San Jose, 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
San Jose, California, United States
2021
2022
2023
2024
2025
AQI
.
Days
AQI Trends: Highest and Lowest
Highest AQI recorded on
28th Aug 2021
119AQILowest AQI recorded on
17th Aug 2024
14AQISame Day Analysis (9th August ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 1st highest AQI at 47 of Good air quality on the same day.
Download 2024 Annual Data
World Air Quality Report
Day & Night AQI Trend: 10th Aug - 11th Aug 2025
San Jose, California, United States
AQI
Day
Night
.
6 AM10th Aug 2025
8 PM
5 AM11th Aug 2025
Day time
Avg. Highest Time
1PM10th Aug
49AQI
Avg. Lowest Time
11AM10th Aug
39AQI
Night time
Avg. Highest Time
9PM10th Aug
45AQI
Avg. Lowest Time
12AM11th Aug
40AQI
In the last 24 hours,
San Jose's AQI reached its highest point of 49 at 1 PM during the Day, while the lowest point, undefined, was recorded at 5 AM during the Night between 10th Aug and 11th Aug 2025.
Day & Night AQI Trend : Jul - Aug 2025
San Jose, 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 2025496 AMAQI
12th Jul 2025487 AMAQI
12th Jul 2025388 AMAQI
12th Jul 2025389 AMAQI
12th Jul 20254310 AMAQI
12th Jul 20253911 AMAQI
12th Jul 20253812 PMAQI
12th Jul 2025401 PMAQI
12th Jul 2025442 PMAQI
12th Jul 2025453 PMAQI
12th Jul 2025444 PMAQI
12th Jul 2025455 PMAQI
12th Jul 2025456 PMAQI
12th Jul 2025457 PMAQI
12th Jul 2025468 PMAQI
12th Jul 2025469 PMAQI
12th Jul 20254610 PMAQI
12th Jul 20254611 PMAQI
13th Jul 20254612 AMAQI
13th Jul 2025461 AMAQI
13th Jul 2025452 AMAQI
13th Jul 2025443 AMAQI
13th Jul 2025414 AMAQI
13th Jul 2025415 AMAQI
24°C17/33°C
13th Jul 2025426 AMAQI
13th Jul 2025407 AMAQI
13th Jul 2025418 AMAQI
13th Jul 2025399 AMAQI
13th Jul 20253710 AMAQI
13th Jul 20254111 AMAQI
13th Jul 20254312 PMAQI
13th Jul 2025461 PMAQI
13th Jul 2025522 PMAQI
13th Jul 2025513 PMAQI
13th Jul 2025514 PMAQI
13th Jul 2025505 PMAQI
13th Jul 2025486 PMAQI
13th Jul 2025447 PMAQI
13th Jul 2025438 PMAQI
13th Jul 2025419 PMAQI
13th Jul 20254110 PMAQI
13th Jul 20254011 PMAQI
14th Jul 20253912 AMAQI
14th Jul 2025381 AMAQI
14th Jul 2025342 AMAQI
14th Jul 2025343 AMAQI
14th Jul 2025274 AMAQI
14th Jul 2025285 AMAQI
23°C16/34°C
14th Jul 2025236 AMAQI
14th Jul 2025307 AMAQI
14th Jul 2025348 AMAQI
14th Jul 2025399 AMAQI
14th Jul 20253810 AMAQI
14th Jul 20253911 AMAQI
14th Jul 20253812 PMAQI
14th Jul 2025361 PMAQI
14th Jul 2025392 PMAQI
14th Jul 2025343 PMAQI
14th Jul 2025394 PMAQI
14th Jul 2025415 PMAQI
14th Jul 2025396 PMAQI
14th Jul 2025387 PMAQI
14th Jul 2025368 PMAQI
14th Jul 2025349 PMAQI
14th Jul 20253010 PMAQI
14th Jul 20253011 PMAQI
15th Jul 20252912 AMAQI
15th Jul 2025301 AMAQI
15th Jul 2025302 AMAQI
15th Jul 2025303 AMAQI
15th Jul 2025194 AMAQI
15th Jul 2025205 AMAQI
24°C16/34°C
15th Jul 2025226 AMAQI
15th Jul 2025247 AMAQI
15th Jul 2025218 AMAQI
15th Jul 2025249 AMAQI
15th Jul 20252410 AMAQI
15th Jul 20252411 AMAQI
15th Jul 20252312 PMAQI
15th Jul 2025251 PMAQI
15th Jul 2025292 PMAQI
15th Jul 2025283 PMAQI
15th Jul 2025284 PMAQI
15th Jul 2025285 PMAQI
15th Jul 2025286 PMAQI
