Guerneville, Windsor, 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
Guerneville, Windsor, California, United States
2024
2025
AQI
.
Days
AQI Trends: Highest and Lowest
Highest AQI recorded on
5th Aug 2024
37AQILowest AQI recorded on
24th Aug 2024
19AQISame Day Analysis (7th August ):
On this day, AQI across the 2 years varied significantly: 2025 ranks 2nd highest AQI at 25 of Good air quality, showing improvement over 2024 on the same day.
Download 2024 Annual Data
World Air Quality Report
Day & Night AQI Trend: 7th Aug - 8th Aug 2025
Guerneville, Windsor, California, United States
AQI
Day
Night
.
6 AM7th Aug 2025
8 PM
5 AM8th Aug 2025
Day time
Avg. Highest Time
1PM7th Aug
28AQI
Avg. Lowest Time
10AM7th Aug
20AQI
Night time
Avg. Highest Time
4AM8th Aug
34AQI
Avg. Lowest Time
10PM7th Aug
21AQI
In the last 24 hours,
Guerneville's AQI reached its highest point of 34 at 4 AM during the Night, while the lowest point, 20, was recorded at 10 AM during the Day between 7th Aug and 8th Aug 2025.
Day & Night AQI Trend : Jul - Aug 2025
Guerneville, Windsor, California, United States
JulAug
09th - 10th10th - 11th11th - 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
Day
Night
9th Jul 2025156 AMAQI
9th Jul 2025167 AMAQI
9th Jul 2025168 AMAQI
9th Jul 2025189 AMAQI
9th Jul 20251610 AMAQI
9th Jul 20251611 AMAQI
9th Jul 20251612 PMAQI
9th Jul 2025161 PMAQI
9th Jul 2025162 PMAQI
9th Jul 2025173 PMAQI
9th Jul 2025184 PMAQI
9th Jul 2025175 PMAQI
9th Jul 2025186 PMAQI
9th Jul 2025167 PMAQI
9th Jul 2025188 PMAQI
9th Jul 2025189 PMAQI
9th Jul 20251810 PMAQI
9th Jul 20251711 PMAQI
10th Jul 20251812 AMAQI
10th Jul 2025181 AMAQI
10th Jul 2025192 AMAQI
10th Jul 2025213 AMAQI
10th Jul 2025204 AMAQI
10th Jul 2025205 AMAQI
21°C11/32°C
10th Jul 2025196 AMAQI
10th Jul 2025177 AMAQI
10th Jul 2025168 AMAQI
10th Jul 2025169 AMAQI
10th Jul 20251610 AMAQI
10th Jul 20251611 AMAQI
10th Jul 20251712 PMAQI
10th Jul 2025141 PMAQI
10th Jul 2025172 PMAQI
10th Jul 2025183 PMAQI
10th Jul 2025204 PMAQI
10th Jul 2025245 PMAQI
10th Jul 2025286 PMAQI
10th Jul 2025207 PMAQI
10th Jul 2025198 PMAQI
10th Jul 2025219 PMAQI
10th Jul 20252210 PMAQI
10th Jul 20252411 PMAQI
11th Jul 20252412 AMAQI
11th Jul 2025241 AMAQI
11th Jul 2025252 AMAQI
11th Jul 2025273 AMAQI
11th Jul 2025344 AMAQI
11th Jul 2025355 AMAQI
26°C16/36°C
11th Jul 2025346 AMAQI
11th Jul 2025317 AMAQI
11th Jul 2025278 AMAQI
11th Jul 2025269 AMAQI
11th Jul 20252610 AMAQI
11th Jul 20252711 AMAQI
11th Jul 20253212 PMAQI
11th Jul 2025361 PMAQI
11th Jul 2025362 PMAQI
11th Jul 2025363 PMAQI
11th Jul 2025354 PMAQI
11th Jul 2025345 PMAQI
11th Jul 2025356 PMAQI
11th Jul 2025337 PMAQI
11th Jul 2025338 PMAQI
11th Jul 2025359 PMAQI
11th Jul 20253210 PMAQI
11th Jul 20253611 PMAQI
12th Jul 20253712 AMAQI
12th Jul 2025321 AMAQI
12th Jul 2025252 AMAQI
12th Jul 2025253 AMAQI
12th Jul 2025274 AMAQI
12th Jul 2025365 AMAQI
26°C17/38°C
12th Jul 2025366 AMAQI
12th Jul 2025367 AMAQI
