Ukiah Library, Ukiah, 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
Ukiah Library, Ukiah, California, United States
2021
2022
2023
2024
2025
AQI
.
Days
AQI Trends: Highest and Lowest
Highest AQI recorded on
19th Aug 2021
150AQILowest AQI recorded on
17th Aug 2024
12AQISame Day Analysis (10th August ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 4th highest AQI at 25 of Good air quality, showing improvement over 2024, 2023 and 2021 on the same day.
Download 2024 Annual Data
World Air Quality Report
Day & Night AQI Trend: 10th Aug - 11th Aug 2025
Ukiah Library, Ukiah, California, United States
AQI
Day
Night
.
6 AM10th Aug 2025
8 PM
5 AM11th Aug 2025
Day time
Avg. Highest Time
12PM10th Aug
27AQI
Avg. Lowest Time
8AM10th Aug
22AQI
Night time
Avg. Highest Time
2AM11th Aug
35AQI
Avg. Lowest Time
11PM10th Aug
26AQI
In the last 24 hours,
Ukiah Library's AQI reached its highest point of 35 at 2 AM during the Night, while the lowest point, 22, was recorded at 8 AM during the Day between 10th Aug and 11th Aug 2025.
Day & Night AQI Trend : Jul - Aug 2025
Ukiah Library, Ukiah, 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 2025486 AMAQI
12th Jul 2025477 AMAQI
12th Jul 2025478 AMAQI
12th Jul 2025449 AMAQI
12th Jul 20255110 AMAQI
12th Jul 20254611 AMAQI
12th Jul 20254612 PMAQI
12th Jul 2025501 PMAQI
12th Jul 2025482 PMAQI
12th Jul 2025503 PMAQI
12th Jul 2025454 PMAQI
12th Jul 2025465 PMAQI
12th Jul 2025476 PMAQI
12th Jul 2025507 PMAQI
12th Jul 2025518 PMAQI
12th Jul 2025489 PMAQI
12th Jul 20254710 PMAQI
12th Jul 20254811 PMAQI
13th Jul 20254612 AMAQI
13th Jul 2025431 AMAQI
13th Jul 2025422 AMAQI
13th Jul 2025443 AMAQI
13th Jul 2025304 AMAQI
13th Jul 2025265 AMAQI
--°C/°C
13th Jul 2025246 AMAQI
13th Jul 2025287 AMAQI
13th Jul 2025328 AMAQI
13th Jul 2025349 AMAQI
13th Jul 20253110 AMAQI
13th Jul 20252811 AMAQI
13th Jul 20253412 PMAQI
13th Jul 2025361 PMAQI
13th Jul 2025342 PMAQI
13th Jul 2025373 PMAQI
13th Jul 2025394 PMAQI
13th Jul 2025425 PMAQI
13th Jul 2025396 PMAQI
13th Jul 2025397 PMAQI
13th Jul 2025388 PMAQI
13th Jul 2025409 PMAQI
13th Jul 20253810 PMAQI
13th Jul 20253911 PMAQI
14th Jul 20253512 AMAQI
14th Jul 2025361 AMAQI
14th Jul 2025382 AMAQI
14th Jul 2025403 AMAQI
14th Jul 2025364 AMAQI
14th Jul 2025345 AMAQI
23°C13/36°C
14th Jul 2025326 AMAQI
14th Jul 2025327 AMAQI
14th Jul 2025308 AMAQI
14th Jul 2025249 AMAQI
14th Jul 20252610 AMAQI
14th Jul 20252311 AMAQI
14th Jul 20252312 PMAQI
14th Jul 2025301 PMAQI
14th Jul 2025272 PMAQI
14th Jul 2025343 PMAQI
14th Jul 2025364 PMAQI
14th Jul 2025385 PMAQI
14th Jul 2025346 PMAQI
14th Jul 2025367 PMAQI
14th Jul 2025378 PMAQI
14th Jul 2025369 PMAQI
14th Jul 20253710 PMAQI
14th Jul 20254111 PMAQI
15th Jul 20253712 AMAQI
15th Jul 2025351 AMAQI
15th Jul 2025342 AMAQI
