Simi Valley, 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
Simi Valley, California, United States
2021
2022
2023
2024
2025
AQI
.
Days
AQI Trends: Highest and Lowest
Highest AQI recorded on
31st Aug 2021
69AQILowest AQI recorded on
11th Aug 2023
24AQISame Day Analysis (12th August ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 1st highest AQI at 54 of Moderate air quality on the same day.
Download 2024 Annual Data
World Air Quality Report
Day & Night AQI Trend: 12th Aug - 13th Aug 2025
Simi Valley, California, United States
AQI
Day
Night
.
6 AM12th Aug 2025
7 PM
5 AM13th Aug 2025
Day time
Avg. Highest Time
6PM12th Aug
60AQI
Avg. Lowest Time
9AM12th Aug
49AQI
Night time
Avg. Highest Time
8PM12th Aug
58AQI
Avg. Lowest Time
4AM13th Aug
52AQI
In the last 24 hours,
Simi Valley's AQI reached its highest point of 60 at 6 PM during the Day, while the lowest point, 49, was recorded at 9 AM during the Day between 12th Aug and 13th Aug 2025.
Day & Night AQI Trend : Jul - Aug 2025
Simi Valley, California, United States
JulAug
14th - 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 - 12th12th - 13th13th
Day
Night
14th Jul 2025226 AMAQI
14th Jul 2025277 AMAQI
14th Jul 2025288 AMAQI
14th Jul 2025269 AMAQI
14th Jul 20252910 AMAQI
14th Jul 20254011 AMAQI
14th Jul 20254512 PMAQI
14th Jul 2025411 PMAQI
14th Jul 2025422 PMAQI
14th Jul 2025413 PMAQI
14th Jul 2025404 PMAQI
14th Jul 2025385 PMAQI
14th Jul 2025376 PMAQI
14th Jul 2025357 PMAQI
14th Jul 2025418 PMAQI
14th Jul 2025349 PMAQI
14th Jul 20253110 PMAQI
14th Jul 20253011 PMAQI
15th Jul 20253112 AMAQI
15th Jul 2025331 AMAQI
15th Jul 2025322 AMAQI
15th Jul 2025293 AMAQI
15th Jul 2025264 AMAQI
15th Jul 2025325 AMAQI
22°C15/31°C
15th Jul 2025286 AMAQI
15th Jul 2025307 AMAQI
15th Jul 2025358 AMAQI
15th Jul 2025369 AMAQI
15th Jul 20253810 AMAQI
15th Jul 20254911 AMAQI
15th Jul 20255212 PMAQI
15th Jul 2025481 PMAQI
15th Jul 2025432 PMAQI
15th Jul 2025443 PMAQI
15th Jul 2025404 PMAQI
15th Jul 2025385 PMAQI
15th Jul 2025396 PMAQI
15th Jul 2025367 PMAQI
15th Jul 2025368 PMAQI
15th Jul 2025389 PMAQI
15th Jul 20254210 PMAQI
15th Jul 20254011 PMAQI
16th Jul 20253612 AMAQI
16th Jul 2025371 AMAQI
16th Jul 2025362 AMAQI
16th Jul 2025363 AMAQI
16th Jul 2025384 AMAQI
16th Jul 2025355 AMAQI
22°C16/30°C
16th Jul 2025346 AMAQI
16th Jul 2025427 AMAQI
16th Jul 2025428 AMAQI
16th Jul 2025439 AMAQI
16th Jul 20254410 AMAQI
16th Jul 20254211 AMAQI
16th Jul 20254512 PMAQI
16th Jul 2025471 PMAQI
16th Jul 2025432 PMAQI
16th Jul 2025423 PMAQI
16th Jul 2025354 PMAQI
16th Jul 2025345 PMAQI
16th Jul 2025336 PMAQI
16th Jul 2025377 PMAQI
16th Jul 2025358 PMAQI
16th Jul 2025259 PMAQI
16th Jul 20252410 PMAQI
16th Jul 20252611 PMAQI
17th Jul 20252812 AMAQI
17th Jul 2025281 AMAQI
17th Jul 2025272 AMAQI
17th Jul 2025253 AMAQI
17th Jul 2025184 AMAQI
17th Jul 2025195 AMAQI
22°C17/30°C
17th Jul 2025206 AMAQI
17th Jul 2025207 AMAQI
17th Jul 2025228 AMAQI
17th Jul 2025219 AMAQI
17th Jul 20252010 AMAQI
17th Jul 20252511 AMAQI
17th Jul 20253112 PMAQI
17th Jul 2025291 PMAQI
17th Jul 2025282 PMAQI
17th Jul 2025273 PMAQI
17th Jul 2025284 PMAQI
17th Jul 2025285 PMAQI
