Napa, 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
Napa, California, United States
2024
2025
AQI
.
Days
AQI Trends: Highest and Lowest
Highest AQI recorded on
11th Aug 2024
38AQILowest AQI recorded on
1st Aug 2024
21AQISame Day Analysis (9th August ):
On this day, AQI across the 2 years varied significantly: 2025 ranks 1st highest AQI at 36 of Good air quality on the same day.
Download 2024 Annual Data
World Air Quality Report
Day & Night AQI Trend: 9th Aug - 10th Aug 2025
Napa, California, United States
AQI
Day
Night
.
6 AM9th Aug 2025
8 PM
5 AM10th Aug 2025
Day time
Avg. Highest Time
7AM9th Aug
41AQI
Avg. Lowest Time
1PM9th Aug
27AQI
Night time
Avg. Highest Time
9PM9th Aug
34AQI
Avg. Lowest Time
5AM10th Aug
26AQI
In the last 24 hours,
Napa's AQI reached its highest point of 41 at 7 AM during the Day, while the lowest point, 26, was recorded at 5 AM during the Night between 9th Aug and 10th Aug 2025.
Day & Night AQI Trend : Jul - Aug 2025
Napa, California, United States
JulAug
11th - 12th12th - 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
Day
Night
11th Jul 2025356 AMAQI
11th Jul 2025367 AMAQI
11th Jul 2025358 AMAQI
11th Jul 2025359 AMAQI
11th Jul 20253210 AMAQI
11th Jul 20253011 AMAQI
11th Jul 20253212 PMAQI
11th Jul 2025361 PMAQI
11th Jul 2025372 PMAQI
11th Jul 2025343 PMAQI
11th Jul 2025354 PMAQI
11th Jul 2025385 PMAQI
11th Jul 2025366 PMAQI
11th Jul 2025337 PMAQI
11th Jul 2025348 PMAQI
11th Jul 2025389 PMAQI
11th Jul 20253610 PMAQI
11th Jul 20253811 PMAQI
12th Jul 20253812 AMAQI
12th Jul 2025381 AMAQI
12th Jul 2025322 AMAQI
12th Jul 2025353 AMAQI
12th Jul 2025354 AMAQI
12th Jul 2025405 AMAQI
22°C12/34°C
12th Jul 2025396 AMAQI
12th Jul 2025407 AMAQI
12th Jul 2025338 AMAQI
12th Jul 2025289 AMAQI
12th Jul 20252710 AMAQI
12th Jul 20253211 AMAQI
12th Jul 20253012 PMAQI
12th Jul 2025321 PMAQI
12th Jul 2025312 PMAQI
12th Jul 2025343 PMAQI
12th Jul 2025384 PMAQI
12th Jul 2025365 PMAQI
12th Jul 2025366 PMAQI
12th Jul 2025367 PMAQI
12th Jul 2025348 PMAQI
12th Jul 2025349 PMAQI
12th Jul 20253410 PMAQI
12th Jul 20253611 PMAQI
13th Jul 20253412 AMAQI
13th Jul 2025341 AMAQI
13th Jul 2025322 AMAQI
13th Jul 2025343 AMAQI
13th Jul 2025314 AMAQI
13th Jul 2025325 AMAQI
19°C12/29°C
13th Jul 2025346 AMAQI
13th Jul 2025337 AMAQI
13th Jul 2025278 AMAQI
13th Jul 2025279 AMAQI
13th Jul 20252710 AMAQI
13th Jul 20252611 AMAQI
13th Jul 20252512 PMAQI
13th Jul 2025251 PMAQI
13th Jul 2025272 PMAQI
13th Jul 2025293 PMAQI
13th Jul 2025304 PMAQI
13th Jul 2025285 PMAQI
13th Jul 2025276 PMAQI
13th Jul 2025287 PMAQI
13th Jul 2025278 PMAQI
13th Jul 2025249 PMAQI
13th Jul 20252410 PMAQI
13th Jul 20252411 PMAQI
14th Jul 20252412 AMAQI
14th Jul 2025221 AMAQI
14th Jul 2025252 AMAQI
14th Jul 2025233 AMAQI
14th Jul 2025184 AMAQI
14th Jul 2025185 AMAQI
19°C12/31°C
14th Jul 2025166 AMAQI
14th Jul 2025207 AMAQI
14th Jul 2025198 AMAQI
14th Jul 2025179 AMAQI
14th Jul 20251710 AMAQI
14th Jul 20251811 AMAQI
14th Jul 20252212 PMAQI
14th Jul 2025221 PMAQI
14th Jul 2025202 PMAQI
14th Jul 2025223 PMAQI
14th Jul 2025224 PMAQI
