2025208 AMAQI
25th Oct 2025279 AMAQI
25th Oct 20251710 AMAQI
25th Oct 20251411 AMAQI
25th Oct 20251612 PMAQI
25th Oct 2025221 PMAQI
25th Oct 2025162 PMAQI
25th Oct 2025113 PMAQI
25th Oct 2025124 PMAQI
25th Oct 2025125 PMAQI
25th Oct 2025146 PMAQI
25th Oct 2025147 PMAQI
25th Oct 2025118 PMAQI
25th Oct 2025119 PMAQI
25th Oct 20251210 PMAQI
25th Oct 20251311 PMAQI
14°C10/20°C
7 AM
12 PM
6 PM
12 AM
6 AM
--°C/°C
Day time
Avg. Highest Time
4 PM
31AQI
1 hours / Day
30 hours / Month
Avg. Lowest Time
8 AM
23AQI
1 hours / Day
30 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 4 PM to 4 PM (Avg. 31), while the lowest AQI was between 8 AM to 8 AM (Avg. 23).
Night time
Avg. Highest Time
12 AM
33AQI
1 hours / Day
30 hours / Month
Avg. Lowest Time
7 PM
25AQI
1 hours / Day
30 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 12 AM to 12 AM (Avg. 33), while the lowest AQI was between 7 PM to 7 PM (Avg. 25).
2025 Days Vs Air Quality
Hollister, California, United States
2025
99%
296
0.6%
2
Total number of days with different AQI categories in last 299 days in 2025 (66 days remaining)
Good
296 DaysModerate
2 DaysPoor
0 DaysUnhealthy
0 DaysSevere
0 DaysHazardous
0 DaysUnder WHO’s Safe Air Quality Limits: 99%
Health Risk Level:
Very Low
In 2025, 99% of 299 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
Hollister, 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
33AQI
33AQI
2nd January 2025
28AQI
28AQI
3rd January 2025
27AQI
27AQI
4th January 2025
23AQI
23AQI
5th January 2025
24AQI
24AQI
6th January 2025
23AQI
23AQI
7th January 2025
26AQI
26AQI
8th January 2025
25AQI
25AQI
9th January 2025
25AQI
25AQI
10th January 2025
34AQI
34AQI
11th January 2025
36AQI
36AQI
12th January 2025
34AQI
34AQI
13th January 2025
31AQI
31AQI
14th January 2025
26AQI
26AQI
15th January 2025
28AQI
28AQI
16th January 2025
35AQI
35AQI
17th January 2025
44AQI
44AQI
18th January 2025
49AQI
49AQI
19th January 2025
41AQI
41AQI
20th January 2025
42AQI
42AQI
21st January 2025
30AQI
30AQI
22nd January 2025
38AQI
38AQI
23rd January 2025
35AQI
35AQI
24th January 2025
37AQI
37AQI
25th January 2025
38AQI
38AQI
26th January 2025
25AQI
25AQI
27th January 2025
25AQI
25AQI
28th January 2025
28AQI
28AQI
29th January 2025
30AQI
30AQI
30th January 2025
33AQI
33AQI
31st January 2025
37AQI
37AQI
1st February 2025
35AQI
35AQI
2nd February 2025
24AQI
24AQI
3rd February 2025
21AQI
21AQI
4th February 2025
23AQI
23AQI
5th February 2025
26AQI
26AQI
6th February 2025
23AQI
23AQI
7th February 2025
26AQI
26AQI
8th February 2025
23AQI
23AQI
9th February 2025
22AQI
22AQI
10th February 2025
22AQI
22AQI
11th February 2025
25AQI
25AQI
12th February 2025
24AQI
24AQI
13th February 2025
25AQI
25AQI
14th February 2025
33AQI
33AQI
15th February 2025
32AQI
32AQI
16th February 2025
25AQI
25AQI
17th February 2025