12th Jul 2025288 AMAQI
12th Jul 2025289 AMAQI
12th Jul 20252910 AMAQI
12th Jul 20252411 AMAQI
12th Jul 20252212 PMAQI
12th Jul 2025221 PMAQI
12th Jul 2025242 PMAQI
12th Jul 2025263 PMAQI
12th Jul 2025294 PMAQI
12th Jul 2025325 PMAQI
12th Jul 2025326 PMAQI
12th Jul 2025327 PMAQI
12th Jul 2025328 PMAQI
12th Jul 2025369 PMAQI
12th Jul 20253510 PMAQI
12th Jul 20253411 PMAQI
13th Jul 20253012 AMAQI
13th Jul 2025311 AMAQI
13th Jul 2025292 AMAQI
13th Jul 2025303 AMAQI
13th Jul 2025244 AMAQI
13th Jul 2025205 AMAQI
21°C12/32°C
13th Jul 2025186 AMAQI
13th Jul 2025207 AMAQI
13th Jul 2025188 AMAQI
13th Jul 2025189 AMAQI
13th Jul 20251910 AMAQI
13th Jul 20251811 AMAQI
13th Jul 20251712 PMAQI
13th Jul 2025181 PMAQI
13th Jul 2025202 PMAQI
13th Jul 2025213 PMAQI
13th Jul 2025224 PMAQI
13th Jul 2025225 PMAQI
13th Jul 2025226 PMAQI
13th Jul 2025207 PMAQI
13th Jul 2025208 PMAQI
13th Jul 2025209 PMAQI
13th Jul 20251910 PMAQI
13th Jul 20252111 PMAQI
14th Jul 20252212 AMAQI
14th Jul 2025201 AMAQI
14th Jul 2025192 AMAQI
14th Jul 2025193 AMAQI
14th Jul 2025164 AMAQI
14th Jul 2025165 AMAQI
19°C11/31°C
14th Jul 2025166 AMAQI
14th Jul 2025167 AMAQI
14th Jul 2025168 AMAQI
14th Jul 2025169 AMAQI
14th Jul 20251510 AMAQI
14th Jul 20251511 AMAQI
14th Jul 20251612 PMAQI
14th Jul 2025161 PMAQI
14th Jul 2025182 PMAQI
14th Jul 2025163 PMAQI
14th Jul 2025174 PMAQI
14th Jul 2025175 PMAQI
14th Jul 2025176 PMAQI
14th Jul 2025177 PMAQI
14th Jul 2025188 PMAQI
14th Jul 2025239 PMAQI
14th Jul 20252410 PMAQI
14th Jul 20252211 PMAQI
15th Jul 20251812 AMAQI
15th Jul 2025181 AMAQI
15th Jul 2025162 AMAQI
15th Jul 2025163 AMAQI
15th Jul 2025144 AMAQI
15th Jul 2025135 AMAQI
21°C10/33°C
15th Jul 2025146 AMAQI
15th Jul 2025147 AMAQI
15th Jul 2025148 AMAQI
15th Jul 2025159 AMAQI
15th Jul 20251510 AMAQI
15th Jul 20251611 AMAQI
15th Jul 20251712 PMAQI
15th Jul 2025151 PMAQI
15th Jul 2025152 PMAQI
15th Jul 2025173 PMAQI
15th Jul 2025184 PMAQI
15th Jul 2025185 PMAQI
15th Jul 2025206 PMAQI
15th Jul 2025187 PMAQI
15th Jul 2025198 PMAQI
15th Jul 2025259 PMAQI
15th Jul 20252710 PMAQI
15th Jul 20252611 PMAQI
16th Jul 20252512 AMAQI
16th Jul 2025231 AMAQI
16th Jul 2025232 AMAQI
16th Jul 2025223 AMAQI
16th Jul 2025204 AMAQI
16th Jul 2025185 AMAQI
18°C10/28°C
16th Jul 2025206 AMAQI
16th Jul 2025187 AMAQI
16th Jul 2025188 AMAQI
16th Jul 2025179 AMAQI
16th Jul 20251910 AMAQI
16th Jul 20251811 AMAQI
16th Jul 20251612 PMAQI
16th Jul 2025181 PMAQI
16th Jul 2025182 PMAQI
16th Jul 2025203 PMAQI
16th Jul 2025204 PMAQI
16th Jul 2025235 PMAQI
16th Jul 2025246 PMAQI
16th Jul 2025177 PMAQI
16th Jul 2025178 PMAQI
16th Jul 2025199 PMAQI
16th Jul 20252010 PMAQI
16th Jul 20252011 PMAQI
17th Jul 20252112 AMAQI
17th Jul 2025211 AMAQI
17th Jul 2025182 AMAQI
17th Jul 2025193 AMAQI
17th Jul 2025214 AMAQI
17th Jul 2025185 AMAQI
16°C11/22°C
17th Jul 2025176 AMAQI
17th Jul 2025197 AMAQI
17th Jul 2025188 AMAQI
17th Jul 2025189 AMAQI
17th Jul 20251810 AMAQI
17th Jul 20251611 AMAQI