17th Jul 2025266 PMAQI
17th Jul 2025247 PMAQI
17th Jul 2025248 PMAQI
17th Jul 2025289 PMAQI
17th Jul 20252610 PMAQI
17th Jul 20252711 PMAQI
18th Jul 20252912 AMAQI
18th Jul 2025291 AMAQI
18th Jul 2025282 AMAQI
18th Jul 2025283 AMAQI
18th Jul 2025294 AMAQI
18th Jul 2025245 AMAQI
23°C17/31°C
18th Jul 2025216 AMAQI
18th Jul 2025207 AMAQI
18th Jul 2025238 AMAQI
18th Jul 2025219 AMAQI
18th Jul 20251910 AMAQI
18th Jul 20252211 AMAQI
18th Jul 20252412 PMAQI
18th Jul 2025271 PMAQI
18th Jul 2025272 PMAQI
18th Jul 2025263 PMAQI
18th Jul 2025284 PMAQI
18th Jul 2025285 PMAQI
18th Jul 2025286 PMAQI
18th Jul 2025277 PMAQI
18th Jul 2025258 PMAQI
18th Jul 2025289 PMAQI
18th Jul 20253110 PMAQI
18th Jul 20253211 PMAQI
19th Jul 20253312 AMAQI
19th Jul 2025321 AMAQI
19th Jul 2025312 AMAQI
19th Jul 2025283 AMAQI
19th Jul 2025294 AMAQI
19th Jul 2025335 AMAQI
23°C17/30°C
19th Jul 2025316 AMAQI
19th Jul 2025287 AMAQI
19th Jul 2025278 AMAQI
19th Jul 2025279 AMAQI
19th Jul 20253210 AMAQI
19th Jul 20253411 AMAQI
19th Jul 20253612 PMAQI
19th Jul 2025371 PMAQI
19th Jul 2025392 PMAQI
19th Jul 2025383 PMAQI
19th Jul 2025384 PMAQI
19th Jul 2025365 PMAQI
19th Jul 2025376 PMAQI
19th Jul 2025357 PMAQI
19th Jul 2025368 PMAQI
19th Jul 2025389 PMAQI
19th Jul 20253810 PMAQI
19th Jul 20253411 PMAQI
20th Jul 20253412 AMAQI
20th Jul 2025381 AMAQI
20th Jul 2025372 AMAQI
20th Jul 2025373 AMAQI
20th Jul 2025404 AMAQI
20th Jul 2025505 AMAQI
23°C17/31°C
20th Jul 2025516 AMAQI
20th Jul 2025487 AMAQI
20th Jul 2025468 AMAQI
20th Jul 2025519 AMAQI
20th Jul 20254910 AMAQI
20th Jul 20254711 AMAQI
20th Jul 20254812 PMAQI
20th Jul 2025481 PMAQI
20th Jul 2025472 PMAQI
20th Jul 2025433 PMAQI
20th Jul 2025424 PMAQI
20th Jul 2025425 PMAQI
20th Jul 2025436 PMAQI
20th Jul 2025427 PMAQI
20th Jul 2025438 PMAQI
20th Jul 2025409 PMAQI
20th Jul 20254210 PMAQI
20th Jul 20254011 PMAQI
21st Jul 20253812 AMAQI
21st Jul 2025361 AMAQI
21st Jul 2025352 AMAQI
21st Jul 2025333 AMAQI
21st Jul 2025244 AMAQI
21st Jul 2025245 AMAQI
21°C17/29°C
21st Jul 2025256 AMAQI
21st Jul 2025347 AMAQI
21st Jul 2025388 AMAQI
21st Jul 2025399 AMAQI
21st Jul 20254210 AMAQI
21st Jul 20253411 AMAQI
21st Jul 20253212 PMAQI
21st Jul 2025291 PMAQI
21st Jul 2025312 PMAQI
21st Jul 2025363 PMAQI
21st Jul 2025344 PMAQI
21st Jul 2025355 PMAQI
21st Jul 2025356 PMAQI
21st Jul 2025327 PMAQI
21st Jul 2025318 PMAQI
21st Jul 2025309 PMAQI
21st Jul 20252910 PMAQI
21st Jul 20252911 PMAQI
22nd Jul 20252912 AMAQI
22nd Jul 2025301 AMAQI
22nd Jul 2025282 AMAQI
22nd Jul 2025233 AMAQI
22nd Jul 2025144 AMAQI
22nd Jul 2025165 AMAQI
20°C17/28°C
22nd Jul 2025226 AMAQI
22nd Jul 2025277 AMAQI
22nd Jul 2025258 AMAQI
22nd Jul 2025249 AMAQI
22nd Jul 20252410 AMAQI
22nd Jul 20252711 AMAQI
22nd Jul 20253112 PMAQI
22nd Jul 2025291 PMAQI
22nd Jul 2025272 PMAQI
22nd Jul 2025283 PMAQI
22nd Jul 2025284 PMAQI
22nd Jul 2025275 PMAQI
22nd Jul 2025286 PMAQI
22nd Jul 2025257 PMAQI
22nd Jul 2025258 PMAQI
22nd Jul 2025269 PMAQI
22nd Jul 20252410 PMAQI
22nd Jul 20252311 PMAQI
23rd Jul 20252212 AMAQI
23rd Jul 2025231 AMAQI
23rd Jul 2025222 AMAQI
23rd Jul 2025183 AMAQI
23rd Jul 2025184 AMAQI
23rd Jul 2025115 AMAQI
