Calistoga, St Helena, 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
Calistoga, St Helena, California, United States
2024
2025
AQI
.
Days
AQI Trends: Highest and Lowest
Highest AQI recorded on
31st Aug 2024
40AQILowest AQI recorded on
14th Aug 2024
22AQISame Day Analysis (10th August ):
On this day, AQI across the 2 years varied significantly: 2025 ranks 2nd highest AQI at 28 of Good air quality, showing improvement over 2024 on the same day.
Download 2024 Annual Data
World Air Quality Report
Day & Night AQI Trend: 10th Aug - 11th Aug 2025
Calistoga, St Helena, California, United States
AQI
Day
Night
.
6 AM10th Aug 2025
8 PM
5 AM11th Aug 2025
Day time
Avg. Highest Time
1PM10th Aug
32AQI
Avg. Lowest Time
8PM10th Aug
28AQI
Night time
Avg. Highest Time
4AM11th Aug
36AQI
Avg. Lowest Time
10PM10th Aug
26AQI
In the last 24 hours,
Calistoga's AQI reached its highest point of 36 at 4 AM during the Night, while the lowest point, 26, was recorded at 10 PM during the Night between 10th Aug and 11th Aug 2025.
Day & Night AQI Trend : Jul - Aug 2025
Calistoga, St Helena, 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 2025367 AMAQI
12th Jul 2025348 AMAQI
12th Jul 2025329 AMAQI
12th Jul 20253710 AMAQI
12th Jul 20253211 AMAQI
12th Jul 20253012 PMAQI
12th Jul 2025301 PMAQI
12th Jul 2025302 PMAQI
12th Jul 2025323 PMAQI
12th Jul 2025334 PMAQI
12th Jul 2025335 PMAQI
12th Jul 2025346 PMAQI
12th Jul 2025337 PMAQI
12th Jul 2025348 PMAQI
12th Jul 2025399 PMAQI
12th Jul 20253910 PMAQI
12th Jul 20253611 PMAQI
13th Jul 20253412 AMAQI
13th Jul 2025381 AMAQI
13th Jul 2025372 AMAQI
13th Jul 2025383 AMAQI
13th Jul 2025274 AMAQI
13th Jul 2025205 AMAQI
23°C15/33°C
13th Jul 2025256 AMAQI
13th Jul 2025287 AMAQI
13th Jul 2025298 AMAQI
13th Jul 2025259 AMAQI
13th Jul 20252310 AMAQI
13th Jul 20251811 AMAQI
13th Jul 20252112 PMAQI
13th Jul 2025251 PMAQI
13th Jul 2025252 PMAQI
13th Jul 2025263 PMAQI
13th Jul 2025294 PMAQI
13th Jul 2025275 PMAQI
13th Jul 2025276 PMAQI
13th Jul 2025257 PMAQI
13th Jul 2025248 PMAQI
13th Jul 2025289 PMAQI
13th Jul 20253010 PMAQI
13th Jul 20252811 PMAQI
14th Jul 20252612 AMAQI
14th Jul 2025261 AMAQI
14th Jul 2025242 AMAQI
14th Jul 2025243 AMAQI
14th Jul 2025214 AMAQI
14th Jul 2025235 AMAQI
21°C13/32°C
14th Jul 2025226 AMAQI
14th Jul 2025237 AMAQI
14th Jul 2025268 AMAQI
14th Jul 2025229 AMAQI
14th Jul 20252010 AMAQI
14th Jul 20251811 AMAQI
14th Jul 20252012 PMAQI
14th Jul 2025241 PMAQI
14th Jul 2025282 PMAQI
14th Jul 2025203 PMAQI
14th Jul 2025204 PMAQI
14th Jul 2025215 PMAQI
14th Jul 2025206 PMAQI
14th Jul 2025237 PMAQI
14th Jul 2025248 PMAQI
14th Jul 2025289 PMAQI
14th Jul 20252910 PMAQI
14th Jul 20252411 PMAQI
15th Jul 20252412 AMAQI
15th Jul 2025271 AMAQI
15th Jul 2025282 AMAQI
15th Jul 2025293 AMAQI
15th Jul 2025274 AMAQI
15th Jul 2025265 AMAQI
22°C14/34°C
15th Jul 2025216 AMAQI
15th Jul 2025217 AMAQI
15th Jul 2025228 AMAQI
15th Jul 2025229 AMAQI
15th Jul 20252010 AMAQI
15th Jul 20252311 AMAQI
15th Jul 20252312 PMAQI
15th Jul 2025231 PMAQI
15th Jul 2025262 PMAQI
15th Jul 2025283 PMAQI
15th Jul 2025274 PMAQI