26AQI
26AQI
18th February 2025
24AQI
24AQI
19th February 2025
23AQI
23AQI
20th February 2025
27AQI
27AQI
21st February 2025
21AQI
21AQI
22nd February 2025
26AQI
26AQI
23rd February 2025
24AQI
24AQI
24th February 2025
24AQI
24AQI
25th February 2025
24AQI
24AQI
26th February 2025
27AQI
27AQI
27th February 2025
26AQI
26AQI
28th February 2025
31AQI
31AQI
1st March 2025
29AQI
29AQI
2nd March 2025
29AQI
29AQI
3rd March 2025
22AQI
22AQI
4th March 2025
22AQI
22AQI
5th March 2025
23AQI
23AQI
6th March 2025
28AQI
28AQI
7th March 2025
22AQI
22AQI
8th March 2025
25AQI
25AQI
9th March 2025
25AQI
25AQI
10th March 2025
25AQI
25AQI
11th March 2025
27AQI
27AQI
12th March 2025
28AQI
28AQI
13th March 2025
22AQI
22AQI
14th March 2025
20AQI
20AQI
15th March 2025
39AQI
39AQI
16th March 2025
36AQI
36AQI
17th March 2025
19AQI
19AQI
18th March 2025
17AQI
17AQI
19th March 2025
17AQI
17AQI
20th March 2025
17AQI
17AQI
21st March 2025
19AQI
19AQI
22nd March 2025
21AQI
21AQI
23rd March 2025
22AQI
22AQI
24th March 2025
19AQI
19AQI
25th March 2025
23AQI
23AQI
26th March 2025
20AQI
20AQI
27th March 2025
18AQI
18AQI
28th March 2025
23AQI
23AQI
29th March 2025
17AQI
17AQI
30th March 2025
16AQI
16AQI
31st March 2025
20AQI
20AQI
1st April 2025
17AQI
17AQI
2nd April 2025
22AQI
22AQI
3rd April 2025
18AQI
18AQI
4th April 2025
20AQI
20AQI
5th April 2025
23AQI
23AQI
6th April 2025
17AQI
17AQI
7th April 2025
14AQI
14AQI
8th April 2025
17AQI
17AQI
9th April 2025
17AQI
17AQI
10th April 2025
24AQI
24AQI
11th April 2025
24AQI
24AQI
12th April 2025
33AQI
33AQI
13th April 2025
34AQI
34AQI
14th April 2025
32AQI
32AQI
15th April 2025
24AQI
24AQI
16th April 2025
30AQI
30AQI
17th April 2025
25AQI
25AQI
18th April 2025
24AQI
24AQI
19th April 2025
27AQI
27AQI
20th April 2025
25AQI
25AQI
21st April 2025
24AQI
24AQI
22nd April 2025
29AQI
29AQI
23rd April 2025
39AQI
39AQI
24th April 2025
32AQI
32AQI
25th April 2025
20AQI
20AQI
26th April 2025
14AQI
14AQI
27th April 2025
17AQI
17AQI
28th April 2025
27AQI
27AQI
29th April 2025
31AQI
31AQI
30th April 2025
28AQI
28AQI
1st May 2025
27AQI
27AQI
2nd May 2025
26AQI
26AQI
3rd May 2025
22AQI
22AQI
4th May 2025
38AQI
38AQI
5th May 2025
33AQI
33AQI
6th May 2025
46AQI
46AQI
7th May 2025
43AQI
43AQI
8th May 2025
36AQI
36AQI
9th May 2025
30AQI
30AQI
10th May 2025
32AQI
32AQI
11th May 2025
28AQI
28AQI
12th May 2025
18AQI
18AQI
13th May 2025
17AQI
17AQI
14th May 2025
25AQI
25AQI
15th May 2025
32AQI
32AQI
16th May 2025
41AQI
41AQI
17th May 2025
27AQI
27AQI
18th May 2025
25AQI
25AQI
19th May 2025
38AQI
38AQI
20th May 2025
27AQI
27AQI
21st May 2025
34AQI
34AQI
22nd May 2025
35AQI
35AQI
23rd May 2025
30AQI
30AQI
24th May 2025
27AQI
27AQI
25th May 2025
25AQI
25AQI
26th May 2025
20AQI
20AQI
27th May 2025
21AQI
21AQI
28th May 2025
29AQI
29AQI
29th May 2025
21AQI