17th Jul 20251712 PMAQI
17th Jul 2025161 PMAQI
17th Jul 2025162 PMAQI
17th Jul 2025173 PMAQI
17th Jul 2025184 PMAQI
17th Jul 2025205 PMAQI
17th Jul 2025196 PMAQI
17th Jul 2025187 PMAQI
17th Jul 2025198 PMAQI
17th Jul 2025189 PMAQI
17th Jul 20251810 PMAQI
17th Jul 20251911 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 2025156 AMAQI
18th Jul 2025157 AMAQI
18th Jul 2025148 AMAQI
18th Jul 2025149 AMAQI
18th Jul 20251410 AMAQI
18th Jul 20251311 AMAQI
18th Jul 20251412 PMAQI
18th Jul 2025151 PMAQI
18th Jul 2025162 PMAQI
18th Jul 2025183 PMAQI
18th Jul 2025184 PMAQI
18th Jul 2025185 PMAQI
18th Jul 2025176 PMAQI
18th Jul 2025157 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 2025173 AMAQI
19th Jul 2025174 AMAQI
19th Jul 2025175 AMAQI
19°C11/30°C
19th Jul 2025176 AMAQI
19th Jul 2025207 AMAQI
19th Jul 2025178 AMAQI
19th Jul 2025179 AMAQI
19th Jul 20251810 AMAQI
19th Jul 20251611 AMAQI
19th Jul 20251612 PMAQI
19th Jul 2025161 PMAQI
19th Jul 2025172 PMAQI
19th Jul 2025183 PMAQI
19th Jul 2025194 PMAQI
19th Jul 2025195 PMAQI
19th Jul 2025186 PMAQI
19th Jul 2025187 PMAQI
19th Jul 2025188 PMAQI
19th Jul 2025189 PMAQI
19th Jul 20251910 PMAQI
19th Jul 20251811 PMAQI
20th Jul 20251912 AMAQI
20th Jul 2025161 AMAQI
20th Jul 2025182 AMAQI
20th Jul 2025163 AMAQI
20th Jul 2025164 AMAQI
20th Jul 2025155 AMAQI
19°C9/30°C
20th Jul 2025156 AMAQI
20th Jul 2025167 AMAQI
20th Jul 2025168 AMAQI
20th Jul 2025159 AMAQI
20th Jul 20251510 AMAQI
20th Jul 20251411 AMAQI
20th Jul 20251412 PMAQI
20th Jul 2025111 PMAQI
20th Jul 2025142 PMAQI
20th Jul 2025153 PMAQI
20th Jul 2025194 PMAQI
20th Jul 2025185 PMAQI
20th Jul 2025206 PMAQI
20th Jul 2025217 PMAQI
20th Jul 2025188 PMAQI
20th Jul 2025249 PMAQI
20th Jul 20252410 PMAQI
20th Jul 20252611 PMAQI
21st Jul 20252812 AMAQI
21st Jul 2025281 AMAQI
21st Jul 2025272 AMAQI
21st Jul 2025243 AMAQI
21st Jul 2025264 AMAQI
21st Jul 2025185 AMAQI
20°C10/31°C
21st Jul 2025196 AMAQI
21st Jul 2025187 AMAQI
21st Jul 2025238 AMAQI
21st Jul 2025209 AMAQI
21st Jul 20252410 AMAQI
21st Jul 20252311 AMAQI
21st Jul 20252112 PMAQI
21st Jul 2025191 PMAQI
21st Jul 2025192 PMAQI
21st Jul 2025213 PMAQI
21st Jul 2025214 PMAQI
21st Jul 2025225 PMAQI
21st Jul 2025266 PMAQI
21st Jul 2025227 PMAQI
21st Jul 2025208 PMAQI
21st Jul 2025199 PMAQI
21st Jul 20251810 PMAQI
21st Jul 20252211 PMAQI
22nd Jul 20252012 AMAQI
22nd Jul 2025211 AMAQI
22nd Jul 2025242 AMAQI
22nd Jul 2025203 AMAQI
22nd Jul 2025134 AMAQI
22nd Jul 2025125 AMAQI
18°C11/28°C
22nd Jul 2025136 AMAQI
22nd Jul 2025147 AMAQI
22nd Jul 2025148 AMAQI
22nd Jul 2025169 AMAQI
22nd Jul 20251510 AMAQI
22nd Jul 20251611 AMAQI
22nd Jul 20251612 PMAQI
22nd Jul 2025141 PMAQI
22nd Jul 2025142 PMAQI
22nd Jul 2025173 PMAQI
22nd Jul 2025164 PMAQI
22nd Jul 2025165 PMAQI
22nd Jul 2025166 PMAQI
22nd Jul 2025217 PMAQI
22nd Jul 2025198 PMAQI
22nd Jul 2025179 PMAQI
22nd Jul 20251710 PMAQI
22nd Jul 20251611 PMAQI
23rd Jul 20251412 AMAQI
23rd Jul 2025181 AMAQI