15th Jul 2025275 PMAQI
15th Jul 2025296 PMAQI
15th Jul 2025237 PMAQI
15th Jul 2025268 PMAQI
15th Jul 2025339 PMAQI
15th Jul 20253310 PMAQI
15th Jul 20253211 PMAQI
16th Jul 20253212 AMAQI
16th Jul 2025321 AMAQI
16th Jul 2025282 AMAQI
16th Jul 2025283 AMAQI
16th Jul 2025224 AMAQI
16th Jul 2025225 AMAQI
18°C11/28°C
16th Jul 2025256 AMAQI
16th Jul 2025287 AMAQI
16th Jul 2025268 AMAQI
16th Jul 2025259 AMAQI
16th Jul 20252810 AMAQI
16th Jul 20252111 AMAQI
16th Jul 20252012 PMAQI
16th Jul 2025261 PMAQI
16th Jul 2025282 PMAQI
16th Jul 2025243 PMAQI
16th Jul 2025264 PMAQI
16th Jul 2025275 PMAQI
16th Jul 2025286 PMAQI
16th Jul 2025277 PMAQI
16th Jul 2025288 PMAQI
16th Jul 2025279 PMAQI
16th Jul 20252810 PMAQI
16th Jul 20252611 PMAQI
17th Jul 20253012 AMAQI
17th Jul 2025281 AMAQI
17th Jul 2025252 AMAQI
17th Jul 2025283 AMAQI
17th Jul 2025254 AMAQI
17th Jul 2025265 AMAQI
17°C11/26°C
17th Jul 2025266 AMAQI
17th Jul 2025267 AMAQI
17th Jul 2025248 AMAQI
17th Jul 2025239 AMAQI
17th Jul 20252310 AMAQI
17th Jul 20252311 AMAQI
17th Jul 20252412 PMAQI
17th Jul 2025201 PMAQI
17th Jul 2025222 PMAQI
17th Jul 2025233 PMAQI
17th Jul 2025234 PMAQI
17th Jul 2025245 PMAQI
17th Jul 2025236 PMAQI
17th Jul 2025237 PMAQI
17th Jul 2025228 PMAQI
17th Jul 2025269 PMAQI
17th Jul 20252410 PMAQI
17th Jul 20252511 PMAQI
18th Jul 20252212 AMAQI
18th Jul 2025211 AMAQI
18th Jul 2025222 AMAQI
18th Jul 2025203 AMAQI
18th Jul 2025174 AMAQI
18th Jul 2025175 AMAQI
19°C11/30°C
18th Jul 2025196 AMAQI
18th Jul 2025187 AMAQI
18th Jul 2025178 AMAQI
18th Jul 2025179 AMAQI
18th Jul 20251710 AMAQI
18th Jul 20251711 AMAQI
18th Jul 20251812 PMAQI
18th Jul 2025221 PMAQI
18th Jul 2025262 PMAQI
18th Jul 2025253 PMAQI
18th Jul 2025224 PMAQI
18th Jul 2025245 PMAQI
18th Jul 2025246 PMAQI
18th Jul 2025197 PMAQI
18th Jul 2025198 PMAQI
18th Jul 2025229 PMAQI
18th Jul 20252010 PMAQI
18th Jul 20252211 PMAQI
19th Jul 20252212 AMAQI
19th Jul 2025201 AMAQI
19th Jul 2025202 AMAQI
19th Jul 2025213 AMAQI
19th Jul 2025194 AMAQI
19th Jul 2025205 AMAQI
20°C11/30°C
19th Jul 2025216 AMAQI
19th Jul 2025227 AMAQI
19th Jul 2025228 AMAQI
19th Jul 2025239 AMAQI
19th Jul 20251910 AMAQI
19th Jul 20251711 AMAQI
19th Jul 20251812 PMAQI
19th Jul 2025161 PMAQI
19th Jul 2025182 PMAQI
19th Jul 2025203 PMAQI
19th Jul 2025224 PMAQI
19th Jul 2025245 PMAQI
19th Jul 2025236 PMAQI
19th Jul 2025227 PMAQI
19th Jul 2025208 PMAQI
19th Jul 2025249 PMAQI
19th Jul 20252210 PMAQI
19th Jul 20252211 PMAQI
20th Jul 20252212 AMAQI
20th Jul 2025211 AMAQI
20th Jul 2025222 AMAQI
20th Jul 2025233 AMAQI
20th Jul 2025224 AMAQI
20th Jul 2025175 AMAQI
20°C12/30°C
20th Jul 2025166 AMAQI
20th Jul 2025187 AMAQI
20th Jul 2025218 AMAQI
20th Jul 2025229 AMAQI
20th Jul 20252210 AMAQI
20th Jul 20252211 AMAQI
20th Jul 20251612 PMAQI
20th Jul 2025161 PMAQI
20th Jul 2025182 PMAQI
20th Jul 2025183 PMAQI
20th Jul 2025224 PMAQI
20th Jul 2025235 PMAQI
20th Jul 2025266 PMAQI
20th Jul 2025217 PMAQI
20th Jul 2025208 PMAQI
20th Jul 2025279 PMAQI
20th Jul 20252710 PMAQI
20th Jul 20252711 PMAQI
21st Jul 20252612 AMAQI
21st Jul 2025251 AMAQI