14th Jul 2025225 PMAQI
14th Jul 2025216 PMAQI
14th Jul 2025227 PMAQI
14th Jul 2025218 PMAQI
14th Jul 2025199 PMAQI
14th Jul 20252010 PMAQI
14th Jul 20251911 PMAQI
15th Jul 20251912 AMAQI
15th Jul 2025191 AMAQI
15th Jul 2025182 AMAQI
15th Jul 2025193 AMAQI
15th Jul 2025174 AMAQI
15th Jul 2025155 AMAQI
20°C11/34°C
15th Jul 2025166 AMAQI
15th Jul 2025167 AMAQI
15th Jul 2025148 AMAQI
15th Jul 2025159 AMAQI
15th Jul 20251610 AMAQI
15th Jul 20251611 AMAQI
15th Jul 20251812 PMAQI
15th Jul 2025181 PMAQI
15th Jul 2025162 PMAQI
15th Jul 2025183 PMAQI
15th Jul 2025184 PMAQI
15th Jul 2025215 PMAQI
15th Jul 2025206 PMAQI
15th Jul 2025197 PMAQI
15th Jul 2025208 PMAQI
15th Jul 2025239 PMAQI
15th Jul 20252310 PMAQI
15th Jul 20252211 PMAQI
16th Jul 20252212 AMAQI
16th Jul 2025201 AMAQI
16th Jul 2025212 AMAQI
16th Jul 2025213 AMAQI
16th Jul 2025214 AMAQI
16th Jul 2025205 AMAQI
17°C12/25°C
16th Jul 2025206 AMAQI
16th Jul 2025187 AMAQI
16th Jul 2025188 AMAQI
16th Jul 2025199 AMAQI
16th Jul 20251910 AMAQI
16th Jul 20252011 AMAQI
16th Jul 20251712 PMAQI
16th Jul 2025181 PMAQI
16th Jul 2025182 PMAQI
16th Jul 2025193 PMAQI
16th Jul 2025214 PMAQI
16th Jul 2025235 PMAQI
16th Jul 2025216 PMAQI
16th Jul 2025207 PMAQI
16th Jul 2025218 PMAQI
16th Jul 2025219 PMAQI
16th Jul 20251810 PMAQI
16th Jul 20252011 PMAQI
17th Jul 20251912 AMAQI
17th Jul 2025191 AMAQI
17th Jul 2025182 AMAQI
17th Jul 2025213 AMAQI
17th Jul 2025234 AMAQI
17th Jul 2025235 AMAQI
16°C13/22°C
17th Jul 2025196 AMAQI
17th Jul 2025197 AMAQI
17th Jul 2025188 AMAQI
17th Jul 2025209 AMAQI
17th Jul 20251910 AMAQI
17th Jul 20251911 AMAQI
17th Jul 20252012 PMAQI
17th Jul 2025171 PMAQI
17th Jul 2025182 PMAQI
17th Jul 2025193 PMAQI
17th Jul 2025194 PMAQI
17th Jul 2025185 PMAQI
17th Jul 2025186 PMAQI
17th Jul 2025187 PMAQI
17th Jul 2025198 PMAQI
17th Jul 2025219 PMAQI
17th Jul 20251910 PMAQI
17th Jul 20252111 PMAQI
18th Jul 20252112 AMAQI
18th Jul 2025181 AMAQI
18th Jul 2025182 AMAQI
18th Jul 2025183 AMAQI
18th Jul 2025174 AMAQI
18th Jul 2025185 AMAQI
18°C13/28°C
18th Jul 2025176 AMAQI
18th Jul 2025187 AMAQI
18th Jul 2025238 AMAQI
18th Jul 2025209 AMAQI
18th Jul 20252110 AMAQI
18th Jul 20252211 AMAQI
18th Jul 20251712 PMAQI
18th Jul 2025181 PMAQI
18th Jul 2025212 PMAQI
18th Jul 2025203 PMAQI
18th Jul 2025184 PMAQI
18th Jul 2025185 PMAQI
18th Jul 2025186 PMAQI
18th Jul 2025177 PMAQI
18th Jul 2025198 PMAQI
18th Jul 2025199 PMAQI
18th Jul 20251810 PMAQI
18th Jul 20251911 PMAQI
19th Jul 20252012 AMAQI
19th Jul 2025201 AMAQI
19th Jul 2025182 AMAQI
19th Jul 2025203 AMAQI
19th Jul 2025214 AMAQI
19th Jul 2025245 AMAQI
19°C13/30°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 2025201 PMAQI
19th Jul 2025192 PMAQI
19th Jul 2025203 PMAQI
19th Jul 2025214 PMAQI
19th Jul 2025205 PMAQI
19th Jul 2025196 PMAQI
19th Jul 2025197 PMAQI
19th Jul 2025188 PMAQI
19th Jul 2025209 PMAQI
19th Jul 20252210 PMAQI
19th Jul 20252211 PMAQI
20th Jul 20252212 AMAQI
20th Jul 2025211 AMAQI
20th Jul 2025202 AMAQI
20th Jul 2025213 AMAQI
20th Jul 2025224 AMAQI
20th Jul 2025185 AMAQI
19°C13/29°C