15th Jul 2025343 AMAQI
15th Jul 2025224 AMAQI
15th Jul 2025205 AMAQI
24°C13/36°C
15th Jul 2025216 AMAQI
15th Jul 2025247 AMAQI
15th Jul 2025248 AMAQI
15th Jul 2025249 AMAQI
15th Jul 20252410 AMAQI
15th Jul 20252211 AMAQI
15th Jul 20252212 PMAQI
15th Jul 2025261 PMAQI
15th Jul 2025282 PMAQI
15th Jul 2025323 PMAQI
15th Jul 2025344 PMAQI
15th Jul 2025345 PMAQI
15th Jul 2025336 PMAQI
15th Jul 2025317 PMAQI
15th Jul 2025348 PMAQI
15th Jul 2025329 PMAQI
15th Jul 20253210 PMAQI
15th Jul 20253211 PMAQI
16th Jul 20253012 AMAQI
16th Jul 2025311 AMAQI
16th Jul 2025302 AMAQI
16th Jul 2025303 AMAQI
16th Jul 2025244 AMAQI
16th Jul 2025275 AMAQI
22°C13/33°C
16th Jul 2025336 AMAQI
16th Jul 2025337 AMAQI
16th Jul 2025338 AMAQI
16th Jul 2025309 AMAQI
16th Jul 20253310 AMAQI
16th Jul 20253111 AMAQI
16th Jul 20253212 PMAQI
16th Jul 2025381 PMAQI
16th Jul 2025342 PMAQI
16th Jul 2025343 PMAQI
16th Jul 2025324 PMAQI
16th Jul 2025325 PMAQI
16th Jul 2025336 PMAQI
16th Jul 2025327 PMAQI
16th Jul 2025348 PMAQI
16th Jul 2025319 PMAQI
16th Jul 20253210 PMAQI
16th Jul 20253111 PMAQI
17th Jul 20253212 AMAQI
17th Jul 2025311 AMAQI
17th Jul 2025312 AMAQI
17th Jul 2025323 AMAQI
17th Jul 2025304 AMAQI
17th Jul 2025185 AMAQI
19°C9/31°C
17th Jul 2025206 AMAQI
17th Jul 2025247 AMAQI
17th Jul 2025218 AMAQI
17th Jul 2025219 AMAQI
17th Jul 20252510 AMAQI
17th Jul 20252311 AMAQI
17th Jul 20252812 PMAQI
17th Jul 2025251 PMAQI
17th Jul 2025262 PMAQI
17th Jul 2025293 PMAQI
17th Jul 2025284 PMAQI
17th Jul 2025285 PMAQI
17th Jul 2025286 PMAQI
17th Jul 2025267 PMAQI
17th Jul 2025268 PMAQI
17th Jul 2025249 PMAQI
17th Jul 20252810 PMAQI
17th Jul 20252711 PMAQI
18th Jul 20252712 AMAQI
18th Jul 2025261 AMAQI
18th Jul 2025262 AMAQI
18th Jul 2025273 AMAQI
18th Jul 2025174 AMAQI
18th Jul 2025225 AMAQI
20°C11/33°C
18th Jul 2025236 AMAQI
18th Jul 2025207 AMAQI
18th Jul 2025198 AMAQI
18th Jul 2025189 AMAQI
18th Jul 20251810 AMAQI
18th Jul 20252111 AMAQI
18th Jul 20252212 PMAQI
18th Jul 2025281 PMAQI
18th Jul 2025262 PMAQI
18th Jul 2025263 PMAQI
18th Jul 2025284 PMAQI
18th Jul 2025275 PMAQI
18th Jul 2025286 PMAQI
18th Jul 2025247 PMAQI
18th Jul 2025248 PMAQI
18th Jul 2025289 PMAQI
18th Jul 20252610 PMAQI
18th Jul 20252611 PMAQI
19th Jul 20252812 AMAQI
19th Jul 2025271 AMAQI
19th Jul 2025262 AMAQI
19th Jul 2025273 AMAQI
19th Jul 2025264 AMAQI
19th Jul 2025345 AMAQI
20°C8/32°C
19th Jul 2025326 AMAQI
19th Jul 2025287 AMAQI
19th Jul 2025238 AMAQI
19th Jul 2025219 AMAQI
19th Jul 20252110 AMAQI
19th Jul 20252011 AMAQI
19th Jul 20252412 PMAQI
19th Jul 2025241 PMAQI
19th Jul 2025242 PMAQI
19th Jul 2025283 PMAQI
19th Jul 2025304 PMAQI
19th Jul 2025315 PMAQI
19th Jul 2025306 PMAQI
19th Jul 2025297 PMAQI
19th Jul 2025288 PMAQI
19th Jul 2025289 PMAQI
19th Jul 20252710 PMAQI
19th Jul 20253011 PMAQI
