Vacaville, 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
Vacaville, California, United States
2021
2022
2023
2024
2025
AQI
.
Days
AQI Trends: Highest and Lowest
Highest AQI recorded on
28th Aug 2021
143AQILowest AQI recorded on
14th Aug 2024
10AQISame Day Analysis (10th August ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 4th highest AQI at 32 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
Vacaville, California, United States
AQI
Day
Night
.
6 AM10th Aug 2025
8 PM
5 AM11th Aug 2025
Day time
Avg. Highest Time
6AM10th Aug
37AQI
Avg. Lowest Time
10AM10th Aug
23AQI
Night time
Avg. Highest Time
12AM11th Aug
32AQI
Avg. Lowest Time
3AM11th Aug
27AQI
In the last 24 hours,
Vacaville's AQI reached its highest point of 37 at 6 AM 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
Vacaville, 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 2025426 AMAQI
12th Jul 2025497 AMAQI
12th Jul 2025488 AMAQI
12th Jul 2025399 AMAQI
12th Jul 20253910 AMAQI
12th Jul 20254211 AMAQI
12th Jul 20254212 PMAQI
12th Jul 2025441 PMAQI
12th Jul 2025402 PMAQI
12th Jul 2025453 PMAQI
12th Jul 2025434 PMAQI
12th Jul 2025465 PMAQI
12th Jul 2025466 PMAQI
12th Jul 2025457 PMAQI
12th Jul 2025428 PMAQI
12th Jul 2025389 PMAQI
12th Jul 20254010 PMAQI
12th Jul 20253811 PMAQI
13th Jul 20253612 AMAQI
13th Jul 2025361 AMAQI
13th Jul 2025382 AMAQI
13th Jul 2025393 AMAQI
13th Jul 2025324 AMAQI
13th Jul 2025285 AMAQI
23°C12/36°C
13th Jul 2025286 AMAQI
13th Jul 2025357 AMAQI
13th Jul 2025368 AMAQI
13th Jul 2025309 AMAQI
13th Jul 20252910 AMAQI
13th Jul 20252911 AMAQI
13th Jul 20252612 PMAQI
13th Jul 2025241 PMAQI
13th Jul 2025342 PMAQI
13th Jul 2025303 PMAQI
13th Jul 2025304 PMAQI
13th Jul 2025275 PMAQI
13th Jul 2025276 PMAQI
13th Jul 2025307 PMAQI
13th Jul 2025298 PMAQI
13th Jul 2025269 PMAQI
13th Jul 20252510 PMAQI
13th Jul 20252511 PMAQI
14th Jul 20252412 AMAQI
14th Jul 2025241 AMAQI
14th Jul 2025222 AMAQI
14th Jul 2025213 AMAQI
14th Jul 2025174 AMAQI
14th Jul 2025165 AMAQI
22°C12/37°C
14th Jul 2025166 AMAQI
14th Jul 2025167 AMAQI
14th Jul 2025168 AMAQI
14th Jul 2025159 AMAQI
14th Jul 20251510 AMAQI
14th Jul 20251511 AMAQI
14th Jul 20251512 PMAQI
14th Jul 2025161 PMAQI
14th Jul 2025182 PMAQI
14th Jul 2025173 PMAQI
14th Jul 2025194 PMAQI
14th Jul 2025205 PMAQI
14th Jul 2025226 PMAQI
14th Jul 2025197 PMAQI
14th Jul 2025188 PMAQI
14th Jul 2025209 PMAQI
14th Jul 20251910 PMAQI
14th Jul 20251811 PMAQI
15th Jul 20251812 AMAQI
15th Jul 2025161 AMAQI
15th Jul 2025162 AMAQI
15th Jul 2025183 AMAQI
15th Jul 2025144 AMAQI
15th Jul 2025135 AMAQI
23°C11/39°C
15th Jul 2025146 AMAQI
15th Jul 2025147 AMAQI
15th Jul 2025148 AMAQI
15th Jul 2025149 AMAQI
15th Jul 20251610 AMAQI
15th Jul 20252111 AMAQI
15th Jul 20251712 PMAQI
15th Jul 2025161 PMAQI
15th Jul 2025142 PMAQI
15th Jul 2025173 PMAQI
15th Jul 2025174 PMAQI
15th Jul 2025175 PMAQI
15th Jul 2025186 PMAQI
15th Jul 2025177 PMAQI
15th Jul 2025178 PMAQI
15th Jul 2025209 PMAQI
15th Jul 20252010 PMAQI
15th Jul 20252111 PMAQI
16th Jul 20252012 AMAQI
16th Jul 2025191 AMAQI