20th Jul 2025186 AMAQI
20th Jul 2025187 AMAQI
20th Jul 2025178 AMAQI
20th Jul 2025169 AMAQI
20th Jul 20251810 AMAQI
20th Jul 20251811 AMAQI
20th Jul 20251712 PMAQI
20th Jul 2025201 PMAQI
20th Jul 2025222 PMAQI
20th Jul 2025203 PMAQI
20th Jul 2025214 PMAQI
20th Jul 2025205 PMAQI
20th Jul 2025216 PMAQI
20th Jul 2025217 PMAQI
20th Jul 2025218 PMAQI
20th Jul 2025249 PMAQI
20th Jul 20252510 PMAQI
20th Jul 20252511 PMAQI
21st Jul 20252412 AMAQI
21st Jul 2025251 AMAQI
21st Jul 2025252 AMAQI
21st Jul 2025263 AMAQI
21st Jul 2025324 AMAQI
21st Jul 2025325 AMAQI
18°C12/28°C
21st Jul 2025326 AMAQI
21st Jul 2025307 AMAQI
21st Jul 2025268 AMAQI
21st Jul 2025249 AMAQI
21st Jul 20252310 AMAQI
21st Jul 20252611 AMAQI
21st Jul 20252212 PMAQI
21st Jul 2025221 PMAQI
21st Jul 2025192 PMAQI
21st Jul 2025233 PMAQI
21st Jul 2025224 PMAQI
21st Jul 2025245 PMAQI
21st Jul 2025226 PMAQI
21st Jul 2025257 PMAQI
21st Jul 2025268 PMAQI
21st Jul 2025229 PMAQI
21st Jul 20252210 PMAQI
21st Jul 20252111 PMAQI
22nd Jul 20252012 AMAQI
22nd Jul 2025201 AMAQI
22nd Jul 2025212 AMAQI
22nd Jul 2025193 AMAQI
22nd Jul 2025134 AMAQI
22nd Jul 2025125 AMAQI
17°C13/24°C
22nd Jul 2025156 AMAQI
22nd Jul 2025167 AMAQI
22nd Jul 2025178 AMAQI
22nd Jul 2025179 AMAQI
22nd Jul 20251510 AMAQI
22nd Jul 20251411 AMAQI
22nd Jul 20251412 PMAQI
22nd Jul 2025141 PMAQI
22nd Jul 2025142 PMAQI
22nd Jul 2025163 PMAQI
22nd Jul 2025154 PMAQI
22nd Jul 2025165 PMAQI
22nd Jul 2025166 PMAQI
22nd Jul 2025167 PMAQI
22nd Jul 2025168 PMAQI
22nd Jul 2025179 PMAQI
22nd Jul 20251710 PMAQI
22nd Jul 20251611 PMAQI
23rd Jul 20251712 AMAQI
23rd Jul 2025171 AMAQI
23rd Jul 2025162 AMAQI
23rd Jul 2025163 AMAQI
23rd Jul 2025184 AMAQI
23rd Jul 2025145 AMAQI
17°C13/24°C
23rd Jul 2025136 AMAQI
23rd Jul 2025147 AMAQI
23rd Jul 2025168 AMAQI
23rd Jul 2025169 AMAQI
23rd Jul 20251410 AMAQI
23rd Jul 20251411 AMAQI
23rd Jul 20251612 PMAQI
23rd Jul 2025161 PMAQI
23rd Jul 2025162 PMAQI
23rd Jul 2025163 PMAQI
23rd Jul 2025174 PMAQI
23rd Jul 2025165 PMAQI
23rd Jul 2025156 PMAQI
23rd Jul 2025167 PMAQI
23rd Jul 2025168 PMAQI
23rd Jul 2025169 PMAQI
23rd Jul 20251610 PMAQI
23rd Jul 20251611 PMAQI
24th Jul 20251712 AMAQI
24th Jul 2025171 AMAQI
24th Jul 2025162 AMAQI
24th Jul 2025163 AMAQI
24th Jul 2025174 AMAQI
24th Jul 2025185 AMAQI
18°C13/27°C
24th Jul 2025176 AMAQI
24th Jul 2025157 AMAQI
24th Jul 2025168 AMAQI
24th Jul 2025159 AMAQI
24th Jul 20251410 AMAQI
24th Jul 20251411 AMAQI
24th Jul 20251612 PMAQI
24th Jul 2025151 PMAQI
24th Jul 2025162 PMAQI
24th Jul 2025163 PMAQI
24th Jul 2025164 PMAQI
24th Jul 2025165 PMAQI
24th Jul 2025166 PMAQI
24th Jul 2025157 PMAQI
24th Jul 2025168 PMAQI
24th Jul 2025169 PMAQI
24th Jul 20251610 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 2025145 AMAQI
18°C12/27°C
25th Jul 2025136 AMAQI
25th Jul 2025147 AMAQI
25th Jul 2025168 AMAQI
25th Jul 2025149 AMAQI
25th Jul 20251510 AMAQI
25th Jul 20251511 AMAQI
25th Jul 20251512 PMAQI
25th Jul 2025161 PMAQI
25th Jul 2025152 PMAQI
25th Jul 2025163 PMAQI
25th Jul 2025164 PMAQI
25th Jul 2025155 PMAQI
25th Jul 2025166 PMAQI
