Alta Sierra, 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+
August Air Quality Analysis
Alta Sierra, California, United States
2021
2022
2023
2024
2025
AQI
.
Days
AQI Trends: Highest and Lowest
Highest AQI recorded on
6th Aug 2021
223AQILowest AQI recorded on
24th Aug 2024
20AQISame Day Analysis (10th August ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 4th highest AQI at 33 of Good air quality, showing improvement over 2024, 2023 and 2021 on the same day.
Download 2024 Annual Data
World Air Quality Report
Day & Night AQI Trend: 10th Aug - 11th Aug 2025
Alta Sierra, California, United States
AQI
Day
Night
.
6 AM10th Aug 2025
8 PM
5 AM11th Aug 2025
Day time
Avg. Highest Time
7AM10th Aug
37AQI
Avg. Lowest Time
6PM10th Aug
31AQI
Night time
Avg. Highest Time
5AM11th Aug
43AQI
Avg. Lowest Time
3AM11th Aug
28AQI
In the last 24 hours,
Alta Sierra's AQI reached its highest point of 43 at 5 AM during the Night, while the lowest point, 28, was recorded at 3 AM during the Night between 10th Aug and 11th Aug 2025.
Day & Night AQI Trend : Jul - Aug 2025
Alta Sierra, California, United States
JulAug
12th - 13th13th - 14th14th - 15th15th - 16th16th - 17th17th - 18th18th - 19th19th - 20th20th - 21st21st - 22nd22nd - 23rd23rd - 24th24th - 25th25th - 26th26th - 27th27th - 28th28th - 29th29th - 30th30th - 31st31st - 01st01st - 02nd02nd - 03rd03rd - 04th04th - 05th05th - 06th06th - 07th07th - 08th08th - 09th09th - 10th10th - 11th11th
Day
Night
12th Jul 2025616 AMAQI
12th Jul 2025607 AMAQI
12th Jul 2025668 AMAQI
12th Jul 2025619 AMAQI
12th Jul 20256010 AMAQI
12th Jul 20256011 AMAQI
12th Jul 20255812 PMAQI
12th Jul 2025601 PMAQI
12th Jul 2025602 PMAQI
12th Jul 2025593 PMAQI
12th Jul 2025614 PMAQI
12th Jul 2025595 PMAQI
12th Jul 2025586 PMAQI
12th Jul 2025597 PMAQI
12th Jul 2025608 PMAQI
12th Jul 2025589 PMAQI
12th Jul 20255710 PMAQI
12th Jul 20255811 PMAQI
13th Jul 20255812 AMAQI
13th Jul 2025581 AMAQI
13th Jul 2025582 AMAQI
13th Jul 2025593 AMAQI
13th Jul 2025634 AMAQI
13th Jul 2025605 AMAQI
30°C24/38°C
13th Jul 2025586 AMAQI
13th Jul 2025587 AMAQI
13th Jul 2025608 AMAQI
13th Jul 2025629 AMAQI
13th Jul 20256210 AMAQI
13th Jul 20255911 AMAQI
13th Jul 20256012 PMAQI
13th Jul 2025621 PMAQI
13th Jul 2025612 PMAQI
13th Jul 2025593 PMAQI
13th Jul 2025604 PMAQI
13th Jul 2025605 PMAQI
13th Jul 2025586 PMAQI
13th Jul 2025587 PMAQI
13th Jul 2025578 PMAQI
13th Jul 2025569 PMAQI
13th Jul 20255610 PMAQI
13th Jul 20255611 PMAQI
14th Jul 20255712 AMAQI
14th Jul 2025551 AMAQI
14th Jul 2025552 AMAQI
14th Jul 2025553 AMAQI
14th Jul 2025504 AMAQI
14th Jul 2025475 AMAQI
30°C23/38°C
14th Jul 2025476 AMAQI
14th Jul 2025557 AMAQI
14th Jul 2025538 AMAQI
14th Jul 2025539 AMAQI
14th Jul 20255510 AMAQI
14th Jul 20255711 AMAQI
14th Jul 20255712 PMAQI
14th Jul 2025571 PMAQI
14th Jul 2025562 PMAQI
14th Jul 2025553 PMAQI
14th Jul 2025554 PMAQI
14th Jul 2025545 PMAQI
14th Jul 2025546 PMAQI
14th Jul 2025547 PMAQI
14th Jul 2025538 PMAQI
14th Jul 2025529 PMAQI
14th Jul 20255210 PMAQI
14th Jul 20255211 PMAQI
15th Jul 20255212 AMAQI
15th Jul 2025521 AMAQI
15th Jul 2025522 AMAQI
15th Jul 2025523 AMAQI
15th Jul 2025464 AMAQI
15th Jul 2025535 AMAQI
31°C24/38°C
15th Jul 2025486 AMAQI
15th Jul 2025477 AMAQI
15th Jul 2025448 AMAQI
