Vallejo, 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
Vallejo, California, United States
2021
2022
2023
2024
2025
AQI
.
Days
AQI Trends: Highest and Lowest
Highest AQI recorded on
28th Aug 2021
95AQILowest AQI recorded on
7th Aug 2021
12AQISame Day Analysis (12th August ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 2nd highest AQI at 26 of Good air quality, showing improvement over 2021 on the same day.
Download 2024 Annual Data
World Air Quality Report
Day & Night AQI Trend: 12th Aug - 13th Aug 2025
Vallejo, California, United States
AQI
Day
Night
.
6 AM12th Aug 2025
8 PM
5 AM13th Aug 2025
Day time
Avg. Highest Time
4PM12th Aug
40AQI
Avg. Lowest Time
11AM12th Aug
23AQI
Night time
Avg. Highest Time
12AM13th Aug
36AQI
Avg. Lowest Time
11PM12th Aug
28AQI
In the last 24 hours,
Vallejo's AQI reached its highest point of 40 at 4 PM during the Day, while the lowest point, 23, was recorded at 11 AM during the Day between 12th Aug and 13th Aug 2025.
Day & Night AQI Trend : Jul - Aug 2025
Vallejo, 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 2025206 AMAQI
14th Jul 2025167 AMAQI
14th Jul 2025168 AMAQI
14th Jul 2025159 AMAQI
14th Jul 20251710 AMAQI
14th Jul 20252011 AMAQI
14th Jul 20252412 PMAQI
14th Jul 2025271 PMAQI
14th Jul 2025262 PMAQI
14th Jul 2025263 PMAQI
14th Jul 2025234 PMAQI
14th Jul 2025215 PMAQI
14th Jul 2025216 PMAQI
14th Jul 2025207 PMAQI
14th Jul 2025208 PMAQI
14th Jul 2025209 PMAQI
14th Jul 20252010 PMAQI
14th Jul 20252011 PMAQI
15th Jul 20251912 AMAQI
15th Jul 2025191 AMAQI
15th Jul 2025192 AMAQI
15th Jul 2025213 AMAQI
15th Jul 2025194 AMAQI
15th Jul 2025165 AMAQI
20°C12/30°C
15th Jul 2025146 AMAQI
15th Jul 2025157 AMAQI
15th Jul 2025138 AMAQI
15th Jul 2025159 AMAQI
15th Jul 20251510 AMAQI
15th Jul 20251611 AMAQI
15th Jul 20251712 PMAQI
15th Jul 2025171 PMAQI
15th Jul 2025152 PMAQI
15th Jul 2025183 PMAQI
15th Jul 2025184 PMAQI
15th Jul 2025215 PMAQI
15th Jul 2025246 PMAQI
15th Jul 2025197 PMAQI
15th Jul 2025218 PMAQI
15th Jul 2025289 PMAQI
15th Jul 20253010 PMAQI
15th Jul 20252911 PMAQI
16th Jul 20252512 AMAQI
16th Jul 2025261 AMAQI
16th Jul 2025292 AMAQI
16th Jul 2025273 AMAQI
16th Jul 2025264 AMAQI
16th Jul 2025235 AMAQI
16°C12/21°C
16th Jul 2025216 AMAQI
16th Jul 2025177 AMAQI
16th Jul 2025198 AMAQI
16th Jul 2025209 AMAQI
16th Jul 20252010 AMAQI
16th Jul 20251911 AMAQI
16th Jul 20251812 PMAQI
16th Jul 2025181 PMAQI
16th Jul 2025172 PMAQI
16th Jul 2025183 PMAQI
16th Jul 2025214 PMAQI
16th Jul 2025225 PMAQI
16th Jul 2025226 PMAQI
16th Jul 2025227 PMAQI
16th Jul 2025218 PMAQI
16th Jul 2025209 PMAQI
16th Jul 20251810 PMAQI
16th Jul 20251911 PMAQI
17th Jul 20251912 AMAQI
17th Jul 2025191 AMAQI
17th Jul 2025192 AMAQI
17th Jul 2025183 AMAQI
17th Jul 2025204 AMAQI
17th Jul 2025245 AMAQI
17°C14/22°C
17th Jul 2025246 AMAQI
17th Jul 2025177 AMAQI
17th Jul 2025188 AMAQI
17th Jul 2025199 AMAQI
17th Jul 20251710 AMAQI
17th Jul 20251611 AMAQI
17th Jul 20251812 PMAQI
17th Jul 2025181 PMAQI
17th Jul 2025182 PMAQI
17th Jul 2025193 PMAQI
17th Jul 2025204 PMAQI
17th Jul 2025195 PMAQI
17th Jul 2025186 PMAQI
17th Jul 2025187 PMAQI