15th Jul 2025287 PMAQI
15th Jul 2025308 PMAQI
15th Jul 2025319 PMAQI
15th Jul 20253010 PMAQI
15th Jul 20253011 PMAQI
16th Jul 20253012 AMAQI
16th Jul 2025301 AMAQI
16th Jul 2025302 AMAQI
16th Jul 2025273 AMAQI
16th Jul 2025234 AMAQI
16th Jul 2025245 AMAQI
21°C15/29°C
16th Jul 2025256 AMAQI
16th Jul 2025277 AMAQI
16th Jul 2025278 AMAQI
16th Jul 2025279 AMAQI
16th Jul 20252510 AMAQI
16th Jul 20252611 AMAQI
16th Jul 20252412 PMAQI
16th Jul 2025231 PMAQI
16th Jul 2025232 PMAQI
16th Jul 2025233 PMAQI
16th Jul 2025264 PMAQI
16th Jul 2025285 PMAQI
16th Jul 2025286 PMAQI
16th Jul 2025277 PMAQI
16th Jul 2025288 PMAQI
16th Jul 2025279 PMAQI
16th Jul 20252710 PMAQI
16th Jul 20252611 PMAQI
17th Jul 20252712 AMAQI
17th Jul 2025251 AMAQI
17th Jul 2025242 AMAQI
17th Jul 2025263 AMAQI
17th Jul 2025244 AMAQI
17th Jul 2025225 AMAQI
20°C14/27°C
17th Jul 2025236 AMAQI
17th Jul 2025247 AMAQI
17th Jul 2025288 AMAQI
17th Jul 2025349 AMAQI
17th Jul 20253010 AMAQI
17th Jul 20253111 AMAQI
17th Jul 20252912 PMAQI
17th Jul 2025301 PMAQI
17th Jul 2025312 PMAQI
17th Jul 2025313 PMAQI
17th Jul 2025324 PMAQI
17th Jul 2025325 PMAQI
17th Jul 2025326 PMAQI
17th Jul 2025287 PMAQI
17th Jul 2025278 PMAQI
17th Jul 2025269 PMAQI
17th Jul 20252510 PMAQI
17th Jul 20252511 PMAQI
18th Jul 20252512 AMAQI
18th Jul 2025241 AMAQI
18th Jul 2025222 AMAQI
18th Jul 2025223 AMAQI
18th Jul 2025194 AMAQI
18th Jul 2025195 AMAQI
21°C15/31°C
18th Jul 2025226 AMAQI
18th Jul 2025227 AMAQI
18th Jul 2025228 AMAQI
18th Jul 2025259 AMAQI
18th Jul 20252610 AMAQI
18th Jul 20252911 AMAQI
18th Jul 20252812 PMAQI
18th Jul 2025301 PMAQI
18th Jul 2025302 PMAQI
18th Jul 2025293 PMAQI
18th Jul 2025314 PMAQI
18th Jul 2025315 PMAQI
18th Jul 2025306 PMAQI
18th Jul 2025277 PMAQI
18th Jul 2025288 PMAQI
18th Jul 2025279 PMAQI
18th Jul 20252610 PMAQI
18th Jul 20252511 PMAQI
19th Jul 20252412 AMAQI
19th Jul 2025241 AMAQI
19th Jul 2025252 AMAQI
19th Jul 2025273 AMAQI
19th Jul 2025284 AMAQI
19th Jul 2025295 AMAQI
21°C15/30°C
19th Jul 2025326 AMAQI
19th Jul 2025307 AMAQI
19th Jul 2025308 AMAQI
19th Jul 2025309 AMAQI
19th Jul 20252910 AMAQI
19th Jul 20252911 AMAQI
19th Jul 20253312 PMAQI
19th Jul 2025351 PMAQI
19th Jul 2025352 PMAQI
19th Jul 2025333 PMAQI
19th Jul 2025324 PMAQI
19th Jul 2025315 PMAQI
19th Jul 2025326 PMAQI
19th Jul 2025317 PMAQI
19th Jul 2025318 PMAQI
19th Jul 2025289 PMAQI
19th Jul 20252810 PMAQI
19th Jul 20253011 PMAQI
20th Jul 20253112 AMAQI
20th Jul 2025291 AMAQI
20th Jul 2025302 AMAQI
20th Jul 2025273 AMAQI
20th Jul 2025284 AMAQI
20th Jul 2025305 AMAQI
20°C14/29°C
20th Jul 2025346 AMAQI
20th Jul 2025327 AMAQI
20th Jul 2025308 AMAQI
20th Jul 2025289 AMAQI
20th Jul 20252610 AMAQI
20th Jul 20252411 AMAQI
20th Jul 20252612 PMAQI
20th Jul 2025261 PMAQI
20th Jul 2025252 PMAQI
20th Jul 2025273 PMAQI
20th Jul 2025294 PMAQI
20th Jul 2025285 PMAQI
20th Jul 2025316 PMAQI
20th Jul 2025307 PMAQI
20th Jul 2025308 PMAQI
20th Jul 2025319 PMAQI
20th Jul 20253010 PMAQI
20th Jul 20253511 PMAQI
21st Jul 20253312 AMAQI
21st Jul 2025331 AMAQI
21st Jul 2025322 AMAQI
21st Jul 2025313 AMAQI
