Country Background

Healdsburg, 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

Healdsburg, California, United States

2024
2025
AQI
.
Days

AQI Trends: Highest and Lowest

Highest AQI recorded on
5th Aug 2024
36AQI
Lowest AQI recorded on
24th Aug 2024
18AQI


Same Day Analysis (10th August ):
On this day, AQI across the 2 years varied significantly: 2025 ranks 2nd highest AQI at 27 of Good air quality, showing improvement over 2024 on the same day.

Download 2024 Annual Data

World Air Quality Report

Globe

Day & Night AQI Trend: 11th Aug - 12th Aug 2025

Healdsburg, California, United States

AQI
Day
Night
.

6 AM11th Aug 2025

8 PM

5 AM12th Aug 2025

Day time
Avg. Highest Time
6PM11th Aug

32AQI

Avg. Lowest Time
7AM11th Aug

23AQI

Night time
Avg. Highest Time
9PM11th Aug

35AQI

Avg. Lowest Time
11PM11th Aug

31AQI

In the last 24 hours,

Healdsburg's AQI reached its highest point of 35 at 9 PM during the Night, while the lowest point, undefined, was recorded at 5 AM during the Night between 11th Aug and 12th Aug 2025.

Day & Night AQI Trend : Jul - Aug 2025

Healdsburg, California, United States

JulAug
13th - 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 - 12th12th
Day
Night
13th Jul 2025206 AMAQI
13th Jul 2025227 AMAQI
13th Jul 2025208 AMAQI
13th Jul 2025209 AMAQI
13th Jul 20252010 AMAQI
13th Jul 20252011 AMAQI
13th Jul 20251812 PMAQI
13th Jul 2025201 PMAQI
13th Jul 2025202 PMAQI
13th Jul 2025223 PMAQI
13th Jul 2025224 PMAQI
13th Jul 2025235 PMAQI
13th Jul 2025236 PMAQI
13th Jul 2025207 PMAQI
13th Jul 2025248 PMAQI
13th Jul 2025259 PMAQI
13th Jul 20252310 PMAQI
13th Jul 20252211 PMAQI
14th Jul 20252412 AMAQI
14th Jul 2025211 AMAQI
14th Jul 2025212 AMAQI
14th Jul 2025193 AMAQI
14th Jul 2025184 AMAQI
14th Jul 2025175 AMAQI

19°C11/31°C

14th Jul 2025166 AMAQI
14th Jul 2025177 AMAQI
14th Jul 2025168 AMAQI
14th Jul 2025179 AMAQI
14th Jul 20251610 AMAQI
14th Jul 20251611 AMAQI
14th Jul 20251612 PMAQI
14th Jul 2025161 PMAQI
14th Jul 2025192 PMAQI
14th Jul 2025173 PMAQI
14th Jul 2025174 PMAQI
14th Jul 2025175 PMAQI
14th Jul 2025176 PMAQI
14th Jul 2025177 PMAQI
14th Jul 2025198 PMAQI
14th Jul 2025289 PMAQI
14th Jul 20252710 PMAQI
14th Jul 20252311 PMAQI
15th Jul 20252012 AMAQI
15th Jul 2025231 AMAQI
15th Jul 2025222 AMAQI
15th Jul 2025173 AMAQI
15th Jul 2025144 AMAQI
15th Jul 2025145 AMAQI

21°C10/33°C

15th Jul 2025156 AMAQI
15th Jul 2025177 AMAQI
15th Jul 2025168 AMAQI
15th Jul 2025179 AMAQI
15th Jul 20251710 AMAQI
15th Jul 20251711 AMAQI
15th Jul 20251812 PMAQI
15th Jul 2025181 PMAQI
15th Jul 2025162 PMAQI
15th Jul 2025173 PMAQI
15th Jul 2025194 PMAQI
15th Jul 2025195 PMAQI
15th Jul 2025206 PMAQI
15th Jul 2025197 PMAQI
15th Jul 2025228 PMAQI
15th Jul 2025309 PMAQI
15th Jul 20253010 PMAQI
15th Jul 20252911 PMAQI
16th Jul 20252712 AMAQI
16th Jul 2025251 AMAQI
16th Jul 2025242 AMAQI
16th Jul 2025233 AMAQI
16th Jul 2025204 AMAQI
16th Jul 2025175 AMAQI

18°C10/28°C

16th Jul 2025186 AMAQI
16th Jul 2025237 AMAQI
16th Jul 2025238 AMAQI
16th Jul 2025279 AMAQI
16th Jul 20252810 AMAQI
16th Jul 20252411 AMAQI
16th Jul 20252112 PMAQI
16th Jul 2025201 PMAQI
16th Jul 2025212 PMAQI
16th Jul 2025203 PMAQI
16th Jul 2025224 PMAQI
16th Jul 2025245 PMAQI
16th Jul 2025256 PMAQI
16th Jul 2025247 PMAQI
16th Jul 2025248 PMAQI
16th Jul 2025229 PMAQI
16th Jul 20252610 PMAQI
16th Jul 20252811 PMAQI
17th Jul 20252812 AMAQI
17th Jul 2025241 AMAQI
17th Jul 2025202 AMAQI
17th Jul 2025203 AMAQI
17th Jul 2025184 AMAQI
17th Jul 2025185 AMAQI