17th Jul 2025188 PMAQI
17th Jul 2025219 PMAQI
17th Jul 20251910 PMAQI
17th Jul 20252011 PMAQI
18th Jul 20252012 AMAQI
18th Jul 2025181 AMAQI
18th Jul 2025202 AMAQI
18th Jul 2025223 AMAQI
18th Jul 2025164 AMAQI
18th Jul 2025145 AMAQI
18°C14/27°C
18th Jul 2025156 AMAQI
18th Jul 2025177 AMAQI
18th Jul 2025228 AMAQI
18th Jul 2025209 AMAQI
18th Jul 20251910 AMAQI
18th Jul 20252011 AMAQI
18th Jul 20251912 PMAQI
18th Jul 2025181 PMAQI
18th Jul 2025232 PMAQI
18th Jul 2025243 PMAQI
18th Jul 2025254 PMAQI
18th Jul 2025225 PMAQI
18th Jul 2025236 PMAQI
18th Jul 2025207 PMAQI
18th Jul 2025228 PMAQI
18th Jul 2025239 PMAQI
18th Jul 20252210 PMAQI
18th Jul 20252111 PMAQI
19th Jul 20252112 AMAQI
19th Jul 2025211 AMAQI
19th Jul 2025202 AMAQI
19th Jul 2025193 AMAQI
19th Jul 2025194 AMAQI
19th Jul 2025225 AMAQI
19°C14/28°C
19th Jul 2025226 AMAQI
19th Jul 2025227 AMAQI
19th Jul 2025198 AMAQI
19th Jul 2025209 AMAQI
19th Jul 20251910 AMAQI
19th Jul 20251711 AMAQI
19th Jul 20251812 PMAQI
19th Jul 2025181 PMAQI
19th Jul 2025172 PMAQI
19th Jul 2025203 PMAQI
19th Jul 2025224 PMAQI
19th Jul 2025225 PMAQI
19th Jul 2025226 PMAQI
19th Jul 2025207 PMAQI
19th Jul 2025208 PMAQI
19th Jul 2025219 PMAQI
19th Jul 20252110 PMAQI
19th Jul 20252311 PMAQI
20th Jul 20252412 AMAQI
20th Jul 2025231 AMAQI
20th Jul 2025242 AMAQI
20th Jul 2025243 AMAQI
20th Jul 2025244 AMAQI
20th Jul 2025205 AMAQI
19°C14/28°C
20th Jul 2025216 AMAQI
20th Jul 2025207 AMAQI
20th Jul 2025168 AMAQI
20th Jul 2025159 AMAQI
20th Jul 20251810 AMAQI
20th Jul 20252211 AMAQI
20th Jul 20252512 PMAQI
20th Jul 2025271 PMAQI
20th Jul 2025272 PMAQI
20th Jul 2025263 PMAQI
20th Jul 2025264 PMAQI
20th Jul 2025265 PMAQI
20th Jul 2025286 PMAQI
20th Jul 2025267 PMAQI
20th Jul 2025268 PMAQI
20th Jul 2025329 PMAQI
20th Jul 20253110 PMAQI
20th Jul 20253311 PMAQI
21st Jul 20253212 AMAQI
21st Jul 2025301 AMAQI
21st Jul 2025312 AMAQI
21st Jul 2025323 AMAQI
21st Jul 2025334 AMAQI
21st Jul 2025375 AMAQI
17°C13/26°C
21st Jul 2025366 AMAQI
21st Jul 2025317 AMAQI
21st Jul 2025298 AMAQI
21st Jul 2025279 AMAQI
21st Jul 20252710 AMAQI
21st Jul 20253011 AMAQI
21st Jul 20252612 PMAQI
21st Jul 2025261 PMAQI
21st Jul 2025232 PMAQI
21st Jul 2025233 PMAQI
21st Jul 2025234 PMAQI
21st Jul 2025235 PMAQI
21st Jul 2025236 PMAQI
21st Jul 2025287 PMAQI
21st Jul 2025288 PMAQI
21st Jul 2025229 PMAQI
21st Jul 20252210 PMAQI
21st Jul 20252211 PMAQI
22nd Jul 20252312 AMAQI
22nd Jul 2025221 AMAQI
22nd Jul 2025202 AMAQI
22nd Jul 2025193 AMAQI
22nd Jul 2025144 AMAQI
22nd Jul 2025115 AMAQI
17°C13/22°C
22nd Jul 2025126 AMAQI
22nd Jul 2025167 AMAQI
22nd Jul 2025188 AMAQI
22nd Jul 2025179 AMAQI
22nd Jul 20251610 AMAQI
22nd Jul 20251611 AMAQI
22nd Jul 20251512 PMAQI
22nd Jul 2025131 PMAQI
22nd Jul 2025142 PMAQI
22nd Jul 2025163 PMAQI
22nd Jul 2025154 PMAQI
22nd Jul 2025165 PMAQI
22nd Jul 2025156 PMAQI
22nd Jul 2025177 PMAQI
22nd Jul 2025188 PMAQI
22nd Jul 2025219 PMAQI
22nd Jul 20251810 PMAQI
22nd Jul 20251811 PMAQI
23rd Jul 20251812 AMAQI
23rd Jul 2025171 AMAQI
23rd Jul 2025162 AMAQI
23rd Jul 2025153 AMAQI
23rd Jul 2025144 AMAQI
23rd Jul 2025145 AMAQI
18°C14/24°C
23rd Jul 2025136 AMAQI