25th Jul 2025147 PMAQI
25th Jul 2025148 PMAQI
25th Jul 2025169 PMAQI
25th Jul 20251710 PMAQI
25th Jul 20251611 PMAQI
26th Jul 20251712 AMAQI
26th Jul 2025161 AMAQI
26th Jul 2025162 AMAQI
26th Jul 2025163 AMAQI
26th Jul 2025184 AMAQI
26th Jul 2025165 AMAQI
18°C13/26°C
26th Jul 2025176 AMAQI
26th Jul 2025157 AMAQI
26th Jul 2025158 AMAQI
26th Jul 2025159 AMAQI
26th Jul 20251710 AMAQI
26th Jul 20251611 AMAQI
26th Jul 20251512 PMAQI
26th Jul 2025141 PMAQI
26th Jul 2025162 PMAQI
26th Jul 2025163 PMAQI
26th Jul 2025164 PMAQI
26th Jul 2025155 PMAQI
26th Jul 2025166 PMAQI
26th Jul 2025167 PMAQI
26th Jul 2025168 PMAQI
26th Jul 2025149 PMAQI
26th Jul 20251510 PMAQI
26th Jul 20251611 PMAQI
27th Jul 20251612 AMAQI
27th Jul 2025171 AMAQI
27th Jul 2025182 AMAQI
27th Jul 2025183 AMAQI
27th Jul 2025174 AMAQI
27th Jul 2025165 AMAQI
17°C14/26°C
27th Jul 2025156 AMAQI
27th Jul 2025177 AMAQI
27th Jul 2025188 AMAQI
27th Jul 2025169 AMAQI
27th Jul 20251610 AMAQI
27th Jul 20251611 AMAQI
27th Jul 20251712 PMAQI
27th Jul 2025171 PMAQI
27th Jul 2025162 PMAQI
27th Jul 2025173 PMAQI
27th Jul 2025184 PMAQI
27th Jul 2025165 PMAQI
27th Jul 2025176 PMAQI
27th Jul 2025167 PMAQI
27th Jul 2025178 PMAQI
27th Jul 2025209 PMAQI
27th Jul 20251910 PMAQI
27th Jul 20251811 PMAQI
28th Jul 20251812 AMAQI
28th Jul 2025171 AMAQI
28th Jul 2025172 AMAQI
28th Jul 2025183 AMAQI
28th Jul 2025184 AMAQI
28th Jul 2025205 AMAQI
18°C14/28°C
28th Jul 2025206 AMAQI
28th Jul 2025217 AMAQI
28th Jul 2025228 AMAQI
28th Jul 2025199 AMAQI
28th Jul 20252010 AMAQI
28th Jul 20252211 AMAQI
28th Jul 20252412 PMAQI
28th Jul 2025221 PMAQI
28th Jul 2025212 PMAQI
28th Jul 2025203 PMAQI
28th Jul 2025194 PMAQI
28th Jul 2025265 PMAQI
28th Jul 2025216 PMAQI
28th Jul 2025227 PMAQI
28th Jul 2025208 PMAQI
28th Jul 2025219 PMAQI
28th Jul 20252110 PMAQI
28th Jul 20252311 PMAQI
29th Jul 20252112 AMAQI
29th Jul 2025221 AMAQI
29th Jul 2025232 AMAQI
29th Jul 2025233 AMAQI
29th Jul 2025264 AMAQI
29th Jul 2025295 AMAQI
20°C13/32°C
29th Jul 2025276 AMAQI
29th Jul 2025327 AMAQI
29th Jul 2025288 AMAQI
29th Jul 2025269 AMAQI
29th Jul 20252710 AMAQI
29th Jul 20252311 AMAQI
29th Jul 20252712 PMAQI
29th Jul 2025321 PMAQI
29th Jul 2025302 PMAQI
29th Jul 2025283 PMAQI
29th Jul 2025294 PMAQI
29th Jul 2025305 PMAQI
29th Jul 2025316 PMAQI
29th Jul 2025287 PMAQI
29th Jul 2025278 PMAQI
29th Jul 2025269 PMAQI
29th Jul 20252810 PMAQI
29th Jul 20252611 PMAQI
30th Jul 20253012 AMAQI
30th Jul 2025301 AMAQI
30th Jul 2025282 AMAQI
30th Jul 2025263 AMAQI
30th Jul 2025274 AMAQI
30th Jul 2025265 AMAQI
19°C13/31°C
30th Jul 2025236 AMAQI
30th Jul 2025217 AMAQI
30th Jul 2025208 AMAQI
30th Jul 2025209 AMAQI
30th Jul 20251910 AMAQI
30th Jul 20252211 AMAQI
30th Jul 20252212 PMAQI
30th Jul 2025231 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 2025249 PMAQI
30th Jul 20252510 PMAQI
30th Jul 20252511 PMAQI
31st Jul 20252612 AMAQI
31st Jul 2025271 AMAQI
31st Jul 2025252 AMAQI
31st Jul 2025233 AMAQI
31st Jul 2025174 AMAQI
31st Jul 2025185 AMAQI
17°C13/26°C
31st Jul 2025196 AMAQI
31st Jul 2025207 AMAQI