15th Jul 2025419 AMAQI
15th Jul 20254010 AMAQI
15th Jul 20254211 AMAQI
15th Jul 20254312 PMAQI
15th Jul 2025421 PMAQI
15th Jul 2025462 PMAQI
15th Jul 2025503 PMAQI
15th Jul 2025484 PMAQI
15th Jul 2025485 PMAQI
15th Jul 2025506 PMAQI
15th Jul 2025477 PMAQI
15th Jul 2025488 PMAQI
15th Jul 2025499 PMAQI
15th Jul 20254610 PMAQI
15th Jul 20254711 PMAQI
16th Jul 20254912 AMAQI
16th Jul 2025471 AMAQI
16th Jul 2025482 AMAQI
16th Jul 2025423 AMAQI
16th Jul 2025284 AMAQI
16th Jul 2025285 AMAQI
28°C21/36°C
16th Jul 2025306 AMAQI
16th Jul 2025417 AMAQI
16th Jul 2025478 AMAQI
16th Jul 2025469 AMAQI
16th Jul 20254010 AMAQI
16th Jul 20254111 AMAQI
16th Jul 20254212 PMAQI
16th Jul 2025401 PMAQI
16th Jul 2025432 PMAQI
16th Jul 2025443 PMAQI
16th Jul 2025414 PMAQI
16th Jul 2025415 PMAQI
16th Jul 2025416 PMAQI
16th Jul 2025437 PMAQI
16th Jul 2025428 PMAQI
16th Jul 2025379 PMAQI
16th Jul 20253410 PMAQI
16th Jul 20253511 PMAQI
17th Jul 20253312 AMAQI
17th Jul 2025341 AMAQI
17th Jul 2025382 AMAQI
17th Jul 2025363 AMAQI
17th Jul 2025304 AMAQI
17th Jul 2025315 AMAQI
25°C19/33°C
17th Jul 2025356 AMAQI
17th Jul 2025407 AMAQI
17th Jul 2025388 AMAQI
17th Jul 2025299 AMAQI
17th Jul 20253010 AMAQI
17th Jul 20253811 AMAQI
17th Jul 20253912 PMAQI
17th Jul 2025351 PMAQI
17th Jul 2025352 PMAQI
17th Jul 2025353 PMAQI
17th Jul 2025344 PMAQI
17th Jul 2025335 PMAQI
17th Jul 2025356 PMAQI
17th Jul 2025347 PMAQI
17th Jul 2025338 PMAQI
17th Jul 2025339 PMAQI
17th Jul 20253410 PMAQI
17th Jul 20253411 PMAQI
18th Jul 20253612 AMAQI
18th Jul 2025351 AMAQI
18th Jul 2025372 AMAQI
18th Jul 2025353 AMAQI
18th Jul 2025334 AMAQI
18th Jul 2025295 AMAQI
25°C18/33°C
18th Jul 2025316 AMAQI
18th Jul 2025347 AMAQI
18th Jul 2025338 AMAQI
18th Jul 2025359 AMAQI
18th Jul 20253910 AMAQI
18th Jul 20253811 AMAQI
18th Jul 20254212 PMAQI
18th Jul 2025421 PMAQI
18th Jul 2025412 PMAQI
18th Jul 2025383 PMAQI
18th Jul 2025384 PMAQI
18th Jul 2025405 PMAQI
18th Jul 2025386 PMAQI
18th Jul 2025377 PMAQI
18th Jul 2025368 PMAQI
18th Jul 2025349 PMAQI
18th Jul 20253410 PMAQI
18th Jul 20253511 PMAQI
19th Jul 20253812 AMAQI
19th Jul 2025391 AMAQI
19th Jul 2025382 AMAQI
19th Jul 2025393 AMAQI
19th Jul 2025414 AMAQI
19th Jul 2025385 AMAQI
27°C19/35°C
19th Jul 2025326 AMAQI
19th Jul 2025327 AMAQI
19th Jul 2025328 AMAQI
19th Jul 2025339 AMAQI
19th Jul 20253210 AMAQI
19th Jul 20253311 AMAQI
19th Jul 20253412 PMAQI
19th Jul 2025321 PMAQI
19th Jul 2025292 PMAQI
19th Jul 2025333 PMAQI
19th Jul 2025324 PMAQI
19th Jul 2025325 PMAQI
19th Jul 2025336 PMAQI
19th Jul 2025367 PMAQI
19th Jul 2025388 PMAQI
19th Jul 2025389 PMAQI
19th Jul 20253610 PMAQI
19th Jul 20253411 PMAQI
20th Jul 20253312 AMAQI
20th Jul 2025361 AMAQI
20th Jul 2025362 AMAQI
20th Jul 2025383 AMAQI
20th Jul 2025434 AMAQI
20th Jul 2025335 AMAQI
27°C20/36°C
20th Jul 2025266 AMAQI
20th Jul 2025267 AMAQI
20th Jul 2025278 AMAQI
20th Jul 2025319 AMAQI
20th Jul 20252910 AMAQI
20th Jul 20252811 AMAQI
20th Jul 20253012 PMAQI
20th Jul 2025321 PMAQI
20th Jul 2025322 PMAQI
20th Jul 2025353 PMAQI
20th Jul 2025354 PMAQI
20th Jul 2025365 PMAQI
20th Jul 2025346 PMAQI
20th Jul 2025327 PMAQI
20th Jul 2025338 PMAQI
20th Jul 2025349 PMAQI
20th Jul 20253010 PMAQI
20th Jul 20252911 PMAQI
21st Jul 20253012 AMAQI
21st Jul 2025321 AMAQI