21AQI
30th May 2025
30AQI
30AQI
31st May 2025
43AQI
43AQI
1st June 2025
47AQI
47AQI
2nd June 2025
51AQI
51AQI
3rd June 2025
32AQI
32AQI
4th June 2025
40AQI
40AQI
5th June 2025
37AQI
37AQI
6th June 2025
24AQI
24AQI
7th June 2025
27AQI
27AQI
8th June 2025
21AQI
21AQI
9th June 2025
19AQI
19AQI
10th June 2025
24AQI
24AQI
11th June 2025
34AQI
34AQI
12th June 2025
46AQI
46AQI
13th June 2025
47AQI
47AQI
14th June 2025
42AQI
42AQI
15th June 2025
38AQI
38AQI
16th June 2025
43AQI
43AQI
17th June 2025
34AQI
34AQI
18th June 2025
32AQI
32AQI
19th June 2025
43AQI
43AQI
20th June 2025
41AQI
41AQI
21st June 2025
28AQI
28AQI
22nd June 2025
25AQI
25AQI
23rd June 2025
31AQI
31AQI
24th June 2025
24AQI
24AQI
25th June 2025
25AQI
25AQI
26th June 2025
27AQI
27AQI
27th June 2025
30AQI
30AQI
28th June 2025
30AQI
30AQI
29th June 2025
28AQI
28AQI
30th June 2025
23AQI
23AQI
1st July 2025
25AQI
25AQI
2nd July 2025
23AQI
23AQI
3rd July 2025
34AQI
34AQI
4th July 2025
30AQI
30AQI
5th July 2025
44AQI
44AQI
6th July 2025
33AQI
33AQI
7th July 2025
27AQI
27AQI
8th July 2025
22AQI
22AQI
9th July 2025
21AQI
21AQI
10th July 2025
25AQI
25AQI
11th July 2025
30AQI
30AQI
12th July 2025
34AQI
34AQI
13th July 2025
29AQI
29AQI
14th July 2025
24AQI
24AQI
15th July 2025
21AQI
21AQI
16th July 2025
19AQI
19AQI
17th July 2025
21AQI
21AQI
18th July 2025
19AQI
19AQI
19th July 2025
23AQI
23AQI
20th July 2025
24AQI
24AQI
21st July 2025
21AQI
21AQI
22nd July 2025
15AQI
15AQI
23rd July 2025
15AQI
15AQI
24th July 2025
15AQI
15AQI
25th July 2025
17AQI
17AQI
26th July 2025
16AQI
16AQI
27th July 2025
17AQI
17AQI
28th July 2025
21AQI
21AQI
29th July 2025
27AQI
27AQI
30th July 2025
28AQI
28AQI
31st July 2025
25AQI
25AQI
1st August 2025
23AQI
23AQI
2nd August 2025
23AQI
23AQI
3rd August 2025
28AQI
28AQI
4th August 2025
36AQI
36AQI
5th August 2025
28AQI
28AQI
6th August 2025
31AQI
31AQI
7th August 2025
26AQI
26AQI
8th August 2025
25AQI
25AQI
9th August 2025
36AQI
36AQI
10th August 2025
28AQI
28AQI
11th August 2025
33AQI
33AQI
12th August 2025
35AQI
35AQI
13th August 2025
27AQI
27AQI
14th August 2025
22AQI
22AQI
15th August 2025
31AQI
31AQI
16th August 2025
15AQI
15AQI
17th August 2025
16AQI
16AQI
18th August 2025
21AQI
21AQI
19th August 2025
25AQI
25AQI
20th August 2025
31AQI
31AQI
21st August 2025
38AQI
38AQI
22nd August 2025
53AQI
53AQI
23rd August 2025
41AQI
41AQI
24th August 2025
43AQI
43AQI
25th August 2025
37AQI
37AQI
26th August 2025
40AQI
40AQI
27th August 2025
43AQI
43AQI
28th August 2025
40AQI
40AQI
29th August 2025
31AQI
31AQI
30th August 2025
37AQI
37AQI
31st August 2025
34AQI
34AQI
1st September 2025
31AQI
31AQI
2nd September 2025
44AQI
44AQI
3rd September 2025
36AQI
36AQI
4th September 2025
26AQI
26AQI
5th September 2025
31AQI
31AQI
6th September 2025
33AQI
33AQI
7th September 2025
24AQI