16°C11/22°C

17th Jul 2025186 AMAQI
17th Jul 2025227 AMAQI
17th Jul 2025198 AMAQI
17th Jul 2025209 AMAQI
17th Jul 20252110 AMAQI
17th Jul 20252111 AMAQI
17th Jul 20252212 PMAQI
17th Jul 2025181 PMAQI
17th Jul 2025162 PMAQI
17th Jul 2025183 PMAQI
17th Jul 2025204 PMAQI
17th Jul 2025205 PMAQI
17th Jul 2025206 PMAQI
17th Jul 2025197 PMAQI
17th Jul 2025188 PMAQI
17th Jul 2025179 PMAQI
17th Jul 20252010 PMAQI
17th Jul 20252011 PMAQI
18th Jul 20252012 AMAQI
18th Jul 2025181 AMAQI
18th Jul 2025172 AMAQI
18th Jul 2025173 AMAQI
18th Jul 2025144 AMAQI
18th Jul 2025145 AMAQI

18°C11/29°C

18th Jul 2025196 AMAQI
18th Jul 2025197 AMAQI
18th Jul 2025158 AMAQI
18th Jul 2025149 AMAQI
18th Jul 20251510 AMAQI
18th Jul 20251411 AMAQI
18th Jul 20251512 PMAQI
18th Jul 2025151 PMAQI
18th Jul 2025162 PMAQI
18th Jul 2025203 PMAQI
18th Jul 2025204 PMAQI
18th Jul 2025205 PMAQI
18th Jul 2025186 PMAQI
18th Jul 2025167 PMAQI
18th Jul 2025168 PMAQI
18th Jul 2025169 PMAQI
18th Jul 20251610 PMAQI
18th Jul 20251911 PMAQI
19th Jul 20251912 AMAQI
19th Jul 2025181 AMAQI
19th Jul 2025192 AMAQI
19th Jul 2025213 AMAQI
19th Jul 2025184 AMAQI
19th Jul 2025225 AMAQI

19°C11/30°C

19th Jul 2025236 AMAQI
19th Jul 2025217 AMAQI
19th Jul 2025188 AMAQI
19th Jul 2025189 AMAQI
19th Jul 20251810 AMAQI
19th Jul 20251611 AMAQI
19th Jul 20251612 PMAQI
19th Jul 2025181 PMAQI
19th Jul 2025182 PMAQI
19th Jul 2025203 PMAQI
19th Jul 2025194 PMAQI
19th Jul 2025225 PMAQI
19th Jul 2025226 PMAQI
19th Jul 2025217 PMAQI
19th Jul 2025188 PMAQI
19th Jul 2025189 PMAQI
19th Jul 20251910 PMAQI
19th Jul 20251911 PMAQI
20th Jul 20251912 AMAQI
20th Jul 2025171 AMAQI
20th Jul 2025182 AMAQI
20th Jul 2025163 AMAQI
20th Jul 2025164 AMAQI
20th Jul 2025155 AMAQI

19°C9/30°C

20th Jul 2025166 AMAQI
20th Jul 2025167 AMAQI
20th Jul 2025168 AMAQI
20th Jul 2025169 AMAQI
20th Jul 20251610 AMAQI
20th Jul 20251711 AMAQI
20th Jul 20251812 PMAQI
20th Jul 2025141 PMAQI
20th Jul 2025152 PMAQI
20th Jul 2025163 PMAQI
20th Jul 2025204 PMAQI
20th Jul 2025195 PMAQI
20th Jul 2025216 PMAQI
20th Jul 2025197 PMAQI
20th Jul 2025198 PMAQI
20th Jul 2025259 PMAQI
20th Jul 20252410 PMAQI
20th Jul 20252511 PMAQI
21st Jul 20252812 AMAQI
21st Jul 2025261 AMAQI
21st Jul 2025252 AMAQI
21st Jul 2025243 AMAQI
21st Jul 2025254 AMAQI
21st Jul 2025185 AMAQI