21st Jul 2025352 AMAQI
21st Jul 2025343 AMAQI
21st Jul 2025314 AMAQI
21st Jul 2025275 AMAQI
27°C20/34°C
21st Jul 2025266 AMAQI
21st Jul 2025257 AMAQI
21st Jul 2025268 AMAQI
21st Jul 2025319 AMAQI
21st Jul 20253910 AMAQI
21st Jul 20254411 AMAQI
21st Jul 20254012 PMAQI
21st Jul 2025341 PMAQI
21st Jul 2025302 PMAQI
21st Jul 2025333 PMAQI
21st Jul 2025324 PMAQI
21st Jul 2025285 PMAQI
21st Jul 2025276 PMAQI
21st Jul 2025307 PMAQI
21st Jul 2025308 PMAQI
21st Jul 2025269 PMAQI
21st Jul 20252510 PMAQI
21st Jul 20252511 PMAQI
22nd Jul 20252612 AMAQI
22nd Jul 2025291 AMAQI
22nd Jul 2025322 AMAQI
22nd Jul 2025303 AMAQI
22nd Jul 2025214 AMAQI
22nd Jul 2025195 AMAQI
22°C17/29°C
22nd Jul 2025206 AMAQI
22nd Jul 2025207 AMAQI
22nd Jul 2025208 AMAQI
22nd Jul 2025209 AMAQI
22nd Jul 20252210 AMAQI
22nd Jul 20252211 AMAQI
22nd Jul 20252412 PMAQI
22nd Jul 2025301 PMAQI
22nd Jul 2025302 PMAQI
22nd Jul 2025283 PMAQI
22nd Jul 2025244 PMAQI
22nd Jul 2025225 PMAQI
22nd Jul 2025216 PMAQI
22nd Jul 2025237 PMAQI
22nd Jul 2025238 PMAQI
22nd Jul 2025229 PMAQI
22nd Jul 20252110 PMAQI
22nd Jul 20252011 PMAQI
23rd Jul 20252012 AMAQI
23rd Jul 2025221 AMAQI
23rd Jul 2025222 AMAQI
23rd Jul 2025213 AMAQI
23rd Jul 2025184 AMAQI
23rd Jul 2025175 AMAQI
21°C15/28°C
23rd Jul 2025206 AMAQI
23rd Jul 2025227 AMAQI
23rd Jul 2025168 AMAQI
23rd Jul 2025189 AMAQI
23rd Jul 20251810 AMAQI
23rd Jul 20252011 AMAQI
23rd Jul 20252312 PMAQI
23rd Jul 2025231 PMAQI
23rd Jul 2025232 PMAQI
23rd Jul 2025233 PMAQI
23rd Jul 2025224 PMAQI
23rd Jul 2025205 PMAQI
23rd Jul 2025196 PMAQI
23rd Jul 2025197 PMAQI
23rd Jul 2025208 PMAQI
23rd Jul 2025199 PMAQI
23rd Jul 20252010 PMAQI
23rd Jul 20252011 PMAQI
24th Jul 20252212 AMAQI
24th Jul 2025221 AMAQI
24th Jul 2025212 AMAQI
24th Jul 2025223 AMAQI
24th Jul 2025194 AMAQI
24th Jul 2025175 AMAQI
22°C16/30°C
24th Jul 2025156 AMAQI
24th Jul 2025177 AMAQI
24th Jul 2025198 AMAQI
24th Jul 2025249 AMAQI
24th Jul 20252010 AMAQI
24th Jul 20251811 AMAQI
24th Jul 20252212 PMAQI
24th Jul 2025281 PMAQI
24th Jul 2025292 PMAQI
24th Jul 2025243 PMAQI
24th Jul 2025234 PMAQI
24th Jul 2025215 PMAQI
24th Jul 2025216 PMAQI
24th Jul 2025217 PMAQI
24th Jul 2025238 PMAQI
24th Jul 2025229 PMAQI
24th Jul 20252210 PMAQI
24th Jul 20252211 PMAQI
25th Jul 20251912 AMAQI
25th Jul 2025181 AMAQI
25th Jul 2025182 AMAQI
25th Jul 2025203 AMAQI
25th Jul 2025264 AMAQI
25th Jul 2025265 AMAQI
23°C16/31°C
25th Jul 2025186 AMAQI
25th Jul 2025187 AMAQI
25th Jul 2025278 AMAQI
25th Jul 2025289 AMAQI
25th Jul 20252610 AMAQI
25th Jul 20253011 AMAQI
25th Jul 20252612 PMAQI
25th Jul 2025211 PMAQI
25th Jul 2025202 PMAQI
25th Jul 2025213 PMAQI
25th Jul 2025224 PMAQI
25th Jul 2025245 PMAQI
25th Jul 2025216 PMAQI
25th Jul 2025207 PMAQI
25th Jul 2025228 PMAQI
25th Jul 2025239 PMAQI
25th Jul 20252210 PMAQI
25th Jul 20252411 PMAQI
26th Jul 20252412 AMAQI
26th Jul 2025221 AMAQI
26th Jul 2025212 AMAQI
26th Jul 2025223 AMAQI
26th Jul 2025244 AMAQI
26th Jul 2025285 AMAQI
23°C17/31°C
26th Jul 2025276 AMAQI
26th Jul 2025247 AMAQI
26th Jul 2025228 AMAQI
26th Jul 2025209 AMAQI
26th Jul 20251810 AMAQI
26th Jul 20252011 AMAQI
26th Jul 20252312 PMAQI
26th Jul 2025301 PMAQI
26th Jul 2025302 PMAQI
26th Jul 2025263 PMAQI
26th Jul 2025244 PMAQI
26th Jul 2025225 PMAQI