21st Jul 2025272 AMAQI
21st Jul 2025263 AMAQI
21st Jul 2025264 AMAQI
21st Jul 2025245 AMAQI
20°C13/31°C
21st Jul 2025226 AMAQI
21st Jul 2025227 AMAQI
21st Jul 2025208 AMAQI
21st Jul 2025219 AMAQI
21st Jul 20252110 AMAQI
21st Jul 20252211 AMAQI
21st Jul 20252112 PMAQI
21st Jul 2025191 PMAQI
21st Jul 2025192 PMAQI
21st Jul 2025203 PMAQI
21st Jul 2025224 PMAQI
21st Jul 2025225 PMAQI
21st Jul 2025226 PMAQI
21st Jul 2025227 PMAQI
21st Jul 2025218 PMAQI
21st Jul 2025219 PMAQI
21st Jul 20252210 PMAQI
21st Jul 20252211 PMAQI
22nd Jul 20252012 AMAQI
22nd Jul 2025211 AMAQI
22nd Jul 2025202 AMAQI
22nd Jul 2025183 AMAQI
22nd Jul 2025144 AMAQI
22nd Jul 2025145 AMAQI
18°C11/27°C
22nd Jul 2025136 AMAQI
22nd Jul 2025147 AMAQI
22nd Jul 2025148 AMAQI
22nd Jul 2025149 AMAQI
22nd Jul 20251610 AMAQI
22nd Jul 20251611 AMAQI
22nd Jul 20251812 PMAQI
22nd Jul 2025161 PMAQI
22nd Jul 2025172 PMAQI
22nd Jul 2025183 PMAQI
22nd Jul 2025184 PMAQI
22nd Jul 2025175 PMAQI
22nd Jul 2025176 PMAQI
22nd Jul 2025177 PMAQI
22nd Jul 2025168 PMAQI
22nd Jul 2025179 PMAQI
22nd Jul 20251710 PMAQI
22nd Jul 20251711 PMAQI
23rd Jul 20251612 AMAQI
23rd Jul 2025151 AMAQI
23rd Jul 2025162 AMAQI
23rd Jul 2025153 AMAQI
23rd Jul 2025134 AMAQI
23rd Jul 2025125 AMAQI
16°C10/25°C
23rd Jul 2025126 AMAQI
23rd Jul 2025147 AMAQI
23rd Jul 2025158 AMAQI
23rd Jul 2025149 AMAQI
23rd Jul 20251410 AMAQI
23rd Jul 20251611 AMAQI
23rd Jul 20251612 PMAQI
23rd Jul 2025161 PMAQI
23rd Jul 2025172 PMAQI
23rd Jul 2025183 PMAQI
23rd Jul 2025184 PMAQI
23rd Jul 2025175 PMAQI
23rd Jul 2025176 PMAQI
23rd Jul 2025177 PMAQI
23rd Jul 2025178 PMAQI
23rd Jul 2025169 PMAQI
23rd Jul 20251610 PMAQI
23rd Jul 20251711 PMAQI
24th Jul 20251712 AMAQI
24th Jul 2025181 AMAQI
24th Jul 2025182 AMAQI
24th Jul 2025173 AMAQI
24th Jul 2025154 AMAQI
24th Jul 2025145 AMAQI
17°C11/25°C
24th Jul 2025136 AMAQI
24th Jul 2025147 AMAQI
24th Jul 2025148 AMAQI
24th Jul 2025149 AMAQI
24th Jul 20251410 AMAQI
24th Jul 20251411 AMAQI
24th Jul 20251612 PMAQI
24th Jul 2025171 PMAQI
24th Jul 2025182 PMAQI
24th Jul 2025183 PMAQI
24th Jul 2025184 PMAQI
24th Jul 2025165 PMAQI
24th Jul 2025186 PMAQI
24th Jul 2025167 PMAQI
24th Jul 2025168 PMAQI
24th Jul 2025169 PMAQI
24th Jul 20251810 PMAQI
24th Jul 20251811 PMAQI
25th Jul 20251712 AMAQI
25th Jul 2025181 AMAQI
25th Jul 2025172 AMAQI
25th Jul 2025163 AMAQI
25th Jul 2025144 AMAQI
25th Jul 2025165 AMAQI
17°C10/27°C
25th Jul 2025136 AMAQI
25th Jul 2025147 AMAQI
25th Jul 2025158 AMAQI
25th Jul 2025159 AMAQI
25th Jul 20251510 AMAQI
25th Jul 20251611 AMAQI
25th Jul 20251512 PMAQI
25th Jul 2025161 PMAQI
25th Jul 2025162 PMAQI
25th Jul 2025163 PMAQI
25th Jul 2025184 PMAQI
25th Jul 2025185 PMAQI
25th Jul 2025206 PMAQI
25th Jul 2025167 PMAQI
25th Jul 2025168 PMAQI
25th Jul 2025189 PMAQI
25th Jul 20251710 PMAQI
25th Jul 20251611 PMAQI
26th Jul 20251812 AMAQI
26th Jul 2025171 AMAQI
26th Jul 2025162 AMAQI
26th Jul 2025163 AMAQI
26th Jul 2025154 AMAQI
26th Jul 2025165 AMAQI
17°C11/27°C
26th Jul 2025146 AMAQI
26th Jul 2025147 AMAQI
26th Jul 2025148 AMAQI
26th Jul 2025159 AMAQI
26th Jul 20251510 AMAQI