23rd Jul 2025197 AMAQI
23rd Jul 2025178 AMAQI
23rd Jul 2025159 AMAQI
23rd Jul 20251410 AMAQI
23rd Jul 20251711 AMAQI
23rd Jul 20251612 PMAQI
23rd Jul 2025161 PMAQI
23rd Jul 2025152 PMAQI
23rd Jul 2025153 PMAQI
23rd Jul 2025164 PMAQI
23rd Jul 2025165 PMAQI
23rd Jul 2025166 PMAQI
23rd Jul 2025177 PMAQI
23rd Jul 2025178 PMAQI
23rd Jul 2025169 PMAQI
23rd Jul 20251610 PMAQI
23rd Jul 20251611 PMAQI
24th Jul 20251712 AMAQI
24th Jul 2025171 AMAQI
24th Jul 2025152 AMAQI
24th Jul 2025143 AMAQI
24th Jul 2025144 AMAQI
24th Jul 2025145 AMAQI
18°C14/25°C
24th Jul 2025156 AMAQI
24th Jul 2025157 AMAQI
24th Jul 2025158 AMAQI
24th Jul 2025149 AMAQI
24th Jul 20251410 AMAQI
24th Jul 20251411 AMAQI
24th Jul 20251512 PMAQI
24th Jul 2025141 PMAQI
24th Jul 2025162 PMAQI
24th Jul 2025163 PMAQI
24th Jul 2025164 PMAQI
24th Jul 2025165 PMAQI
24th Jul 2025156 PMAQI
24th Jul 2025157 PMAQI
24th Jul 2025168 PMAQI
24th Jul 2025159 PMAQI
24th Jul 20251610 PMAQI
24th Jul 20251611 PMAQI
25th Jul 20251612 AMAQI
25th Jul 2025161 AMAQI
25th Jul 2025162 AMAQI
25th Jul 2025163 AMAQI
25th Jul 2025144 AMAQI
25th Jul 2025145 AMAQI
18°C14/26°C
25th Jul 2025136 AMAQI
25th Jul 2025147 AMAQI
25th Jul 2025248 AMAQI
25th Jul 2025209 AMAQI
25th Jul 20251610 AMAQI
25th Jul 20251511 AMAQI
25th Jul 20251512 PMAQI
25th Jul 2025151 PMAQI
25th Jul 2025142 PMAQI
25th Jul 2025163 PMAQI
25th Jul 2025154 PMAQI
25th Jul 2025165 PMAQI
25th Jul 2025166 PMAQI
25th Jul 2025167 PMAQI
25th Jul 2025158 PMAQI
25th Jul 2025169 PMAQI
25th Jul 20251710 PMAQI
25th Jul 20251811 PMAQI
26th Jul 20251812 AMAQI
26th Jul 2025171 AMAQI
26th Jul 2025182 AMAQI
26th Jul 2025203 AMAQI
26th Jul 2025194 AMAQI
26th Jul 2025155 AMAQI
18°C14/23°C
26th Jul 2025146 AMAQI
26th Jul 2025147 AMAQI
26th Jul 2025148 AMAQI
26th Jul 2025169 AMAQI
26th Jul 20252110 AMAQI
26th Jul 20252011 AMAQI
26th Jul 20251712 PMAQI
26th Jul 2025201 PMAQI
26th Jul 2025192 PMAQI
26th Jul 2025173 PMAQI
26th Jul 2025184 PMAQI
26th Jul 2025165 PMAQI
26th Jul 2025156 PMAQI
26th Jul 2025177 PMAQI
26th Jul 2025178 PMAQI
26th Jul 2025159 PMAQI
26th Jul 20251410 PMAQI
26th Jul 20251511 PMAQI
27th Jul 20251612 AMAQI
27th Jul 2025171 AMAQI
27th Jul 2025192 AMAQI
27th Jul 2025193 AMAQI
27th Jul 2025184 AMAQI
27th Jul 2025185 AMAQI
17°C15/23°C
27th Jul 2025196 AMAQI
27th Jul 2025167 AMAQI
27th Jul 2025158 AMAQI
27th Jul 2025149 AMAQI
27th Jul 20251710 AMAQI
27th Jul 20251611 AMAQI
27th Jul 20251812 PMAQI
27th Jul 2025181 PMAQI
27th Jul 2025252 PMAQI
27th Jul 2025223 PMAQI
27th Jul 2025204 PMAQI
27th Jul 2025195 PMAQI
27th Jul 2025206 PMAQI
27th Jul 2025197 PMAQI
27th Jul 2025188 PMAQI
27th Jul 2025209 PMAQI
27th Jul 20252010 PMAQI
27th Jul 20252011 PMAQI
28th Jul 20252012 AMAQI
28th Jul 2025211 AMAQI
28th Jul 2025202 AMAQI
28th Jul 2025173 AMAQI
28th Jul 2025164 AMAQI
28th Jul 2025185 AMAQI
18°C14/26°C
28th Jul 2025196 AMAQI
28th Jul 2025227 AMAQI
28th Jul 2025228 AMAQI
28th Jul 2025229 AMAQI
28th Jul 20252410 AMAQI
28th Jul 20252411 AMAQI
28th Jul 20252412 PMAQI
28th Jul 2025221 PMAQI
28th Jul 2025202 PMAQI
28th Jul 2025203 PMAQI
28th Jul 2025214 PMAQI
28th Jul 2025225 PMAQI