20°C10/31°C

21st Jul 2025186 AMAQI
21st Jul 2025187 AMAQI
21st Jul 2025188 AMAQI
21st Jul 2025189 AMAQI
21st Jul 20251910 AMAQI
21st Jul 20252311 AMAQI
21st Jul 20252212 PMAQI
21st Jul 2025241 PMAQI
21st Jul 2025242 PMAQI
21st Jul 2025243 PMAQI
21st Jul 2025224 PMAQI
21st Jul 2025225 PMAQI
21st Jul 2025216 PMAQI
21st Jul 2025217 PMAQI
21st Jul 2025228 PMAQI
21st Jul 2025209 PMAQI
21st Jul 20252010 PMAQI
21st Jul 20252111 PMAQI
22nd Jul 20252112 AMAQI
22nd Jul 2025211 AMAQI
22nd Jul 2025182 AMAQI
22nd Jul 2025173 AMAQI
22nd Jul 2025124 AMAQI
22nd Jul 2025115 AMAQI

18°C11/28°C

22nd Jul 2025126 AMAQI
22nd Jul 2025137 AMAQI
22nd Jul 2025168 AMAQI
22nd Jul 2025169 AMAQI
22nd Jul 20251610 AMAQI
22nd Jul 20251611 AMAQI
22nd Jul 20251712 PMAQI
22nd Jul 2025141 PMAQI
22nd Jul 2025142 PMAQI
22nd Jul 2025163 PMAQI
22nd Jul 2025164 PMAQI
22nd Jul 2025155 PMAQI
22nd Jul 2025156 PMAQI
22nd Jul 2025177 PMAQI
22nd Jul 2025168 PMAQI
22nd Jul 2025169 PMAQI
22nd Jul 20251610 PMAQI
22nd Jul 20251711 PMAQI
23rd Jul 20251612 AMAQI
23rd Jul 2025141 AMAQI
23rd Jul 2025162 AMAQI
23rd Jul 2025143 AMAQI
23rd Jul 2025144 AMAQI
23rd Jul 2025165 AMAQI

16°C9/24°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 2025162 PMAQI
23rd Jul 2025153 PMAQI
23rd Jul 2025174 PMAQI
23rd Jul 2025165 PMAQI
23rd Jul 2025166 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 2025161 AMAQI
24th Jul 2025142 AMAQI
24th Jul 2025153 AMAQI
24th Jul 2025134 AMAQI
24th Jul 2025135 AMAQI

17°C11/24°C

24th Jul 2025146 AMAQI
24th Jul 2025147 AMAQI
24th Jul 2025148 AMAQI
24th Jul 2025149 AMAQI
24th Jul 20251410 AMAQI
24th Jul 20251511 AMAQI
24th Jul 20251612 PMAQI
24th Jul 2025141 PMAQI
24th Jul 2025162 PMAQI
24th Jul 2025163 PMAQI
24th Jul 2025164 PMAQI
24th Jul 2025155 PMAQI
24th Jul 2025166 PMAQI
24th Jul 2025157 PMAQI
24th Jul 2025168 PMAQI
24th Jul 2025159 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

17°C11/26°C

25th Jul 2025136 AMAQI
25th Jul 2025147 AMAQI
25th Jul 2025148 AMAQI
25th Jul 2025149 AMAQI
25th Jul 20251410 AMAQI
25th Jul 20251511 AMAQI
25th Jul 20251412 PMAQI
25th Jul 2025141 PMAQI
25th Jul 2025152 PMAQI
25th Jul 2025163 PMAQI
25th Jul 2025164 PMAQI
25th Jul 2025155 PMAQI
25th Jul 2025166 PMAQI
25th Jul 2025167 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 2025163 AMAQI
26th Jul 2025144 AMAQI
26th Jul 2025145 AMAQI

17°C11/26°C

26th Jul 2025146 AMAQI
26th Jul 2025137 AMAQI
26th Jul 2025138 AMAQI
26th Jul 2025149 AMAQI
26th Jul 20251410 AMAQI
26th Jul 20251411 AMAQI
26th Jul 20251512 PMAQI
26th Jul 2025171 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 20251410 PMAQI
26th Jul 20251511 PMAQI
27th Jul 20251612 AMAQI
27th Jul 2025151 AMAQI
27th Jul 2025162 AMAQI
27th Jul 2025153 AMAQI
27th Jul 2025144 AMAQI
27th Jul 2025165 AMAQI

18°C11/25°C

27th Jul 2025146 AMAQI
27th Jul 2025177 AMAQI
27th Jul 2025178 AMAQI
27th Jul 2025179 AMAQI
27th Jul 20251510 AMAQI
27th Jul 20251511 AMAQI
27th Jul 20251512 PMAQI
27th Jul 2025161 PMAQI
27th Jul 2025152 PMAQI
27th Jul 2025163 PMAQI
27th Jul 2025164 PMAQI
27th Jul 2025165 PMAQI
27th Jul 2025166 PMAQI
27th Jul 2025157 PMAQI
27th Jul 2025148 PMAQI
27th Jul 2025169 PMAQI
27th Jul 20251710 PMAQI
27th Jul 20251711 PMAQI
28th Jul 20251712 AMAQI
28th Jul 2025161 AMAQI
28th Jul 2025172 AMAQI
28th Jul 2025183 AMAQI
28th Jul 2025174 AMAQI
28th Jul 2025155 AMAQI