24AQI
8th September 2025
20AQI
20AQI
9th September 2025
21AQI
21AQI
10th September 2025
20AQI
20AQI
11th September 2025
26AQI
26AQI
12th September 2025
33AQI
33AQI
13th September 2025
37AQI
37AQI
14th September 2025
25AQI
25AQI
15th September 2025
22AQI
22AQI
16th September 2025
27AQI
27AQI
17th September 2025
36AQI
36AQI
18th September 2025
38AQI
38AQI
19th September 2025
37AQI
37AQI
20th September 2025
34AQI
34AQI
21st September 2025
32AQI
32AQI
22nd September 2025
34AQI
34AQI
23rd September 2025
41AQI
41AQI
24th September 2025
43AQI
43AQI
25th September 2025
35AQI
35AQI
26th September 2025
42AQI
42AQI
27th September 2025
46AQI
46AQI
28th September 2025
23AQI
23AQI
29th September 2025
25AQI
25AQI
30th September 2025
26AQI
26AQI
1st October 2025
15AQI
15AQI
2nd October 2025
17AQI
17AQI
3rd October 2025
27AQI
27AQI
4th October 2025
37AQI
37AQI
5th October 2025
35AQI
35AQI
6th October 2025
29AQI
29AQI
7th October 2025
33AQI
33AQI
8th October 2025
32AQI
32AQI
9th October 2025
23AQI
23AQI
10th October 2025
26AQI
26AQI
11th October 2025
35AQI
35AQI
12th October 2025
35AQI
35AQI
13th October 2025
33AQI
33AQI
14th October 2025
24AQI
24AQI
15th October 2025
13AQI
13AQI
16th October 2025
27AQI
27AQI
17th October 2025
20AQI
20AQI
18th October 2025
29AQI
29AQI
19th October 2025
31AQI
31AQI
20th October 2025
35AQI
35AQI
21st October 2025
41AQI
41AQI
22nd October 2025
32AQI
32AQI
23rd October 2025
31AQI
31AQI
24th October 2025
37AQI
37AQI
25th October 2025
18AQI
18AQI
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
32AQI
25AQI
23AQI
24AQI
30AQI
33AQI
24AQI
32AQI
32AQI
29AQI
No. of days
Jan.Feb.Mar.Apr.MayJun.Jul.Aug.Sep.Oct.Nov.Dec.Total Days
202528AQI
31
28
31
30
31
29
1
31
30
1
30
25
296
2
Highest AQI recorded in
June33AQI
Lowest AQI recorded in
March23AQI
202433AQI
31
29
29
30
29
2
26
3
31
31
30
31
28
2
28
3
353
10
Highest AQI recorded in
June38AQI
Lowest AQI recorded in
March26AQI
202352AQI
24
1
6
24
4
26
2
30
31
22
1
6
25
27
2
23
4
1
24
7
27
31
314
12
3
19
Highest AQI recorded in
October123AQI
Lowest AQI recorded in
December25AQI
202229AQI
29
1
22
31
17
31
30
18
2
27
2
30
1
29
31
297
4
Highest AQI recorded in
May34AQI
Lowest AQI recorded in
July25AQI
202131AQI
29
1
28
31
30
31
29
1
31
27
18
29
2
30
26
2
339
6
Highest AQI recorded in
September36AQI
Lowest AQI recorded in
November26AQI
202040AQI
13
20
19
30
29
2
21
5
4
1
13
11
4
2
15
12
2
1
28
2
30
1
218
33
10
4
Highest AQI recorded in
September66AQI
Lowest AQI recorded in
May26AQI
Most & Least Polluted Years Over the Last 6 Years
Most Polluted Year Recorded
2023(Avg.)
52AQILeast Polluted Year Recorded
2025(Avg.)
28AQIHollister's annual 2025 AQI (28) shows an average percentage change of -19.8% (improved AQI) compared to previous years: 2020 (40), 2021 (31), 2022 (29), 2023 (52), 2024 (33).