16th Jul 2025182 AMAQI
16th Jul 2025183 AMAQI
16th Jul 2025184 AMAQI
16th Jul 2025185 AMAQI
19°C11/30°C
16th Jul 2025186 AMAQI
16th Jul 2025177 AMAQI
16th Jul 2025188 AMAQI
16th Jul 2025169 AMAQI
16th Jul 20251710 AMAQI
16th Jul 20251711 AMAQI
16th Jul 20251512 PMAQI
16th Jul 2025161 PMAQI
16th Jul 2025162 PMAQI
16th Jul 2025173 PMAQI
16th Jul 2025194 PMAQI
16th Jul 2025215 PMAQI
16th Jul 2025216 PMAQI
16th Jul 2025177 PMAQI
16th Jul 2025178 PMAQI
16th Jul 2025179 PMAQI
16th Jul 20251510 PMAQI
16th Jul 20251811 PMAQI
17th Jul 20251912 AMAQI
17th Jul 2025191 AMAQI
17th Jul 2025182 AMAQI
17th Jul 2025173 AMAQI
17th Jul 2025174 AMAQI
17th Jul 2025175 AMAQI
19°C12/29°C
17th Jul 2025166 AMAQI
17th Jul 2025157 AMAQI
17th Jul 2025168 AMAQI
17th Jul 2025169 AMAQI
17th Jul 20251610 AMAQI
17th Jul 20251611 AMAQI
17th Jul 20251812 PMAQI
17th Jul 2025171 PMAQI
17th Jul 2025192 PMAQI
17th Jul 2025193 PMAQI
17th Jul 2025184 PMAQI
17th Jul 2025225 PMAQI
17th Jul 2025216 PMAQI
17th Jul 2025177 PMAQI
17th Jul 2025168 PMAQI
17th Jul 2025179 PMAQI
17th Jul 20251810 PMAQI
17th Jul 20252011 PMAQI
18th Jul 20252012 AMAQI
18th Jul 2025181 AMAQI
18th Jul 2025172 AMAQI
18th Jul 2025183 AMAQI
18th Jul 2025154 AMAQI
18th Jul 2025155 AMAQI
20°C11/33°C
18th Jul 2025156 AMAQI
18th Jul 2025167 AMAQI
18th Jul 2025168 AMAQI
18th Jul 2025149 AMAQI
18th Jul 20251410 AMAQI
18th Jul 20251311 AMAQI
18th Jul 20251512 PMAQI
18th Jul 2025141 PMAQI
18th Jul 2025162 PMAQI
18th Jul 2025183 PMAQI
18th Jul 2025194 PMAQI
18th Jul 2025185 PMAQI
18th Jul 2025166 PMAQI
18th Jul 2025167 PMAQI
18th Jul 2025168 PMAQI
18th Jul 2025169 PMAQI
18th Jul 20251710 PMAQI
18th Jul 20251811 PMAQI
19th Jul 20251912 AMAQI
19th Jul 2025181 AMAQI
19th Jul 2025172 AMAQI
19th Jul 2025183 AMAQI
19th Jul 2025244 AMAQI
19th Jul 2025245 AMAQI
21°C12/35°C
19th Jul 2025186 AMAQI
19th Jul 2025237 AMAQI
19th Jul 2025208 AMAQI
19th Jul 2025189 AMAQI
19th Jul 20251810 AMAQI
19th Jul 20251611 AMAQI
19th Jul 20251812 PMAQI
19th Jul 2025201 PMAQI
19th Jul 2025182 PMAQI
19th Jul 2025183 PMAQI
19th Jul 2025194 PMAQI
19th Jul 2025195 PMAQI
19th Jul 2025196 PMAQI
19th Jul 2025197 PMAQI
19th Jul 2025188 PMAQI
19th Jul 2025199 PMAQI
19th Jul 20251910 PMAQI
19th Jul 20251811 PMAQI
20th Jul 20251812 AMAQI
20th Jul 2025161 AMAQI
20th Jul 2025182 AMAQI
20th Jul 2025163 AMAQI
20th Jul 2025144 AMAQI
20th Jul 2025145 AMAQI
21°C12/35°C
20th Jul 2025146 AMAQI
20th Jul 2025167 AMAQI
20th Jul 2025168 AMAQI
20th Jul 2025149 AMAQI
20th Jul 20251410 AMAQI
20th Jul 20251411 AMAQI
20th Jul 20251312 PMAQI
20th Jul 2025141 PMAQI
20th Jul 2025162 PMAQI
20th Jul 2025163 PMAQI
20th Jul 2025184 PMAQI
20th Jul 2025175 PMAQI
20th Jul 2025176 PMAQI
20th Jul 2025187 PMAQI
20th Jul 2025188 PMAQI
20th Jul 2025209 PMAQI
20th Jul 20252010 PMAQI
20th Jul 20252111 PMAQI
21st Jul 20252112 AMAQI
21st Jul 2025221 AMAQI
21st Jul 2025242 AMAQI
21st Jul 2025243 AMAQI
21st Jul 2025244 AMAQI
21st Jul 2025215 AMAQI
20°C12/33°C
21st Jul 2025236 AMAQI
21st Jul 2025247 AMAQI
21st Jul 2025278 AMAQI