23rd Jul 2025322 AMAQI
23rd Jul 2025243 AMAQI
23rd Jul 2025184 AMAQI
23rd Jul 2025205 AMAQI
16°C9/24°C
23rd Jul 2025136 AMAQI
23rd Jul 2025147 AMAQI
23rd Jul 2025178 AMAQI
23rd Jul 2025159 AMAQI
23rd Jul 20251510 AMAQI
23rd Jul 20251611 AMAQI
23rd Jul 20251812 PMAQI
23rd Jul 2025281 PMAQI
23rd Jul 2025222 PMAQI
23rd Jul 2025223 PMAQI
23rd Jul 2025204 PMAQI
23rd Jul 2025165 PMAQI
23rd Jul 2025156 PMAQI
23rd Jul 2025187 PMAQI
23rd Jul 2025168 PMAQI
23rd Jul 2025159 PMAQI
23rd Jul 20251610 PMAQI
23rd Jul 20251611 PMAQI
24th Jul 20251612 AMAQI
24th Jul 2025151 AMAQI
24th Jul 2025142 AMAQI
24th Jul 2025153 AMAQI
24th Jul 2025144 AMAQI
24th Jul 2025135 AMAQI
17°C11/24°C
24th Jul 2025126 AMAQI
24th Jul 2025147 AMAQI
24th Jul 2025148 AMAQI
24th Jul 2025149 AMAQI
24th Jul 20251310 AMAQI
24th Jul 20251411 AMAQI
24th Jul 20251612 PMAQI
24th Jul 2025161 PMAQI
24th Jul 2025162 PMAQI
24th Jul 2025163 PMAQI
24th Jul 2025164 PMAQI
24th Jul 2025145 PMAQI
24th Jul 2025166 PMAQI
24th Jul 2025157 PMAQI
24th Jul 2025168 PMAQI
24th Jul 2025169 PMAQI
24th Jul 20251710 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 2025159 AMAQI
25th Jul 20251410 AMAQI
25th Jul 20251411 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 2025176 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 2025163 AMAQI
26th Jul 2025144 AMAQI
26th Jul 2025145 AMAQI
17°C11/26°C
26th Jul 2025136 AMAQI
26th Jul 2025137 AMAQI
26th Jul 2025148 AMAQI
26th Jul 2025149 AMAQI
26th Jul 20251410 AMAQI
26th Jul 20251411 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 2025158 PMAQI
26th Jul 2025149 PMAQI
26th Jul 20251510 PMAQI
26th Jul 20251411 PMAQI
27th Jul 20251612 AMAQI
27th Jul 2025151 AMAQI
27th Jul 2025162 AMAQI
27th Jul 2025153 AMAQI
27th Jul 2025144 AMAQI
27th Jul 2025145 AMAQI
18°C11/25°C
27th Jul 2025146 AMAQI
27th Jul 2025167 AMAQI
27th Jul 2025158 AMAQI
27th Jul 2025149 AMAQI
27th Jul 20251510 AMAQI
27th Jul 20251411 AMAQI
27th Jul 20251412 PMAQI
27th Jul 2025151 PMAQI
27th Jul 2025142 PMAQI
27th Jul 2025163 PMAQI
27th Jul 2025154 PMAQI
27th Jul 2025165 PMAQI
27th Jul 2025166 PMAQI
27th Jul 2025157 PMAQI
27th Jul 2025148 PMAQI
27th Jul 2025169 PMAQI
27th Jul 20251610 PMAQI
27th Jul 20251711 PMAQI
28th Jul 20251712 AMAQI
28th Jul 2025161 AMAQI
28th Jul 2025162 AMAQI
28th Jul 2025163 AMAQI
28th Jul 2025164 AMAQI
28th Jul 2025155 AMAQI
19°C10/29°C
28th Jul 2025166 AMAQI
28th Jul 2025177 AMAQI
28th Jul 2025188 AMAQI
28th Jul 2025179 AMAQI
28th Jul 20251610 AMAQI
28th Jul 20251711 AMAQI
28th Jul 20251612 PMAQI
28th Jul 2025181 PMAQI
28th Jul 2025162 PMAQI
28th Jul 2025183 PMAQI
28th Jul 2025194 PMAQI
28th Jul 2025205 PMAQI
28th Jul 2025196 PMAQI
28th Jul 2025207 PMAQI
28th Jul 2025188 PMAQI
28th Jul 2025189 PMAQI
28th Jul 20251810 PMAQI
28th Jul 20251811 PMAQI
29th Jul 20252012 AMAQI
29th Jul 2025231 AMAQI
29th Jul 2025192 AMAQI
29th Jul 2025183 AMAQI
29th Jul 2025174 AMAQI
29th Jul 2025175 AMAQI
22°C11/33°C