26th Jul 2025206 PMAQI
26th Jul 2025217 PMAQI
26th Jul 2025248 PMAQI
26th Jul 2025219 PMAQI
26th Jul 20252010 PMAQI
26th Jul 20252111 PMAQI
27th Jul 20252212 AMAQI
27th Jul 2025231 AMAQI
27th Jul 2025232 AMAQI
27th Jul 2025243 AMAQI
27th Jul 2025264 AMAQI
27th Jul 2025275 AMAQI
23°C16/29°C
27th Jul 2025266 AMAQI
27th Jul 2025327 AMAQI
27th Jul 2025278 AMAQI
27th Jul 2025229 AMAQI
27th Jul 20252110 AMAQI
27th Jul 20252211 AMAQI
27th Jul 20252512 PMAQI
27th Jul 2025221 PMAQI
27th Jul 2025202 PMAQI
27th Jul 2025233 PMAQI
27th Jul 2025224 PMAQI
27th Jul 2025225 PMAQI
27th Jul 2025216 PMAQI
27th Jul 2025237 PMAQI
27th Jul 2025248 PMAQI
27th Jul 2025229 PMAQI
27th Jul 20252110 PMAQI
27th Jul 20252211 PMAQI
28th Jul 20252212 AMAQI
28th Jul 2025221 AMAQI
28th Jul 2025232 AMAQI
28th Jul 2025243 AMAQI
28th Jul 2025294 AMAQI
28th Jul 2025285 AMAQI
24°C17/31°C
28th Jul 2025236 AMAQI
28th Jul 2025287 AMAQI
28th Jul 2025338 AMAQI
28th Jul 2025299 AMAQI
28th Jul 20252610 AMAQI
28th Jul 20252411 AMAQI
28th Jul 20252212 PMAQI
28th Jul 2025221 PMAQI
28th Jul 2025222 PMAQI
28th Jul 2025253 PMAQI
28th Jul 2025324 PMAQI
28th Jul 2025265 PMAQI
28th Jul 2025246 PMAQI
28th Jul 2025247 PMAQI
28th Jul 2025248 PMAQI
28th Jul 2025229 PMAQI
28th Jul 20252210 PMAQI
28th Jul 20252211 PMAQI
29th Jul 20252312 AMAQI
29th Jul 2025251 AMAQI
29th Jul 2025262 AMAQI
29th Jul 2025263 AMAQI
29th Jul 2025254 AMAQI
29th Jul 2025215 AMAQI
26°C19/34°C
29th Jul 2025296 AMAQI
29th Jul 2025267 AMAQI
29th Jul 2025268 AMAQI
29th Jul 2025289 AMAQI
29th Jul 20252310 AMAQI
29th Jul 20252011 AMAQI
29th Jul 20252212 PMAQI
29th Jul 2025311 PMAQI
29th Jul 2025302 PMAQI
29th Jul 2025253 PMAQI
29th Jul 2025224 PMAQI
29th Jul 2025245 PMAQI
29th Jul 2025216 PMAQI
29th Jul 2025237 PMAQI
29th Jul 2025248 PMAQI
29th Jul 2025269 PMAQI
29th Jul 20252710 PMAQI
29th Jul 20252611 PMAQI
30th Jul 20252612 AMAQI
30th Jul 2025251 AMAQI
30th Jul 2025242 AMAQI
30th Jul 2025233 AMAQI
30th Jul 2025244 AMAQI
30th Jul 2025265 AMAQI
27°C20/35°C
30th Jul 2025226 AMAQI
30th Jul 2025227 AMAQI
30th Jul 2025248 AMAQI
30th Jul 2025299 AMAQI
30th Jul 20252910 AMAQI
30th Jul 20253111 AMAQI
30th Jul 20252812 PMAQI
30th Jul 2025221 PMAQI
30th Jul 2025262 PMAQI
30th Jul 2025273 PMAQI
30th Jul 2025274 PMAQI
30th Jul 2025275 PMAQI
30th Jul 2025276 PMAQI
30th Jul 2025277 PMAQI
30th Jul 2025278 PMAQI
30th Jul 2025259 PMAQI
30th Jul 20252210 PMAQI
30th Jul 20252411 PMAQI
31st Jul 20252412 AMAQI
31st Jul 2025241 AMAQI
31st Jul 2025232 AMAQI
31st Jul 2025213 AMAQI
31st Jul 2025204 AMAQI
31st Jul 2025195 AMAQI
26°C20/34°C
31st Jul 2025246 AMAQI
31st Jul 2025257 AMAQI
31st Jul 2025238 AMAQI
31st Jul 2025269 AMAQI
31st Jul 20253210 AMAQI
31st Jul 20253311 AMAQI
31st Jul 20253512 PMAQI
31st Jul 2025361 PMAQI
31st Jul 2025362 PMAQI
31st Jul 2025323 PMAQI
31st Jul 2025274 PMAQI
31st Jul 2025275 PMAQI
31st Jul 2025276 PMAQI
31st Jul 2025227 PMAQI
31st Jul 2025218 PMAQI
31st Jul 2025209 PMAQI
31st Jul 20251810 PMAQI
31st Jul 20252011 PMAQI
1st Aug 20252212 AMAQI
1st Aug 2025261 AMAQI
1st Aug 2025302 AMAQI
1st Aug 2025333 AMAQI
1st Aug 2025324 AMAQI
1st Aug 2025305 AMAQI
27°C19/35°C
1st Aug 2025286 AMAQI
1st Aug 2025267 AMAQI
1st Aug 2025308 AMAQI
1st Aug 2025299 AMAQI
1st Aug 20253210 AMAQI