21st Jul 2025249 AMAQI
21st Jul 20252110 AMAQI
21st Jul 20252311 AMAQI
21st Jul 20252212 PMAQI
21st Jul 2025241 PMAQI
21st Jul 2025252 PMAQI
21st Jul 2025233 PMAQI
21st Jul 2025224 PMAQI
21st Jul 2025225 PMAQI
21st Jul 2025256 PMAQI
21st Jul 2025247 PMAQI
21st Jul 2025238 PMAQI
21st Jul 2025189 PMAQI
21st Jul 20251910 PMAQI
21st Jul 20251911 PMAQI
22nd Jul 20251912 AMAQI
22nd Jul 2025171 AMAQI
22nd Jul 2025182 AMAQI
22nd Jul 2025183 AMAQI
22nd Jul 2025134 AMAQI
22nd Jul 2025135 AMAQI
19°C13/29°C
22nd Jul 2025136 AMAQI
22nd Jul 2025137 AMAQI
22nd Jul 2025138 AMAQI
22nd Jul 2025139 AMAQI
22nd Jul 20251310 AMAQI
22nd Jul 20251311 AMAQI
22nd Jul 20251312 PMAQI
22nd Jul 2025131 PMAQI
22nd Jul 2025142 PMAQI
22nd Jul 2025153 PMAQI
22nd Jul 2025154 PMAQI
22nd Jul 2025165 PMAQI
22nd Jul 2025146 PMAQI
22nd Jul 2025147 PMAQI
22nd Jul 2025148 PMAQI
22nd Jul 2025159 PMAQI
22nd Jul 20251510 PMAQI
22nd Jul 20251411 PMAQI
23rd Jul 20251612 AMAQI
23rd Jul 2025141 AMAQI
23rd Jul 2025152 AMAQI
23rd Jul 2025143 AMAQI
23rd Jul 2025134 AMAQI
23rd Jul 2025135 AMAQI
19°C13/29°C
23rd Jul 2025136 AMAQI
23rd Jul 2025127 AMAQI
23rd Jul 2025138 AMAQI
23rd Jul 2025149 AMAQI
23rd Jul 20251410 AMAQI
23rd Jul 20251511 AMAQI
23rd Jul 20251612 PMAQI
23rd Jul 2025161 PMAQI
23rd Jul 2025192 PMAQI
23rd Jul 2025163 PMAQI
23rd Jul 2025164 PMAQI
23rd Jul 2025165 PMAQI
23rd Jul 2025156 PMAQI
23rd Jul 2025167 PMAQI
23rd Jul 2025168 PMAQI
23rd Jul 2025159 PMAQI
23rd Jul 20251610 PMAQI
23rd Jul 20251611 PMAQI
24th Jul 20251612 AMAQI
24th Jul 2025171 AMAQI
24th Jul 2025152 AMAQI
24th Jul 2025153 AMAQI
24th Jul 2025144 AMAQI
24th Jul 2025145 AMAQI
20°C12/30°C
24th Jul 2025126 AMAQI
24th Jul 2025147 AMAQI
24th Jul 2025158 AMAQI
24th Jul 2025159 AMAQI
24th Jul 20251410 AMAQI
24th Jul 20251511 AMAQI
24th Jul 20251512 PMAQI
24th Jul 2025151 PMAQI
24th Jul 2025162 PMAQI
24th Jul 2025153 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 20251810 PMAQI
24th Jul 20251711 PMAQI
25th Jul 20251612 AMAQI
25th Jul 2025161 AMAQI
25th Jul 2025162 AMAQI
25th Jul 2025163 AMAQI
25th Jul 2025144 AMAQI
25th Jul 2025155 AMAQI
19°C11/31°C
25th Jul 2025136 AMAQI
25th Jul 2025147 AMAQI
25th Jul 2025148 AMAQI
25th Jul 2025149 AMAQI
25th Jul 20251410 AMAQI
25th Jul 20251611 AMAQI
25th Jul 20251912 PMAQI
25th Jul 2025161 PMAQI
25th Jul 2025152 PMAQI
25th Jul 2025163 PMAQI
25th Jul 2025174 PMAQI
25th Jul 2025165 PMAQI
25th Jul 2025166 PMAQI
25th Jul 2025157 PMAQI
25th Jul 2025158 PMAQI
25th Jul 2025169 PMAQI
25th Jul 20251610 PMAQI
25th Jul 20251611 PMAQI
26th Jul 20251612 AMAQI
26th Jul 2025161 AMAQI
26th Jul 2025162 AMAQI
26th Jul 2025153 AMAQI
26th Jul 2025134 AMAQI
26th Jul 2025145 AMAQI
20°C12/30°C
26th Jul 2025136 AMAQI
26th Jul 2025127 AMAQI
26th Jul 2025138 AMAQI
26th Jul 2025149 AMAQI
26th Jul 20251410 AMAQI
26th Jul 20251411 AMAQI
26th Jul 20251512 PMAQI
26th Jul 2025141 PMAQI
26th Jul 2025142 PMAQI
26th Jul 2025153 PMAQI
26th Jul 2025154 PMAQI
26th Jul 2025145 PMAQI
26th Jul 2025156 PMAQI
26th Jul 2025167 PMAQI
26th Jul 2025158 PMAQI