28th Jul 2025246 PMAQI
28th Jul 2025237 PMAQI
28th Jul 2025238 PMAQI
28th Jul 2025279 PMAQI
28th Jul 20252810 PMAQI
28th Jul 20252911 PMAQI
29th Jul 20252912 AMAQI
29th Jul 2025271 AMAQI
29th Jul 2025282 AMAQI
29th Jul 2025293 AMAQI
29th Jul 2025314 AMAQI
29th Jul 2025285 AMAQI
20°C13/30°C
29th Jul 2025286 AMAQI
29th Jul 2025367 AMAQI
29th Jul 2025338 AMAQI
29th Jul 2025269 AMAQI
29th Jul 20252510 AMAQI
29th Jul 20252711 AMAQI
29th Jul 20253412 PMAQI
29th Jul 2025351 PMAQI
29th Jul 2025342 PMAQI
29th Jul 2025343 PMAQI
29th Jul 2025334 PMAQI
29th Jul 2025335 PMAQI
29th Jul 2025356 PMAQI
29th Jul 2025347 PMAQI
29th Jul 2025328 PMAQI
29th Jul 2025289 PMAQI
29th Jul 20252810 PMAQI
29th Jul 20252811 PMAQI
30th Jul 20253412 AMAQI
30th Jul 2025351 AMAQI
30th Jul 2025322 AMAQI
30th Jul 2025283 AMAQI
30th Jul 2025264 AMAQI
30th Jul 2025235 AMAQI
18°C13/28°C
30th Jul 2025246 AMAQI
30th Jul 2025287 AMAQI
30th Jul 2025268 AMAQI
30th Jul 2025239 AMAQI
30th Jul 20252310 AMAQI
30th Jul 20252611 AMAQI
30th Jul 20252612 PMAQI
30th Jul 2025281 PMAQI
30th Jul 2025242 PMAQI
30th Jul 2025243 PMAQI
30th Jul 2025244 PMAQI
30th Jul 2025245 PMAQI
30th Jul 2025246 PMAQI
30th Jul 2025247 PMAQI
30th Jul 2025248 PMAQI
30th Jul 2025269 PMAQI
30th Jul 20252710 PMAQI
30th Jul 20252811 PMAQI
31st Jul 20252812 AMAQI
31st Jul 2025301 AMAQI
31st Jul 2025312 AMAQI
31st Jul 2025273 AMAQI
31st Jul 2025204 AMAQI
31st Jul 2025205 AMAQI
17°C13/22°C
31st Jul 2025246 AMAQI
31st Jul 2025257 AMAQI
31st Jul 2025238 AMAQI
31st Jul 2025209 AMAQI
31st Jul 20251810 AMAQI
31st Jul 20251911 AMAQI
31st Jul 20252212 PMAQI
31st Jul 2025221 PMAQI
31st Jul 2025232 PMAQI
31st Jul 2025263 PMAQI
31st Jul 2025244 PMAQI
31st Jul 2025285 PMAQI
31st Jul 2025296 PMAQI
31st Jul 2025237 PMAQI
31st Jul 2025308 PMAQI
31st Jul 2025329 PMAQI
31st Jul 20253410 PMAQI
31st Jul 20253411 PMAQI
1st Aug 20253412 AMAQI
1st Aug 2025311 AMAQI
1st Aug 2025282 AMAQI
1st Aug 2025303 AMAQI
1st Aug 2025324 AMAQI
1st Aug 2025295 AMAQI
20°C15/30°C
1st Aug 2025266 AMAQI
1st Aug 2025177 AMAQI
1st Aug 2025188 AMAQI
1st Aug 2025169 AMAQI
1st Aug 20252310 AMAQI
1st Aug 20252011 AMAQI
1st Aug 20252012 PMAQI
1st Aug 2025191 PMAQI
1st Aug 2025202 PMAQI
1st Aug 2025243 PMAQI
1st Aug 2025264 PMAQI
1st Aug 2025265 PMAQI
1st Aug 2025266 PMAQI
1st Aug 2025247 PMAQI
1st Aug 2025238 PMAQI
1st Aug 2025259 PMAQI
1st Aug 20252510 PMAQI
1st Aug 20253111 PMAQI
2nd Aug 20253712 AMAQI
2nd Aug 2025381 AMAQI
2nd Aug 2025352 AMAQI
2nd Aug 2025343 AMAQI
2nd Aug 2025324 AMAQI
2nd Aug 2025255 AMAQI
19°C14/29°C
2nd Aug 2025236 AMAQI
2nd Aug 2025247 AMAQI
2nd Aug 2025238 AMAQI
2nd Aug 2025229 AMAQI
2nd Aug 20251810 AMAQI
2nd Aug 20251811 AMAQI
2nd Aug 20251812 PMAQI
2nd Aug 2025201 PMAQI
2nd Aug 2025192 PMAQI
2nd Aug 2025213 PMAQI
2nd Aug 2025224 PMAQI
2nd Aug 2025205 PMAQI
2nd Aug 2025196 PMAQI
2nd Aug 2025227 PMAQI
2nd Aug 2025248 PMAQI
2nd Aug 2025229 PMAQI
2nd Aug 20252410 PMAQI
2nd Aug 20252111 PMAQI
3rd Aug 20252212 AMAQI
3rd Aug 2025251 AMAQI
3rd Aug 2025262 AMAQI
3rd Aug 2025283 AMAQI
3rd Aug 2025284 AMAQI
3rd Aug 2025265 AMAQI
19°C13/31°C
3rd Aug 2025266 AMAQI
3rd Aug 2025267 AMAQI