1st Aug 20253211 AMAQI
1st Aug 20253012 PMAQI
1st Aug 2025291 PMAQI
1st Aug 2025302 PMAQI
1st Aug 2025263 PMAQI
1st Aug 2025244 PMAQI
1st Aug 2025235 PMAQI
1st Aug 2025256 PMAQI
1st Aug 2025267 PMAQI
1st Aug 2025258 PMAQI
1st Aug 2025259 PMAQI
1st Aug 20252410 PMAQI
1st Aug 20252611 PMAQI
2nd Aug 20252212 AMAQI
2nd Aug 2025221 AMAQI
2nd Aug 2025272 AMAQI
2nd Aug 2025303 AMAQI
2nd Aug 2025354 AMAQI
2nd Aug 2025395 AMAQI
27°C20/36°C
2nd Aug 2025416 AMAQI
2nd Aug 2025407 AMAQI
2nd Aug 2025388 AMAQI
2nd Aug 2025339 AMAQI
2nd Aug 20252810 AMAQI
2nd Aug 20252611 AMAQI
2nd Aug 20252912 PMAQI
2nd Aug 2025311 PMAQI
2nd Aug 2025292 PMAQI
2nd Aug 2025293 PMAQI
2nd Aug 2025284 PMAQI
2nd Aug 2025345 PMAQI
2nd Aug 2025386 PMAQI
2nd Aug 2025297 PMAQI
2nd Aug 2025258 PMAQI
2nd Aug 2025279 PMAQI
2nd Aug 20252610 PMAQI
2nd Aug 20252611 PMAQI
3rd Aug 20252612 AMAQI
3rd Aug 2025251 AMAQI
3rd Aug 2025272 AMAQI
3rd Aug 2025283 AMAQI
3rd Aug 2025274 AMAQI
3rd Aug 2025285 AMAQI
27°C19/35°C
3rd Aug 2025316 AMAQI
3rd Aug 2025327 AMAQI
3rd Aug 2025328 AMAQI
3rd Aug 2025319 AMAQI
3rd Aug 20253410 AMAQI
3rd Aug 20253411 AMAQI
3rd Aug 20253612 PMAQI
3rd Aug 2025371 PMAQI
3rd Aug 2025342 PMAQI
3rd Aug 2025313 PMAQI
3rd Aug 2025314 PMAQI
3rd Aug 2025305 PMAQI
3rd Aug 2025306 PMAQI
3rd Aug 2025347 PMAQI
3rd Aug 2025338 PMAQI
3rd Aug 2025349 PMAQI
3rd Aug 20254210 PMAQI
3rd Aug 20253411 PMAQI
4th Aug 20253212 AMAQI
4th Aug 2025321 AMAQI
4th Aug 2025362 AMAQI
4th Aug 2025423 AMAQI
4th Aug 2025414 AMAQI
4th Aug 2025425 AMAQI
27°C19/34°C
4th Aug 2025366 AMAQI
4th Aug 2025307 AMAQI
4th Aug 2025298 AMAQI
4th Aug 2025299 AMAQI
4th Aug 20252810 AMAQI
4th Aug 20253711 AMAQI
4th Aug 20254712 PMAQI
4th Aug 2025721 PMAQI
4th Aug 2025652 PMAQI
4th Aug 2025813 PMAQI
4th Aug 2025604 PMAQI
4th Aug 2025465 PMAQI
4th Aug 2025346 PMAQI
4th Aug 2025347 PMAQI
4th Aug 2025318 PMAQI
4th Aug 2025319 PMAQI
4th Aug 20253110 PMAQI
4th Aug 20253011 PMAQI
5th Aug 20253312 AMAQI
5th Aug 2025401 AMAQI
5th Aug 2025492 AMAQI
5th Aug 2025423 AMAQI
5th Aug 2025404 AMAQI
5th Aug 2025375 AMAQI
25°C18/31°C
5th Aug 2025336 AMAQI
5th Aug 2025327 AMAQI
5th Aug 2025308 AMAQI
5th Aug 2025319 AMAQI
5th Aug 20253310 AMAQI
5th Aug 20253411 AMAQI
5th Aug 20253512 PMAQI
5th Aug 2025291 PMAQI
5th Aug 2025302 PMAQI
5th Aug 2025283 PMAQI
5th Aug 2025304 PMAQI
5th Aug 2025345 PMAQI
5th Aug 2025316 PMAQI
5th Aug 2025347 PMAQI
5th Aug 2025318 PMAQI
5th Aug 2025269 PMAQI
5th Aug 20252810 PMAQI
5th Aug 20252911 PMAQI
6th Aug 20252812 AMAQI
6th Aug 2025261 AMAQI
6th Aug 2025272 AMAQI
6th Aug 2025283 AMAQI
6th Aug 2025314 AMAQI
6th Aug 2025295 AMAQI
25°C18/32°C
6th Aug 2025306 AMAQI
6th Aug 2025267 AMAQI
6th Aug 2025328 AMAQI
6th Aug 2025329 AMAQI
6th Aug 20253510 AMAQI
6th Aug 20253611 AMAQI
6th Aug 20253612 PMAQI
6th Aug 2025341 PMAQI
6th Aug 2025342 PMAQI
6th Aug 2025303 PMAQI
6th Aug 2025264 PMAQI
6th Aug 2025225 PMAQI
6th Aug 2025186 PMAQI
6th Aug 2025277 PMAQI
6th Aug 2025238 PMAQI
6th Aug 2025189 PMAQI
6th Aug 20251910 PMAQI
6th Aug 20252011 PMAQI
7th Aug 20252412 AMAQI
7th Aug 2025271 AMAQI
7th Aug 2025302 AMAQI
7th Aug 2025303 AMAQI
7th Aug 2025314 AMAQI
7th Aug 2025315 AMAQI
27°C20/35°C
7th Aug 2025266 AMAQI
7th Aug 2025257 AMAQI
7th Aug 2025258 AMAQI
7th Aug 2025259 AMAQI