26th Jul 2025159 PMAQI
26th Jul 20251410 PMAQI
26th Jul 20251511 PMAQI
27th Jul 20251612 AMAQI
27th Jul 2025151 AMAQI
27th Jul 2025152 AMAQI
27th Jul 2025153 AMAQI
27th Jul 2025144 AMAQI
27th Jul 2025145 AMAQI
19°C13/30°C
27th Jul 2025146 AMAQI
27th Jul 2025167 AMAQI
27th Jul 2025158 AMAQI
27th Jul 2025149 AMAQI
27th Jul 20251510 AMAQI
27th Jul 20251511 AMAQI
27th Jul 20251412 PMAQI
27th Jul 2025151 PMAQI
27th Jul 2025142 PMAQI
27th Jul 2025153 PMAQI
27th Jul 2025154 PMAQI
27th Jul 2025165 PMAQI
27th Jul 2025166 PMAQI
27th Jul 2025167 PMAQI
27th Jul 2025178 PMAQI
27th Jul 2025229 PMAQI
27th Jul 20251910 PMAQI
27th Jul 20251711 PMAQI
28th Jul 20251812 AMAQI
28th Jul 2025161 AMAQI
28th Jul 2025162 AMAQI
28th Jul 2025143 AMAQI
28th Jul 2025154 AMAQI
28th Jul 2025145 AMAQI
20°C13/32°C
28th Jul 2025166 AMAQI
28th Jul 2025177 AMAQI
28th Jul 2025178 AMAQI
28th Jul 2025169 AMAQI
28th Jul 20251810 AMAQI
28th Jul 20252211 AMAQI
28th Jul 20251812 PMAQI
28th Jul 2025181 PMAQI
28th Jul 2025202 PMAQI
28th Jul 2025183 PMAQI
28th Jul 2025204 PMAQI
28th Jul 2025205 PMAQI
28th Jul 2025226 PMAQI
28th Jul 2025207 PMAQI
28th Jul 2025198 PMAQI
28th Jul 2025219 PMAQI
28th Jul 20252310 PMAQI
28th Jul 20252211 PMAQI
29th Jul 20251812 AMAQI
29th Jul 2025191 AMAQI
29th Jul 2025232 AMAQI
29th Jul 2025233 AMAQI
29th Jul 2025234 AMAQI
29th Jul 2025275 AMAQI
23°C12/36°C
29th Jul 2025276 AMAQI
29th Jul 2025297 AMAQI
29th Jul 2025318 AMAQI
29th Jul 2025299 AMAQI
29th Jul 20252610 AMAQI
29th Jul 20253011 AMAQI
29th Jul 20252912 PMAQI
29th Jul 2025271 PMAQI
29th Jul 2025262 PMAQI
29th Jul 2025253 PMAQI
29th Jul 2025284 PMAQI
29th Jul 2025285 PMAQI
29th Jul 2025266 PMAQI
29th Jul 2025267 PMAQI
29th Jul 2025258 PMAQI
29th Jul 2025219 PMAQI
29th Jul 20251910 PMAQI
29th Jul 20252011 PMAQI
30th Jul 20252212 AMAQI
30th Jul 2025251 AMAQI
30th Jul 2025282 AMAQI
30th Jul 2025273 AMAQI
30th Jul 2025354 AMAQI
30th Jul 2025335 AMAQI
23°C12/37°C
30th Jul 2025276 AMAQI
30th Jul 2025247 AMAQI
30th Jul 2025218 AMAQI
30th Jul 2025209 AMAQI
30th Jul 20252110 AMAQI
30th Jul 20252411 AMAQI
30th Jul 20252812 PMAQI
30th Jul 2025321 PMAQI
30th Jul 2025292 PMAQI
30th Jul 2025303 PMAQI
30th Jul 2025304 PMAQI
30th Jul 2025305 PMAQI
30th Jul 2025306 PMAQI
30th Jul 2025307 PMAQI
30th Jul 2025308 PMAQI
30th Jul 2025319 PMAQI
30th Jul 20253110 PMAQI
30th Jul 20253211 PMAQI
31st Jul 20252912 AMAQI
31st Jul 2025261 AMAQI
31st Jul 2025232 AMAQI
31st Jul 2025233 AMAQI
31st Jul 2025224 AMAQI
31st Jul 2025345 AMAQI
20°C12/32°C
31st Jul 2025276 AMAQI
31st Jul 2025237 AMAQI
31st Jul 2025228 AMAQI
31st Jul 2025229 AMAQI
31st Jul 20252210 AMAQI
31st Jul 20251911 AMAQI
31st Jul 20252112 PMAQI
31st Jul 2025241 PMAQI
31st Jul 2025262 PMAQI
31st Jul 2025293 PMAQI
31st Jul 2025334 PMAQI
31st Jul 2025325 PMAQI
31st Jul 2025316 PMAQI
31st Jul 2025267 PMAQI
31st Jul 2025288 PMAQI
31st Jul 2025299 PMAQI
31st Jul 20253010 PMAQI
31st Jul 20253211 PMAQI
1st Aug 20252812 AMAQI
1st Aug 2025231 AMAQI
1st Aug 2025222 AMAQI
1st Aug 2025223 AMAQI
1st Aug 2025254 AMAQI