29th Jul 2025176 AMAQI
29th Jul 2025177 AMAQI
29th Jul 2025188 AMAQI
29th Jul 2025289 AMAQI
29th Jul 20252810 AMAQI
29th Jul 20252211 AMAQI
29th Jul 20251912 PMAQI
29th Jul 2025211 PMAQI
29th Jul 2025222 PMAQI
29th Jul 2025233 PMAQI
29th Jul 2025244 PMAQI
29th Jul 2025235 PMAQI
29th Jul 2025226 PMAQI
29th Jul 2025197 PMAQI
29th Jul 2025208 PMAQI
29th Jul 2025219 PMAQI
29th Jul 20252310 PMAQI
29th Jul 20252411 PMAQI
30th Jul 20252412 AMAQI
30th Jul 2025221 AMAQI
30th Jul 2025222 AMAQI
30th Jul 2025223 AMAQI
30th Jul 2025224 AMAQI
30th Jul 2025205 AMAQI
23°C14/34°C
30th Jul 2025206 AMAQI
30th Jul 2025197 AMAQI
30th Jul 2025178 AMAQI
30th Jul 2025179 AMAQI
30th Jul 20251810 AMAQI
30th Jul 20251711 AMAQI
30th Jul 20251812 PMAQI
30th Jul 2025201 PMAQI
30th Jul 2025222 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 2025249 PMAQI
30th Jul 20252510 PMAQI
30th Jul 20252511 PMAQI
31st Jul 20252512 AMAQI
31st Jul 2025231 AMAQI
31st Jul 2025212 AMAQI
31st Jul 2025193 AMAQI
31st Jul 2025174 AMAQI
31st Jul 2025145 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 20251811 AMAQI
31st Jul 20252012 PMAQI
31st Jul 2025191 PMAQI
31st Jul 2025222 PMAQI
31st Jul 2025263 PMAQI
31st Jul 2025264 PMAQI
31st Jul 2025275 PMAQI
31st Jul 2025296 PMAQI
31st Jul 2025217 PMAQI
31st Jul 2025248 PMAQI
31st Jul 2025249 PMAQI
31st Jul 20252610 PMAQI
31st Jul 20252711 PMAQI
1st Aug 20252712 AMAQI
1st Aug 2025231 AMAQI
1st Aug 2025182 AMAQI
1st Aug 2025193 AMAQI
1st Aug 2025194 AMAQI
1st Aug 2025205 AMAQI
22°C12/33°C
1st Aug 2025176 AMAQI
1st Aug 2025157 AMAQI
1st Aug 2025188 AMAQI
1st Aug 2025179 AMAQI
1st Aug 20251510 AMAQI
1st Aug 20251811 AMAQI
1st Aug 20252012 PMAQI
1st Aug 2025211 PMAQI
1st Aug 2025222 PMAQI
1st Aug 2025243 PMAQI
1st Aug 2025264 PMAQI
1st Aug 2025285 PMAQI
1st Aug 2025286 PMAQI
1st Aug 2025207 PMAQI
1st Aug 2025228 PMAQI
1st Aug 2025249 PMAQI
1st Aug 20252410 PMAQI
1st Aug 20252611 PMAQI
2nd Aug 20252312 AMAQI
2nd Aug 2025201 AMAQI
2nd Aug 2025192 AMAQI
2nd Aug 2025223 AMAQI
2nd Aug 2025214 AMAQI
2nd Aug 2025195 AMAQI
23°C13/33°C
2nd Aug 2025166 AMAQI
2nd Aug 2025187 AMAQI
2nd Aug 2025188 AMAQI
2nd Aug 2025189 AMAQI
2nd Aug 20251610 AMAQI
2nd Aug 20251811 AMAQI
2nd Aug 20251812 PMAQI
2nd Aug 2025161 PMAQI
2nd Aug 2025162 PMAQI
2nd Aug 2025193 PMAQI
2nd Aug 2025244 PMAQI
2nd Aug 2025225 PMAQI
2nd Aug 2025306 PMAQI
2nd Aug 2025237 PMAQI
2nd Aug 2025208 PMAQI
2nd Aug 2025189 PMAQI
2nd Aug 20252110 PMAQI
2nd Aug 20252211 PMAQI
3rd Aug 20252412 AMAQI
3rd Aug 2025261 AMAQI
3rd Aug 2025252 AMAQI
3rd Aug 2025263 AMAQI
3rd Aug 2025234 AMAQI
3rd Aug 2025205 AMAQI
24°C14/35°C
3rd Aug 2025216 AMAQI
3rd Aug 2025207 AMAQI
3rd Aug 2025208 AMAQI
3rd Aug 2025189 AMAQI
3rd Aug 20252010 AMAQI
3rd Aug 20252111 AMAQI
3rd Aug 20252212 PMAQI
3rd Aug 2025261 PMAQI
3rd Aug 2025392 PMAQI
3rd Aug 2025403 PMAQI
3rd Aug 2025394 PMAQI
3rd Aug 2025375 PMAQI
3rd Aug 2025366 PMAQI
3rd Aug 2025267 PMAQI
3rd Aug 2025318 PMAQI