20°C16/27°C
23rd Jul 2025156 AMAQI
23rd Jul 2025147 AMAQI
23rd Jul 2025178 AMAQI
23rd Jul 2025209 AMAQI
23rd Jul 20252410 AMAQI
23rd Jul 20252511 AMAQI
23rd Jul 20252712 PMAQI
23rd Jul 2025301 PMAQI
23rd Jul 2025322 PMAQI
23rd Jul 2025313 PMAQI
23rd Jul 2025284 PMAQI
23rd Jul 2025275 PMAQI
23rd Jul 2025256 PMAQI
23rd Jul 2025237 PMAQI
23rd Jul 2025238 PMAQI
23rd Jul 2025229 PMAQI
23rd Jul 20252010 PMAQI
23rd Jul 20252211 PMAQI
24th Jul 20252112 AMAQI
24th Jul 2025211 AMAQI
24th Jul 2025192 AMAQI
24th Jul 2025183 AMAQI
24th Jul 2025154 AMAQI
24th Jul 2025145 AMAQI
21°C15/29°C
24th Jul 2025156 AMAQI
24th Jul 2025177 AMAQI
24th Jul 2025168 AMAQI
24th Jul 2025169 AMAQI
24th Jul 20251410 AMAQI
24th Jul 20251611 AMAQI
24th Jul 20252012 PMAQI
24th Jul 2025221 PMAQI
24th Jul 2025212 PMAQI
24th Jul 2025223 PMAQI
24th Jul 2025244 PMAQI
24th Jul 2025215 PMAQI
24th Jul 2025206 PMAQI
24th Jul 2025207 PMAQI
24th Jul 2025198 PMAQI
24th Jul 2025189 PMAQI
24th Jul 20251810 PMAQI
24th Jul 20251911 PMAQI
25th Jul 20251912 AMAQI
25th Jul 2025181 AMAQI
25th Jul 2025172 AMAQI
25th Jul 2025173 AMAQI
25th Jul 2025154 AMAQI
25th Jul 2025145 AMAQI
21°C15/30°C
25th Jul 2025136 AMAQI
25th Jul 2025157 AMAQI
25th Jul 2025148 AMAQI
25th Jul 2025159 AMAQI
25th Jul 20251610 AMAQI
25th Jul 20251611 AMAQI
25th Jul 20251712 PMAQI
25th Jul 2025181 PMAQI
25th Jul 2025172 PMAQI
25th Jul 2025193 PMAQI
25th Jul 2025194 PMAQI
25th Jul 2025195 PMAQI
25th Jul 2025206 PMAQI
25th Jul 2025187 PMAQI
25th Jul 2025198 PMAQI
25th Jul 2025219 PMAQI
25th Jul 20252110 PMAQI
25th Jul 20252111 PMAQI
26th Jul 20251912 AMAQI
26th Jul 2025181 AMAQI
26th Jul 2025192 AMAQI
26th Jul 2025213 AMAQI
26th Jul 2025204 AMAQI
26th Jul 2025205 AMAQI
21°C15/29°C
26th Jul 2025216 AMAQI
26th Jul 2025167 AMAQI
26th Jul 2025188 AMAQI
26th Jul 2025189 AMAQI
26th Jul 20251910 AMAQI
26th Jul 20252111 AMAQI
26th Jul 20252112 PMAQI
26th Jul 2025241 PMAQI
26th Jul 2025222 PMAQI
26th Jul 2025233 PMAQI
26th Jul 2025244 PMAQI
26th Jul 2025265 PMAQI
26th Jul 2025256 PMAQI
26th Jul 2025247 PMAQI
26th Jul 2025238 PMAQI
26th Jul 2025229 PMAQI
26th Jul 20252210 PMAQI
26th Jul 20252211 PMAQI
27th Jul 20252312 AMAQI
27th Jul 2025231 AMAQI
27th Jul 2025222 AMAQI
27th Jul 2025213 AMAQI
27th Jul 2025204 AMAQI
27th Jul 2025195 AMAQI
20°C14/28°C
27th Jul 2025216 AMAQI
27th Jul 2025237 AMAQI
27th Jul 2025218 AMAQI
27th Jul 2025219 AMAQI
27th Jul 20252110 AMAQI
27th Jul 20252011 AMAQI
27th Jul 20252212 PMAQI
27th Jul 2025251 PMAQI
27th Jul 2025242 PMAQI
27th Jul 2025223 PMAQI
27th Jul 2025234 PMAQI
27th Jul 2025235 PMAQI
27th Jul 2025206 PMAQI
27th Jul 2025227 PMAQI
27th Jul 2025228 PMAQI
27th Jul 2025229 PMAQI
27th Jul 20252110 PMAQI
27th Jul 20252211 PMAQI
28th Jul 20252212 AMAQI
28th Jul 2025231 AMAQI
28th Jul 2025232 AMAQI
28th Jul 2025213 AMAQI
28th Jul 2025164 AMAQI
28th Jul 2025145 AMAQI
21°C15/29°C
28th Jul 2025206 AMAQI
28th Jul 2025207 AMAQI
28th Jul 2025188 AMAQI
28th Jul 2025189 AMAQI
28th Jul 20252010 AMAQI
28th Jul 20252011 AMAQI
28th Jul 20252512 PMAQI
28th Jul 2025281 PMAQI
28th Jul 2025292 PMAQI
28th Jul 2025263 PMAQI
28th Jul 2025274 PMAQI