7th Aug 20252810 AMAQI
7th Aug 20253211 AMAQI
7th Aug 20253012 PMAQI
7th Aug 2025291 PMAQI
7th Aug 2025312 PMAQI
7th Aug 2025313 PMAQI
7th Aug 2025304 PMAQI
7th Aug 2025275 PMAQI
7th Aug 2025276 PMAQI
7th Aug 2025317 PMAQI
7th Aug 2025308 PMAQI
7th Aug 2025259 PMAQI
7th Aug 20252610 PMAQI
7th Aug 20252611 PMAQI
8th Aug 20252712 AMAQI
8th Aug 2025301 AMAQI
8th Aug 2025312 AMAQI
8th Aug 2025333 AMAQI
8th Aug 2025304 AMAQI
8th Aug 2025245 AMAQI
29°C22/36°C
8th Aug 2025296 AMAQI
8th Aug 2025307 AMAQI
8th Aug 2025308 AMAQI
8th Aug 2025319 AMAQI
8th Aug 20253510 AMAQI
8th Aug 20253211 AMAQI
8th Aug 20253112 PMAQI
8th Aug 2025311 PMAQI
8th Aug 2025322 PMAQI
8th Aug 2025323 PMAQI
8th Aug 2025304 PMAQI
8th Aug 2025285 PMAQI
8th Aug 2025276 PMAQI
8th Aug 2025287 PMAQI
8th Aug 2025278 PMAQI
8th Aug 2025269 PMAQI
8th Aug 20252710 PMAQI
8th Aug 20252811 PMAQI
9th Aug 20252812 AMAQI
9th Aug 2025301 AMAQI
9th Aug 2025302 AMAQI
9th Aug 2025313 AMAQI
9th Aug 2025284 AMAQI
9th Aug 2025285 AMAQI
30°C22/38°C
9th Aug 2025346 AMAQI
9th Aug 2025357 AMAQI
9th Aug 2025348 AMAQI
9th Aug 2025329 AMAQI
9th Aug 20253110 AMAQI
9th Aug 20253111 AMAQI
9th Aug 20252912 PMAQI
9th Aug 2025311 PMAQI
9th Aug 2025302 PMAQI
9th Aug 2025323 PMAQI
9th Aug 2025294 PMAQI
9th Aug 2025315 PMAQI
9th Aug 2025306 PMAQI
9th Aug 2025327 PMAQI
9th Aug 2025328 PMAQI
9th Aug 2025289 PMAQI
9th Aug 20252810 PMAQI
9th Aug 20252911 PMAQI
10th Aug 20253012 AMAQI
10th Aug 2025331 AMAQI
10th Aug 2025362 AMAQI
10th Aug 2025333 AMAQI
10th Aug 2025314 AMAQI
10th Aug 2025365 AMAQI
32°C24/39°C
10th Aug 2025346 AMAQI
10th Aug 2025377 AMAQI
10th Aug 2025358 AMAQI
10th Aug 2025339 AMAQI
10th Aug 20253110 AMAQI
10th Aug 20253211 AMAQI
10th Aug 20253212 PMAQI
10th Aug 2025311 PMAQI
10th Aug 2025352 PMAQI
10th Aug 2025353 PMAQI
10th Aug 2025344 PMAQI
10th Aug 2025325 PMAQI
10th Aug 2025316 PMAQI
10th Aug 2025337 PMAQI
10th Aug 2025348 PMAQI
10th Aug 2025299 PMAQI
10th Aug 20253110 PMAQI
10th Aug 20252911 PMAQI
11th Aug 20253012 AMAQI
11th Aug 2025301 AMAQI
11th Aug 2025292 AMAQI
11th Aug 2025283 AMAQI
11th Aug 2025334 AMAQI
11th Aug 2025435 AMAQI
32°C24/40°C
11th Aug 2025436 AMAQI
6 AM11th Aug 2025427 AMAQI
11th Aug 2025408 AMAQI
1 PM
8 PM
1 AM
5 AM
--°C/°C
Day time
Avg. Highest Time
6 AM - 3 PM
34AQI
10 hours / Day
300 hours / Month
Avg. Lowest Time
4 PM - 8 PM
32AQI
5 hours / Day
150 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 6 AM to 3 PM (Avg. 34), while the lowest AQI was between 4 PM to 8 PM (Avg. 32).
Night time
Avg. Highest Time
2 AM - 5 AM
34AQI
4 hours / Day
120 hours / Month
Avg. Lowest Time
9 PM - 11 PM
30AQI
3 hours / Day
90 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 2 AM to 5 AM (Avg. 34), while the lowest AQI was between 9 PM to 11 PM (Avg. 30).
2025 Days Vs Air Quality
Alta Sierra, California, United States
2025
98%
217
2%
5
Total number of days with different AQI categories in last 223 days in 2025 (142 days remaining)
Good
217 DaysModerate
5 DaysPoor
0 DaysUnhealthy
0 DaysSevere
0 DaysHazardous
0 DaysUnder WHO’s Safe Air Quality Limits: 98%
Health Risk Level:
Very Low
In 2025, 98% of 223 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
Alta Sierra, 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.