3rd Aug 2025369 PMAQI
3rd Aug 20253510 PMAQI
3rd Aug 20254011 PMAQI
4th Aug 20253712 AMAQI
4th Aug 2025291 AMAQI
4th Aug 2025322 AMAQI
4th Aug 2025343 AMAQI
4th Aug 2025304 AMAQI
4th Aug 2025245 AMAQI
23°C14/34°C
4th Aug 2025266 AMAQI
4th Aug 2025307 AMAQI
4th Aug 2025298 AMAQI
4th Aug 2025299 AMAQI
4th Aug 20252810 AMAQI
4th Aug 20253111 AMAQI
4th Aug 20253212 PMAQI
4th Aug 2025291 PMAQI
4th Aug 2025272 PMAQI
4th Aug 2025273 PMAQI
4th Aug 2025364 PMAQI
4th Aug 2025325 PMAQI
4th Aug 2025276 PMAQI
4th Aug 2025307 PMAQI
4th Aug 2025298 PMAQI
4th Aug 2025269 PMAQI
4th Aug 20252610 PMAQI
4th Aug 20252511 PMAQI
5th Aug 20252612 AMAQI
5th Aug 2025251 AMAQI
5th Aug 2025262 AMAQI
5th Aug 2025273 AMAQI
5th Aug 2025284 AMAQI
5th Aug 2025245 AMAQI
22°C13/34°C
5th Aug 2025236 AMAQI
5th Aug 2025267 AMAQI
5th Aug 2025268 AMAQI
5th Aug 2025249 AMAQI
5th Aug 20253010 AMAQI
5th Aug 20252711 AMAQI
5th Aug 20252412 PMAQI
5th Aug 2025281 PMAQI
5th Aug 2025282 PMAQI
5th Aug 2025293 PMAQI
5th Aug 2025264 PMAQI
5th Aug 2025275 PMAQI
5th Aug 2025286 PMAQI
5th Aug 2025267 PMAQI
5th Aug 2025248 PMAQI
5th Aug 2025259 PMAQI
5th Aug 20252810 PMAQI
5th Aug 20252811 PMAQI
6th Aug 20252712 AMAQI
6th Aug 2025301 AMAQI
6th Aug 2025312 AMAQI
6th Aug 2025333 AMAQI
6th Aug 2025334 AMAQI
6th Aug 2025305 AMAQI
22°C13/32°C
6th Aug 2025296 AMAQI
6th Aug 2025337 AMAQI
6th Aug 2025328 AMAQI
6th Aug 2025299 AMAQI
6th Aug 20253010 AMAQI
6th Aug 20253011 AMAQI
6th Aug 20252912 PMAQI
6th Aug 2025401 PMAQI
6th Aug 2025412 PMAQI
6th Aug 2025413 PMAQI
6th Aug 2025364 PMAQI
6th Aug 2025335 PMAQI
6th Aug 2025336 PMAQI
6th Aug 2025287 PMAQI
6th Aug 2025318 PMAQI
6th Aug 2025309 PMAQI
6th Aug 20252910 PMAQI
6th Aug 20252511 PMAQI
7th Aug 20253012 AMAQI
7th Aug 2025261 AMAQI
7th Aug 2025282 AMAQI
7th Aug 2025323 AMAQI
7th Aug 2025344 AMAQI
7th Aug 2025225 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 20252211 AMAQI
7th Aug 20252612 PMAQI
7th Aug 2025281 PMAQI
7th Aug 2025242 PMAQI
7th Aug 2025243 PMAQI
7th Aug 2025224 PMAQI
7th Aug 2025225 PMAQI
7th Aug 2025216 PMAQI
7th Aug 2025227 PMAQI
7th Aug 2025218 PMAQI
7th Aug 2025219 PMAQI
7th Aug 20252110 PMAQI
7th Aug 20252311 PMAQI
8th Aug 20252812 AMAQI
8th Aug 2025301 AMAQI
8th Aug 2025332 AMAQI
8th Aug 2025333 AMAQI
8th Aug 2025344 AMAQI
8th Aug 2025305 AMAQI
26°C15/36°C
8th Aug 2025296 AMAQI
6 AM8th Aug 2025317 AMAQI
8th Aug 2025338 AMAQI
1 PM
8 PM
1 AM
5 AM
--°C/°C
Day time
Avg. Highest Time
6 AM - 6 PM
20AQI
13 hours / Day
390 hours / Month
Avg. Lowest Time
6 AM
19AQI
1 hours / Day
30 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 6 AM to 6 PM (Avg. 20), while the lowest AQI was between 6 AM to 6 AM (Avg. 19).
Night time
Avg. Highest Time
12 AM - 4 AM
22AQI
5 hours / Day
150 hours / Month
Avg. Lowest Time
5 AM
19AQI
1 hours / Day
30 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 12 AM to 4 AM (Avg. 22), while the lowest AQI was between 5 AM to 5 AM (Avg. 19).