26th Jul 20251411 AMAQI
26th Jul 20251512 PMAQI
26th Jul 2025151 PMAQI
26th Jul 2025162 PMAQI
26th Jul 2025163 PMAQI
26th Jul 2025164 PMAQI
26th Jul 2025165 PMAQI
26th Jul 2025166 PMAQI
26th Jul 2025167 PMAQI
26th Jul 2025168 PMAQI
26th Jul 2025169 PMAQI
26th Jul 20251610 PMAQI
26th Jul 20251611 PMAQI
27th Jul 20251612 AMAQI
27th Jul 2025171 AMAQI
27th Jul 2025162 AMAQI
27th Jul 2025163 AMAQI
27th Jul 2025164 AMAQI
27th Jul 2025175 AMAQI
19°C13/27°C
27th Jul 2025176 AMAQI
27th Jul 2025177 AMAQI
27th Jul 2025168 AMAQI
27th Jul 2025169 AMAQI
27th Jul 20251610 AMAQI
27th Jul 20251511 AMAQI
27th Jul 20251612 PMAQI
27th Jul 2025161 PMAQI
27th Jul 2025162 PMAQI
27th Jul 2025173 PMAQI
27th Jul 2025174 PMAQI
27th Jul 2025185 PMAQI
27th Jul 2025186 PMAQI
27th Jul 2025157 PMAQI
27th Jul 2025158 PMAQI
27th Jul 2025199 PMAQI
27th Jul 20251810 PMAQI
27th Jul 20251711 PMAQI
28th Jul 20251712 AMAQI
28th Jul 2025171 AMAQI
28th Jul 2025192 AMAQI
28th Jul 2025163 AMAQI
28th Jul 2025174 AMAQI
28th Jul 2025165 AMAQI
20°C14/29°C
28th Jul 2025176 AMAQI
28th Jul 2025187 AMAQI
28th Jul 2025188 AMAQI
28th Jul 2025179 AMAQI
28th Jul 20251610 AMAQI
28th Jul 20251711 AMAQI
28th Jul 20251812 PMAQI
28th Jul 2025181 PMAQI
28th Jul 2025172 PMAQI
28th Jul 2025183 PMAQI
28th Jul 2025264 PMAQI
28th Jul 2025205 PMAQI
28th Jul 2025226 PMAQI
28th Jul 2025207 PMAQI
28th Jul 2025198 PMAQI
28th Jul 2025219 PMAQI
28th Jul 20252010 PMAQI
28th Jul 20252011 PMAQI
29th Jul 20252012 AMAQI
29th Jul 2025201 AMAQI
29th Jul 2025202 AMAQI
29th Jul 2025213 AMAQI
29th Jul 2025204 AMAQI
29th Jul 2025225 AMAQI
22°C12/33°C
29th Jul 2025216 AMAQI
29th Jul 2025247 AMAQI
29th Jul 2025218 AMAQI
29th Jul 2025219 AMAQI
29th Jul 20252410 AMAQI
29th Jul 20252211 AMAQI
29th Jul 20252812 PMAQI
29th Jul 2025301 PMAQI
29th Jul 2025262 PMAQI
29th Jul 2025253 PMAQI
29th Jul 2025284 PMAQI
29th Jul 2025285 PMAQI
29th Jul 2025296 PMAQI
29th Jul 2025247 PMAQI
29th Jul 2025248 PMAQI
29th Jul 2025269 PMAQI
29th Jul 20252510 PMAQI
29th Jul 20252411 PMAQI
30th Jul 20252512 AMAQI
30th Jul 2025251 AMAQI
30th Jul 2025242 AMAQI
30th Jul 2025233 AMAQI
30th Jul 2025244 AMAQI
30th Jul 2025275 AMAQI
23°C15/34°C
30th Jul 2025226 AMAQI
30th Jul 2025207 AMAQI
30th Jul 2025178 AMAQI
30th Jul 2025189 AMAQI
30th Jul 20251810 AMAQI
30th Jul 20251811 AMAQI
30th Jul 20251812 PMAQI
30th Jul 2025211 PMAQI
30th Jul 2025232 PMAQI
30th Jul 2025233 PMAQI
30th Jul 2025234 PMAQI
30th Jul 2025235 PMAQI
30th Jul 2025236 PMAQI
30th Jul 2025237 PMAQI
30th Jul 2025238 PMAQI
30th Jul 2025289 PMAQI
30th Jul 20252810 PMAQI
30th Jul 20252811 PMAQI
31st Jul 20252612 AMAQI
31st Jul 2025271 AMAQI
31st Jul 2025242 AMAQI
31st Jul 2025243 AMAQI
31st Jul 2025244 AMAQI
31st Jul 2025245 AMAQI
21°C13/32°C
31st Jul 2025236 AMAQI
31st Jul 2025227 AMAQI
31st Jul 2025238 AMAQI
31st Jul 2025249 AMAQI
31st Jul 20252510 AMAQI
31st Jul 20252611 AMAQI
31st Jul 20252512 PMAQI
31st Jul 2025281 PMAQI
31st Jul 2025282 PMAQI
31st Jul 2025283 PMAQI
31st Jul 2025274 PMAQI
31st Jul 2025265 PMAQI
31st Jul 2025246 PMAQI
31st Jul 2025257 PMAQI