1st January 2025
30AQI
30AQI
2nd January 2025
29AQI
29AQI
3rd January 2025
30AQI
30AQI
4th January 2025
24AQI
24AQI
5th January 2025
25AQI
25AQI
6th January 2025
26AQI
26AQI
7th January 2025
27AQI
27AQI
8th January 2025
28AQI
28AQI
9th January 2025
31AQI
31AQI
10th January 2025
33AQI
33AQI
11th January 2025
34AQI
34AQI
12th January 2025
28AQI
28AQI
13th January 2025
27AQI
27AQI
14th January 2025
28AQI
28AQI
15th January 2025
36AQI
36AQI
16th January 2025
33AQI
33AQI
17th January 2025
39AQI
39AQI
18th January 2025
43AQI
43AQI
19th January 2025
45AQI
45AQI
20th January 2025
34AQI
34AQI
21st January 2025
32AQI
32AQI
22nd January 2025
35AQI
35AQI
23rd January 2025
37AQI
37AQI
24th January 2025
34AQI
34AQI
25th January 2025
40AQI
40AQI
26th January 2025
28AQI
28AQI
27th January 2025
30AQI
30AQI
28th January 2025
43AQI
43AQI
29th January 2025
52AQI
52AQI
30th January 2025
55AQI
55AQI
31st January 2025
50AQI
50AQI
1st February 2025
24AQI
24AQI
2nd February 2025
23AQI
23AQI
3rd February 2025
23AQI
23AQI
4th February 2025
26AQI
26AQI
5th February 2025
27AQI
27AQI
6th February 2025
25AQI
25AQI
7th February 2025
32AQI
32AQI
8th February 2025
25AQI
25AQI
9th February 2025
28AQI
28AQI
10th February 2025
31AQI
31AQI
11th February 2025
35AQI
35AQI
12th February 2025
35AQI
35AQI
13th February 2025
30AQI
30AQI
14th February 2025
29AQI
29AQI
15th February 2025
29AQI
29AQI
16th February 2025
27AQI
27AQI
17th February 2025
27AQI
27AQI
18th February 2025
26AQI
26AQI
19th February 2025
28AQI
28AQI
20th February 2025
27AQI
27AQI
21st February 2025
34AQI
34AQI
22nd February 2025
29AQI
29AQI
23rd February 2025
29AQI
29AQI
24th February 2025
31AQI
31AQI
25th February 2025
47AQI
47AQI
26th February 2025
31AQI
31AQI
27th February 2025
40AQI
40AQI
28th February 2025
35AQI
35AQI
1st March 2025
29AQI
29AQI
2nd March 2025
27AQI
27AQI
3rd March 2025
27AQI
27AQI
4th March 2025
43AQI
43AQI
5th March 2025
28AQI
28AQI
6th March 2025
26AQI
26AQI
7th March 2025
27AQI
27AQI
8th March 2025
26AQI
26AQI
9th March 2025
29AQI
29AQI
10th March 2025
30AQI
30AQI
11th March 2025
36AQI
36AQI
12th March 2025
28AQI
28AQI
13th March 2025
21AQI
21AQI
14th March 2025
17AQI
17AQI
15th March 2025
23AQI
23AQI
16th March 2025
22AQI
22AQI
17th March 2025
16AQI
16AQI
18th March 2025
18AQI
18AQI
19th March 2025
25AQI
25AQI
20th March 2025
30AQI
30AQI
21st March 2025
25AQI
25AQI
22nd March 2025
18AQI
18AQI
23rd March 2025
20AQI
20AQI
24th March 2025
21AQI
21AQI
25th March 2025
21AQI
21AQI
26th March 2025
21AQI
21AQI
27th March 2025
21AQI
21AQI
28th March 2025
21AQI
21AQI
29th March 2025
21AQI
21AQI
30th March 2025
22AQI
22AQI
31st March 2025
23AQI
23AQI
1st April 2025
20AQI
20AQI
2nd April 2025
19AQI
19AQI
3rd April 2025
18AQI
18AQI
4th April 2025
21AQI
21AQI
5th April 2025
17AQI
17AQI
6th April 2025
23AQI
23AQI
7th April 2025
22AQI
22AQI
8th April 2025
20AQI
20AQI
9th April 2025
18AQI
18AQI
10th April 2025
21AQI
21AQI
11th April 2025
27AQI
27AQI
12th April 2025
24AQI
24AQI
13th April 2025
27AQI
27AQI
14th April 2025
22AQI
22AQI
15th April 2025
28AQI
28AQI
16th April 2025
25AQI
25AQI
17th April 2025
26AQI
26AQI
18th April 2025
32AQI
32AQI
19th April 2025
21AQI
21AQI
20th April 2025
23AQI
23AQI
21st April 2025
24AQI
24AQI
22nd April 2025
28AQI
28AQI
23rd April 2025
26AQI
26AQI
24th April 2025
31AQI
31AQI
25th April 2025
25AQI
25AQI
26th April 2025
32AQI
32AQI
27th April 2025
18AQI
18AQI
28th April 2025
19AQI
19AQI
29th April 2025
22AQI
22AQI
30th April 2025
35AQI
35AQI
1st May 2025
22AQI
22AQI
2nd May 2025
25AQI
25AQI
3rd May 2025
25AQI
25AQI
4th May 2025
22AQI
22AQI
5th May 2025
16AQI
16AQI
6th May 2025
17AQI
17AQI
7th May 2025
24AQI
24AQI
8th May 2025
31AQI
31AQI
9th May 2025
27AQI
27AQI
10th May 2025
24AQI
24AQI