2025 Days Vs Air Quality
Guerneville, Windsor, California, United States
2025
99%
216
1%
3
Total number of days with different AQI categories in last 220 days in 2025 (145 days remaining)
Good
216 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 220 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
Guerneville, Windsor, 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
42AQI
42AQI
2nd January 2025
36AQI
36AQI
3rd January 2025
41AQI
41AQI
4th January 2025
26AQI
26AQI
5th January 2025
33AQI
33AQI
6th January 2025
23AQI
23AQI
7th January 2025
23AQI
23AQI
8th January 2025
26AQI
26AQI
9th January 2025
38AQI
38AQI
10th January 2025
40AQI
40AQI
11th January 2025
30AQI
30AQI
12th January 2025
24AQI
24AQI
13th January 2025
29AQI
29AQI
14th January 2025
32AQI
32AQI
15th January 2025
46AQI
46AQI
16th January 2025
47AQI
47AQI
17th January 2025
44AQI
44AQI
18th January 2025
43AQI
43AQI
19th January 2025
50AQI
50AQI
20th January 2025
35AQI
35AQI
21st January 2025
42AQI
42AQI
22nd January 2025
48AQI
48AQI
23rd January 2025
51AQI
51AQI
24th January 2025
49AQI
49AQI
25th January 2025
38AQI
38AQI
26th January 2025
39AQI
39AQI
27th January 2025
41AQI
41AQI
28th January 2025
52AQI
52AQI
29th January 2025
46AQI
46AQI
30th January 2025
51AQI
51AQI
31st January 2025
43AQI
43AQI
1st February 2025
28AQI
28AQI
2nd February 2025
20AQI
20AQI
3rd February 2025
20AQI
20AQI
4th February 2025
21AQI
21AQI
5th February 2025
22AQI
22AQI
6th February 2025
27AQI
27AQI
7th February 2025
22AQI
22AQI
8th February 2025
25AQI
25AQI
9th February 2025
28AQI
28AQI
10th February 2025
34AQI
34AQI
11th February 2025
32AQI
32AQI
12th February 2025
33AQI
33AQI
13th February 2025
27AQI
27AQI
14th February 2025
25AQI
25AQI
15th February 2025
21AQI
21AQI
16th February 2025
26AQI
26AQI
17th February 2025
20AQI
20AQI
18th February 2025
24AQI
24AQI
19th February 2025
22AQI
22AQI
20th February 2025
22AQI
22AQI
21st February 2025
25AQI
25AQI
22nd February 2025
26AQI
26AQI
23rd February 2025
21AQI
21AQI
24th February 2025
19AQI
19AQI
25th February 2025
21AQI
21AQI
26th February 2025
28AQI
28AQI
27th February 2025
31AQI
31AQI
28th February 2025
34AQI
34AQI
1st March 2025
30AQI
30AQI
2nd March 2025
20AQI
20AQI
3rd March 2025
19AQI
19AQI
4th March 2025
20AQI
20AQI
5th March 2025
22AQI
22AQI
6th March 2025
21AQI
21AQI
7th March 2025
25AQI
25AQI
8th March 2025
32AQI
32AQI
9th March 2025
32AQI
32AQI
10th March 2025
27AQI
27AQI
11th March 2025
26AQI
26AQI
12th March 2025
20AQI
20AQI
13th March 2025
19AQI
19AQI
14th March 2025
17AQI
17AQI
15th March 2025
21AQI
21AQI
16th March 2025
18AQI
18AQI
17th March 2025
16AQI
16AQI
18th March 2025
18AQI
18AQI
19th March 2025
19AQI
19AQI
20th March 2025
16AQI
16AQI
21st March 2025
23AQI
23AQI
22nd March 2025
18AQI
18AQI
23rd March 2025
20AQI
20AQI
24th March 2025
20AQI
20AQI
25th March 2025
23AQI
23AQI
26th March 2025
28AQI
28AQI
27th March 2025
20AQI
20AQI
28th March 2025
23AQI
23AQI
29th March 2025
20AQI
20AQI
30th March 2025
22AQI
22AQI
31st March 2025
21AQI
21AQI
1st April 2025
23AQI
23AQI
2nd April 2025
17AQI
17AQI
3rd April 2025
21AQI
21AQI
4th April 2025
21AQI
21AQI
5th April 2025
24AQI
24AQI
6th April 2025
18AQI
18AQI
7th April 2025
14AQI
14AQI
8th April 2025
13AQI
13AQI
9th April 2025
17AQI
17AQI
10th April 2025
17AQI
17AQI
11th April 2025
18AQI
18AQI
12th April 2025
20AQI
20AQI
13th April 2025
22AQI
22AQI
14th April 2025
21AQI
21AQI
15th April 2025
26AQI
26AQI
16th April 2025
25AQI
25AQI
17th April 2025
18AQI
18AQI
18th April 2025
22AQI
22AQI
19th April 2025
25AQI
25AQI
20th April 2025
18AQI
18AQI
21st April 2025
20AQI
20AQI
22nd April 2025
32AQI
32AQI
23rd April 2025
34AQI
34AQI
24th April 2025
28AQI