1st Aug 2025285 AMAQI
23°C12/38°C
1st Aug 2025326 AMAQI
1st Aug 2025267 AMAQI
1st Aug 2025208 AMAQI
1st Aug 2025189 AMAQI
1st Aug 20252110 AMAQI
1st Aug 20252111 AMAQI
1st Aug 20252512 PMAQI
1st Aug 2025281 PMAQI
1st Aug 2025292 PMAQI
1st Aug 2025323 PMAQI
1st Aug 2025344 PMAQI
1st Aug 2025355 PMAQI
1st Aug 2025396 PMAQI
1st Aug 2025287 PMAQI
1st Aug 2025278 PMAQI
1st Aug 2025269 PMAQI
1st Aug 20252410 PMAQI
1st Aug 20252611 PMAQI
2nd Aug 20253012 AMAQI
2nd Aug 2025341 AMAQI
2nd Aug 2025352 AMAQI
2nd Aug 2025323 AMAQI
2nd Aug 2025284 AMAQI
2nd Aug 2025275 AMAQI
22°C12/35°C
2nd Aug 2025266 AMAQI
2nd Aug 2025247 AMAQI
2nd Aug 2025218 AMAQI
2nd Aug 2025189 AMAQI
2nd Aug 20251710 AMAQI
2nd Aug 20251811 AMAQI
2nd Aug 20252012 PMAQI
2nd Aug 2025181 PMAQI
2nd Aug 2025172 PMAQI
2nd Aug 2025193 PMAQI
2nd Aug 2025214 PMAQI
2nd Aug 2025225 PMAQI
2nd Aug 2025236 PMAQI
2nd Aug 2025247 PMAQI
2nd Aug 2025218 PMAQI
2nd Aug 2025209 PMAQI
2nd Aug 20251910 PMAQI
2nd Aug 20251911 PMAQI
3rd Aug 20252412 AMAQI
3rd Aug 2025261 AMAQI
3rd Aug 2025272 AMAQI
3rd Aug 2025273 AMAQI
3rd Aug 2025284 AMAQI
3rd Aug 2025305 AMAQI
23°C12/37°C
3rd Aug 2025246 AMAQI
3rd Aug 2025227 AMAQI
3rd Aug 2025258 AMAQI
3rd Aug 2025299 AMAQI
3rd Aug 20253010 AMAQI
3rd Aug 20252711 AMAQI
3rd Aug 20252912 PMAQI
3rd Aug 2025341 PMAQI
3rd Aug 2025392 PMAQI
3rd Aug 2025403 PMAQI
3rd Aug 2025404 PMAQI
3rd Aug 2025395 PMAQI
3rd Aug 2025406 PMAQI
3rd Aug 2025307 PMAQI
3rd Aug 2025348 PMAQI
3rd Aug 2025429 PMAQI
3rd Aug 20253510 PMAQI
3rd Aug 20253911 PMAQI
4th Aug 20254212 AMAQI
4th Aug 2025481 AMAQI
4th Aug 2025432 AMAQI
4th Aug 2025343 AMAQI
4th Aug 2025264 AMAQI
4th Aug 2025245 AMAQI
22°C11/36°C
4th Aug 2025266 AMAQI
4th Aug 2025327 AMAQI
4th Aug 2025338 AMAQI
4th Aug 2025329 AMAQI
4th Aug 20253510 AMAQI
4th Aug 20253811 AMAQI
4th Aug 20254212 PMAQI
4th Aug 2025401 PMAQI
4th Aug 2025372 PMAQI
4th Aug 2025353 PMAQI
4th Aug 2025324 PMAQI
4th Aug 2025315 PMAQI
4th Aug 2025326 PMAQI
4th Aug 2025357 PMAQI
4th Aug 2025308 PMAQI
4th Aug 2025259 PMAQI
4th Aug 20252410 PMAQI
4th Aug 20252411 PMAQI
5th Aug 20253012 AMAQI
5th Aug 2025291 AMAQI
5th Aug 2025242 AMAQI
5th Aug 2025243 AMAQI
5th Aug 2025234 AMAQI
5th Aug 2025245 AMAQI
22°C11/36°C
5th Aug 2025236 AMAQI
5th Aug 2025237 AMAQI
5th Aug 2025238 AMAQI
5th Aug 2025269 AMAQI
5th Aug 20252810 AMAQI
5th Aug 20252211 AMAQI
5th Aug 20252312 PMAQI
5th Aug 2025231 PMAQI
5th Aug 2025262 PMAQI
5th Aug 2025263 PMAQI
5th Aug 2025304 PMAQI
5th Aug 2025365 PMAQI
5th Aug 2025396 PMAQI
5th Aug 2025267 PMAQI
5th Aug 2025318 PMAQI
5th Aug 2025349 PMAQI
5th Aug 20253810 PMAQI
5th Aug 20253811 PMAQI
6th Aug 20253312 AMAQI
6th Aug 2025321 AMAQI
6th Aug 2025292 AMAQI
6th Aug 2025303 AMAQI
6th Aug 2025314 AMAQI
6th Aug 2025335 AMAQI
21°C9/35°C
6th Aug 2025406 AMAQI
6th Aug 2025407 AMAQI
6th Aug 2025398 AMAQI
6th Aug 2025429 AMAQI
6th Aug 20253910 AMAQI
6th Aug 20253811 AMAQI
6th Aug 20254112 PMAQI
6th Aug 2025481 PMAQI
6th Aug 2025492 PMAQI
6th Aug 2025533 PMAQI
6th Aug 2025514 PMAQI
6th Aug 2025485 PMAQI