21st Jul 2025334 AMAQI
21st Jul 2025295 AMAQI
20°C14/28°C
21st Jul 2025306 AMAQI
21st Jul 2025317 AMAQI
21st Jul 2025308 AMAQI
21st Jul 2025339 AMAQI
21st Jul 20253310 AMAQI
21st Jul 20253311 AMAQI
21st Jul 20253112 PMAQI
21st Jul 2025271 PMAQI
21st Jul 2025332 PMAQI
21st Jul 2025333 PMAQI
21st Jul 2025334 PMAQI
21st Jul 2025305 PMAQI
21st Jul 2025286 PMAQI
21st Jul 2025317 PMAQI
21st Jul 2025308 PMAQI
21st Jul 2025269 PMAQI
21st Jul 20252710 PMAQI
21st Jul 20252711 PMAQI
22nd Jul 20252612 AMAQI
22nd Jul 2025251 AMAQI
22nd Jul 2025232 AMAQI
22nd Jul 2025243 AMAQI
22nd Jul 2025214 AMAQI
22nd Jul 2025185 AMAQI
17°C14/22°C
22nd Jul 2025186 AMAQI
22nd Jul 2025217 AMAQI
22nd Jul 2025218 AMAQI
22nd Jul 2025229 AMAQI
22nd Jul 20252210 AMAQI
22nd Jul 20252011 AMAQI
22nd Jul 20252012 PMAQI
22nd Jul 2025201 PMAQI
22nd Jul 2025202 PMAQI
22nd Jul 2025233 PMAQI
22nd Jul 2025224 PMAQI
22nd Jul 2025235 PMAQI
22nd Jul 2025236 PMAQI
22nd Jul 2025237 PMAQI
22nd Jul 2025238 PMAQI
22nd Jul 2025249 PMAQI
22nd Jul 20252310 PMAQI
22nd Jul 20252211 PMAQI
23rd Jul 20252412 AMAQI
23rd Jul 2025241 AMAQI
23rd Jul 2025222 AMAQI
23rd Jul 2025213 AMAQI
23rd Jul 2025214 AMAQI
23rd Jul 2025305 AMAQI
17°C14/22°C
23rd Jul 2025316 AMAQI
23rd Jul 2025297 AMAQI
23rd Jul 2025288 AMAQI
23rd Jul 2025289 AMAQI
23rd Jul 20252610 AMAQI
23rd Jul 20252411 AMAQI
23rd Jul 20252312 PMAQI
23rd Jul 2025221 PMAQI
23rd Jul 2025262 PMAQI
23rd Jul 2025283 PMAQI
23rd Jul 2025284 PMAQI
23rd Jul 2025285 PMAQI
23rd Jul 2025276 PMAQI
23rd Jul 2025267 PMAQI
23rd Jul 2025278 PMAQI
23rd Jul 2025289 PMAQI
23rd Jul 20252810 PMAQI
23rd Jul 20252711 PMAQI
24th Jul 20252612 AMAQI
24th Jul 2025241 AMAQI
24th Jul 2025222 AMAQI
24th Jul 2025203 AMAQI
24th Jul 2025174 AMAQI
24th Jul 2025185 AMAQI
19°C15/26°C
24th Jul 2025206 AMAQI
24th Jul 2025227 AMAQI
24th Jul 2025238 AMAQI
24th Jul 2025229 AMAQI
24th Jul 20252510 AMAQI
24th Jul 20252611 AMAQI
24th Jul 20252512 PMAQI
24th Jul 2025261 PMAQI
24th Jul 2025312 PMAQI
24th Jul 2025273 PMAQI
24th Jul 2025274 PMAQI
24th Jul 2025285 PMAQI
24th Jul 2025306 PMAQI
24th Jul 2025267 PMAQI
24th Jul 2025268 PMAQI
24th Jul 2025269 PMAQI
24th Jul 20252510 PMAQI
24th Jul 20252611 PMAQI
25th Jul 20252612 AMAQI
25th Jul 2025231 AMAQI
25th Jul 2025212 AMAQI
25th Jul 2025203 AMAQI
25th Jul 2025184 AMAQI
25th Jul 2025215 AMAQI
19°C15/26°C
25th Jul 2025206 AMAQI
25th Jul 2025227 AMAQI
25th Jul 2025248 AMAQI
25th Jul 2025259 AMAQI
25th Jul 20252410 AMAQI
25th Jul 20252211 AMAQI
25th Jul 20252012 PMAQI
25th Jul 2025191 PMAQI
25th Jul 2025212 PMAQI
25th Jul 2025223 PMAQI
25th Jul 2025254 PMAQI
25th Jul 2025265 PMAQI
25th Jul 2025276 PMAQI
25th Jul 2025257 PMAQI
25th Jul 2025238 PMAQI
25th Jul 2025239 PMAQI
25th Jul 20252310 PMAQI
25th Jul 20252311 PMAQI
26th Jul 20252412 AMAQI
26th Jul 2025251 AMAQI
26th Jul 2025242 AMAQI
26th Jul 2025223 AMAQI
26th Jul 2025214 AMAQI
26th Jul 2025225 AMAQI
18°C14/25°C
26th Jul 2025226 AMAQI
26th Jul 2025227 AMAQI
26th Jul 2025218 AMAQI
26th Jul 2025229 AMAQI
26th Jul 20252110 AMAQI
26th Jul 20252511 AMAQI
26th Jul 20252612 PMAQI