19°C10/29°C

28th Jul 2025156 AMAQI
28th Jul 2025187 AMAQI
28th Jul 2025188 AMAQI
28th Jul 2025189 AMAQI
28th Jul 20251610 AMAQI
28th Jul 20251711 AMAQI
28th Jul 20251612 PMAQI
28th Jul 2025161 PMAQI
28th Jul 2025172 PMAQI
28th Jul 2025183 PMAQI
28th Jul 2025194 PMAQI
28th Jul 2025245 PMAQI
28th Jul 2025196 PMAQI
28th Jul 2025207 PMAQI
28th Jul 2025198 PMAQI
28th Jul 2025189 PMAQI
28th Jul 20252010 PMAQI
28th Jul 20251811 PMAQI
29th Jul 20252112 AMAQI
29th Jul 2025231 AMAQI
29th Jul 2025212 AMAQI
29th Jul 2025203 AMAQI
29th Jul 2025174 AMAQI
29th Jul 2025175 AMAQI

22°C11/33°C

29th Jul 2025176 AMAQI
29th Jul 2025187 AMAQI
29th Jul 2025188 AMAQI
29th Jul 2025189 AMAQI
29th Jul 20252010 AMAQI
29th Jul 20252011 AMAQI
29th Jul 20252112 PMAQI
29th Jul 2025221 PMAQI
29th Jul 2025222 PMAQI
29th Jul 2025243 PMAQI
29th Jul 2025244 PMAQI
29th Jul 2025245 PMAQI
29th Jul 2025226 PMAQI
29th Jul 2025207 PMAQI
29th Jul 2025218 PMAQI
29th Jul 2025219 PMAQI
29th Jul 20252210 PMAQI
29th Jul 20252511 PMAQI
30th Jul 20252412 AMAQI
30th Jul 2025231 AMAQI
30th Jul 2025222 AMAQI
30th Jul 2025223 AMAQI
30th Jul 2025244 AMAQI
30th Jul 2025265 AMAQI

23°C14/34°C

30th Jul 2025246 AMAQI
30th Jul 2025247 AMAQI
30th Jul 2025288 AMAQI
30th Jul 2025269 AMAQI
30th Jul 20252010 AMAQI
30th Jul 20251811 AMAQI
30th Jul 20251912 PMAQI
30th Jul 2025201 PMAQI
30th Jul 2025222 PMAQI
30th Jul 2025223 PMAQI
30th Jul 2025224 PMAQI
30th Jul 2025225 PMAQI
30th Jul 2025226 PMAQI
30th Jul 2025227 PMAQI
30th Jul 2025228 PMAQI
30th Jul 2025259 PMAQI
30th Jul 20252610 PMAQI
30th Jul 20252611 PMAQI
31st Jul 20252712 AMAQI
31st Jul 2025251 AMAQI
31st Jul 2025222 AMAQI
31st Jul 2025203 AMAQI
31st Jul 2025184 AMAQI
31st Jul 2025165 AMAQI

21°C13/32°C

31st Jul 2025186 AMAQI
31st Jul 2025227 AMAQI
31st Jul 2025208 AMAQI
31st Jul 2025199 AMAQI
31st Jul 20251810 AMAQI
31st Jul 20251911 AMAQI
31st Jul 20252012 PMAQI
31st Jul 2025221 PMAQI
31st Jul 2025232 PMAQI
31st Jul 2025233 PMAQI
31st Jul 2025254 PMAQI
31st Jul 2025265 PMAQI
31st Jul 2025266 PMAQI
31st Jul 2025217 PMAQI
31st Jul 2025238 PMAQI
31st Jul 2025229 PMAQI
31st Jul 20252310 PMAQI
31st Jul 20252411 PMAQI
1st Aug 20252612 AMAQI
1st Aug 2025251 AMAQI
1st Aug 2025202 AMAQI
1st Aug 2025213 AMAQI
1st Aug 2025194 AMAQI
1st Aug 2025205 AMAQI

22°C12/33°C

1st Aug 2025186 AMAQI
1st Aug 2025177 AMAQI
1st Aug 2025198 AMAQI
1st Aug 2025189 AMAQI
1st Aug 20251610 AMAQI
1st Aug 20251911 AMAQI
1st Aug 20252112 PMAQI
1st Aug 2025211 PMAQI
1st Aug 2025222 PMAQI
1st Aug 2025243 PMAQI
1st Aug 2025254 PMAQI
1st Aug 2025265 PMAQI
1st Aug 2025306 PMAQI
1st Aug 2025217 PMAQI
1st Aug 2025248 PMAQI
1st Aug 2025249 PMAQI
1st Aug 20252510 PMAQI
1st Aug 20252611 PMAQI
2nd Aug 20252612 AMAQI
2nd Aug 2025221 AMAQI
2nd Aug 2025192 AMAQI
2nd Aug 2025233 AMAQI
2nd Aug 2025224 AMAQI
2nd Aug 2025195 AMAQI