3rd Aug 2025398 AMAQI
3rd Aug 2025409 AMAQI
3rd Aug 20254110 AMAQI
3rd Aug 20254411 AMAQI
3rd Aug 20254412 PMAQI
3rd Aug 2025471 PMAQI
3rd Aug 2025502 PMAQI
3rd Aug 2025523 PMAQI
3rd Aug 2025514 PMAQI
3rd Aug 2025495 PMAQI
3rd Aug 2025526 PMAQI
3rd Aug 2025407 PMAQI
3rd Aug 2025468 PMAQI
3rd Aug 2025519 PMAQI
3rd Aug 20255210 PMAQI
3rd Aug 20255211 PMAQI
4th Aug 20254312 AMAQI
4th Aug 2025461 AMAQI
4th Aug 2025402 AMAQI
4th Aug 2025393 AMAQI
4th Aug 2025364 AMAQI
4th Aug 2025345 AMAQI
20°C13/30°C
4th Aug 2025376 AMAQI
4th Aug 2025347 AMAQI
4th Aug 2025368 AMAQI
4th Aug 2025369 AMAQI
4th Aug 20253810 AMAQI
4th Aug 20253811 AMAQI
4th Aug 20254012 PMAQI
4th Aug 2025421 PMAQI
4th Aug 2025422 PMAQI
4th Aug 2025403 PMAQI
4th Aug 2025344 PMAQI
4th Aug 2025365 PMAQI
4th Aug 2025406 PMAQI
4th Aug 2025407 PMAQI
4th Aug 2025358 PMAQI
4th Aug 2025349 PMAQI
4th Aug 20253410 PMAQI
4th Aug 20253411 PMAQI
5th Aug 20253612 AMAQI
5th Aug 2025321 AMAQI
5th Aug 2025322 AMAQI
5th Aug 2025383 AMAQI
5th Aug 2025364 AMAQI
5th Aug 2025315 AMAQI
20°C13/31°C
5th Aug 2025326 AMAQI
5th Aug 2025337 AMAQI
5th Aug 2025378 AMAQI
5th Aug 2025349 AMAQI
5th Aug 20253210 AMAQI
5th Aug 20253311 AMAQI
5th Aug 20253412 PMAQI
5th Aug 2025361 PMAQI
5th Aug 2025312 PMAQI
5th Aug 2025313 PMAQI
5th Aug 2025424 PMAQI
5th Aug 2025445 PMAQI
5th Aug 2025436 PMAQI
5th Aug 2025357 PMAQI
5th Aug 2025388 PMAQI
5th Aug 2025439 PMAQI
5th Aug 20253810 PMAQI
5th Aug 20253311 PMAQI
6th Aug 20253212 AMAQI
6th Aug 2025301 AMAQI
6th Aug 2025312 AMAQI
6th Aug 2025323 AMAQI
6th Aug 2025314 AMAQI
6th Aug 2025345 AMAQI
18°C12/29°C
6th Aug 2025346 AMAQI
6th Aug 2025387 AMAQI
6th Aug 2025398 AMAQI
6th Aug 2025379 AMAQI
6th Aug 20253410 AMAQI
6th Aug 20253711 AMAQI
6th Aug 20254012 PMAQI
6th Aug 2025401 PMAQI
6th Aug 2025382 PMAQI
6th Aug 2025463 PMAQI
6th Aug 2025514 PMAQI
6th Aug 2025495 PMAQI
6th Aug 2025486 PMAQI
6th Aug 2025387 PMAQI
6th Aug 2025398 PMAQI
6th Aug 2025389 PMAQI
6th Aug 20253710 PMAQI
6th Aug 20253811 PMAQI
7th Aug 20253812 AMAQI
7th Aug 2025371 AMAQI
7th Aug 2025352 AMAQI
7th Aug 2025353 AMAQI
7th Aug 2025414 AMAQI
7th Aug 2025405 AMAQI
22°C13/35°C
7th Aug 2025386 AMAQI
7th Aug 2025327 AMAQI
7th Aug 2025318 AMAQI
7th Aug 2025339 AMAQI
7th Aug 20253310 AMAQI
7th Aug 20253311 AMAQI
7th Aug 20253312 PMAQI
7th Aug 2025321 PMAQI
7th Aug 2025312 PMAQI
7th Aug 2025323 PMAQI
7th Aug 2025314 PMAQI
7th Aug 2025325 PMAQI
7th Aug 2025336 PMAQI
7th Aug 2025347 PMAQI
7th Aug 2025348 PMAQI
7th Aug 2025309 PMAQI
7th Aug 20252910 PMAQI
7th Aug 20253011 PMAQI
8th Aug 20253212 AMAQI
8th Aug 2025341 AMAQI
8th Aug 2025372 AMAQI
8th Aug 2025403 AMAQI
8th Aug 2025434 AMAQI
8th Aug 2025385 AMAQI
21°C14/32°C
8th Aug 2025376 AMAQI
8th Aug 2025457 AMAQI
8th Aug 2025438 AMAQI
8th Aug 2025429 AMAQI
8th Aug 20254610 AMAQI
8th Aug 20254511 AMAQI
8th Aug 20254812 PMAQI
8th Aug 2025461 PMAQI
8th Aug 2025472 PMAQI
8th Aug 2025453 PMAQI
8th Aug 2025454 PMAQI
8th Aug 2025425 PMAQI
8th Aug 2025406 PMAQI
8th Aug 2025417 PMAQI
8th Aug 2025418 PMAQI
8th Aug 2025429 PMAQI
8th Aug 20254310 PMAQI
8th Aug 20254611 PMAQI
9th Aug 20254312 AMAQI