26th Jul 2025241 PMAQI
26th Jul 2025262 PMAQI
26th Jul 2025263 PMAQI
26th Jul 2025274 PMAQI
26th Jul 2025265 PMAQI
26th Jul 2025276 PMAQI
26th Jul 2025277 PMAQI
26th Jul 2025248 PMAQI
26th Jul 2025249 PMAQI
26th Jul 20252410 PMAQI
26th Jul 20252511 PMAQI
27th Jul 20252412 AMAQI
27th Jul 2025241 AMAQI
27th Jul 2025222 AMAQI
27th Jul 2025213 AMAQI
27th Jul 2025214 AMAQI
27th Jul 2025235 AMAQI
19°C14/26°C
27th Jul 2025236 AMAQI
27th Jul 2025227 AMAQI
27th Jul 2025208 AMAQI
27th Jul 2025219 AMAQI
27th Jul 20252210 AMAQI
27th Jul 20252111 AMAQI
27th Jul 20252112 PMAQI
27th Jul 2025181 PMAQI
27th Jul 2025182 PMAQI
27th Jul 2025203 PMAQI
27th Jul 2025204 PMAQI
27th Jul 2025205 PMAQI
27th Jul 2025226 PMAQI
27th Jul 2025237 PMAQI
27th Jul 2025238 PMAQI
27th Jul 2025249 PMAQI
27th Jul 20252410 PMAQI
27th Jul 20252411 PMAQI
28th Jul 20252612 AMAQI
28th Jul 2025251 AMAQI
28th Jul 2025252 AMAQI
28th Jul 2025253 AMAQI
28th Jul 2025214 AMAQI
28th Jul 2025185 AMAQI
18°C14/26°C
28th Jul 2025206 AMAQI
28th Jul 2025247 AMAQI
28th Jul 2025288 AMAQI
28th Jul 2025259 AMAQI
28th Jul 20253210 AMAQI
28th Jul 20252511 AMAQI
28th Jul 20252512 PMAQI
28th Jul 2025301 PMAQI
28th Jul 2025322 PMAQI
28th Jul 2025303 PMAQI
28th Jul 2025294 PMAQI
28th Jul 2025295 PMAQI
28th Jul 2025316 PMAQI
28th Jul 2025287 PMAQI
28th Jul 2025288 PMAQI
28th Jul 2025329 PMAQI
28th Jul 20253210 PMAQI
28th Jul 20253211 PMAQI
29th Jul 20253312 AMAQI
29th Jul 2025321 AMAQI
29th Jul 2025312 AMAQI
29th Jul 2025313 AMAQI
29th Jul 2025324 AMAQI
29th Jul 2025305 AMAQI
21°C14/30°C
29th Jul 2025316 AMAQI
29th Jul 2025327 AMAQI
29th Jul 2025338 AMAQI
29th Jul 2025309 AMAQI
29th Jul 20252810 AMAQI
29th Jul 20253111 AMAQI
29th Jul 20253412 PMAQI
29th Jul 2025371 PMAQI
29th Jul 2025322 PMAQI
29th Jul 2025353 PMAQI
29th Jul 2025364 PMAQI
29th Jul 2025345 PMAQI
29th Jul 2025356 PMAQI
29th Jul 2025357 PMAQI
29th Jul 2025338 PMAQI
29th Jul 2025349 PMAQI
29th Jul 20253510 PMAQI
29th Jul 20253511 PMAQI
30th Jul 20253612 AMAQI
30th Jul 2025351 AMAQI
30th Jul 2025332 AMAQI
30th Jul 2025313 AMAQI
30th Jul 2025294 AMAQI
30th Jul 2025305 AMAQI
22°C16/31°C
30th Jul 2025316 AMAQI
30th Jul 2025317 AMAQI
30th Jul 2025328 AMAQI
30th Jul 2025339 AMAQI
30th Jul 20253110 AMAQI
30th Jul 20252911 AMAQI
30th Jul 20253512 PMAQI
30th Jul 2025371 PMAQI
30th Jul 2025392 PMAQI
30th Jul 2025393 PMAQI
30th Jul 2025394 PMAQI
30th Jul 2025395 PMAQI
30th Jul 2025396 PMAQI
30th Jul 2025397 PMAQI
30th Jul 2025388 PMAQI
30th Jul 2025369 PMAQI
30th Jul 20253510 PMAQI
30th Jul 20253311 PMAQI
31st Jul 20253312 AMAQI
31st Jul 2025331 AMAQI
31st Jul 2025312 AMAQI
31st Jul 2025303 AMAQI
31st Jul 2025254 AMAQI
31st Jul 2025265 AMAQI
20°C15/29°C
31st Jul 2025296 AMAQI
31st Jul 2025327 AMAQI
31st Jul 2025358 AMAQI
31st Jul 2025379 AMAQI
31st Jul 20254110 AMAQI
31st Jul 20253811 AMAQI
31st Jul 20253612 PMAQI
31st Jul 2025321 PMAQI
31st Jul 2025362 PMAQI
31st Jul 2025373 PMAQI
31st Jul 2025404 PMAQI
31st Jul 2025445 PMAQI
31st Jul 2025466 PMAQI
31st Jul 2025357 PMAQI
31st Jul 2025378 PMAQI
31st Jul 2025399 PMAQI