28th Jul 2025285 PMAQI
28th Jul 2025266 PMAQI
28th Jul 2025247 PMAQI
28th Jul 2025228 PMAQI
28th Jul 2025229 PMAQI
28th Jul 20252210 PMAQI
28th Jul 20252311 PMAQI
29th Jul 20252212 AMAQI
29th Jul 2025231 AMAQI
29th Jul 2025222 AMAQI
29th Jul 2025213 AMAQI
29th Jul 2025224 AMAQI
29th Jul 2025235 AMAQI
21°C15/29°C
29th Jul 2025226 AMAQI
29th Jul 2025217 AMAQI
29th Jul 2025228 AMAQI
29th Jul 2025249 AMAQI
29th Jul 20252810 AMAQI
29th Jul 20252811 AMAQI
29th Jul 20253112 PMAQI
29th Jul 2025261 PMAQI
29th Jul 2025282 PMAQI
29th Jul 2025283 PMAQI
29th Jul 2025284 PMAQI
29th Jul 2025285 PMAQI
29th Jul 2025276 PMAQI
29th Jul 2025257 PMAQI
29th Jul 2025268 PMAQI
29th Jul 2025249 PMAQI
29th Jul 20252510 PMAQI
29th Jul 20252411 PMAQI
30th Jul 20252612 AMAQI
30th Jul 2025261 AMAQI
30th Jul 2025262 AMAQI
30th Jul 2025253 AMAQI
30th Jul 2025274 AMAQI
30th Jul 2025275 AMAQI
23°C15/32°C
30th Jul 2025266 AMAQI
30th Jul 2025257 AMAQI
30th Jul 2025268 AMAQI
30th Jul 2025289 AMAQI
30th Jul 20252810 AMAQI
30th Jul 20252811 AMAQI
30th Jul 20252812 PMAQI
30th Jul 2025281 PMAQI
30th Jul 2025262 PMAQI
30th Jul 2025263 PMAQI
30th Jul 2025264 PMAQI
30th Jul 2025265 PMAQI
30th Jul 2025266 PMAQI
30th Jul 2025267 PMAQI
30th Jul 2025268 PMAQI
30th Jul 2025339 PMAQI
30th Jul 20253310 PMAQI
30th Jul 20253411 PMAQI
31st Jul 20253412 AMAQI
31st Jul 2025331 AMAQI
31st Jul 2025312 AMAQI
31st Jul 2025353 AMAQI
31st Jul 2025384 AMAQI
31st Jul 2025385 AMAQI
24°C16/33°C
31st Jul 2025436 AMAQI
31st Jul 2025397 AMAQI
31st Jul 2025368 AMAQI
31st Jul 2025369 AMAQI
31st Jul 20254410 AMAQI
31st Jul 20254211 AMAQI
31st Jul 20253512 PMAQI
31st Jul 2025401 PMAQI
31st Jul 2025442 PMAQI
31st Jul 2025503 PMAQI
31st Jul 2025484 PMAQI
31st Jul 2025445 PMAQI
31st Jul 2025406 PMAQI
31st Jul 2025437 PMAQI
31st Jul 2025378 PMAQI
31st Jul 2025349 PMAQI
31st Jul 20254010 PMAQI
31st Jul 20253911 PMAQI
1st Aug 20253712 AMAQI
1st Aug 2025361 AMAQI
1st Aug 2025372 AMAQI
1st Aug 2025383 AMAQI
1st Aug 2025384 AMAQI
1st Aug 2025405 AMAQI
25°C17/34°C
1st Aug 2025336 AMAQI
1st Aug 2025327 AMAQI
1st Aug 2025378 AMAQI
1st Aug 2025369 AMAQI
1st Aug 20254010 AMAQI
1st Aug 20254011 AMAQI
1st Aug 20254012 PMAQI
1st Aug 2025431 PMAQI
1st Aug 2025462 PMAQI
1st Aug 2025513 PMAQI
1st Aug 2025524 PMAQI
1st Aug 2025505 PMAQI
1st Aug 2025526 PMAQI
1st Aug 2025407 PMAQI
1st Aug 2025448 PMAQI
1st Aug 2025489 PMAQI
1st Aug 20254510 PMAQI
1st Aug 20254311 PMAQI
2nd Aug 20254712 AMAQI
2nd Aug 2025471 AMAQI
2nd Aug 2025422 AMAQI
2nd Aug 2025413 AMAQI
2nd Aug 2025404 AMAQI
2nd Aug 2025365 AMAQI
23°C16/32°C
2nd Aug 2025336 AMAQI
2nd Aug 2025317 AMAQI
2nd Aug 2025308 AMAQI
2nd Aug 2025299 AMAQI
2nd Aug 20253210 AMAQI
2nd Aug 20253111 AMAQI
2nd Aug 20253412 PMAQI
2nd Aug 2025401 PMAQI
2nd Aug 2025472 PMAQI
2nd Aug 2025453 PMAQI
2nd Aug 2025494 PMAQI
2nd Aug 2025465 PMAQI
2nd Aug 2025466 PMAQI
2nd Aug 2025427 PMAQI
2nd Aug 2025438 PMAQI
2nd Aug 2025509 PMAQI
2nd Aug 20255110 PMAQI
2nd Aug 20254511 PMAQI
3rd Aug 20254612 AMAQI
3rd Aug 2025531 AMAQI
3rd Aug 2025502 AMAQI
3rd Aug 2025523 AMAQI
3rd Aug 2025524 AMAQI
3rd Aug 2025505 AMAQI
24°C16/32°C