9th Aug 2025401 AMAQI
9th Aug 2025382 AMAQI
9th Aug 2025383 AMAQI
9th Aug 2025404 AMAQI
9th Aug 2025465 AMAQI
21°C13/33°C
9th Aug 2025446 AMAQI
9th Aug 2025457 AMAQI
9th Aug 2025348 AMAQI
9th Aug 2025309 AMAQI
9th Aug 20252810 AMAQI
9th Aug 20253111 AMAQI
9th Aug 20252812 PMAQI
9th Aug 2025261 PMAQI
9th Aug 2025272 PMAQI
9th Aug 2025373 PMAQI
9th Aug 2025374 PMAQI
9th Aug 2025375 PMAQI
9th Aug 2025386 PMAQI
9th Aug 2025377 PMAQI
9th Aug 2025388 PMAQI
9th Aug 2025379 PMAQI
9th Aug 20253510 PMAQI
9th Aug 20253511 PMAQI
10th Aug 20253512 AMAQI
10th Aug 2025361 AMAQI
10th Aug 2025352 AMAQI
10th Aug 2025343 AMAQI
10th Aug 2025344 AMAQI
10th Aug 2025355 AMAQI
22°C14/32°C
10th Aug 2025336 AMAQI
10th Aug 2025407 AMAQI
10th Aug 2025258 AMAQI
10th Aug 2025239 AMAQI
10th Aug 20252310 AMAQI
10th Aug 20252311 AMAQI
10th Aug 20252512 PMAQI
10th Aug 2025261 PMAQI
10th Aug 2025272 PMAQI
10th Aug 2025293 PMAQI
10th Aug 2025284 PMAQI
10th Aug 2025275 PMAQI
10th Aug 2025276 PMAQI
10th Aug 2025287 PMAQI
10th Aug 2025278 PMAQI
10th Aug 2025279 PMAQI
10th Aug 20252710 PMAQI
10th Aug 20252811 PMAQI
11th Aug 20252812 AMAQI
11th Aug 2025261 AMAQI
11th Aug 2025252 AMAQI
11th Aug 2025233 AMAQI
11th Aug 2025274 AMAQI
11th Aug 2025235 AMAQI
21°C14/32°C
11th Aug 2025226 AMAQI
11th Aug 2025197 AMAQI
11th Aug 2025228 AMAQI
11th Aug 2025229 AMAQI
11th Aug 20252410 AMAQI
11th Aug 20252411 AMAQI
11th Aug 20252412 PMAQI
11th Aug 2025251 PMAQI
11th Aug 2025282 PMAQI
11th Aug 2025323 PMAQI
11th Aug 2025324 PMAQI
11th Aug 2025325 PMAQI
11th Aug 2025346 PMAQI
11th Aug 2025257 PMAQI
11th Aug 2025318 PMAQI
11th Aug 2025339 PMAQI
11th Aug 20253310 PMAQI
11th Aug 20252711 PMAQI
12th Aug 20252512 AMAQI
12th Aug 2025231 AMAQI
12th Aug 2025222 AMAQI
12th Aug 2025213 AMAQI
12th Aug 2025254 AMAQI
12th Aug 2025225 AMAQI
18°C12/29°C
12th Aug 2025236 AMAQI
12th Aug 2025267 AMAQI
12th Aug 2025248 AMAQI
12th Aug 2025249 AMAQI
12th Aug 20252310 AMAQI
12th Aug 20252311 AMAQI
12th Aug 20252612 PMAQI
12th Aug 2025261 PMAQI
12th Aug 2025262 PMAQI
12th Aug 2025323 PMAQI
12th Aug 2025404 PMAQI
12th Aug 2025355 PMAQI
12th Aug 2025326 PMAQI
12th Aug 2025287 PMAQI
12th Aug 2025318 PMAQI
12th Aug 2025339 PMAQI
12th Aug 20253110 PMAQI
12th Aug 20252811 PMAQI
13th Aug 20253612 AMAQI
13th Aug 2025361 AMAQI
13th Aug 2025332 AMAQI
13th Aug 2025333 AMAQI
13th Aug 2025304 AMAQI
13th Aug 2025315 AMAQI
19°C14/28°C
13th Aug 2025306 AMAQI
6 AM13th Aug 2025277 AMAQI
13th Aug 2025228 AMAQI
13th Aug 2025279 AMAQI
13th Aug 20252610 AMAQI
13th Aug 20252111 AMAQI
13th Aug 20252212 PMAQI
13th Aug 2025201 PMAQI
1 PM8 PM
1 AM
5 AM
--°C/°C
Day time
Avg. Highest Time
3 PM - 8 PM
27AQI
6 hours / Day
180 hours / Month
Avg. Lowest Time
6 AM - 2 PM
24AQI
9 hours / Day
270 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 3 PM to 8 PM (Avg. 27), while the lowest AQI was between 6 AM to 2 PM (Avg. 24).
Night time
Avg. Highest Time
12 AM - 11 PM
26AQI
9 hours / Day
270 hours / Month
Avg. Lowest Time
12 AM - 5 AM
26AQI
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. 26), while the lowest AQI was between 12 AM to 5 AM (Avg. 26).