31st Jul 2025208 AMAQI
31st Jul 2025199 AMAQI
31st Jul 20251710 AMAQI
31st Jul 20251811 AMAQI
31st Jul 20252112 PMAQI
31st Jul 2025181 PMAQI
31st Jul 2025212 PMAQI
31st Jul 2025243 PMAQI
31st Jul 2025234 PMAQI
31st Jul 2025245 PMAQI
31st Jul 2025246 PMAQI
31st Jul 2025237 PMAQI
31st Jul 2025268 PMAQI
31st Jul 2025299 PMAQI
31st Jul 20253110 PMAQI
31st Jul 20252911 PMAQI
1st Aug 20252612 AMAQI
1st Aug 2025231 AMAQI
1st Aug 2025202 AMAQI
1st Aug 2025223 AMAQI
1st Aug 2025234 AMAQI
1st Aug 2025215 AMAQI
21°C13/32°C
1st Aug 2025206 AMAQI
1st Aug 2025177 AMAQI
1st Aug 2025188 AMAQI
1st Aug 2025179 AMAQI
1st Aug 20251810 AMAQI
1st Aug 20251811 AMAQI
1st Aug 20252012 PMAQI
1st Aug 2025201 PMAQI
1st Aug 2025202 PMAQI
1st Aug 2025223 PMAQI
1st Aug 2025244 PMAQI
1st Aug 2025255 PMAQI
1st Aug 2025276 PMAQI
1st Aug 2025217 PMAQI
1st Aug 2025218 PMAQI
1st Aug 2025249 PMAQI
1st Aug 20252410 PMAQI
1st Aug 20252811 PMAQI
2nd Aug 20253212 AMAQI
2nd Aug 2025361 AMAQI
2nd Aug 2025302 AMAQI
2nd Aug 2025323 AMAQI
2nd Aug 2025294 AMAQI
2nd Aug 2025235 AMAQI
20°C14/31°C
2nd Aug 2025226 AMAQI
2nd Aug 2025227 AMAQI
2nd Aug 2025198 AMAQI
2nd Aug 2025199 AMAQI
2nd Aug 20251610 AMAQI
2nd Aug 20251811 AMAQI
2nd Aug 20251712 PMAQI
2nd Aug 2025151 PMAQI
2nd Aug 2025152 PMAQI
2nd Aug 2025183 PMAQI
2nd Aug 2025224 PMAQI
2nd Aug 2025205 PMAQI
2nd Aug 2025216 PMAQI
2nd Aug 2025227 PMAQI
2nd Aug 2025198 PMAQI
2nd Aug 2025189 PMAQI
2nd Aug 20252110 PMAQI
2nd Aug 20252011 PMAQI
3rd Aug 20252412 AMAQI
3rd Aug 2025261 AMAQI
3rd Aug 2025262 AMAQI
3rd Aug 2025263 AMAQI
3rd Aug 2025244 AMAQI
3rd Aug 2025255 AMAQI
20°C13/32°C
3rd Aug 2025246 AMAQI
3rd Aug 2025207 AMAQI
3rd Aug 2025328 AMAQI
3rd Aug 2025329 AMAQI
3rd Aug 20253310 AMAQI
3rd Aug 20253611 AMAQI
3rd Aug 20254012 PMAQI
3rd Aug 2025431 PMAQI
3rd Aug 2025462 PMAQI
3rd Aug 2025483 PMAQI
3rd Aug 2025484 PMAQI
3rd Aug 2025445 PMAQI
3rd Aug 2025436 PMAQI
3rd Aug 2025327 PMAQI
3rd Aug 2025388 PMAQI
3rd Aug 2025409 PMAQI
3rd Aug 20254210 PMAQI
3rd Aug 20254411 PMAQI
4th Aug 20254112 AMAQI
4th Aug 2025391 AMAQI
4th Aug 2025362 AMAQI
4th Aug 2025363 AMAQI
4th Aug 2025324 AMAQI
4th Aug 2025335 AMAQI
20°C12/32°C
4th Aug 2025346 AMAQI
4th Aug 2025337 AMAQI
4th Aug 2025378 AMAQI
4th Aug 2025369 AMAQI
4th Aug 20253710 AMAQI
4th Aug 20253911 AMAQI
4th Aug 20253812 PMAQI
4th Aug 2025371 PMAQI
4th Aug 2025382 PMAQI
4th Aug 2025363 PMAQI
4th Aug 2025324 PMAQI
4th Aug 2025365 PMAQI
4th Aug 2025346 PMAQI
4th Aug 2025377 PMAQI
4th Aug 2025348 PMAQI
4th Aug 2025309 PMAQI
4th Aug 20252710 PMAQI
4th Aug 20252811 PMAQI
5th Aug 20253012 AMAQI
5th Aug 2025301 AMAQI
5th Aug 2025302 AMAQI
5th Aug 2025303 AMAQI
5th Aug 2025254 AMAQI
5th Aug 2025245 AMAQI
20°C12/32°C
5th Aug 2025246 AMAQI
5th Aug 2025247 AMAQI
5th Aug 2025278 AMAQI
5th Aug 2025269 AMAQI
5th Aug 20252610 AMAQI
5th Aug 20252311 AMAQI
5th Aug 20252712 PMAQI
5th Aug 2025301 PMAQI
5th Aug 2025302 PMAQI
5th Aug 2025293 PMAQI
5th Aug 2025334 PMAQI
5th Aug 2025365 PMAQI
5th Aug 2025416 PMAQI
5th Aug 2025287 PMAQI
5th Aug 2025308 PMAQI
5th Aug 2025329 PMAQI