6th Aug 2025436 PMAQI
6th Aug 2025397 PMAQI
6th Aug 2025348 PMAQI
6th Aug 2025359 PMAQI
6th Aug 20253810 PMAQI
6th Aug 20253411 PMAQI
7th Aug 20253512 AMAQI
7th Aug 2025381 AMAQI
7th Aug 2025342 AMAQI
7th Aug 2025303 AMAQI
7th Aug 2025264 AMAQI
7th Aug 2025295 AMAQI
25°C12/39°C
7th Aug 2025256 AMAQI
7th Aug 2025277 AMAQI
7th Aug 2025228 AMAQI
7th Aug 2025239 AMAQI
7th Aug 20252610 AMAQI
7th Aug 20252911 AMAQI
7th Aug 20253612 PMAQI
7th Aug 2025351 PMAQI
7th Aug 2025392 PMAQI
7th Aug 2025353 PMAQI
7th Aug 2025344 PMAQI
7th Aug 2025335 PMAQI
7th Aug 2025316 PMAQI
7th Aug 2025327 PMAQI
7th Aug 2025318 PMAQI
7th Aug 2025309 PMAQI
7th Aug 20252910 PMAQI
7th Aug 20253111 PMAQI
8th Aug 20253012 AMAQI
8th Aug 2025281 AMAQI
8th Aug 2025282 AMAQI
8th Aug 2025403 AMAQI
8th Aug 2025484 AMAQI
8th Aug 2025395 AMAQI
26°C15/39°C
8th Aug 2025386 AMAQI
8th Aug 2025347 AMAQI
8th Aug 2025358 AMAQI
8th Aug 2025339 AMAQI
8th Aug 20253410 AMAQI
8th Aug 20253511 AMAQI
8th Aug 20253612 PMAQI
8th Aug 2025441 PMAQI
8th Aug 2025512 PMAQI
8th Aug 2025473 PMAQI
8th Aug 2025444 PMAQI
8th Aug 2025445 PMAQI
8th Aug 2025426 PMAQI
8th Aug 2025377 PMAQI
8th Aug 2025378 PMAQI
8th Aug 2025369 PMAQI
8th Aug 20253510 PMAQI
8th Aug 20253511 PMAQI
9th Aug 20253612 AMAQI
9th Aug 2025391 AMAQI
9th Aug 2025402 AMAQI
9th Aug 2025433 AMAQI
9th Aug 2025424 AMAQI
9th Aug 2025425 AMAQI
27°C13/42°C
9th Aug 2025386 AMAQI
9th Aug 2025387 AMAQI
9th Aug 2025388 AMAQI
9th Aug 2025349 AMAQI
9th Aug 20253110 AMAQI
9th Aug 20253011 AMAQI
9th Aug 20253112 PMAQI
9th Aug 2025311 PMAQI
9th Aug 2025292 PMAQI
9th Aug 2025323 PMAQI
9th Aug 2025354 PMAQI
9th Aug 2025405 PMAQI
9th Aug 2025386 PMAQI
9th Aug 2025377 PMAQI
9th Aug 2025398 PMAQI
9th Aug 2025379 PMAQI
9th Aug 20253410 PMAQI
9th Aug 20253311 PMAQI
10th Aug 20253412 AMAQI
10th Aug 2025351 AMAQI
10th Aug 2025372 AMAQI
10th Aug 2025363 AMAQI
10th Aug 2025344 AMAQI
10th Aug 2025365 AMAQI
28°C15/41°C
10th Aug 2025376 AMAQI
10th Aug 2025317 AMAQI
10th Aug 2025308 AMAQI
10th Aug 2025269 AMAQI
10th Aug 20252310 AMAQI
10th Aug 20252411 AMAQI
10th Aug 20252712 PMAQI
10th Aug 2025291 PMAQI
10th Aug 2025282 PMAQI
10th Aug 2025293 PMAQI
10th Aug 2025334 PMAQI
10th Aug 2025355 PMAQI
10th Aug 2025336 PMAQI
10th Aug 2025327 PMAQI
10th Aug 2025308 PMAQI
10th Aug 2025289 PMAQI
10th Aug 20252810 PMAQI
10th Aug 20253111 PMAQI
11th Aug 20253212 AMAQI
11th Aug 2025301 AMAQI
11th Aug 2025292 AMAQI
11th Aug 2025273 AMAQI
26°C13/42°C
6 AM
1 PM
8 PM
1 AM
5 AM
--°C/°C
Day time
Avg. Highest Time
6 AM - 8 PM
24AQI
15 hours / Day
450 hours / Month
Avg. Lowest Time
6 AM - 8 PM
24AQI
15 hours / Day
450 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 6 AM to 8 PM (Avg. 24), while the lowest AQI was between 6 AM to 8 PM (Avg. 24).
Night time
Avg. Highest Time
12 AM - 11 PM
24AQI
9 hours / Day
270 hours / Month
Avg. Lowest Time
12 AM - 11 PM
24AQI
9 hours / Day
270 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 12 AM to 11 PM (Avg. 24), while the lowest AQI was between 12 AM to 11 PM (Avg. 24).