31st Jul 2025308 PMAQI
31st Jul 2025299 PMAQI
31st Jul 20253010 PMAQI
31st Jul 20253011 PMAQI
1st Aug 20253412 AMAQI
1st Aug 2025371 AMAQI
1st Aug 2025322 AMAQI
1st Aug 2025293 AMAQI
1st Aug 2025314 AMAQI
1st Aug 2025375 AMAQI
23°C14/33°C
1st Aug 2025286 AMAQI
1st Aug 2025267 AMAQI
1st Aug 2025268 AMAQI
1st Aug 2025249 AMAQI
1st Aug 20252610 AMAQI
1st Aug 20252611 AMAQI
1st Aug 20252812 PMAQI
1st Aug 2025291 PMAQI
1st Aug 2025322 PMAQI
1st Aug 2025313 PMAQI
1st Aug 2025304 PMAQI
1st Aug 2025345 PMAQI
1st Aug 2025266 PMAQI
1st Aug 2025267 PMAQI
1st Aug 2025308 PMAQI
1st Aug 2025249 PMAQI
1st Aug 20252410 PMAQI
1st Aug 20252611 PMAQI
2nd Aug 20252912 AMAQI
2nd Aug 2025261 AMAQI
2nd Aug 2025252 AMAQI
2nd Aug 2025273 AMAQI
2nd Aug 2025234 AMAQI
2nd Aug 2025225 AMAQI
24°C16/33°C
2nd Aug 2025206 AMAQI
2nd Aug 2025207 AMAQI
2nd Aug 2025188 AMAQI
2nd Aug 2025209 AMAQI
2nd Aug 20252110 AMAQI
2nd Aug 20252011 AMAQI
2nd Aug 20252212 PMAQI
2nd Aug 2025211 PMAQI
2nd Aug 2025212 PMAQI
2nd Aug 2025223 PMAQI
2nd Aug 2025214 PMAQI
2nd Aug 2025235 PMAQI
2nd Aug 2025226 PMAQI
2nd Aug 2025237 PMAQI
2nd Aug 2025228 PMAQI
2nd Aug 2025229 PMAQI
2nd Aug 20251810 PMAQI
2nd Aug 20252011 PMAQI
3rd Aug 20252412 AMAQI
3rd Aug 2025221 AMAQI
3rd Aug 2025242 AMAQI
3rd Aug 2025253 AMAQI
3rd Aug 2025224 AMAQI
3rd Aug 2025215 AMAQI
24°C15/34°C
3rd Aug 2025226 AMAQI
3rd Aug 2025227 AMAQI
3rd Aug 2025218 AMAQI
3rd Aug 2025209 AMAQI
3rd Aug 20252110 AMAQI
3rd Aug 20252111 AMAQI
3rd Aug 20252412 PMAQI
3rd Aug 2025271 PMAQI
3rd Aug 2025342 PMAQI
3rd Aug 2025373 PMAQI
3rd Aug 2025374 PMAQI
3rd Aug 2025375 PMAQI
3rd Aug 2025366 PMAQI
3rd Aug 2025267 PMAQI
3rd Aug 2025298 PMAQI
3rd Aug 2025349 PMAQI
3rd Aug 20253410 PMAQI
3rd Aug 20253611 PMAQI
4th Aug 20253512 AMAQI
4th Aug 2025301 AMAQI
4th Aug 2025322 AMAQI
4th Aug 2025343 AMAQI
4th Aug 2025304 AMAQI
4th Aug 2025285 AMAQI
23°C14/34°C
4th Aug 2025296 AMAQI
4th Aug 2025287 AMAQI
4th Aug 2025278 AMAQI
4th Aug 2025299 AMAQI
4th Aug 20252810 AMAQI
4th Aug 20253211 AMAQI
4th Aug 20253412 PMAQI
4th Aug 2025321 PMAQI
4th Aug 2025322 PMAQI
4th Aug 2025303 PMAQI
4th Aug 2025344 PMAQI
4th Aug 2025345 PMAQI
4th Aug 2025326 PMAQI
4th Aug 2025327 PMAQI
4th Aug 2025328 PMAQI
4th Aug 2025269 PMAQI
4th Aug 20252710 PMAQI
4th Aug 20253011 PMAQI
5th Aug 20253212 AMAQI
5th Aug 2025321 AMAQI
5th Aug 2025322 AMAQI
5th Aug 2025313 AMAQI
5th Aug 2025314 AMAQI
5th Aug 2025305 AMAQI
22°C13/33°C
5th Aug 2025286 AMAQI
5th Aug 2025287 AMAQI
5th Aug 2025268 AMAQI
5th Aug 2025289 AMAQI
5th Aug 20252610 AMAQI
5th Aug 20253011 AMAQI
5th Aug 20253512 PMAQI
5th Aug 2025371 PMAQI
5th Aug 2025362 PMAQI
5th Aug 2025353 PMAQI
5th Aug 2025334 PMAQI
5th Aug 2025355 PMAQI
5th Aug 2025366 PMAQI
5th Aug 2025307 PMAQI
5th Aug 2025308 PMAQI
5th Aug 2025299 PMAQI
5th Aug 20252810 PMAQI
5th Aug 20252811 PMAQI
6th Aug 20252612 AMAQI
6th Aug 2025291 AMAQI
6th Aug 2025292 AMAQI
6th Aug 2025303 AMAQI
6th Aug 2025304 AMAQI
6th Aug 2025315 AMAQI
21°C12/32°C
6th Aug 2025306 AMAQI
6th Aug 2025327 AMAQI
6th Aug 2025308 AMAQI
6th Aug 2025289 AMAQI
6th Aug 20252910 AMAQI