3rd Aug 2025466 AMAQI
3rd Aug 2025447 AMAQI
3rd Aug 2025388 AMAQI
3rd Aug 2025359 AMAQI
3rd Aug 20254210 AMAQI
3rd Aug 20253811 AMAQI
3rd Aug 20254012 PMAQI
3rd Aug 2025421 PMAQI
3rd Aug 2025422 PMAQI
3rd Aug 2025443 PMAQI
3rd Aug 2025464 PMAQI
3rd Aug 2025525 PMAQI
3rd Aug 2025546 PMAQI
3rd Aug 2025487 PMAQI
3rd Aug 2025488 PMAQI
3rd Aug 2025489 PMAQI
3rd Aug 20255110 PMAQI
3rd Aug 20255311 PMAQI
4th Aug 20255412 AMAQI
4th Aug 2025541 AMAQI
4th Aug 2025542 AMAQI
4th Aug 2025563 AMAQI
4th Aug 2025564 AMAQI
4th Aug 2025565 AMAQI
25°C17/33°C
4th Aug 2025566 AMAQI
4th Aug 2025557 AMAQI
4th Aug 2025548 AMAQI
4th Aug 2025559 AMAQI
4th Aug 20255810 AMAQI
4th Aug 20255611 AMAQI
4th Aug 20255712 PMAQI
4th Aug 2025571 PMAQI
4th Aug 2025582 PMAQI
4th Aug 2025603 PMAQI
4th Aug 2025624 PMAQI
4th Aug 2025625 PMAQI
4th Aug 2025646 PMAQI
4th Aug 2025567 PMAQI
4th Aug 2025598 PMAQI
4th Aug 2025649 PMAQI
4th Aug 20256410 PMAQI
4th Aug 20256511 PMAQI
5th Aug 20256612 AMAQI
5th Aug 2025701 AMAQI
5th Aug 2025702 AMAQI
5th Aug 2025683 AMAQI
5th Aug 2025664 AMAQI
5th Aug 2025665 AMAQI
25°C18/30°C
5th Aug 2025676 AMAQI
5th Aug 2025667 AMAQI
5th Aug 2025658 AMAQI
5th Aug 2025659 AMAQI
5th Aug 20256610 AMAQI
5th Aug 20256511 AMAQI
5th Aug 20256412 PMAQI
5th Aug 2025651 PMAQI
5th Aug 2025652 PMAQI
5th Aug 2025653 PMAQI
5th Aug 2025644 PMAQI
5th Aug 2025665 PMAQI
5th Aug 2025646 PMAQI
5th Aug 2025657 PMAQI
5th Aug 2025648 PMAQI
5th Aug 2025609 PMAQI
5th Aug 20256010 PMAQI
5th Aug 20256211 PMAQI
6th Aug 20256412 AMAQI
6th Aug 2025631 AMAQI
6th Aug 2025622 AMAQI
6th Aug 2025623 AMAQI
6th Aug 2025614 AMAQI
6th Aug 2025635 AMAQI
25°C18/34°C
6th Aug 2025636 AMAQI
6th Aug 2025637 AMAQI
6th Aug 2025628 AMAQI
6th Aug 2025619 AMAQI
6th Aug 20256110 AMAQI
6th Aug 20256111 AMAQI
6th Aug 20256112 PMAQI
6th Aug 2025631 PMAQI
6th Aug 2025612 PMAQI
6th Aug 2025663 PMAQI
6th Aug 2025674 PMAQI
6th Aug 2025665 PMAQI
6th Aug 2025666 PMAQI
6th Aug 2025617 PMAQI
6th Aug 2025608 PMAQI
6th Aug 2025629 PMAQI
6th Aug 20256310 PMAQI
6th Aug 20256111 PMAQI
7th Aug 20256012 AMAQI
7th Aug 2025601 AMAQI
7th Aug 2025602 AMAQI
7th Aug 2025593 AMAQI
7th Aug 2025554 AMAQI
7th Aug 2025575 AMAQI
27°C18/36°C
7th Aug 2025606 AMAQI
7th Aug 2025567 AMAQI
7th Aug 2025578 AMAQI
7th Aug 2025589 AMAQI
7th Aug 20256010 AMAQI
7th Aug 20256211 AMAQI
7th Aug 20255812 PMAQI
7th Aug 2025581 PMAQI
7th Aug 2025592 PMAQI
7th Aug 2025593 PMAQI
7th Aug 2025574 PMAQI
7th Aug 2025545 PMAQI
7th Aug 2025546 PMAQI
7th Aug 2025567 PMAQI
7th Aug 2025578 PMAQI
7th Aug 2025549 PMAQI
7th Aug 20255610 PMAQI
7th Aug 20255611 PMAQI
8th Aug 20255612 AMAQI
8th Aug 2025581 AMAQI
8th Aug 2025582 AMAQI
8th Aug 2025593 AMAQI
8th Aug 2025614 AMAQI
8th Aug 2025595 AMAQI
28°C19/38°C
8th Aug 2025606 AMAQI
8th Aug 2025607 AMAQI
8th Aug 2025618 AMAQI
8th Aug 2025629 AMAQI
8th Aug 20256110 AMAQI
8th Aug 20256311 AMAQI
8th Aug 20255812 PMAQI
8th Aug 2025621 PMAQI
8th Aug 2025572 PMAQI
8th Aug 2025583 PMAQI
8th Aug 2025584 PMAQI
8th Aug 2025565 PMAQI
8th Aug 2025556 PMAQI
8th Aug 2025567 PMAQI
8th Aug 2025568 PMAQI
8th Aug 2025539 PMAQI
8th Aug 20255310 PMAQI
8th Aug 20255411 PMAQI