2025 Days Vs Air Quality
Vacaville, California, United States
2025
99%
220
0.9%
2
Total number of days with different AQI categories in last 223 days in 2025 (142 days remaining)
Good
220 DaysModerate
2 DaysPoor
0 DaysUnhealthy
0 DaysSevere
0 DaysHazardous
0 DaysUnder WHO’s Safe Air Quality Limits: 99%
Health Risk Level:
Very Low
In 2025, 99% of 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
Vacaville, 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
54AQI
54AQI
2nd January 2025
38AQI
38AQI
3rd January 2025
40AQI
40AQI
4th January 2025
21AQI
21AQI
5th January 2025
27AQI
27AQI
6th January 2025
32AQI
32AQI
7th January 2025
20AQI
20AQI
8th January 2025
23AQI
23AQI
9th January 2025
29AQI
29AQI
10th January 2025
39AQI
39AQI
11th January 2025
29AQI
29AQI
12th January 2025
22AQI
22AQI
13th January 2025
25AQI
25AQI
14th January 2025
26AQI
26AQI
15th January 2025
42AQI
42AQI
16th January 2025
43AQI
43AQI
17th January 2025
46AQI
46AQI
18th January 2025
46AQI
46AQI
19th January 2025
50AQI
50AQI
20th January 2025
33AQI
33AQI
21st January 2025
33AQI
33AQI
22nd January 2025
41AQI
41AQI
23rd January 2025
46AQI
46AQI
24th January 2025
51AQI
51AQI
25th January 2025
41AQI
41AQI
26th January 2025
29AQI
29AQI
27th January 2025
25AQI
25AQI
28th January 2025
40AQI
40AQI
29th January 2025
42AQI
42AQI
30th January 2025
48AQI
48AQI
31st January 2025
41AQI
41AQI
1st February 2025
46AQI
46AQI
2nd February 2025
21AQI
21AQI
3rd February 2025
20AQI
20AQI
4th February 2025
19AQI
19AQI
5th February 2025
23AQI
23AQI
6th February 2025
23AQI
23AQI
7th February 2025
31AQI
31AQI
8th February 2025
22AQI
22AQI
9th February 2025
24AQI
24AQI
10th February 2025
24AQI
24AQI
11th February 2025
26AQI
26AQI
12th February 2025
28AQI
28AQI
13th February 2025
26AQI
26AQI
14th February 2025
22AQI
22AQI
15th February 2025
22AQI
22AQI
16th February 2025
26AQI
26AQI
17th February 2025
20AQI
20AQI
18th February 2025
22AQI
22AQI
19th February 2025
23AQI
23AQI
20th February 2025
20AQI
20AQI
21st February 2025
20AQI
20AQI
22nd February 2025
27AQI
27AQI
23rd February 2025
22AQI
22AQI
24th February 2025
20AQI
20AQI
25th February 2025
21AQI
21AQI
26th February 2025
25AQI
25AQI
27th February 2025
30AQI
30AQI
28th February 2025
28AQI
28AQI
1st March 2025
29AQI
29AQI
2nd March 2025
26AQI
26AQI
3rd March 2025
24AQI
24AQI
4th March 2025
27AQI
27AQI
5th March 2025
20AQI
20AQI
6th March 2025
19AQI
19AQI
7th March 2025
24AQI
24AQI
8th March 2025
23AQI
23AQI
9th March 2025
28AQI
28AQI
10th March 2025
26AQI
26AQI
11th March 2025
24AQI
24AQI
12th March 2025
21AQI
21AQI
13th March 2025
19AQI
19AQI
14th March 2025
20AQI
20AQI
15th March 2025
38AQI
38AQI
16th March 2025
31AQI
31AQI
17th March 2025
16AQI
16AQI
18th March 2025
20AQI
20AQI
19th March 2025
20AQI
20AQI
20th March 2025
15AQI
15AQI
21st March 2025
19AQI
19AQI
22nd March 2025
17AQI
17AQI
23rd March 2025
20AQI
20AQI
24th March 2025
19AQI
19AQI
25th March 2025
28AQI
28AQI
26th March 2025
25AQI
25AQI
27th March 2025
22AQI
22AQI
28th March 2025
21AQI
21AQI
29th March 2025
18AQI
18AQI
30th March 2025
21AQI
21AQI
31st March 2025
24AQI
24AQI
1st April 2025
17AQI
17AQI
2nd April 2025
17AQI
17AQI
3rd April 2025
17AQI
17AQI
4th April 2025
27AQI
27AQI
5th April 2025
27AQI
27AQI
6th April 2025
23AQI
23AQI
7th April 2025
13AQI
13AQI
8th April 2025
15AQI
15AQI
9th April 2025
17AQI
17AQI
10th April 2025
17AQI
17AQI
11th April 2025
17AQI
17AQI
12th April 2025
25AQI
25AQI
13th April 2025
21AQI
21AQI
14th April 2025
24AQI
24AQI
15th April 2025
27AQI
27AQI
16th April 2025
29AQI
29AQI
17th April 2025
23AQI
23AQI
18th April 2025
23AQI
23AQI
19th April 2025
28AQI
28AQI
20th April 2025
26AQI
26AQI
21st April 2025
26AQI
26AQI
22nd April 2025
39AQI
39AQI
23rd April 2025
47AQI
47AQI
24th April 2025
39AQI
39AQI
25th April 2025
19AQI
19AQI
26th April 2025
18AQI
18AQI
27th April 2025
23AQI
23AQI
28th April 2025
24AQI
24AQI
29th April 2025
30AQI
30AQI
30th April 2025
31AQI
31AQI
1st May 2025