23°C13/33°C

2nd Aug 2025176 AMAQI
2nd Aug 2025187 AMAQI
2nd Aug 2025198 AMAQI
2nd Aug 2025189 AMAQI
2nd Aug 20251610 AMAQI
2nd Aug 20251811 AMAQI
2nd Aug 20251812 PMAQI
2nd Aug 2025171 PMAQI
2nd Aug 2025162 PMAQI
2nd Aug 2025183 PMAQI
2nd Aug 2025204 PMAQI
2nd Aug 2025215 PMAQI
2nd Aug 2025296 PMAQI
2nd Aug 2025237 PMAQI
2nd Aug 2025208 PMAQI
2nd Aug 2025189 PMAQI
2nd Aug 20252010 PMAQI
2nd Aug 20252311 PMAQI
3rd Aug 20252412 AMAQI
3rd Aug 2025261 AMAQI
3rd Aug 2025262 AMAQI
3rd Aug 2025263 AMAQI
3rd Aug 2025244 AMAQI
3rd Aug 2025225 AMAQI

24°C14/35°C

3rd Aug 2025236 AMAQI
3rd Aug 2025227 AMAQI
3rd Aug 2025208 AMAQI
3rd Aug 2025189 AMAQI
3rd Aug 20251910 AMAQI
3rd Aug 20252011 AMAQI
3rd Aug 20252112 PMAQI
3rd Aug 2025251 PMAQI
3rd Aug 2025362 PMAQI
3rd Aug 2025383 PMAQI
3rd Aug 2025374 PMAQI
3rd Aug 2025365 PMAQI
3rd Aug 2025366 PMAQI
3rd Aug 2025267 PMAQI
3rd Aug 2025308 PMAQI
3rd Aug 2025359 PMAQI
3rd Aug 20253410 PMAQI
3rd Aug 20253811 PMAQI
4th Aug 20253412 AMAQI
4th Aug 2025281 AMAQI
4th Aug 2025312 AMAQI
4th Aug 2025353 AMAQI
4th Aug 2025304 AMAQI
4th Aug 2025255 AMAQI

23°C14/34°C

4th Aug 2025286 AMAQI
4th Aug 2025327 AMAQI
4th Aug 2025318 AMAQI
4th Aug 2025329 AMAQI
4th Aug 20253110 AMAQI
4th Aug 20253211 AMAQI
4th Aug 20253412 PMAQI
4th Aug 2025311 PMAQI
4th Aug 2025282 PMAQI
4th Aug 2025293 PMAQI
4th Aug 2025364 PMAQI
4th Aug 2025335 PMAQI
4th Aug 2025296 PMAQI
4th Aug 2025327 PMAQI
4th Aug 2025288 PMAQI
4th Aug 2025259 PMAQI
4th Aug 20252610 PMAQI
4th Aug 20252411 PMAQI
5th Aug 20252812 AMAQI
5th Aug 2025271 AMAQI
5th Aug 2025262 AMAQI
5th Aug 2025253 AMAQI
5th Aug 2025294 AMAQI
5th Aug 2025265 AMAQI

22°C13/34°C

5th Aug 2025256 AMAQI
5th Aug 2025327 AMAQI
5th Aug 2025298 AMAQI
5th Aug 2025269 AMAQI
5th Aug 20253210 AMAQI
5th Aug 20252811 AMAQI
5th Aug 20252612 PMAQI
5th Aug 2025271 PMAQI
5th Aug 2025302 PMAQI
5th Aug 2025303 PMAQI
5th Aug 2025284 PMAQI
5th Aug 2025305 PMAQI
5th Aug 2025326 PMAQI
5th Aug 2025277 PMAQI
5th Aug 2025258 PMAQI
5th Aug 2025259 PMAQI
5th Aug 20253010 PMAQI
5th Aug 20252811 PMAQI
6th Aug 20253012 AMAQI
6th Aug 2025321 AMAQI
6th Aug 2025342 AMAQI
6th Aug 2025343 AMAQI
6th Aug 2025334 AMAQI
6th Aug 2025305 AMAQI

22°C13/32°C

6th Aug 2025296 AMAQI
6th Aug 2025327 AMAQI
6th Aug 2025318 AMAQI
6th Aug 2025309 AMAQI
6th Aug 20253010 AMAQI
6th Aug 20252811 AMAQI
6th Aug 20253012 PMAQI
6th Aug 2025381 PMAQI
6th Aug 2025382 PMAQI
6th Aug 2025393 PMAQI
6th Aug 2025364 PMAQI
6th Aug 2025365 PMAQI
6th Aug 2025346 PMAQI
6th Aug 2025307 PMAQI
6th Aug 2025318 PMAQI
6th Aug 2025309 PMAQI
6th Aug 20252910 PMAQI
6th Aug 20252411 PMAQI
7th Aug 20252912 AMAQI
7th Aug 2025271 AMAQI
7th Aug 2025282 AMAQI
7th Aug 2025293 AMAQI
7th Aug 2025244 AMAQI
7th Aug 2025215 AMAQI