6th Aug 20252811 AMAQI
6th Aug 20253012 PMAQI
6th Aug 2025351 PMAQI
6th Aug 2025362 PMAQI
6th Aug 2025383 PMAQI
6th Aug 2025394 PMAQI
6th Aug 2025445 PMAQI
6th Aug 2025446 PMAQI
6th Aug 2025307 PMAQI
6th Aug 2025328 PMAQI
6th Aug 2025329 PMAQI
6th Aug 20252910 PMAQI
6th Aug 20252811 PMAQI
7th Aug 20253012 AMAQI
7th Aug 2025281 AMAQI
7th Aug 2025292 AMAQI
7th Aug 2025273 AMAQI
7th Aug 2025244 AMAQI
7th Aug 2025225 AMAQI
25°C15/36°C
7th Aug 2025216 AMAQI
7th Aug 2025207 AMAQI
7th Aug 2025208 AMAQI
7th Aug 2025219 AMAQI
7th Aug 20252810 AMAQI
7th Aug 20252911 AMAQI
7th Aug 20252712 PMAQI
7th Aug 2025271 PMAQI
7th Aug 2025282 PMAQI
7th Aug 2025263 PMAQI
7th Aug 2025254 PMAQI
7th Aug 2025255 PMAQI
7th Aug 2025236 PMAQI
7th Aug 2025247 PMAQI
7th Aug 2025228 PMAQI
7th Aug 2025229 PMAQI
7th Aug 20252210 PMAQI
7th Aug 20252311 PMAQI
8th Aug 20252412 AMAQI
8th Aug 2025271 AMAQI
8th Aug 2025282 AMAQI
8th Aug 2025283 AMAQI
8th Aug 2025244 AMAQI
8th Aug 2025255 AMAQI
26°C17/36°C
8th Aug 2025256 AMAQI
8th Aug 2025267 AMAQI
8th Aug 2025258 AMAQI
8th Aug 2025229 AMAQI
8th Aug 20252510 AMAQI
8th Aug 20252611 AMAQI
8th Aug 20253412 PMAQI
8th Aug 2025341 PMAQI
8th Aug 2025282 PMAQI
8th Aug 2025263 PMAQI
8th Aug 2025274 PMAQI
8th Aug 2025275 PMAQI
8th Aug 2025306 PMAQI
8th Aug 2025267 PMAQI
8th Aug 2025278 PMAQI
8th Aug 2025309 PMAQI
8th Aug 20252810 PMAQI
8th Aug 20252811 PMAQI
9th Aug 20252912 AMAQI
9th Aug 2025341 AMAQI
9th Aug 2025342 AMAQI
9th Aug 2025333 AMAQI
9th Aug 2025324 AMAQI
9th Aug 2025295 AMAQI
27°C16/39°C
9th Aug 2025306 AMAQI
9th Aug 2025337 AMAQI
9th Aug 2025328 AMAQI
9th Aug 2025309 AMAQI
9th Aug 20253210 AMAQI
9th Aug 20253411 AMAQI
9th Aug 20253812 PMAQI
9th Aug 2025371 PMAQI
9th Aug 2025352 PMAQI
9th Aug 2025353 PMAQI
9th Aug 2025324 PMAQI
9th Aug 2025315 PMAQI
9th Aug 2025306 PMAQI
9th Aug 2025347 PMAQI
9th Aug 2025328 PMAQI
9th Aug 2025289 PMAQI
9th Aug 20252610 PMAQI
9th Aug 20252711 PMAQI
10th Aug 20252712 AMAQI
10th Aug 2025281 AMAQI
10th Aug 2025282 AMAQI
10th Aug 2025283 AMAQI
10th Aug 2025284 AMAQI
10th Aug 2025285 AMAQI
27°C18/37°C
10th Aug 2025296 AMAQI
10th Aug 2025317 AMAQI
10th Aug 2025288 AMAQI
10th Aug 2025299 AMAQI
10th Aug 20252810 AMAQI
10th Aug 20252811 AMAQI
10th Aug 20253012 PMAQI
10th Aug 2025321 PMAQI
10th Aug 2025312 PMAQI
10th Aug 2025313 PMAQI
10th Aug 2025314 PMAQI
10th Aug 2025305 PMAQI
10th Aug 2025296 PMAQI
10th Aug 2025297 PMAQI
10th Aug 2025288 PMAQI
10th Aug 2025279 PMAQI
10th Aug 20252610 PMAQI
10th Aug 20252711 PMAQI
11th Aug 20252912 AMAQI
11th Aug 2025321 AMAQI
11th Aug 2025342 AMAQI
11th Aug 2025323 AMAQI
11th Aug 2025364 AMAQI
11th Aug 2025365 AMAQI
25°C15/38°C
11th Aug 2025346 AMAQI
6 AM11th Aug 2025377 AMAQI
11th Aug 2025378 AMAQI
11th Aug 2025369 AMAQI
11th Aug 20253610 AMAQI
1 PM
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 - 3 AM
26AQI
4 hours / Day
120 hours / Month
Avg. Lowest Time
4 AM - 5 AM
23AQI
2 hours / Day
60 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 12 AM to 3 AM (Avg. 26), while the lowest AQI was between 4 AM to 5 AM (Avg. 23).