34AQI
34AQI
2nd May 2025
31AQI
31AQI
3rd May 2025
23AQI
23AQI
4th May 2025
27AQI
27AQI
5th May 2025
26AQI
26AQI
6th May 2025
27AQI
27AQI
7th May 2025
38AQI
38AQI
8th May 2025
36AQI
36AQI
9th May 2025
26AQI
26AQI
10th May 2025
23AQI
23AQI
11th May 2025
20AQI
20AQI
12th May 2025
21AQI
21AQI
13th May 2025
17AQI
17AQI
14th May 2025
20AQI
20AQI
15th May 2025
22AQI
22AQI
16th May 2025
30AQI
30AQI
17th May 2025
23AQI
23AQI
18th May 2025
25AQI
25AQI
19th May 2025
19AQI
19AQI
20th May 2025
16AQI
16AQI
21st May 2025
27AQI
27AQI
22nd May 2025
26AQI
26AQI
23rd May 2025
18AQI
18AQI
24th May 2025
31AQI
31AQI
25th May 2025
22AQI
22AQI
26th May 2025
15AQI
15AQI
27th May 2025
23AQI
23AQI
28th May 2025
23AQI
23AQI
29th May 2025
20AQI
20AQI
30th May 2025
24AQI
24AQI
31st May 2025
33AQI
33AQI
1st June 2025
47AQI
47AQI
2nd June 2025
50AQI
50AQI
3rd June 2025
35AQI
35AQI
4th June 2025
44AQI
44AQI
5th June 2025
33AQI
33AQI
6th June 2025
20AQI
20AQI
7th June 2025
24AQI
24AQI
8th June 2025
18AQI
18AQI
9th June 2025
17AQI
17AQI
10th June 2025
19AQI
19AQI
11th June 2025
37AQI
37AQI
12th June 2025
45AQI
45AQI
13th June 2025
40AQI
40AQI
14th June 2025
39AQI
39AQI
15th June 2025
35AQI
35AQI
16th June 2025
33AQI
33AQI
17th June 2025
29AQI
29AQI
18th June 2025
26AQI
26AQI
19th June 2025
32AQI
32AQI
20th June 2025
30AQI
30AQI
21st June 2025
26AQI
26AQI
22nd June 2025
22AQI
22AQI
23rd June 2025
21AQI
21AQI
24th June 2025
21AQI
21AQI
25th June 2025
19AQI
19AQI
26th June 2025
27AQI
27AQI
27th June 2025
32AQI
32AQI
28th June 2025
32AQI
32AQI
29th June 2025
25AQI
25AQI
30th June 2025
21AQI
21AQI
1st July 2025
24AQI
24AQI
2nd July 2025
20AQI
20AQI
3rd July 2025
35AQI
35AQI
4th July 2025
25AQI
25AQI
5th July 2025
27AQI
27AQI
6th July 2025
27AQI
27AQI
7th July 2025
20AQI
20AQI
8th July 2025
18AQI
18AQI
9th July 2025
17AQI
17AQI
10th July 2025
22AQI
22AQI
11th July 2025
39AQI
39AQI
12th July 2025
44AQI
44AQI
13th July 2025
30AQI
30AQI
14th July 2025
19AQI
19AQI
15th July 2025
17AQI
17AQI
16th July 2025
18AQI
18AQI
17th July 2025
18AQI
18AQI
18th July 2025
16AQI
16AQI
19th July 2025
19AQI
19AQI
20th July 2025
17AQI
17AQI
21st July 2025
23AQI
23AQI
22nd July 2025
15AQI
15AQI
23rd July 2025
15AQI
15AQI
24th July 2025
15AQI
15AQI
25th July 2025
15AQI
15AQI
26th July 2025
15AQI
15AQI
27th July 2025
16AQI
16AQI
28th July 2025
18AQI
18AQI
29th July 2025
25AQI
25AQI
30th July 2025
28AQI
28AQI
31st July 2025
27AQI
27AQI
1st August 2025
27AQI
27AQI
2nd August 2025
24AQI
24AQI
3rd August 2025
32AQI
32AQI
4th August 2025
33AQI
33AQI
5th August 2025
28AQI
28AQI
6th August 2025
38AQI
38AQI
7th August 2025
31AQI
31AQI
8th August 2025
38AQI
38AQI
9th August 2025
37AQI
37AQI
10th August 2025
32AQI
32AQI
36AQI
24AQI
23AQI
24AQI
25AQI
30AQI
22AQI
32AQI
No. of days
Jan.Feb.Mar.Apr.MayJun.Jul.Aug.Sep.Oct.Nov.Dec.Total Days
202527AQI
29
2
28
31
30
31
30
31
10
220
2
Highest AQI recorded in
January36AQI
Lowest AQI recorded in
July22AQI
202422AQI
31
29
29
2
30
31
29
29
2
31
30
31
27
3
25
6
352
13
Highest AQI recorded in
December38AQI
Lowest AQI recorded in
May11AQI
202328AQI
30
1
28
31
30
30
1
29
1
31
29
2
26
4
31
28
1
31
354
10
Highest AQI recorded in
February34AQI
Lowest AQI recorded in
October16AQI
202232AQI
17
13
20
2
31
25
31
30
19
1
1
27
2
31
28
2
24
7
284
27
Highest AQI recorded in
January49AQI
Lowest AQI recorded in
July25AQI
202136AQI
20
10
26
2
31
30
31
30
31
16
13
2
21
9
30
1
20
10
22
9
308
54
2
Highest AQI recorded in
August56AQI
Lowest AQI recorded in
June26AQI
202044AQI
12
20
18
30
30
1
16
4
9
2
11
9
6
4
18
10
3
26
4
20
11
201
39
15
9
Highest AQI recorded in
September80AQI
Lowest AQI recorded in
July19AQI
Most & Least Polluted Years Over the Last 6 Years
Most Polluted Year Recorded
2020(Avg.)
44AQILeast Polluted Year Recorded
2024(Avg.)
22AQIVacaville's annual 2025 AQI (27) shows an average percentage change of -13.6% (improved AQI) compared to previous years: 2020 (44), 2021 (36), 2022 (32), 2023 (28), 2024 (22).