31st Jul 20253810 PMAQI
31st Jul 20253511 PMAQI
1st Aug 20253412 AMAQI
1st Aug 2025311 AMAQI
1st Aug 2025292 AMAQI
1st Aug 2025293 AMAQI
1st Aug 2025314 AMAQI
1st Aug 2025365 AMAQI
21°C16/31°C
1st Aug 2025366 AMAQI
1st Aug 2025397 AMAQI
1st Aug 2025378 AMAQI
1st Aug 2025359 AMAQI
1st Aug 20253410 AMAQI
1st Aug 20253311 AMAQI
1st Aug 20253512 PMAQI
1st Aug 2025351 PMAQI
1st Aug 2025382 PMAQI
1st Aug 2025423 PMAQI
1st Aug 2025434 PMAQI
1st Aug 2025435 PMAQI
1st Aug 2025456 PMAQI
1st Aug 2025387 PMAQI
1st Aug 2025408 PMAQI
1st Aug 2025389 PMAQI
1st Aug 20253810 PMAQI
1st Aug 20254011 PMAQI
2nd Aug 20254212 AMAQI
2nd Aug 2025391 AMAQI
2nd Aug 2025402 AMAQI
2nd Aug 2025373 AMAQI
2nd Aug 2025394 AMAQI
2nd Aug 2025395 AMAQI
21°C15/30°C
2nd Aug 2025406 AMAQI
2nd Aug 2025407 AMAQI
2nd Aug 2025378 AMAQI
2nd Aug 2025369 AMAQI
2nd Aug 20253610 AMAQI
2nd Aug 20253911 AMAQI
2nd Aug 20254012 PMAQI
2nd Aug 2025411 PMAQI
2nd Aug 2025362 PMAQI
2nd Aug 2025453 PMAQI
2nd Aug 2025474 PMAQI
2nd Aug 2025435 PMAQI
2nd Aug 2025396 PMAQI
2nd Aug 2025397 PMAQI
2nd Aug 2025368 PMAQI
2nd Aug 2025279 PMAQI
2nd Aug 20252810 PMAQI
2nd Aug 20253011 PMAQI
3rd Aug 20252912 AMAQI
3rd Aug 2025271 AMAQI
3rd Aug 2025312 AMAQI
3rd Aug 2025363 AMAQI
3rd Aug 2025354 AMAQI
3rd Aug 2025345 AMAQI
20°C14/29°C
3rd Aug 2025346 AMAQI
3rd Aug 2025357 AMAQI
3rd Aug 2025278 AMAQI
3rd Aug 2025289 AMAQI
3rd Aug 20253210 AMAQI
3rd Aug 20253411 AMAQI
3rd Aug 20253112 PMAQI
3rd Aug 2025321 PMAQI
3rd Aug 2025332 PMAQI
3rd Aug 2025343 PMAQI
3rd Aug 2025344 PMAQI
3rd Aug 2025365 PMAQI
3rd Aug 2025366 PMAQI
3rd Aug 2025307 PMAQI
3rd Aug 2025398 PMAQI
3rd Aug 2025459 PMAQI
3rd Aug 20254310 PMAQI
3rd Aug 20254111 PMAQI
4th Aug 20254212 AMAQI
4th Aug 2025411 AMAQI
4th Aug 2025402 AMAQI
4th Aug 2025353 AMAQI
4th Aug 2025354 AMAQI
4th Aug 2025385 AMAQI
19°C14/27°C
4th Aug 2025416 AMAQI
4th Aug 2025417 AMAQI
4th Aug 2025408 AMAQI
4th Aug 2025429 AMAQI
4th Aug 20254710 AMAQI
4th Aug 20254711 AMAQI
4th Aug 20254212 PMAQI
4th Aug 2025421 PMAQI
4th Aug 2025462 PMAQI
4th Aug 2025493 PMAQI
4th Aug 2025454 PMAQI
4th Aug 2025395 PMAQI
4th Aug 2025366 PMAQI
4th Aug 2025427 PMAQI
4th Aug 2025358 PMAQI
4th Aug 2025319 PMAQI
4th Aug 20253010 PMAQI
4th Aug 20252911 PMAQI
5th Aug 20252812 AMAQI
5th Aug 2025291 AMAQI
5th Aug 2025302 AMAQI
5th Aug 2025273 AMAQI
5th Aug 2025294 AMAQI
5th Aug 2025335 AMAQI
19°C13/27°C
5th Aug 2025356 AMAQI
5th Aug 2025387 AMAQI
5th Aug 2025378 AMAQI
5th Aug 2025379 AMAQI
5th Aug 20254010 AMAQI
5th Aug 20253911 AMAQI
5th Aug 20253912 PMAQI
5th Aug 2025411 PMAQI
5th Aug 2025442 PMAQI
5th Aug 2025403 PMAQI
5th Aug 2025354 PMAQI
5th Aug 2025395 PMAQI
5th Aug 2025386 PMAQI
5th Aug 2025337 PMAQI
5th Aug 2025368 PMAQI
5th Aug 2025389 PMAQI
5th Aug 20253710 PMAQI
5th Aug 20253811 PMAQI
6th Aug 20253812 AMAQI
6th Aug 2025361 AMAQI
6th Aug 2025362 AMAQI
6th Aug 2025403 AMAQI
6th Aug 2025404 AMAQI
6th Aug 2025425 AMAQI
20°C13/28°C
6th Aug 2025436 AMAQI
6th Aug 2025437 AMAQI
6th Aug 2025438 AMAQI
6th Aug 2025439 AMAQI
6th Aug 20254410 AMAQI
6th Aug 20254911 AMAQI
6th Aug 20255212 PMAQI