2025 Days Vs Air Quality
Calistoga, St Helena, California, United States
2025
99%
219
1%
3
Total number of days with different AQI categories in last 223 days in 2025 (142 days remaining)
Good
219 DaysModerate
3 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
Calistoga, St Helena, 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
43AQI
43AQI
2nd January 2025
37AQI
37AQI
3rd January 2025
36AQI
36AQI
4th January 2025
27AQI
27AQI
5th January 2025
30AQI
30AQI
6th January 2025
27AQI
27AQI
7th January 2025
39AQI
39AQI
8th January 2025
27AQI
27AQI
9th January 2025
33AQI
33AQI
10th January 2025
39AQI
39AQI
11th January 2025
29AQI
29AQI
12th January 2025
28AQI
28AQI
13th January 2025
27AQI
27AQI
14th January 2025
29AQI
29AQI
15th January 2025
44AQI
44AQI
16th January 2025
41AQI
41AQI
17th January 2025
38AQI
38AQI
18th January 2025
41AQI
41AQI
19th January 2025
50AQI
50AQI
20th January 2025
43AQI
43AQI
21st January 2025
45AQI
45AQI
22nd January 2025
48AQI
48AQI
23rd January 2025
51AQI
51AQI
24th January 2025
46AQI
46AQI
25th January 2025
46AQI
46AQI
26th January 2025
49AQI
49AQI
27th January 2025
48AQI
48AQI
28th January 2025
51AQI
51AQI
29th January 2025
46AQI
46AQI
30th January 2025
51AQI
51AQI
31st January 2025
45AQI
45AQI
1st February 2025
28AQI
28AQI
2nd February 2025
22AQI
22AQI
3rd February 2025
22AQI
22AQI
4th February 2025
26AQI
26AQI
5th February 2025
30AQI
30AQI
6th February 2025
29AQI
29AQI
7th February 2025
23AQI
23AQI
8th February 2025
24AQI
24AQI
9th February 2025
27AQI
27AQI
10th February 2025
29AQI
29AQI
11th February 2025
31AQI
31AQI
12th February 2025
35AQI
35AQI
13th February 2025
28AQI
28AQI
14th February 2025
25AQI
25AQI
15th February 2025
23AQI
23AQI
16th February 2025
26AQI
26AQI
17th February 2025
23AQI
23AQI
18th February 2025
28AQI
28AQI
19th February 2025
24AQI
24AQI
20th February 2025
22AQI
22AQI
21st February 2025
23AQI
23AQI
22nd February 2025
25AQI
25AQI
23rd February 2025
20AQI
20AQI
24th February 2025
21AQI
21AQI
25th February 2025
23AQI
23AQI
26th February 2025
25AQI
25AQI
27th February 2025
27AQI
27AQI
28th February 2025
31AQI
31AQI
1st March 2025
31AQI
31AQI
2nd March 2025
22AQI
22AQI
3rd March 2025
20AQI
20AQI
4th March 2025
24AQI
24AQI
5th March 2025
23AQI
23AQI
6th March 2025
22AQI
22AQI
7th March 2025
30AQI
30AQI
8th March 2025
30AQI
30AQI
9th March 2025
31AQI
31AQI
10th March 2025
27AQI
27AQI
11th March 2025
30AQI
30AQI
12th March 2025
23AQI
23AQI
13th March 2025
19AQI
19AQI
14th March 2025
18AQI
18AQI
15th March 2025
28AQI
28AQI
16th March 2025
25AQI
25AQI
17th March 2025
18AQI
18AQI
18th March 2025
18AQI
18AQI
19th March 2025
19AQI
19AQI
20th March 2025
16AQI
16AQI
21st March 2025
21AQI
21AQI
22nd March 2025
19AQI
19AQI
23rd March 2025
20AQI
20AQI
24th March 2025
20AQI
20AQI
25th March 2025
25AQI
25AQI
26th March 2025
25AQI
25AQI
27th March 2025
18AQI
18AQI
28th March 2025
21AQI
21AQI
29th March 2025
18AQI
18AQI
30th March 2025
22AQI
22AQI
31st March 2025
19AQI
19AQI
1st April 2025
20AQI
20AQI
2nd April 2025
18AQI
18AQI
3rd April 2025
19AQI
19AQI
4th April 2025
27AQI
27AQI
5th April 2025
23AQI
23AQI
6th April 2025
23AQI
23AQI
7th April 2025
15AQI
15AQI
8th April 2025
17AQI
17AQI
9th April 2025
18AQI
18AQI
10th April 2025
19AQI
19AQI
11th April 2025
19AQI
19AQI
12th April 2025
21AQI
21AQI
13th April 2025
26AQI
26AQI
14th April 2025
26AQI
26AQI
15th April 2025
29AQI
29AQI
16th April 2025
27AQI
27AQI
17th April 2025
23AQI
23AQI
18th April 2025
25AQI
25AQI
19th April 2025
25AQI
25AQI
20th April 2025
22AQI
22AQI
21st April 2025
22AQI
22AQI
22nd April 2025
29AQI
29AQI
23rd April 2025
38AQI
38AQI
24th April 2025
33AQI
33AQI
25th April 2025
21AQI
21AQI
26th April 2025
20AQI