9th Aug 20255612 AMAQI
9th Aug 2025591 AMAQI
9th Aug 2025592 AMAQI
9th Aug 2025563 AMAQI
9th Aug 2025504 AMAQI
9th Aug 2025485 AMAQI
28°C21/37°C
9th Aug 2025546 AMAQI
9th Aug 2025557 AMAQI
9th Aug 2025558 AMAQI
9th Aug 2025549 AMAQI
9th Aug 20255410 AMAQI
9th Aug 20255511 AMAQI
9th Aug 20255412 PMAQI
9th Aug 2025551 PMAQI
9th Aug 2025542 PMAQI
9th Aug 2025553 PMAQI
9th Aug 2025554 PMAQI
9th Aug 2025565 PMAQI
9th Aug 2025546 PMAQI
9th Aug 2025547 PMAQI
9th Aug 2025548 PMAQI
9th Aug 2025499 PMAQI
9th Aug 20254710 PMAQI
9th Aug 20254811 PMAQI
10th Aug 20255212 AMAQI
10th Aug 2025531 AMAQI
10th Aug 2025542 AMAQI
10th Aug 2025533 AMAQI
10th Aug 2025494 AMAQI
10th Aug 2025525 AMAQI
26°C18/36°C
10th Aug 2025546 AMAQI
10th Aug 2025577 AMAQI
10th Aug 2025528 AMAQI
10th Aug 2025469 AMAQI
10th Aug 20254610 AMAQI
10th Aug 20254611 AMAQI
10th Aug 20254912 PMAQI
10th Aug 2025541 PMAQI
10th Aug 2025532 PMAQI
10th Aug 2025543 PMAQI
10th Aug 2025544 PMAQI
10th Aug 2025565 PMAQI
10th Aug 2025566 PMAQI
10th Aug 2025557 PMAQI
10th Aug 2025558 PMAQI
10th Aug 2025559 PMAQI
10th Aug 20255210 PMAQI
10th Aug 20255411 PMAQI
11th Aug 20255312 AMAQI
11th Aug 2025491 AMAQI
11th Aug 2025502 AMAQI
11th Aug 2025503 AMAQI
11th Aug 2025464 AMAQI
11th Aug 2025445 AMAQI
25°C19/34°C
11th Aug 2025426 AMAQI
11th Aug 2025437 AMAQI
11th Aug 2025428 AMAQI
11th Aug 2025429 AMAQI
11th Aug 20255010 AMAQI
11th Aug 20255211 AMAQI
11th Aug 20255112 PMAQI
11th Aug 2025521 PMAQI
11th Aug 2025522 PMAQI
11th Aug 2025533 PMAQI
11th Aug 2025524 PMAQI
11th Aug 2025535 PMAQI
11th Aug 2025536 PMAQI
11th Aug 2025527 PMAQI
11th Aug 2025508 PMAQI
11th Aug 2025509 PMAQI
11th Aug 20254910 PMAQI
11th Aug 20254611 PMAQI
12th Aug 20255112 AMAQI
12th Aug 2025521 AMAQI
12th Aug 2025542 AMAQI
12th Aug 2025533 AMAQI
12th Aug 2025534 AMAQI
12th Aug 2025535 AMAQI
25°C19/34°C
12th Aug 2025526 AMAQI
12th Aug 2025557 AMAQI
12th Aug 2025508 AMAQI
12th Aug 2025499 AMAQI
12th Aug 20255310 AMAQI
12th Aug 20255511 AMAQI
12th Aug 20255512 PMAQI
12th Aug 2025561 PMAQI
12th Aug 2025562 PMAQI
12th Aug 2025553 PMAQI
12th Aug 2025574 PMAQI
12th Aug 2025595 PMAQI
12th Aug 2025606 PMAQI
12th Aug 2025547 PMAQI
12th Aug 2025588 PMAQI
12th Aug 2025579 PMAQI
12th Aug 20255510 PMAQI
12th Aug 20255511 PMAQI
13th Aug 20255312 AMAQI
13th Aug 2025541 AMAQI
13th Aug 2025532 AMAQI
13th Aug 2025523 AMAQI
13th Aug 2025524 AMAQI
13th Aug 2025535 AMAQI
26°C20/34°C
13th Aug 2025526 AMAQI
6 AM13th Aug 2025537 AMAQI
13th Aug 2025538 AMAQI
13th Aug 2025539 AMAQI
13th Aug 20255410 AMAQI
13th Aug 20255711 AMAQI
12 PM
7 PM
12 AM
5 AM
--°C/°C
Day time
Avg. Highest Time
10 AM - 7 PM
40AQI
10 hours / Day
300 hours / Month
Avg. Lowest Time
6 AM - 9 AM
36AQI
4 hours / Day
120 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 10 AM to 7 PM (Avg. 40), while the lowest AQI was between 6 AM to 9 AM (Avg. 36).
Night time
Avg. Highest Time
12 AM - 3 AM
39AQI
4 hours / Day
120 hours / Month
Avg. Lowest Time
4 AM - 5 AM
36AQI
2 hours / Day
60 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 12 AM to 3 AM (Avg. 39), while the lowest AQI was between 4 AM to 5 AM (Avg. 36).