6th Aug 2025521 PMAQI
6th Aug 2025522 PMAQI
6th Aug 2025513 PMAQI
6th Aug 2025504 PMAQI
6th Aug 2025475 PMAQI
6th Aug 2025426 PMAQI
6th Aug 2025417 PMAQI
6th Aug 2025458 PMAQI
6th Aug 2025439 PMAQI
6th Aug 20254110 PMAQI
6th Aug 20253911 PMAQI
7th Aug 20253712 AMAQI
7th Aug 2025371 AMAQI
7th Aug 2025362 AMAQI
7th Aug 2025333 AMAQI
7th Aug 2025314 AMAQI
7th Aug 2025315 AMAQI
22°C15/32°C
7th Aug 2025316 AMAQI
7th Aug 2025337 AMAQI
7th Aug 2025328 AMAQI
7th Aug 2025369 AMAQI
7th Aug 20253910 AMAQI
7th Aug 20253611 AMAQI
7th Aug 20253512 PMAQI
7th Aug 2025381 PMAQI
7th Aug 2025432 PMAQI
7th Aug 2025383 PMAQI
7th Aug 2025364 PMAQI
7th Aug 2025345 PMAQI
7th Aug 2025356 PMAQI
7th Aug 2025347 PMAQI
7th Aug 2025348 PMAQI
7th Aug 2025319 PMAQI
7th Aug 20253110 PMAQI
7th Aug 20253111 PMAQI
8th Aug 20252912 AMAQI
8th Aug 2025301 AMAQI
8th Aug 2025302 AMAQI
8th Aug 2025323 AMAQI
8th Aug 2025344 AMAQI
8th Aug 2025315 AMAQI
23°C16/33°C
8th Aug 2025306 AMAQI
8th Aug 2025297 AMAQI
8th Aug 2025288 AMAQI
8th Aug 2025289 AMAQI
8th Aug 20252710 AMAQI
8th Aug 20252511 AMAQI
8th Aug 20252912 PMAQI
8th Aug 2025321 PMAQI
8th Aug 2025322 PMAQI
8th Aug 2025343 PMAQI
8th Aug 2025364 PMAQI
8th Aug 2025345 PMAQI
8th Aug 2025386 PMAQI
8th Aug 2025337 PMAQI
8th Aug 2025348 PMAQI
8th Aug 2025409 PMAQI
8th Aug 20254110 PMAQI
8th Aug 20254111 PMAQI
9th Aug 20254212 AMAQI
9th Aug 2025431 AMAQI
9th Aug 2025462 AMAQI
9th Aug 2025443 AMAQI
9th Aug 2025444 AMAQI
9th Aug 2025455 AMAQI
25°C17/36°C
9th Aug 2025466 AMAQI
9th Aug 2025457 AMAQI
9th Aug 2025468 AMAQI
9th Aug 2025459 AMAQI
9th Aug 20254710 AMAQI
9th Aug 20254711 AMAQI
9th Aug 20255012 PMAQI
9th Aug 2025541 PMAQI
9th Aug 2025552 PMAQI
9th Aug 2025533 PMAQI
9th Aug 2025534 PMAQI
9th Aug 2025525 PMAQI
9th Aug 2025506 PMAQI
9th Aug 2025517 PMAQI
9th Aug 2025518 PMAQI
9th Aug 2025489 PMAQI
9th Aug 20254810 PMAQI
9th Aug 20254611 PMAQI
10th Aug 20254412 AMAQI
10th Aug 2025451 AMAQI
10th Aug 2025442 AMAQI
10th Aug 2025403 AMAQI
10th Aug 2025404 AMAQI
10th Aug 2025415 AMAQI
26°C19/36°C
10th Aug 2025446 AMAQI
10th Aug 2025467 AMAQI
10th Aug 2025408 AMAQI
10th Aug 2025399 AMAQI
10th Aug 20254010 AMAQI
10th Aug 20253911 AMAQI
10th Aug 20254612 PMAQI
10th Aug 2025491 PMAQI
10th Aug 2025472 PMAQI
10th Aug 2025463 PMAQI
10th Aug 2025484 PMAQI
10th Aug 2025465 PMAQI
10th Aug 2025466 PMAQI
10th Aug 2025447 PMAQI
10th Aug 2025448 PMAQI
10th Aug 2025459 PMAQI
10th Aug 20254210 PMAQI
10th Aug 20254311 PMAQI
11th Aug 20254012 AMAQI
27°C19/37°C
6 AM
1 PM
8 PM
1 AM
5 AM
--°C/°C
Day time
Avg. Highest Time
2 PM - 6 PM
35AQI
5 hours / Day
150 hours / Month
Avg. Lowest Time
6 AM - 1 PM
32AQI
8 hours / Day
240 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 2 PM to 6 PM (Avg. 35), while the lowest AQI was between 6 AM to 1 PM (Avg. 32).
Night time
Avg. Highest Time
12 AM - 11 PM
31AQI
9 hours / Day
270 hours / Month
Avg. Lowest Time
12 AM - 5 AM
31AQI
6 hours / Day
180 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 12 AM to 11 PM (Avg. 31), while the lowest AQI was between 12 AM to 5 AM (Avg. 31).