28AQI
25th April 2025
18AQI
18AQI
26th April 2025
18AQI
18AQI
27th April 2025
15AQI
15AQI
28th April 2025
20AQI
20AQI
29th April 2025
27AQI
27AQI
30th April 2025
28AQI
28AQI
1st May 2025
33AQI
33AQI
2nd May 2025
24AQI
24AQI
3rd May 2025
16AQI
16AQI
4th May 2025
19AQI
19AQI
5th May 2025
23AQI
23AQI
6th May 2025
30AQI
30AQI
7th May 2025
35AQI
35AQI
8th May 2025
22AQI
22AQI
9th May 2025
28AQI
28AQI
10th May 2025
20AQI
20AQI
11th May 2025
17AQI
17AQI
12th May 2025
15AQI
15AQI
13th May 2025
15AQI
15AQI
14th May 2025
20AQI
20AQI
15th May 2025
24AQI
24AQI
16th May 2025
28AQI
28AQI
17th May 2025
23AQI
23AQI
18th May 2025
19AQI
19AQI
19th May 2025
16AQI
16AQI
20th May 2025
15AQI
15AQI
21st May 2025
29AQI
29AQI
22nd May 2025
21AQI
21AQI
23rd May 2025
18AQI
18AQI
24th May 2025
26AQI
26AQI
25th May 2025
18AQI
18AQI
26th May 2025
15AQI
15AQI
27th May 2025
20AQI
20AQI
28th May 2025
21AQI
21AQI
29th May 2025
18AQI
18AQI
30th May 2025
20AQI
20AQI
31st May 2025
33AQI
33AQI
1st June 2025
43AQI
43AQI
2nd June 2025
47AQI
47AQI
3rd June 2025
33AQI
33AQI
4th June 2025
28AQI
28AQI
5th June 2025
21AQI
21AQI
6th June 2025
17AQI
17AQI
7th June 2025
17AQI
17AQI
8th June 2025
16AQI
16AQI
9th June 2025
17AQI
17AQI
10th June 2025
20AQI
20AQI
11th June 2025
26AQI
26AQI
12th June 2025
36AQI
36AQI
13th June 2025
37AQI
37AQI
14th June 2025
35AQI
35AQI
15th June 2025
35AQI
35AQI
16th June 2025
26AQI
26AQI
17th June 2025
24AQI
24AQI
18th June 2025
23AQI
23AQI
19th June 2025
29AQI
29AQI
20th June 2025
29AQI
29AQI
21st June 2025
23AQI
23AQI
22nd June 2025
20AQI
20AQI
23rd June 2025
23AQI
23AQI
24th June 2025
22AQI
22AQI
25th June 2025
20AQI
20AQI
26th June 2025
19AQI
19AQI
27th June 2025
22AQI
22AQI
28th June 2025
24AQI
24AQI
29th June 2025
23AQI
23AQI
30th June 2025
20AQI
20AQI
1st July 2025
20AQI
20AQI
2nd July 2025
18AQI
18AQI
3rd July 2025
24AQI
24AQI
4th July 2025
24AQI
24AQI
5th July 2025
29AQI
29AQI
6th July 2025
27AQI
27AQI
7th July 2025
19AQI
19AQI
8th July 2025
18AQI
18AQI
9th July 2025
17AQI
17AQI
10th July 2025
20AQI
20AQI
11th July 2025
31AQI
31AQI
12th July 2025
30AQI
30AQI
13th July 2025
22AQI
22AQI
14th July 2025
18AQI
18AQI
15th July 2025
18AQI
18AQI
16th July 2025
20AQI
20AQI
17th July 2025
19AQI
19AQI
18th July 2025
16AQI
16AQI
19th July 2025
18AQI
18AQI
20th July 2025
18AQI
18AQI
21st July 2025
22AQI
22AQI
22nd July 2025
17AQI
17AQI
23rd July 2025
18AQI
18AQI
24th July 2025
15AQI
15AQI
25th July 2025
15AQI
15AQI
26th July 2025
15AQI
15AQI
27th July 2025
15AQI
15AQI
28th July 2025
17AQI
17AQI
29th July 2025
21AQI
21AQI
30th July 2025
22AQI
22AQI
31st July 2025
22AQI
22AQI
1st August 2025
22AQI
22AQI
2nd August 2025
20AQI
20AQI
3rd August 2025
28AQI
28AQI
4th August 2025
29AQI
29AQI
5th August 2025
26AQI
26AQI
6th August 2025
31AQI
31AQI
7th August 2025
25AQI
25AQI
39AQI
25AQI
22AQI
21AQI
22AQI
26AQI
20AQI
26AQI
No. of days
Jan.Feb.Mar.Apr.MayJun.Jul.Aug.Sep.Oct.Nov.Dec.Total Days
202525AQI
28
3
28
31
30
31
30
31
7
216
3
Highest AQI recorded in
January39AQI
Lowest AQI recorded in
July20AQI
202431AQI
15
1
1
1
12
29
31
31
27
1
28
3
26
4
23
8
224
17
Highest AQI recorded in
April42AQI
Lowest AQI recorded in
March17AQI
202335AQI
2
1
27
4
29
5
Highest AQI recorded in
November52AQI
Lowest AQI recorded in
December33AQI
202078AQI
11
10
1
4
1
1
1
1
11
12
2
4
1
Highest AQI recorded in
October104AQI
Lowest AQI recorded in
November55AQI
Most & Least Polluted Years Over the Last 4 Years
Most Polluted Year Recorded
2020(Avg.)
78AQILeast Polluted Year Recorded
2025(Avg.)
25AQIGuerneville's annual 2025 AQI (25) shows an average percentage change of -38.3% (improved AQI) compared to previous years: 2020 (78), 2023 (35), 2024 (31).