2025 Days Vs Air Quality
Simi Valley, California, United States
2025
85%
190
15%
34
Total number of days with different AQI categories in last 225 days in 2025 (140 days remaining)
Good
190 DaysModerate
34 DaysPoor
0 DaysUnhealthy
0 DaysSevere
0 DaysHazardous
0 DaysUnder WHO’s Safe Air Quality Limits: 85%
Health Risk Level:
Low
In 2025, 85% of 225 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
Simi Valley, 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
46AQI
46AQI
2nd January 2025
35AQI
35AQI
3rd January 2025
47AQI
47AQI
4th January 2025
38AQI
38AQI
5th January 2025
29AQI
29AQI
6th January 2025
29AQI
29AQI
7th January 2025
37AQI
37AQI
8th January 2025
56AQI
56AQI
9th January 2025
35AQI
35AQI
10th January 2025
40AQI
40AQI
11th January 2025
40AQI
40AQI
12th January 2025
30AQI
30AQI
13th January 2025
32AQI
32AQI
14th January 2025
30AQI
30AQI
15th January 2025
30AQI
30AQI
16th January 2025
29AQI
29AQI
17th January 2025
38AQI
38AQI
18th January 2025
49AQI
49AQI
19th January 2025
57AQI
57AQI
20th January 2025
50AQI
50AQI
21st January 2025
32AQI
32AQI
22nd January 2025
36AQI
36AQI
23rd January 2025
36AQI
36AQI
24th January 2025
32AQI
32AQI
25th January 2025
46AQI
46AQI
26th January 2025
27AQI
27AQI
27th January 2025
27AQI
27AQI
28th January 2025
34AQI
34AQI
29th January 2025
47AQI
47AQI
30th January 2025
49AQI
49AQI
31st January 2025
50AQI
50AQI
1st February 2025
43AQI
43AQI
2nd February 2025
44AQI
44AQI
3rd February 2025
44AQI
44AQI
4th February 2025
28AQI
28AQI
5th February 2025
22AQI
22AQI
6th February 2025
23AQI
23AQI
7th February 2025
26AQI
26AQI
8th February 2025
28AQI
28AQI
9th February 2025
30AQI
30AQI
10th February 2025
34AQI
34AQI
11th February 2025
32AQI
32AQI
12th February 2025
30AQI
30AQI
13th February 2025
25AQI
25AQI
14th February 2025
30AQI
30AQI
15th February 2025
33AQI
33AQI
16th February 2025
31AQI
31AQI
17th February 2025
35AQI
35AQI
18th February 2025
34AQI
34AQI
19th February 2025
33AQI
33AQI
20th February 2025
35AQI
35AQI
21st February 2025
30AQI
30AQI
22nd February 2025
30AQI
30AQI
23rd February 2025
33AQI
33AQI
24th February 2025
36AQI
36AQI
25th February 2025
35AQI
35AQI
26th February 2025
34AQI
34AQI
27th February 2025
29AQI
29AQI
28th February 2025
30AQI
30AQI
1st March 2025
36AQI
36AQI
2nd March 2025
38AQI
38AQI
3rd March 2025
26AQI
26AQI
4th March 2025
31AQI
31AQI
5th March 2025
35AQI
35AQI
6th March 2025
30AQI
30AQI
7th March 2025
27AQI
27AQI
8th March 2025
31AQI
31AQI
9th March 2025
34AQI
34AQI
10th March 2025
32AQI
32AQI
11th March 2025
29AQI
29AQI
12th March 2025
27AQI
27AQI
13th March 2025
22AQI
22AQI
14th March 2025
19AQI
19AQI
15th March 2025
22AQI
22AQI
16th March 2025
33AQI
33AQI
17th March 2025
31AQI
31AQI
18th March 2025
19AQI
19AQI
19th March 2025
19AQI
19AQI
20th March 2025
20AQI
20AQI
21st March 2025
22AQI
22AQI
22nd March 2025
28AQI
28AQI
23rd March 2025
40AQI
40AQI
24th March 2025
33AQI
33AQI
25th March 2025
37AQI
37AQI
26th March 2025
29AQI
29AQI
27th March 2025
23AQI
23AQI
28th March 2025
31AQI
31AQI
29th March 2025
33AQI
33AQI
30th March 2025
31AQI
31AQI
31st March 2025
18AQI
18AQI
1st April 2025
25AQI
25AQI
2nd April 2025
22AQI
22AQI
3rd April 2025
30AQI
30AQI
4th April 2025
27AQI
27AQI
5th April 2025
18AQI
18AQI
6th April 2025
24AQI
24AQI
7th April 2025
31AQI
31AQI
8th April 2025
41AQI
41AQI
9th April 2025
41AQI
41AQI
10th April 2025
48AQI
48AQI
11th April 2025
46AQI
46AQI
12th April 2025
53AQI
53AQI
13th April 2025
57AQI
57AQI
14th April 2025
53AQI
53AQI
15th April 2025
50AQI
50AQI
16th April 2025
36AQI
36AQI
17th April 2025
30AQI
30AQI
18th April 2025
31AQI
31AQI
19th April 2025
33AQI
33AQI
20th April 2025
32AQI
32AQI
21st April 2025
44AQI
44AQI
22nd April 2025
55AQI
55AQI
23rd April 2025
48AQI
48AQI
24th April 2025
42AQI
42AQI
25th April 2025
42AQI
42AQI
26th April 2025
19AQI
19AQI
27th April 2025
19AQI
19AQI
28th April 2025
26AQI
26AQI
29th April 2025
31AQI
31AQI
30th April 2025
54AQI
54AQI
1st May 2025
50AQI
50AQI
2nd May 2025
44AQI
44AQI