20AQI
27th April 2025
17AQI
17AQI
28th April 2025
21AQI
21AQI
29th April 2025
26AQI
26AQI
30th April 2025
31AQI
31AQI
1st May 2025
33AQI
33AQI
2nd May 2025
26AQI
26AQI
3rd May 2025
19AQI
19AQI
4th May 2025
25AQI
25AQI
5th May 2025
20AQI
20AQI
6th May 2025
28AQI
28AQI
7th May 2025
34AQI
34AQI
8th May 2025
22AQI
22AQI
9th May 2025
25AQI
25AQI
10th May 2025
23AQI
23AQI
11th May 2025
19AQI
19AQI
12th May 2025
17AQI
17AQI
13th May 2025
16AQI
16AQI
14th May 2025
19AQI
19AQI
15th May 2025
22AQI
22AQI
16th May 2025
25AQI
25AQI
17th May 2025
23AQI
23AQI
18th May 2025
21AQI
21AQI
19th May 2025
20AQI
20AQI
20th May 2025
17AQI
17AQI
21st May 2025
26AQI
26AQI
22nd May 2025
22AQI
22AQI
23rd May 2025
19AQI
19AQI
24th May 2025
28AQI
28AQI
25th May 2025
23AQI
23AQI
26th May 2025
17AQI
17AQI
27th May 2025
22AQI
22AQI
28th May 2025
25AQI
25AQI
29th May 2025
20AQI
20AQI
30th May 2025
23AQI
23AQI
31st May 2025
36AQI
36AQI
1st June 2025
37AQI
37AQI
2nd June 2025
45AQI
45AQI
3rd June 2025
34AQI
34AQI
4th June 2025
35AQI
35AQI
5th June 2025
27AQI
27AQI
6th June 2025
21AQI
21AQI
7th June 2025
22AQI
22AQI
8th June 2025
19AQI
19AQI
9th June 2025
20AQI
20AQI
10th June 2025
25AQI
25AQI
11th June 2025
35AQI
35AQI
12th June 2025
38AQI
38AQI
13th June 2025
39AQI
39AQI
14th June 2025
36AQI
36AQI
15th June 2025
36AQI
36AQI
16th June 2025
31AQI
31AQI
17th June 2025
27AQI
27AQI
18th June 2025
26AQI
26AQI
19th June 2025
29AQI
29AQI
20th June 2025
33AQI
33AQI
21st June 2025
27AQI
27AQI
22nd June 2025
24AQI
24AQI
23rd June 2025
26AQI
26AQI
24th June 2025
25AQI
25AQI
25th June 2025
23AQI
23AQI
26th June 2025
25AQI
25AQI
27th June 2025
27AQI
27AQI
28th June 2025
25AQI
25AQI
29th June 2025
25AQI
25AQI
30th June 2025
25AQI
25AQI
1st July 2025
24AQI
24AQI
2nd July 2025
22AQI
22AQI
3rd July 2025
28AQI
28AQI
4th July 2025
27AQI
27AQI
5th July 2025
33AQI
33AQI
6th July 2025
27AQI
27AQI
7th July 2025
22AQI
22AQI
8th July 2025
21AQI
21AQI
9th July 2025
20AQI
20AQI
10th July 2025
21AQI
21AQI
11th July 2025
35AQI
35AQI
12th July 2025
35AQI
35AQI
13th July 2025
28AQI
28AQI
14th July 2025
23AQI
23AQI
15th July 2025
26AQI
26AQI
16th July 2025
26AQI
26AQI
17th July 2025
24AQI
24AQI
18th July 2025
20AQI
20AQI
19th July 2025
21AQI
21AQI
20th July 2025
22AQI
22AQI
21st July 2025
23AQI
23AQI
22nd July 2025
17AQI
17AQI
23rd July 2025
16AQI
16AQI
24th July 2025
16AQI
16AQI
25th July 2025
16AQI
16AQI
26th July 2025
16AQI
16AQI
27th July 2025
17AQI
17AQI
28th July 2025
18AQI
18AQI
29th July 2025
24AQI
24AQI
30th July 2025
23AQI
23AQI
31st July 2025
26AQI
26AQI
1st August 2025
29AQI
29AQI
2nd August 2025
22AQI
22AQI
3rd August 2025
27AQI
27AQI
4th August 2025
31AQI
31AQI
5th August 2025
31AQI
31AQI
6th August 2025
32AQI
32AQI
7th August 2025
25AQI
25AQI
8th August 2025
27AQI
27AQI
9th August 2025
32AQI
32AQI
10th August 2025
28AQI
28AQI
40AQI
26AQI
23AQI
23AQI
23AQI
29AQI
23AQI
28AQI
No. of days
Jan.Feb.Mar.Apr.MayJun.Jul.Aug.Sep.Oct.Nov.Dec.Total Days
202527AQI
28
3
28
31
30
31
30
31
10
219
3
Highest AQI recorded in
January40AQI
Lowest AQI recorded in
March23AQI
202434AQI
16
1
1
12
29
31
31
28
28
3
26
4
24
7
210
31
Highest AQI recorded in
March68AQI
Lowest AQI recorded in
April17AQI
202345AQI
1
2
22
9
23
11
Highest AQI recorded in
November54AQI
Lowest AQI recorded in
December44AQI
202078AQI
8
7
2
4
8
7
2
4
Highest AQI recorded in
September78AQI
Lowest AQI recorded in
September78AQI
Most & Least Polluted Years Over the Last 4 Years
Most Polluted Year Recorded
2020(Avg.)
78AQILeast Polluted Year Recorded
2025(Avg.)
27AQICalistoga's annual 2025 AQI (27) shows an average percentage change of -42.7% (improved AQI) compared to previous years: 2020 (78), 2023 (45), 2024 (34).