25°C14/37°C

7th Aug 2025206 AMAQI
7th Aug 2025207 AMAQI
7th Aug 2025208 AMAQI
7th Aug 2025209 AMAQI
7th Aug 20252010 AMAQI
7th Aug 20252311 AMAQI
7th Aug 20252612 PMAQI
7th Aug 2025281 PMAQI
7th Aug 2025242 PMAQI
7th Aug 2025243 PMAQI
7th Aug 2025244 PMAQI
7th Aug 2025245 PMAQI
7th Aug 2025226 PMAQI
7th Aug 2025227 PMAQI
7th Aug 2025218 PMAQI
7th Aug 2025219 PMAQI
7th Aug 20252210 PMAQI
7th Aug 20252411 PMAQI
8th Aug 20252812 AMAQI
8th Aug 2025301 AMAQI
8th Aug 2025322 AMAQI
8th Aug 2025323 AMAQI
8th Aug 2025274 AMAQI
8th Aug 2025265 AMAQI

26°C15/36°C

8th Aug 2025256 AMAQI
8th Aug 2025267 AMAQI
8th Aug 2025248 AMAQI
8th Aug 2025249 AMAQI
8th Aug 20252510 AMAQI
8th Aug 20252411 AMAQI
8th Aug 20252612 PMAQI
8th Aug 2025241 PMAQI
8th Aug 2025232 PMAQI
8th Aug 2025263 PMAQI
8th Aug 2025244 PMAQI
8th Aug 2025265 PMAQI
8th Aug 2025276 PMAQI
8th Aug 2025257 PMAQI
8th Aug 2025278 PMAQI
8th Aug 2025259 PMAQI
8th Aug 20252610 PMAQI
8th Aug 20252611 PMAQI
9th Aug 20252712 AMAQI
9th Aug 2025321 AMAQI
9th Aug 2025302 AMAQI
9th Aug 2025313 AMAQI
9th Aug 2025304 AMAQI
9th Aug 2025325 AMAQI

27°C17/39°C

9th Aug 2025316 AMAQI
9th Aug 2025317 AMAQI
9th Aug 2025268 AMAQI
9th Aug 2025249 AMAQI
9th Aug 20252510 AMAQI
9th Aug 20252511 AMAQI
9th Aug 20252612 PMAQI
9th Aug 2025241 PMAQI
9th Aug 2025262 PMAQI
9th Aug 2025303 PMAQI
9th Aug 2025284 PMAQI
9th Aug 2025295 PMAQI
9th Aug 2025296 PMAQI
9th Aug 2025307 PMAQI
9th Aug 2025288 PMAQI
9th Aug 2025279 PMAQI
9th Aug 20252610 PMAQI
9th Aug 20252811 PMAQI
10th Aug 20253012 AMAQI
10th Aug 2025291 AMAQI
10th Aug 2025302 AMAQI
10th Aug 2025303 AMAQI
10th Aug 2025294 AMAQI
10th Aug 2025295 AMAQI

25°C18/36°C

10th Aug 2025306 AMAQI
10th Aug 2025327 AMAQI
10th Aug 2025258 AMAQI
10th Aug 2025249 AMAQI
10th Aug 20252510 AMAQI
10th Aug 20252411 AMAQI
10th Aug 20252512 PMAQI
10th Aug 2025251 PMAQI
10th Aug 2025262 PMAQI
10th Aug 2025273 PMAQI
10th Aug 2025274 PMAQI
10th Aug 2025285 PMAQI
10th Aug 2025296 PMAQI
10th Aug 2025277 PMAQI
10th Aug 2025268 PMAQI
10th Aug 2025279 PMAQI
10th Aug 20252610 PMAQI
10th Aug 20252611 PMAQI
11th Aug 20252712 AMAQI
11th Aug 2025311 AMAQI
11th Aug 2025312 AMAQI
11th Aug 2025293 AMAQI
11th Aug 2025304 AMAQI
11th Aug 2025305 AMAQI

24°C16/36°C

11th Aug 2025266 AMAQI
11th Aug 2025237 AMAQI
11th Aug 2025268 AMAQI
11th Aug 2025269 AMAQI
11th Aug 20252610 AMAQI
11th Aug 20253111 AMAQI
11th Aug 20252912 PMAQI
11th Aug 2025281 PMAQI
11th Aug 2025302 PMAQI
11th Aug 2025283 PMAQI
11th Aug 2025314 PMAQI
11th Aug 2025305 PMAQI
11th Aug 2025326 PMAQI
11th Aug 2025257 PMAQI
11th Aug 2025308 PMAQI
11th Aug 2025359 PMAQI
11th Aug 20253310 PMAQI
11th Aug 20253111 PMAQI
12th Aug 20253312 AMAQI