2025 Days Vs Air Quality
San Jose, California, United States
2025
89%
196
11%
25
Total number of days with different AQI categories in last 223 days in 2025 (142 days remaining)
Good
196 DaysModerate
25 DaysPoor
0 DaysUnhealthy
0 DaysSevere
0 DaysHazardous
0 DaysUnder WHO’s Safe Air Quality Limits: 89%
Health Risk Level:
Low
In 2025, 89% of 223 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
San Jose, 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
75AQI
75AQI
2nd January 2025
60AQI
60AQI
3rd January 2025
52AQI
52AQI
4th January 2025
43AQI
43AQI
5th January 2025
51AQI
51AQI
6th January 2025
50AQI
50AQI
7th January 2025
31AQI
31AQI
8th January 2025
34AQI
34AQI
9th January 2025
47AQI
47AQI
10th January 2025
48AQI
48AQI
11th January 2025
38AQI
38AQI
12th January 2025
30AQI
30AQI
13th January 2025
42AQI
42AQI
14th January 2025
43AQI
43AQI
15th January 2025
54AQI
54AQI
16th January 2025
61AQI
61AQI
17th January 2025
59AQI
59AQI
18th January 2025
58AQI
58AQI
19th January 2025
64AQI
64AQI
20th January 2025
49AQI
49AQI
21st January 2025
49AQI
49AQI
22nd January 2025
56AQI
56AQI
23rd January 2025
60AQI
60AQI
24th January 2025
68AQI
68AQI
25th January 2025
56AQI
56AQI
26th January 2025
43AQI
43AQI
27th January 2025
43AQI
43AQI
28th January 2025
48AQI
48AQI
29th January 2025
48AQI
48AQI
30th January 2025
49AQI
49AQI
31st January 2025
47AQI
47AQI
1st February 2025
51AQI
51AQI
2nd February 2025
33AQI
33AQI
3rd February 2025
27AQI
27AQI
4th February 2025
23AQI
23AQI
5th February 2025
26AQI
26AQI
6th February 2025
30AQI
30AQI
7th February 2025
25AQI
25AQI
8th February 2025
27AQI
27AQI
9th February 2025
30AQI
30AQI
10th February 2025
33AQI
33AQI
11th February 2025
31AQI
31AQI
12th February 2025
26AQI
26AQI
13th February 2025
24AQI
24AQI
14th February 2025
27AQI
27AQI
15th February 2025
37AQI
37AQI
16th February 2025
40AQI
40AQI
17th February 2025
27AQI
27AQI
18th February 2025
34AQI
34AQI
19th February 2025
34AQI
34AQI
20th February 2025
31AQI
31AQI
21st February 2025
37AQI
37AQI
22nd February 2025
47AQI
47AQI
23rd February 2025
39AQI
39AQI
24th February 2025
38AQI
38AQI
25th February 2025
37AQI
37AQI
26th February 2025
42AQI
42AQI
27th February 2025
47AQI
47AQI
28th February 2025
53AQI
53AQI
1st March 2025
42AQI
42AQI
2nd March 2025
27AQI
27AQI
3rd March 2025
27AQI
27AQI
4th March 2025
27AQI
27AQI
5th March 2025
31AQI
31AQI
6th March 2025
25AQI
25AQI
7th March 2025
35AQI
35AQI
8th March 2025
33AQI
33AQI
9th March 2025
39AQI
39AQI
10th March 2025
36AQI
36AQI
11th March 2025
30AQI
30AQI
12th March 2025
27AQI
27AQI
13th March 2025
25AQI
25AQI
14th March 2025
27AQI
27AQI
15th March 2025
55AQI
55AQI
16th March 2025
48AQI
48AQI
17th March 2025
24AQI
24AQI
18th March 2025
27AQI
27AQI
19th March 2025
27AQI
27AQI
20th March 2025
24AQI
24AQI
21st March 2025
31AQI
31AQI
22nd March 2025
32AQI
32AQI
23rd March 2025
32AQI
32AQI
24th March 2025
32AQI
32AQI
25th March 2025
44AQI
44AQI
26th March 2025
35AQI
35AQI
27th March 2025
26AQI
26AQI
28th March 2025
30AQI
30AQI
29th March 2025
27AQI
27AQI
30th March 2025
21AQI
21AQI
31st March 2025
24AQI
24AQI
1st April 2025
25AQI
25AQI
2nd April 2025
29AQI
29AQI
3rd April 2025
28AQI
28AQI
4th April 2025
28AQI
28AQI
5th April 2025
25AQI
25AQI
6th April 2025
29AQI
29AQI
7th April 2025
21AQI
21AQI
8th April 2025
23AQI
23AQI
9th April 2025
32AQI
32AQI
10th April 2025
33AQI
33AQI
11th April 2025
25AQI
25AQI
12th April 2025
40AQI
40AQI
13th April 2025
47AQI
47AQI
14th April 2025
44AQI
44AQI
15th April 2025
37AQI
37AQI
16th April 2025
41AQI
41AQI
17th April 2025
35AQI
35AQI
18th April 2025
37AQI
37AQI
19th April 2025
40AQI
40AQI
20th April 2025
48AQI
48AQI
21st April 2025
45AQI
45AQI
22nd April 2025
45AQI
45AQI
23rd April 2025
51AQI
51AQI
24th April 2025
43AQI
43AQI
25th April 2025
31AQI
31AQI
26th April 2025
27AQI
27AQI
27th April 2025
29AQI
29AQI
28th April 2025
41AQI
41AQI
29th April 2025
42AQI
42AQI
30th April 2025
45AQI
45AQI
1st May 2025
41AQI
41AQI
2nd May 2025