5th Aug 20253210 PMAQI
5th Aug 20252911 PMAQI
6th Aug 20253012 AMAQI
6th Aug 2025301 AMAQI
6th Aug 2025322 AMAQI
6th Aug 2025323 AMAQI
6th Aug 2025314 AMAQI
6th Aug 2025295 AMAQI
19°C11/31°C
6th Aug 2025306 AMAQI
6th Aug 2025327 AMAQI
6th Aug 2025348 AMAQI
6th Aug 2025359 AMAQI
6th Aug 20253410 AMAQI
6th Aug 20253611 AMAQI
6th Aug 20253812 PMAQI
6th Aug 2025411 PMAQI
6th Aug 2025432 PMAQI
6th Aug 2025503 PMAQI
6th Aug 2025524 PMAQI
6th Aug 2025475 PMAQI
6th Aug 2025456 PMAQI
6th Aug 2025357 PMAQI
6th Aug 2025388 PMAQI
6th Aug 2025399 PMAQI
6th Aug 20253810 PMAQI
6th Aug 20253411 PMAQI
7th Aug 20253612 AMAQI
7th Aug 2025331 AMAQI
7th Aug 2025322 AMAQI
7th Aug 2025323 AMAQI
7th Aug 2025334 AMAQI
7th Aug 2025325 AMAQI
23°C12/36°C
7th Aug 2025316 AMAQI
7th Aug 2025317 AMAQI
7th Aug 2025288 AMAQI
7th Aug 2025279 AMAQI
7th Aug 20252810 AMAQI
7th Aug 20252711 AMAQI
7th Aug 20252812 PMAQI
7th Aug 2025291 PMAQI
7th Aug 2025282 PMAQI
7th Aug 2025283 PMAQI
7th Aug 2025294 PMAQI
7th Aug 2025305 PMAQI
7th Aug 2025306 PMAQI
7th Aug 2025317 PMAQI
7th Aug 2025318 PMAQI
7th Aug 2025309 PMAQI
7th Aug 20252810 PMAQI
7th Aug 20252811 PMAQI
8th Aug 20252912 AMAQI
8th Aug 2025311 AMAQI
8th Aug 2025342 AMAQI
8th Aug 2025353 AMAQI
8th Aug 2025404 AMAQI
8th Aug 2025355 AMAQI
22°C14/35°C
8th Aug 2025376 AMAQI
8th Aug 2025407 AMAQI
8th Aug 2025378 AMAQI
8th Aug 2025379 AMAQI
8th Aug 20253710 AMAQI
8th Aug 20253911 AMAQI
8th Aug 20254012 PMAQI
8th Aug 2025411 PMAQI
8th Aug 2025462 PMAQI
8th Aug 2025423 PMAQI
8th Aug 2025414 PMAQI
8th Aug 2025415 PMAQI
8th Aug 2025386 PMAQI
8th Aug 2025387 PMAQI
8th Aug 2025388 PMAQI
8th Aug 2025369 PMAQI
8th Aug 20253610 PMAQI
8th Aug 20253811 PMAQI
9th Aug 20253912 AMAQI
9th Aug 2025391 AMAQI
9th Aug 2025372 AMAQI
9th Aug 2025383 AMAQI
9th Aug 2025424 AMAQI
9th Aug 2025425 AMAQI
23°C12/37°C
9th Aug 2025396 AMAQI
9th Aug 2025417 AMAQI
9th Aug 2025338 AMAQI
9th Aug 2025309 AMAQI
9th Aug 20252810 AMAQI
9th Aug 20252811 AMAQI
9th Aug 20252812 PMAQI
9th Aug 2025271 PMAQI
9th Aug 2025292 PMAQI
9th Aug 2025343 PMAQI
9th Aug 2025354 PMAQI
9th Aug 2025375 PMAQI
9th Aug 2025376 PMAQI
9th Aug 2025367 PMAQI
9th Aug 2025378 PMAQI
9th Aug 2025349 PMAQI
9th Aug 20253310 PMAQI
9th Aug 20253411 PMAQI
10th Aug 20253212 AMAQI
10th Aug 2025331 AMAQI
10th Aug 2025342 AMAQI
10th Aug 2025323 AMAQI
10th Aug 2025304 AMAQI
10th Aug 2025265 AMAQI
23°C14/35°C
10th Aug 2025276 AMAQI
6 AM10th Aug 2025287 AMAQI
10th Aug 2025238 AMAQI
10th Aug 2025229 AMAQI
10th Aug 20252410 AMAQI
10th Aug 20252611 AMAQI
10th Aug 20252612 PMAQI
10th Aug 2025281 PMAQI
1 PM10th Aug 2025282 PMAQI
10th Aug 2025283 PMAQI
10th Aug 2025284 PMAQI
8 PM
1 AM
5 AM
--°C/°C
Day time
Avg. Highest Time
6 AM - 6 PM
24AQI
13 hours / Day
390 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 6 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
25AQI
9 hours / Day
270 hours / Month
Avg. Lowest Time
12 AM - 11 PM
25AQI
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. 25), while the lowest AQI was between 12 AM to 11 PM (Avg. 25).