22°C14/33°C

6 AM
1 PM
8 PM
1 AM
5 AM

--°C/°C

Day time
Avg. Highest Time
6 AM - 6 PM

21AQI

13 hours / Day
390 hours / Month
Avg. Lowest Time
6 AM - 8 PM

21AQI

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. 21), while the lowest AQI was between 6 AM to 8 PM (Avg. 21).
Night time
Avg. Highest Time
12 AM - 3 AM

23AQI

4 hours / Day
120 hours / Month
Avg. Lowest Time
4 AM - 5 AM

21AQI

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. 23), while the lowest AQI was between 4 AM to 5 AM (Avg. 21).

2025 Days Vs Air Quality

Healdsburg, California, United States

2025

100%

221

0.4%

1

Total number of days with different AQI categories in last 224 days in 2025 (141 days remaining)

Good
221 Days
Moderate
1 Days
Poor
0 Days
Unhealthy
0 Days
Severe
0 Days
Hazardous
0 Days



Under WHO’s Safe Air Quality Limits: 100%

Health Risk Level:

Very Low

In 2025, 100% of 224 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

Healdsburg, 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
38AQI
2nd January 2025
31AQI
3rd January 2025
41AQI
4th January 2025
26AQI
5th January 2025
33AQI
6th January 2025
25AQI
7th January 2025
21AQI
8th January 2025
24AQI
9th January 2025
33AQI
10th January 2025
36AQI
11th January 2025
30AQI
12th January 2025
25AQI
13th January 2025
31AQI
14th January 2025
31AQI
15th January 2025
46AQI
16th January 2025
44AQI
17th January 2025
42AQI
18th January 2025
44AQI
19th January 2025
48AQI
20th January 2025
38AQI
21st January 2025
41AQI
22nd January 2025
47AQI
23rd January 2025
49AQI
24th January 2025
46AQI
25th January 2025
39AQI
26th January 2025
39AQI
27th January 2025
41AQI
28th January 2025
50AQI
29th January 2025
46AQI
30th January 2025
54AQI
31st January 2025
45AQI
1st February 2025
29AQI
2nd February 2025
21AQI
3rd February 2025
21AQI
4th February 2025
22AQI
5th February 2025
23AQI
6th February 2025
27AQI
7th February 2025
22AQI
8th February 2025
25AQI
9th February 2025
27AQI
10th February 2025
33AQI
11th February 2025
32AQI
12th February 2025
36AQI
13th February 2025
26AQI
14th February 2025
28AQI
15th February 2025
26AQI
16th February 2025
26AQI
17th February 2025
22AQI
18th February 2025
25AQI
19th February 2025
23AQI
20th February 2025
22AQI
21st February 2025
24AQI
22nd February 2025
28AQI
23rd February 2025
22AQI
24th February 2025
20AQI
25th February 2025
22AQI
26th February 2025
26AQI
27th February 2025
29AQI
28th February 2025
33AQI
1st March 2025
30AQI
2nd March 2025
20AQI
3rd March 2025
19AQI
4th March 2025
21AQI
5th March 2025
22AQI
6th March 2025
21AQI
7th March 2025
27AQI
8th March 2025
33AQI
9th March 2025
32AQI
10th March 2025
27AQI
11th March 2025
26AQI
12th March 2025
20AQI
13th March 2025
20AQI
14th March 2025
18AQI
15th March 2025
22AQI
16th March 2025
19AQI
17th March 2025
15AQI
18th March 2025
18AQI
19th March 2025
19AQI
20th March 2025
17AQI
21st March 2025
23AQI
22nd March 2025
18AQI
23rd March 2025
21AQI
24th March 2025
20AQI
25th March 2025
25AQI
26th March 2025
28AQI
27th March 2025
20AQI
28th March 2025
22AQI
29th March 2025
20AQI
30th March 2025
23AQI
31st March 2025
20AQI
1st April 2025
22AQI
2nd April 2025
18AQI
3rd April 2025
20AQI
4th April 2025
22AQI
5th April 2025
26AQI
6th April 2025
19AQI
7th April 2025
14AQI
8th April 2025
17AQI
9th April 2025
17AQI
10th April 2025
18AQI
11th April 2025
20AQI
12th April 2025
22AQI
13th April 2025
24AQI
14th April 2025
24AQI
15th April 2025
26AQI
16th April 2025
24AQI
17th April 2025
20AQI
18th April 2025
23AQI
19th April 2025
26AQI
20th April 2025
19AQI
21st April 2025
20AQI
22nd April 2025
31AQI
23rd April 2025
36AQI
24th April 2025
31AQI
25th April 2025
19AQI
26th April 2025
19AQI
27th April 2025
17AQI
28th April 2025
20AQI
29th April 2025
27AQI
30th April 2025
28AQI
1st May 2025
33AQI
2nd May 2025
25AQI
3rd May 2025
17AQI
4th May 2025
20AQI
5th May 2025
24AQI
6th May 2025
29AQI
7th May 2025
36AQI
8th May 2025
22AQI
9th May 2025
24AQI
10th May 2025
20AQI
11th May 2025
18AQI
12th May 2025
16AQI
13th May 2025
16AQI
14th May 2025
20AQI
15th May 2025
24AQI
16th May 2025
26AQI
17th May 2025
23AQI
18th May 2025
20AQI
19th May 2025
18AQI
20th May 2025
16AQI
21st May 2025
27AQI
22nd May 2025
21AQI
23rd May 2025
17AQI
24th May 2025
27AQI
25th May 2025
20AQI
26th May 2025
15AQI
27th May 2025
21AQI
28th May 2025
23AQI
29th May 2025
18AQI
30th May 2025
22AQI
31st May 2025
34AQI
1st June 2025
43AQI
2nd June 2025
46AQI
3rd June 2025
35AQI
4th June 2025
30AQI
5th June 2025
24AQI
6th June 2025
19AQI
7th June 2025
18AQI
8th June 2025
20AQI
9th June 2025
25AQI
10th June 2025
27AQI
11th June 2025
27AQI
12th June 2025
36AQI
13th June 2025
37AQI
14th June 2025
35AQI
15th June 2025
36AQI
16th June 2025
28AQI
17th June 2025
26AQI
18th June 2025
24AQI
19th June 2025
30AQI
20th June 2025
30AQI
21st June 2025
23AQI
22nd June 2025
20AQI
23rd June 2025
24AQI
24th June 2025
23AQI
25th June 2025
20AQI
26th June 2025
20AQI
27th June 2025
23AQI
28th June 2025
25AQI
29th June 2025
24AQI
30th June 2025
21AQI
1st July 2025
21AQI
2nd July 2025
20AQI
3rd July 2025
24AQI
4th July 2025
25AQI
5th July 2025
29AQI
6th July 2025
27AQI
7th July 2025
20AQI
8th July 2025
21AQI
9th July 2025
18AQI
10th July 2025
22AQI
11th July 2025
33AQI
12th July 2025
34AQI
13th July 2025
25AQI
14th July 2025
19AQI
15th July 2025
20AQI
16th July 2025
23AQI
17th July 2025
20AQI
18th July 2025
17AQI
19th July 2025
19AQI
20th July 2025
18AQI
21st July 2025
22AQI
22nd July 2025
16AQI
23rd July 2025
15AQI
24th July 2025
15AQI
25th July 2025
15AQI
26th July 2025
15AQI
27th July 2025
16AQI
28th July 2025
18AQI
29th July 2025
20AQI
30th July 2025
23AQI
31st July 2025
22AQI
1st August 2025
22AQI
2nd August 2025
20AQI
3rd August 2025
28AQI
4th August 2025
30AQI
5th August 2025
27AQI
6th August 2025
32AQI
7th August 2025
24AQI
8th August 2025
27AQI
9th August 2025
28AQI
10th August 2025
27AQI