3rd May 2025
42AQI
42AQI
4th May 2025
34AQI
34AQI
5th May 2025
45AQI
45AQI
6th May 2025
43AQI
43AQI
7th May 2025
36AQI
36AQI
8th May 2025
43AQI
43AQI
9th May 2025
41AQI
41AQI
10th May 2025
39AQI
39AQI
11th May 2025
35AQI
35AQI
12th May 2025
46AQI
46AQI
13th May 2025
24AQI
24AQI
14th May 2025
27AQI
27AQI
15th May 2025
46AQI
46AQI
16th May 2025
53AQI
53AQI
17th May 2025
47AQI
47AQI
18th May 2025
32AQI
32AQI
19th May 2025
38AQI
38AQI
20th May 2025
41AQI
41AQI
21st May 2025
39AQI
39AQI
22nd May 2025
53AQI
53AQI
23rd May 2025
54AQI
54AQI
24th May 2025
53AQI
53AQI
25th May 2025
48AQI
48AQI
26th May 2025
44AQI
44AQI
27th May 2025
45AQI
45AQI
28th May 2025
43AQI
43AQI
29th May 2025
44AQI
44AQI
30th May 2025
45AQI
45AQI
31st May 2025
47AQI
47AQI
1st June 2025
42AQI
42AQI
2nd June 2025
36AQI
36AQI
3rd June 2025
31AQI
31AQI
4th June 2025
29AQI
29AQI
5th June 2025
40AQI
40AQI
6th June 2025
34AQI
34AQI
7th June 2025
38AQI
38AQI
8th June 2025
33AQI
33AQI
9th June 2025
44AQI
44AQI
10th June 2025
45AQI
45AQI
11th June 2025
37AQI
37AQI
12th June 2025
51AQI
51AQI
13th June 2025
52AQI
52AQI
14th June 2025
50AQI
50AQI
15th June 2025
51AQI
51AQI
16th June 2025
55AQI
55AQI
17th June 2025
57AQI
57AQI
18th June 2025
56AQI
56AQI
19th June 2025
55AQI
55AQI
20th June 2025
55AQI
55AQI
21st June 2025
58AQI
58AQI
22nd June 2025
58AQI
58AQI
23rd June 2025
53AQI
53AQI
24th June 2025
49AQI
49AQI
25th June 2025
44AQI
44AQI
26th June 2025
46AQI
46AQI
27th June 2025
51AQI
51AQI
28th June 2025
46AQI
46AQI
29th June 2025
37AQI
37AQI
30th June 2025
32AQI
32AQI
1st July 2025
34AQI
34AQI
2nd July 2025
40AQI
40AQI
3rd July 2025
40AQI
40AQI
4th July 2025
47AQI
47AQI
5th July 2025
68AQI
68AQI
6th July 2025
52AQI
52AQI
7th July 2025
44AQI
44AQI
8th July 2025
39AQI
39AQI
9th July 2025
35AQI
35AQI
10th July 2025
37AQI
37AQI
11th July 2025
48AQI
48AQI
12th July 2025
54AQI
54AQI
13th July 2025
45AQI
45AQI
14th July 2025
34AQI
34AQI
15th July 2025
37AQI
37AQI
16th July 2025
36AQI
36AQI
17th July 2025
25AQI
25AQI
18th July 2025
26AQI
26AQI
19th July 2025
34AQI
34AQI
20th July 2025
43AQI
43AQI
21st July 2025
32AQI
32AQI
22nd July 2025
25AQI
25AQI
23rd July 2025
22AQI
22AQI
24th July 2025
18AQI
18AQI
25th July 2025
18AQI
18AQI
26th July 2025
21AQI
21AQI
27th July 2025
22AQI
22AQI
28th July 2025
22AQI
22AQI
29th July 2025
25AQI
25AQI
30th July 2025
27AQI
27AQI
31st July 2025
39AQI
39AQI
1st August 2025
41AQI
41AQI
2nd August 2025
41AQI
41AQI
3rd August 2025
48AQI
48AQI
4th August 2025
58AQI
58AQI
5th August 2025
65AQI
65AQI
6th August 2025
62AQI
62AQI
7th August 2025
57AQI
57AQI
8th August 2025
58AQI
58AQI
9th August 2025
53AQI
53AQI
10th August 2025
53AQI
53AQI
11th August 2025
49AQI
49AQI
12th August 2025
54AQI
54AQI
38AQI
32AQI
29AQI
37AQI
43AQI
46AQI
35AQI
53AQI
No. of days
Jan.Feb.Mar.Apr.MayJun.Jul.Aug.Sep.Oct.Nov.Dec.Total Days
202538AQI
29
2
28
31
25
5
27
4
18
12
28
3
4
8
190
34
Highest AQI recorded in
August53AQI
Lowest AQI recorded in
March29AQI
202438AQI
30
1
29
30
1
25
5
20
11
25
4
28
3
30
1
30
26
5
26
4
26
5
325
40
Highest AQI recorded in
May46AQI
Lowest AQI recorded in
February28AQI
202336AQI
30
28
31
29
1
27
4
30
21
9
1
29
2
24
6
30
1
27
2
31
337
25
1
Highest AQI recorded in
July49AQI
Lowest AQI recorded in
January30AQI
202238AQI
28
2
22
31
24
6
23
8
20
10
20
2
1
1
24
5
26
5
28
2
31
278
41
Highest AQI recorded in
June47AQI
Lowest AQI recorded in
December29AQI
202141AQI
29
1
25
3
30
1
25
5
25
6
25
5
19
12
22
9
21
9
29
2
21
8
1
26
5
297
66
1
Highest AQI recorded in
July47AQI
Lowest AQI recorded in
January32AQI
202041AQI
13
20
18
30
25
6
23
8
9
21
16
14
28
2
30
1
212
52
Highest AQI recorded in
September58AQI
Lowest AQI recorded in
March28AQI
Most & Least Polluted Years Over the Last 6 Years
Most Polluted Year Recorded
2021(Avg.)
41AQILeast Polluted Year Recorded
2023(Avg.)
36AQISimi Valley's annual 2025 AQI (38) shows an average percentage change of -2.07% (improved AQI) compared to previous years: 2020 (41), 2021 (41), 2022 (38), 2023 (36), 2024 (38).