11th May 2025
24AQI
24AQI
12th May 2025
21AQI
21AQI
13th May 2025
22AQI
22AQI
14th May 2025
18AQI
18AQI
15th May 2025
18AQI
18AQI
16th May 2025
18AQI
18AQI
17th May 2025
24AQI
24AQI
18th May 2025
22AQI
22AQI
19th May 2025
19AQI
19AQI
20th May 2025
16AQI
16AQI
21st May 2025
22AQI
22AQI
22nd May 2025
23AQI
23AQI
23rd May 2025
21AQI
21AQI
24th May 2025
26AQI
26AQI
25th May 2025
30AQI
30AQI
26th May 2025
19AQI
19AQI
27th May 2025
19AQI
19AQI
28th May 2025
25AQI
25AQI
29th May 2025
29AQI
29AQI
30th May 2025
30AQI
30AQI
31st May 2025
31AQI
31AQI
1st June 2025
30AQI
30AQI
2nd June 2025
28AQI
28AQI
3rd June 2025
37AQI
37AQI
4th June 2025
37AQI
37AQI
5th June 2025
31AQI
31AQI
6th June 2025
36AQI
36AQI
7th June 2025
35AQI
35AQI
8th June 2025
38AQI
38AQI
9th June 2025
33AQI
33AQI
10th June 2025
39AQI
39AQI
11th June 2025
39AQI
39AQI
12th June 2025
39AQI
39AQI
13th June 2025
36AQI
36AQI
14th June 2025
30AQI
30AQI
15th June 2025
29AQI
29AQI
16th June 2025
32AQI
32AQI
17th June 2025
37AQI
37AQI
18th June 2025
37AQI
37AQI
19th June 2025
30AQI
30AQI
20th June 2025
34AQI
34AQI
21st June 2025
29AQI
29AQI
22nd June 2025
24AQI
24AQI
23rd June 2025
27AQI
27AQI
24th June 2025
30AQI
30AQI
25th June 2025
34AQI
34AQI
26th June 2025
34AQI
34AQI
27th June 2025
41AQI
41AQI
28th June 2025
36AQI
36AQI
29th June 2025
42AQI
42AQI
30th June 2025
38AQI
38AQI
1st July 2025
33AQI
33AQI
2nd July 2025
31AQI
31AQI
3rd July 2025
35AQI
35AQI
4th July 2025
32AQI
32AQI
5th July 2025
30AQI
30AQI
6th July 2025
28AQI
28AQI
7th July 2025
24AQI
24AQI
8th July 2025
32AQI
32AQI
9th July 2025
28AQI
28AQI
10th July 2025
31AQI
31AQI
11th July 2025
48AQI
48AQI
12th July 2025
60AQI
60AQI
13th July 2025
59AQI
59AQI
14th July 2025
53AQI
53AQI
15th July 2025
48AQI
48AQI
16th July 2025
40AQI
40AQI
17th July 2025
34AQI
34AQI
18th July 2025
36AQI
36AQI
19th July 2025
35AQI
35AQI
20th July 2025
33AQI
33AQI
21st July 2025
31AQI
31AQI
22nd July 2025
24AQI
24AQI
23rd July 2025
20AQI
20AQI
24th July 2025
21AQI
21AQI
25th July 2025
22AQI
22AQI
26th July 2025
23AQI
23AQI
27th July 2025
23AQI
23AQI
28th July 2025
25AQI
25AQI
29th July 2025
25AQI
25AQI
30th July 2025
26AQI
26AQI
31st July 2025
25AQI
25AQI
1st August 2025
28AQI
28AQI
2nd August 2025
30AQI
30AQI
3rd August 2025
31AQI
31AQI
4th August 2025
39AQI
39AQI
5th August 2025
34AQI
34AQI
6th August 2025
27AQI
27AQI
7th August 2025
28AQI
28AQI
8th August 2025
29AQI
29AQI
9th August 2025
30AQI
30AQI
10th August 2025
33AQI
33AQI
34AQI
30AQI
25AQI
24AQI
23AQI
34AQI
33AQI
31AQI
No. of days
Jan.Feb.Mar.Apr.MayJun.Jul.Aug.Sep.Oct.Nov.Dec.Total Days
202529AQI
29
2
28
31
30
31
30
28
3
10
217
5
Highest AQI recorded in
January34AQI
Lowest AQI recorded in
May23AQI
202432AQI
31
29
31
30
31
29
29
2
28
3
30
31
27
3
31
357
8
Highest AQI recorded in
July43AQI
Lowest AQI recorded in
January26AQI
202336AQI
30
22
3
31
30
28
3
30
29
2
30
1
26
4
30
1
28
1
31
345
15
Highest AQI recorded in
July41AQI
Lowest AQI recorded in
December29AQI
202236AQI
28
2
22
31
17
31
30
18
1
3
18
4
3
2
1
27
27
31
283
7
3
2
1
Highest AQI recorded in
September65AQI
Lowest AQI recorded in
March31AQI
202140AQI
30
28
31
30
31
30
25
6
8
7
10
4
2
20
10
29
2
30
27
1
319
26
10
4
2
Highest AQI recorded in
August104AQI
Lowest AQI recorded in
February29AQI
202052AQI
13
20
18
30
30
1
15
4
5
6
1
4
11
9
4
2
21
4
4
28
2
30
1
209
23
18
10
3
Highest AQI recorded in
September104AQI
Lowest AQI recorded in
May32AQI
Most & Least Polluted Years Over the Last 6 Years
Most Polluted Year Recorded
2020(Avg.)
52AQILeast Polluted Year Recorded
2025(Avg.)
29AQIAlta Sierra's annual 2025 AQI (29) shows an average percentage change of -23.8% (improved AQI) compared to previous years: 2020 (52), 2021 (40), 2022 (36), 2023 (36), 2024 (32).