38AQI

26AQI

22AQI

22AQI

22AQI

27AQI

21AQI

27AQI


No. of days

Jan.Feb.Mar.Apr.MayJun.Jul.Aug.Sep.Oct.Nov.Dec.Total Days

202526AQI

30
1
28
31
30
31
30
31
10
221
1

Highest AQI recorded in

January

38AQI


Lowest AQI recorded in

July

21AQI


202431AQI

11
5
1
12
29
31
31
28
28
3
26
4
23
8
220
20

Highest AQI recorded in

January

48AQI


Lowest AQI recorded in

May

21AQI


202337AQI

2
1
27
4
29
5

Highest AQI recorded in

November

49AQI


Lowest AQI recorded in

December

36AQI


202265AQI

1
13
1
1
2
1
1
10
1
23
2
1
3
1
1

Highest AQI recorded in

April

151AQI


Lowest AQI recorded in

October

34AQI


202130AQI

4
4
1
31
6
41
4
1

Highest AQI recorded in

September

49AQI


Lowest AQI recorded in

November

20AQI


202085AQI

2
1
9
14
2
5
2
1
10
16
3
7

Highest AQI recorded in

October

156AQI


Lowest AQI recorded in

November

46AQI


Most & Least Polluted Years Over the Last 6 Years

Most Polluted Year Recorded
2020(Avg.)
85AQI
Least Polluted Year Recorded
2025(Avg.)
26AQI


Healdsburg's annual 2025 AQI (26) shows an average percentage change of -38.3% (improved AQI) compared to previous years: 2020 (85), 2021 (30), 2022 (65), 2023 (37), 2024 (31).