39AQI
39AQI
3rd May 2025
31AQI
31AQI
4th May 2025
37AQI
37AQI
5th May 2025
40AQI
40AQI
6th May 2025
45AQI
45AQI
7th May 2025
49AQI
49AQI
8th May 2025
45AQI
45AQI
9th May 2025
39AQI
39AQI
10th May 2025
40AQI
40AQI
11th May 2025
32AQI
32AQI
12th May 2025
25AQI
25AQI
13th May 2025
23AQI
23AQI
14th May 2025
28AQI
28AQI
15th May 2025
33AQI
33AQI
16th May 2025
37AQI
37AQI
17th May 2025
36AQI
36AQI
18th May 2025
36AQI
36AQI
19th May 2025
44AQI
44AQI
20th May 2025
34AQI
34AQI
21st May 2025
47AQI
47AQI
22nd May 2025
42AQI
42AQI
23rd May 2025
31AQI
31AQI
24th May 2025
37AQI
37AQI
25th May 2025
26AQI
26AQI
26th May 2025
21AQI
21AQI
27th May 2025
33AQI
33AQI
28th May 2025
37AQI
37AQI
29th May 2025
25AQI
25AQI
30th May 2025
40AQI
40AQI
31st May 2025
51AQI
51AQI
1st June 2025
54AQI
54AQI
2nd June 2025
53AQI
53AQI
3rd June 2025
43AQI
43AQI
4th June 2025
55AQI
55AQI
5th June 2025
49AQI
49AQI
6th June 2025
40AQI
40AQI
7th June 2025
40AQI
40AQI
8th June 2025
33AQI
33AQI
9th June 2025
26AQI
26AQI
10th June 2025
31AQI
31AQI
11th June 2025
50AQI
50AQI
12th June 2025
51AQI
51AQI
13th June 2025
53AQI
53AQI
14th June 2025
50AQI
50AQI
15th June 2025
52AQI
52AQI
16th June 2025
50AQI
50AQI
17th June 2025
44AQI
44AQI
18th June 2025
45AQI
45AQI
19th June 2025
52AQI
52AQI
20th June 2025
48AQI
48AQI
21st June 2025
43AQI
43AQI
22nd June 2025
42AQI
42AQI
23rd June 2025
44AQI
44AQI
24th June 2025
34AQI
34AQI
25th June 2025
29AQI
29AQI
26th June 2025
32AQI
32AQI
27th June 2025
41AQI
41AQI
28th June 2025
44AQI
44AQI
29th June 2025
41AQI
41AQI
30th June 2025
33AQI
33AQI
1st July 2025
35AQI
35AQI
2nd July 2025
31AQI
31AQI
3rd July 2025
44AQI
44AQI
4th July 2025
40AQI
40AQI
5th July 2025
45AQI
45AQI
6th July 2025
39AQI
39AQI
7th July 2025
33AQI
33AQI
8th July 2025
27AQI
27AQI
9th July 2025
24AQI
24AQI
10th July 2025
35AQI
35AQI
11th July 2025
43AQI
43AQI
12th July 2025
44AQI
44AQI
13th July 2025
43AQI
43AQI
14th July 2025
34AQI
34AQI
15th July 2025
24AQI
24AQI
16th July 2025
24AQI
24AQI
17th July 2025
25AQI
25AQI
18th July 2025
24AQI
24AQI
19th July 2025
28AQI
28AQI
20th July 2025
27AQI
27AQI
21st July 2025
29AQI
29AQI
22nd July 2025
19AQI
19AQI
23rd July 2025
21AQI
21AQI
24th July 2025
21AQI
21AQI
25th July 2025
19AQI
19AQI
26th July 2025
21AQI
21AQI
27th July 2025
19AQI
19AQI
28th July 2025
26AQI
26AQI
29th July 2025
33AQI
33AQI
30th July 2025
34AQI
34AQI
31st July 2025
33AQI
33AQI
1st August 2025
33AQI
33AQI
2nd August 2025
35AQI
35AQI
3rd August 2025
34AQI
34AQI
4th August 2025
41AQI
41AQI
5th August 2025
34AQI
34AQI
6th August 2025
43AQI
43AQI
7th August 2025
35AQI
35AQI
8th August 2025
33AQI
33AQI
9th August 2025
47AQI
47AQI
50AQI
34AQI
31AQI
36AQI
36AQI
43AQI
30AQI
37AQI
No. of days
Jan.Feb.Mar.Apr.MayJun.Jul.Aug.Sep.Oct.Nov.Dec.Total Days
202537AQI
18
13
26
2
30
1
29
1
30
1
23
7
31
9
196
25
Highest AQI recorded in
January50AQI
Lowest AQI recorded in
July30AQI
202436AQI
24
1
1
24
2
31
29
1
27
4
24
5
25
6
28
3
29
1
24
7
27
3
14
17
306
50
1
Highest AQI recorded in
December54AQI
Lowest AQI recorded in
March23AQI
202333AQI
30
1
26
2
31
30
31
30
26
5
28
3
25
4
1
29
2
23
6
18
11
2
327
34
3
Highest AQI recorded in
December50AQI
Lowest AQI recorded in
March24AQI
202239AQI
12
18
14
8
31
22
3
31
28
2
23
1
1
22
7
23
8
18
12
19
12
244
71
Highest AQI recorded in
January51AQI
Lowest AQI recorded in
July27AQI
202140AQI
18
12
25
3
30
28
2
25
6
26
4
28
3
20
10
1
18
12
27
4
17
13
21
10
283
79
1
Highest AQI recorded in
September49AQI
Lowest AQI recorded in
June32AQI
202045AQI
13
20
18
30
29
2
18
10
2
1
11
13
2
4
18
11
2
18
12
20
10
1
195
58
5
7
Highest AQI recorded in
September73AQI
Lowest AQI recorded in
May28AQI
Most & Least Polluted Years Over the Last 6 Years
Most Polluted Year Recorded
2020(Avg.)
45AQILeast Polluted Year Recorded
2023(Avg.)
33AQISan Jose's annual 2025 AQI (37) shows an average percentage change of -2.03% (improved AQI) compared to previous years: 2020 (45), 2021 (40), 2022 (39), 2023 (33), 2024 (36).