20th Jul 20252712 AMAQI
20th Jul 2025261 AMAQI
20th Jul 2025262 AMAQI
20th Jul 2025263 AMAQI
20th Jul 2025204 AMAQI
20th Jul 2025165 AMAQI
20°C9/34°C
20th Jul 2025186 AMAQI
20th Jul 2025187 AMAQI
20th Jul 2025228 AMAQI
20th Jul 2025259 AMAQI
20th Jul 20252410 AMAQI
20th Jul 20252311 AMAQI
20th Jul 20252112 PMAQI
20th Jul 2025221 PMAQI
20th Jul 2025242 PMAQI
20th Jul 2025273 PMAQI
20th Jul 2025284 PMAQI
20th Jul 2025285 PMAQI
20th Jul 2025286 PMAQI
20th Jul 2025247 PMAQI
20th Jul 2025248 PMAQI
20th Jul 2025269 PMAQI
20th Jul 20252710 PMAQI
20th Jul 20252611 PMAQI
21st Jul 20252312 AMAQI
21st Jul 2025251 AMAQI
21st Jul 2025282 AMAQI
21st Jul 2025273 AMAQI
21st Jul 2025304 AMAQI
21st Jul 2025305 AMAQI
20°C10/32°C
21st Jul 2025276 AMAQI
21st Jul 2025237 AMAQI
21st Jul 2025248 AMAQI
21st Jul 2025229 AMAQI
21st Jul 20252610 AMAQI
21st Jul 20252611 AMAQI
21st Jul 20252312 PMAQI
21st Jul 2025261 PMAQI
21st Jul 2025252 PMAQI
21st Jul 2025273 PMAQI
21st Jul 2025284 PMAQI
21st Jul 2025285 PMAQI
21st Jul 2025326 PMAQI
21st Jul 2025287 PMAQI
21st Jul 2025278 PMAQI
21st Jul 2025259 PMAQI
21st Jul 20252610 PMAQI
21st Jul 20252711 PMAQI
22nd Jul 20252612 AMAQI
22nd Jul 2025251 AMAQI
22nd Jul 2025282 AMAQI
22nd Jul 2025253 AMAQI
22nd Jul 2025204 AMAQI
22nd Jul 2025185 AMAQI
16°C11/23°C
22nd Jul 2025146 AMAQI
22nd Jul 2025157 AMAQI
22nd Jul 2025198 AMAQI
22nd Jul 2025219 AMAQI
22nd Jul 20252110 AMAQI
22nd Jul 20252011 AMAQI
22nd Jul 20251912 PMAQI
22nd Jul 2025241 PMAQI
22nd Jul 2025242 PMAQI
22nd Jul 2025223 PMAQI
22nd Jul 2025234 PMAQI
22nd Jul 2025235 PMAQI
22nd Jul 2025246 PMAQI
22nd Jul 2025257 PMAQI
22nd Jul 2025228 PMAQI
22nd Jul 2025209 PMAQI
22nd Jul 20251910 PMAQI
22nd Jul 20252111 PMAQI
23rd Jul 20252412 AMAQI
23rd Jul 2025251 AMAQI
23rd Jul 2025332 AMAQI
23rd Jul 2025303 AMAQI
23rd Jul 2025224 AMAQI
23rd Jul 2025235 AMAQI
18°C12/26°C
23rd Jul 2025186 AMAQI
23rd Jul 2025177 AMAQI
23rd Jul 2025158 AMAQI
23rd Jul 2025169 AMAQI
23rd Jul 20251710 AMAQI
23rd Jul 20251711 AMAQI
23rd Jul 20252212 PMAQI
23rd Jul 2025381 PMAQI
23rd Jul 2025312 PMAQI
23rd Jul 2025303 PMAQI
23rd Jul 2025304 PMAQI
23rd Jul 2025235 PMAQI
23rd Jul 2025236 PMAQI
23rd Jul 2025227 PMAQI
23rd Jul 2025228 PMAQI
23rd Jul 2025219 PMAQI
23rd Jul 20252410 PMAQI
23rd Jul 20252211 PMAQI
24th Jul 20252012 AMAQI
24th Jul 2025221 AMAQI
24th Jul 2025242 AMAQI
24th Jul 2025223 AMAQI
24th Jul 2025214 AMAQI
24th Jul 2025175 AMAQI
18°C8/30°C
24th Jul 2025166 AMAQI
24th Jul 2025167 AMAQI
24th Jul 2025158 AMAQI
24th Jul 2025169 AMAQI
24th Jul 20251410 AMAQI
24th Jul 20251611 AMAQI
24th Jul 20252112 PMAQI
24th Jul 2025251 PMAQI
24th Jul 2025222 PMAQI
24th Jul 2025223 PMAQI
24th Jul 2025214 PMAQI
24th Jul 2025215 PMAQI
24th Jul 2025206 PMAQI
24th Jul 2025217 PMAQI
24th Jul 2025198 PMAQI