2025 Days Vs Air Quality
Napa, California, United States
2025
98%
217
2%
4
Total number of days with different AQI categories in last 222 days in 2025 (143 days remaining)
Good
217 DaysModerate
4 DaysPoor
0 DaysUnhealthy
0 DaysSevere
0 DaysHazardous
0 DaysUnder WHO’s Safe Air Quality Limits: 98%
Health Risk Level:
Very Low
In 2025, 98% of 222 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
Napa, 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
56AQI
56AQI
2nd January 2025
41AQI
41AQI
3rd January 2025
44AQI
44AQI
4th January 2025
28AQI
28AQI
5th January 2025
33AQI
33AQI
6th January 2025
39AQI
39AQI
7th January 2025
23AQI
23AQI
8th January 2025
26AQI
26AQI
9th January 2025
42AQI
42AQI
10th January 2025
50AQI
50AQI
11th January 2025
33AQI
33AQI
12th January 2025
26AQI
26AQI
13th January 2025
32AQI
32AQI
14th January 2025
34AQI
34AQI
15th January 2025
48AQI
48AQI
16th January 2025
51AQI
51AQI
17th January 2025
47AQI
47AQI
18th January 2025
46AQI
46AQI
19th January 2025
57AQI
57AQI
20th January 2025
37AQI
37AQI
21st January 2025
44AQI
44AQI
22nd January 2025
49AQI
49AQI
23rd January 2025
48AQI
48AQI
24th January 2025
55AQI
55AQI
25th January 2025
46AQI
46AQI
26th January 2025
42AQI
42AQI
27th January 2025
41AQI
41AQI
28th January 2025
48AQI
48AQI
29th January 2025
43AQI
43AQI
30th January 2025
42AQI
42AQI
31st January 2025
39AQI
39AQI
1st February 2025
38AQI
38AQI
2nd February 2025
22AQI
22AQI
3rd February 2025
22AQI
22AQI
4th February 2025
23AQI
23AQI
5th February 2025
25AQI
25AQI
6th February 2025
24AQI
24AQI
7th February 2025
25AQI
25AQI
8th February 2025
23AQI
23AQI
9th February 2025
30AQI
30AQI
10th February 2025
29AQI
29AQI
11th February 2025
31AQI
31AQI
12th February 2025
27AQI
27AQI
13th February 2025
27AQI
27AQI
14th February 2025
30AQI
30AQI
15th February 2025
27AQI
27AQI
16th February 2025
27AQI
27AQI
17th February 2025
22AQI
22AQI
18th February 2025
24AQI
24AQI
19th February 2025
24AQI
24AQI
20th February 2025
25AQI
25AQI
21st February 2025
26AQI
26AQI
22nd February 2025
31AQI
31AQI
23rd February 2025
22AQI
22AQI
24th February 2025
20AQI
20AQI
25th February 2025
22AQI
22AQI
26th February 2025
29AQI
29AQI
27th February 2025
35AQI
35AQI
28th February 2025
40AQI
40AQI
1st March 2025
34AQI
34AQI
2nd March 2025
26AQI
26AQI
3rd March 2025
22AQI
22AQI
4th March 2025
22AQI
22AQI
5th March 2025
25AQI
25AQI
6th March 2025
25AQI
25AQI
7th March 2025
31AQI
31AQI
8th March 2025
29AQI
29AQI
9th March 2025
33AQI
33AQI
10th March 2025
26AQI
26AQI
11th March 2025
28AQI
28AQI
12th March 2025
26AQI
26AQI
13th March 2025
20AQI
20AQI
14th March 2025
18AQI
18AQI
15th March 2025
45AQI
45AQI
16th March 2025
31AQI
31AQI
17th March 2025
16AQI
16AQI
18th March 2025
20AQI
20AQI
19th March 2025
20AQI
20AQI
20th March 2025
17AQI
17AQI
21st March 2025
21AQI
21AQI
22nd March 2025
19AQI
19AQI
23rd March 2025
23AQI
23AQI
24th March 2025
20AQI
20AQI
25th March 2025
31AQI
31AQI
26th March 2025
26AQI
26AQI
27th March 2025
21AQI
21AQI
28th March 2025
26AQI
26AQI
29th March 2025
22AQI
22AQI
30th March 2025
26AQI
26AQI
31st March 2025
27AQI
27AQI
1st April 2025
27AQI
27AQI
2nd April 2025
22AQI
22AQI
3rd April 2025
23AQI
23AQI
4th April 2025
27AQI
27AQI
5th April 2025
28AQI
28AQI
6th April 2025
25AQI
25AQI
7th April 2025
17AQI
17AQI
8th April 2025
20AQI
20AQI
9th April 2025
24AQI
24AQI
10th April 2025
23AQI
23AQI
11th April 2025
22AQI
22AQI
12th April 2025
34AQI
34AQI
13th April 2025
31AQI
31AQI
14th April 2025
31AQI
31AQI
15th April 2025
35AQI
35AQI
16th April 2025
37AQI
37AQI
17th April 2025
25AQI
25AQI
18th April 2025
30AQI
30AQI
19th April 2025
35AQI
35AQI
20th April 2025
32AQI
32AQI
21st April 2025
36AQI
36AQI
22nd April 2025
40AQI
40AQI
23rd April 2025
48AQI
48AQI
24th April 2025
40AQI
40AQI
25th April 2025
23AQI
23AQI