2025 Days Vs Air Quality
Vallejo, California, United States
2025
95%
212
5%
12
Total number of days with different AQI categories in last 225 days in 2025 (140 days remaining)
Good
212 DaysModerate
12 DaysPoor
0 DaysUnhealthy
0 DaysSevere
0 DaysHazardous
0 DaysUnder WHO’s Safe Air Quality Limits: 95%
Health Risk Level:
Very Low
In 2025, 95% of 225 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
Vallejo, 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
88AQI
88AQI
2nd January 2025
43AQI
43AQI
3rd January 2025
41AQI
41AQI
4th January 2025
35AQI
35AQI
5th January 2025
40AQI
40AQI
6th January 2025
40AQI
40AQI
7th January 2025
30AQI
30AQI
8th January 2025
27AQI
27AQI
9th January 2025
42AQI
42AQI
10th January 2025
50AQI
50AQI
11th January 2025
33AQI
33AQI
12th January 2025
27AQI
27AQI
13th January 2025
33AQI
33AQI
14th January 2025
37AQI
37AQI
15th January 2025
49AQI
49AQI
16th January 2025
51AQI
51AQI
17th January 2025
46AQI
46AQI
18th January 2025
43AQI
43AQI
19th January 2025
53AQI
53AQI
20th January 2025
33AQI
33AQI
21st January 2025
45AQI
45AQI
22nd January 2025
53AQI
53AQI
23rd January 2025
45AQI
45AQI
24th January 2025
61AQI
61AQI
25th January 2025
45AQI
45AQI
26th January 2025
38AQI
38AQI
27th January 2025
40AQI
40AQI
28th January 2025
42AQI
42AQI
29th January 2025
34AQI
34AQI
30th January 2025
37AQI
37AQI
31st January 2025
37AQI
37AQI
1st February 2025
40AQI
40AQI
2nd February 2025
24AQI
24AQI
3rd February 2025
24AQI
24AQI
4th February 2025
24AQI
24AQI
5th February 2025
28AQI
28AQI
6th February 2025
26AQI
26AQI
7th February 2025
28AQI
28AQI
8th February 2025
27AQI
27AQI
9th February 2025
34AQI
34AQI
10th February 2025
32AQI
32AQI
11th February 2025
34AQI
34AQI
12th February 2025
26AQI
26AQI
13th February 2025
28AQI
28AQI
14th February 2025
30AQI
30AQI
15th February 2025
27AQI
27AQI
16th February 2025
26AQI
26AQI
17th February 2025
22AQI
22AQI
18th February 2025
24AQI
24AQI
19th February 2025
25AQI
25AQI
20th February 2025
28AQI
28AQI
21st February 2025
30AQI
30AQI
22nd February 2025
30AQI
30AQI
23rd February 2025
22AQI
22AQI
24th February 2025
21AQI
21AQI
25th February 2025
22AQI
22AQI
26th February 2025
30AQI
30AQI
27th February 2025
36AQI
36AQI
28th February 2025
43AQI
43AQI
1st March 2025
31AQI
31AQI
2nd March 2025
29AQI
29AQI
3rd March 2025
26AQI
26AQI
4th March 2025
25AQI
25AQI
5th March 2025
27AQI
27AQI
6th March 2025
30AQI
30AQI
7th March 2025
33AQI
33AQI
8th March 2025
34AQI
34AQI
9th March 2025
44AQI
44AQI
10th March 2025
28AQI
28AQI
11th March 2025
32AQI
32AQI
12th March 2025
30AQI
30AQI
13th March 2025
21AQI
21AQI
14th March 2025
19AQI
19AQI
15th March 2025
49AQI
49AQI
16th March 2025
34AQI
34AQI
17th March 2025
16AQI
16AQI
18th March 2025
19AQI
19AQI
19th March 2025
22AQI
22AQI
20th March 2025
16AQI
16AQI
21st March 2025
21AQI
21AQI
22nd March 2025
20AQI
20AQI
23rd March 2025
23AQI
23AQI
24th March 2025
21AQI
21AQI
25th March 2025
27AQI
27AQI
26th March 2025
23AQI
23AQI
27th March 2025
22AQI
22AQI
28th March 2025
25AQI
25AQI
29th March 2025
23AQI
23AQI
30th March 2025
25AQI
25AQI
31st March 2025
31AQI
31AQI
1st April 2025
26AQI
26AQI
2nd April 2025
23AQI
23AQI
3rd April 2025
24AQI
24AQI
4th April 2025
30AQI
30AQI
5th April 2025
32AQI
32AQI
6th April 2025
30AQI
30AQI
7th April 2025
26AQI
26AQI
8th April 2025
27AQI
27AQI
9th April 2025
30AQI
30AQI
10th April 2025
22AQI
22AQI
11th April 2025
21AQI
21AQI
12th April 2025
30AQI
30AQI
13th April 2025
36AQI
36AQI
14th April 2025
38AQI
38AQI
15th April 2025
46AQI
46AQI
16th April 2025
46AQI
46AQI
17th April 2025
39AQI
39AQI
18th April 2025
33AQI
33AQI
19th April 2025
39AQI
39AQI
20th April 2025
34AQI
34AQI
21st April 2025
44AQI
44AQI
22nd April 2025
44AQI
44AQI
23rd April 2025
52AQI
52AQI
24th April 2025
40AQI
40AQI
25th April 2025
24AQI
24AQI
26th April 2025
21AQI
21AQI
27th April 2025
29AQI
29AQI
28th April 2025
37AQI
37AQI
29th April 2025
44AQI
44AQI
30th April 2025
44AQI
44AQI
1st May 2025
47AQI
47AQI
2nd May 2025
35AQI