26th April 2025
21AQI
21AQI
27th April 2025
24AQI
24AQI
28th April 2025
29AQI
29AQI
29th April 2025
38AQI
38AQI
30th April 2025
37AQI
37AQI
1st May 2025
38AQI
38AQI
2nd May 2025
31AQI
31AQI
3rd May 2025
22AQI
22AQI
4th May 2025
28AQI
28AQI
5th May 2025
27AQI
27AQI
6th May 2025
39AQI
39AQI
7th May 2025
46AQI
46AQI
8th May 2025
34AQI
34AQI
9th May 2025
35AQI
35AQI
10th May 2025
30AQI
30AQI
11th May 2025
25AQI
25AQI
12th May 2025
23AQI
23AQI
13th May 2025
21AQI
21AQI
14th May 2025
30AQI
30AQI
15th May 2025
35AQI
35AQI
16th May 2025
43AQI
43AQI
17th May 2025
27AQI
27AQI
18th May 2025
27AQI
27AQI
19th May 2025
24AQI
24AQI
20th May 2025
21AQI
21AQI
21st May 2025
34AQI
34AQI
22nd May 2025
31AQI
31AQI
23rd May 2025
27AQI
27AQI
24th May 2025
35AQI
35AQI
25th May 2025
25AQI
25AQI
26th May 2025
18AQI
18AQI
27th May 2025
29AQI
29AQI
28th May 2025
26AQI
26AQI
29th May 2025
21AQI
21AQI
30th May 2025
29AQI
29AQI
31st May 2025
46AQI
46AQI
1st June 2025
50AQI
50AQI
2nd June 2025
50AQI
50AQI
3rd June 2025
41AQI
41AQI
4th June 2025
50AQI
50AQI
5th June 2025
37AQI
37AQI
6th June 2025
21AQI
21AQI
7th June 2025
25AQI
25AQI
8th June 2025
19AQI
19AQI
9th June 2025
19AQI
19AQI
10th June 2025
24AQI
24AQI
11th June 2025
43AQI
43AQI
12th June 2025
48AQI
48AQI
13th June 2025
48AQI
48AQI
14th June 2025
46AQI
46AQI
15th June 2025
49AQI
49AQI
16th June 2025
42AQI
42AQI
17th June 2025
34AQI
34AQI
18th June 2025
30AQI
30AQI
19th June 2025
38AQI
38AQI
20th June 2025
40AQI
40AQI
21st June 2025
36AQI
36AQI
22nd June 2025
32AQI
32AQI
23rd June 2025
35AQI
35AQI
24th June 2025
28AQI
28AQI
25th June 2025
23AQI
23AQI
26th June 2025
28AQI
28AQI
27th June 2025
34AQI
34AQI
28th June 2025
34AQI
34AQI
29th June 2025
29AQI
29AQI
30th June 2025
24AQI
24AQI
1st July 2025
24AQI
24AQI
2nd July 2025
22AQI
22AQI
3rd July 2025
36AQI
36AQI
4th July 2025
34AQI
34AQI
5th July 2025
33AQI
33AQI
6th July 2025
34AQI
34AQI
7th July 2025
23AQI
23AQI
8th July 2025
21AQI
21AQI
9th July 2025
18AQI
18AQI
10th July 2025
23AQI
23AQI
11th July 2025
33AQI
33AQI
12th July 2025
35AQI
35AQI
13th July 2025
29AQI
29AQI
14th July 2025
20AQI
20AQI
15th July 2025
18AQI
18AQI
16th July 2025
20AQI
20AQI
17th July 2025
20AQI
20AQI
18th July 2025
19AQI
19AQI
19th July 2025
20AQI
20AQI
20th July 2025
20AQI
20AQI
21st July 2025
25AQI
25AQI
22nd July 2025
16AQI
16AQI
23rd July 2025
16AQI
16AQI
24th July 2025
16AQI
16AQI
25th July 2025
15AQI
15AQI
26th July 2025
16AQI
16AQI
27th July 2025
17AQI
17AQI
28th July 2025
20AQI
20AQI
29th July 2025
27AQI
27AQI
30th July 2025
25AQI
25AQI
31st July 2025
23AQI
23AQI
1st August 2025
22AQI
22AQI
2nd August 2025
23AQI
23AQI
3rd August 2025
34AQI
34AQI
4th August 2025
35AQI
35AQI
5th August 2025
29AQI
29AQI
6th August 2025
36AQI
36AQI
7th August 2025
30AQI
30AQI
8th August 2025
37AQI
37AQI
9th August 2025
36AQI
36AQI
42AQI
27AQI
25AQI
29AQI
30AQI
35AQI
23AQI
31AQI
No. of days
Jan.Feb.Mar.Apr.MayJun.Jul.Aug.Sep.Oct.Nov.Dec.Total Days
202530AQI
27
4
28
31
30
31
30
31
9
217
4
Highest AQI recorded in
January42AQI
Lowest AQI recorded in
July23AQI
202432AQI
16
1
2
12
29
31
31
28
28
3
27
3
18
13
223
19
Highest AQI recorded in
December44AQI
Lowest AQI recorded in
January19AQI
202323AQI
3
31
34
Highest AQI recorded in
December23AQI
Lowest AQI recorded in
November21AQI
202129AQI
26
4
28
31
27
1
10
122
5
Highest AQI recorded in
January36AQI
Lowest AQI recorded in
March21AQI
202048AQI
1
1
1
11
2
23
8
34
10
1
1
1
Highest AQI recorded in
October203AQI
Lowest AQI recorded in
November32AQI
Most & Least Polluted Years Over the Last 5 Years
Most Polluted Year Recorded
2020(Avg.)
48AQILeast Polluted Year Recorded
2023(Avg.)
23AQINapa's annual 2025 AQI (30) shows an average percentage change of -1.2% (improved AQI) compared to previous years: 2020 (48), 2021 (29), 2023 (23), 2024 (32).