35AQI
3rd May 2025
26AQI
26AQI
4th May 2025
30AQI
30AQI
5th May 2025
30AQI
30AQI
6th May 2025
45AQI
45AQI
7th May 2025
49AQI
49AQI
8th May 2025
33AQI
33AQI
9th May 2025
38AQI
38AQI
10th May 2025
32AQI
32AQI
11th May 2025
29AQI
29AQI
12th May 2025
24AQI
24AQI
13th May 2025
20AQI
20AQI
14th May 2025
35AQI
35AQI
15th May 2025
44AQI
44AQI
16th May 2025
48AQI
48AQI
17th May 2025
30AQI
30AQI
18th May 2025
28AQI
28AQI
19th May 2025
27AQI
27AQI
20th May 2025
25AQI
25AQI
21st May 2025
42AQI
42AQI
22nd May 2025
36AQI
36AQI
23rd May 2025
30AQI
30AQI
24th May 2025
37AQI
37AQI
25th May 2025
25AQI
25AQI
26th May 2025
19AQI
19AQI
27th May 2025
30AQI
30AQI
28th May 2025
25AQI
25AQI
29th May 2025
20AQI
20AQI
30th May 2025
31AQI
31AQI
31st May 2025
49AQI
49AQI
1st June 2025
53AQI
53AQI
2nd June 2025
53AQI
53AQI
3rd June 2025
51AQI
51AQI
4th June 2025
55AQI
55AQI
5th June 2025
42AQI
42AQI
6th June 2025
20AQI
20AQI
7th June 2025
25AQI
25AQI
8th June 2025
18AQI
18AQI
9th June 2025
22AQI
22AQI
10th June 2025
24AQI
24AQI
11th June 2025
42AQI
42AQI
12th June 2025
50AQI
50AQI
13th June 2025
51AQI
51AQI
14th June 2025
49AQI
49AQI
15th June 2025
51AQI
51AQI
16th June 2025
44AQI
44AQI
17th June 2025
38AQI
38AQI
18th June 2025
34AQI
34AQI
19th June 2025
46AQI
46AQI
20th June 2025
42AQI
42AQI
21st June 2025
37AQI
37AQI
22nd June 2025
34AQI
34AQI
23rd June 2025
40AQI
40AQI
24th June 2025
31AQI
31AQI
25th June 2025
26AQI
26AQI
26th June 2025
31AQI
31AQI
27th June 2025
37AQI
37AQI
28th June 2025
37AQI
37AQI
29th June 2025
31AQI
31AQI
30th June 2025
23AQI
23AQI
1st July 2025
27AQI
27AQI
2nd July 2025
23AQI
23AQI
3rd July 2025
41AQI
41AQI
4th July 2025
37AQI
37AQI
5th July 2025
37AQI
37AQI
6th July 2025
35AQI
35AQI
7th July 2025
25AQI
25AQI
8th July 2025
22AQI
22AQI
9th July 2025
18AQI
18AQI
10th July 2025
26AQI
26AQI
11th July 2025
35AQI
35AQI
12th July 2025
37AQI
37AQI
13th July 2025
30AQI
30AQI
14th July 2025
21AQI
21AQI
15th July 2025
20AQI
20AQI
16th July 2025
22AQI
22AQI
17th July 2025
19AQI
19AQI
18th July 2025
20AQI
20AQI
19th July 2025
20AQI
20AQI
20th July 2025
25AQI
25AQI
21st July 2025
28AQI
28AQI
22nd July 2025
17AQI
17AQI
23rd July 2025
16AQI
16AQI
24th July 2025
15AQI
15AQI
25th July 2025
16AQI
16AQI
26th July 2025
17AQI
17AQI
27th July 2025
18AQI
18AQI
28th July 2025
22AQI
22AQI
29th July 2025
30AQI
30AQI
30th July 2025
27AQI
27AQI
31st July 2025
26AQI
26AQI
1st August 2025
26AQI
26AQI
2nd August 2025
25AQI
25AQI
3rd August 2025
39AQI
39AQI
4th August 2025
38AQI
38AQI
5th August 2025
36AQI
36AQI
6th August 2025
37AQI
37AQI
7th August 2025
34AQI
34AQI
8th August 2025
41AQI
41AQI
9th August 2025
37AQI
37AQI
10th August 2025
30AQI
30AQI
11th August 2025
27AQI
27AQI
12th August 2025
26AQI
26AQI
43AQI
28AQI
27AQI
34AQI
33AQI
38AQI
25AQI
33AQI
No. of days
Jan.Feb.Mar.Apr.MayJun.Jul.Aug.Sep.Oct.Nov.Dec.Total Days
202532AQI
26
5
28
31
29
1
31
24
6
31
12
212
12
Highest AQI recorded in
January43AQI
Lowest AQI recorded in
July25AQI
202430AQI
20
21
23
27
30
29
31
31
30
28
3
25
5
19
12
314
20
Highest AQI recorded in
December46AQI
Lowest AQI recorded in
January19AQI
202322AQI
31
28
30
30
31
30
31
31
27
28
26
29
352
Highest AQI recorded in
April31AQI
Lowest AQI recorded in
July16AQI
202234AQI
16
14
17
4
1
27
4
24
1
30
1
30
20
1
25
4
31
20
17
14
258
42
1
Highest AQI recorded in
January50AQI
Lowest AQI recorded in
July21AQI
202137AQI
18
12
25
3
30
25
5
31
28
2
31
22
9
21
9
30
1
17
13
24
7
302
61
Highest AQI recorded in
January47AQI
Lowest AQI recorded in
June26AQI
202045AQI
12
1
19
1
18
27
3
28
3
19
7
5
12
13
4
1
20
9
2
18
10
16
15
189
62
7
4
1
Highest AQI recorded in
September71AQI
Lowest AQI recorded in
June30AQI
Most & Least Polluted Years Over the Last 6 Years
Most Polluted Year Recorded
2020(Avg.)
45AQILeast Polluted Year Recorded
2023(Avg.)
22AQIVallejo's annual 2025 AQI (32) shows an average percentage change of 2.02% (worsened AQI) compared to previous years: 2020 (45), 2021 (37), 2022 (34), 2023 (22), 2024 (30).