24th Jul 2025179 PMAQI
24th Jul 20251910 PMAQI
24th Jul 20251811 PMAQI
25th Jul 20251912 AMAQI
25th Jul 2025191 AMAQI
25th Jul 2025182 AMAQI
25th Jul 2025193 AMAQI
25th Jul 2025164 AMAQI
25th Jul 2025155 AMAQI
18°C10/29°C
25th Jul 2025146 AMAQI
25th Jul 2025157 AMAQI
25th Jul 2025168 AMAQI
25th Jul 2025169 AMAQI
25th Jul 20252010 AMAQI
25th Jul 20251811 AMAQI
25th Jul 20252012 PMAQI
25th Jul 2025231 PMAQI
25th Jul 2025202 PMAQI
25th Jul 2025183 PMAQI
25th Jul 2025184 PMAQI
25th Jul 2025195 PMAQI
25th Jul 2025186 PMAQI
25th Jul 2025197 PMAQI
25th Jul 2025198 PMAQI
25th Jul 2025199 PMAQI
25th Jul 20251710 PMAQI
25th Jul 20251811 PMAQI
26th Jul 20251912 AMAQI
26th Jul 2025171 AMAQI
26th Jul 2025182 AMAQI
26th Jul 2025183 AMAQI
26th Jul 2025134 AMAQI
26th Jul 2025145 AMAQI
18°C10/29°C
26th Jul 2025126 AMAQI
26th Jul 2025137 AMAQI
26th Jul 2025168 AMAQI
26th Jul 2025149 AMAQI
26th Jul 20251510 AMAQI
26th Jul 20251411 AMAQI
26th Jul 20251612 PMAQI
26th Jul 2025171 PMAQI
26th Jul 2025182 PMAQI
26th Jul 2025183 PMAQI
26th Jul 2025194 PMAQI
26th Jul 2025245 PMAQI
26th Jul 2025246 PMAQI
26th Jul 2025207 PMAQI
26th Jul 2025178 PMAQI
26th Jul 2025189 PMAQI
26th Jul 20251710 PMAQI
26th Jul 20251811 PMAQI
27th Jul 20251812 AMAQI
27th Jul 2025171 AMAQI
27th Jul 2025182 AMAQI
27th Jul 2025173 AMAQI
27th Jul 2025164 AMAQI
27th Jul 2025165 AMAQI
19°C11/30°C
27th Jul 2025156 AMAQI
27th Jul 2025167 AMAQI
27th Jul 2025168 AMAQI
27th Jul 2025169 AMAQI
27th Jul 20251710 AMAQI
27th Jul 20251911 AMAQI
27th Jul 20251812 PMAQI
27th Jul 2025181 PMAQI
27th Jul 2025152 PMAQI
27th Jul 2025163 PMAQI
27th Jul 2025174 PMAQI
27th Jul 2025175 PMAQI
27th Jul 2025186 PMAQI
27th Jul 2025187 PMAQI
27th Jul 2025178 PMAQI
27th Jul 2025179 PMAQI
27th Jul 20251610 PMAQI
27th Jul 20251711 PMAQI
28th Jul 20251612 AMAQI
28th Jul 2025171 AMAQI
28th Jul 2025172 AMAQI
28th Jul 2025183 AMAQI
28th Jul 2025164 AMAQI
28th Jul 2025145 AMAQI
19°C10/31°C
28th Jul 2025166 AMAQI
28th Jul 2025177 AMAQI
28th Jul 2025178 AMAQI
28th Jul 2025179 AMAQI
28th Jul 20251610 AMAQI
28th Jul 20251711 AMAQI
28th Jul 20251712 PMAQI
28th Jul 2025191 PMAQI
28th Jul 2025182 PMAQI
28th Jul 2025203 PMAQI
28th Jul 2025204 PMAQI
28th Jul 2025255 PMAQI
28th Jul 2025206 PMAQI
28th Jul 2025207 PMAQI
28th Jul 2025238 PMAQI
28th Jul 2025239 PMAQI
28th Jul 20252210 PMAQI
28th Jul 20252211 PMAQI
29th Jul 20252212 AMAQI
29th Jul 2025221 AMAQI
29th Jul 2025192 AMAQI
29th Jul 2025183 AMAQI
29th Jul 2025184 AMAQI
29th Jul 2025205 AMAQI
21°C9/34°C
29th Jul 2025206 AMAQI
29th Jul 2025187 AMAQI
29th Jul 2025188 AMAQI
29th Jul 2025179 AMAQI
29th Jul 20251910 AMAQI
29th Jul 20251911 AMAQI
29th Jul 20252112 PMAQI
29th Jul 2025221 PMAQI
29th Jul 2025232 PMAQI
29th Jul 2025223 PMAQI
29th Jul 2025224 PMAQI
29th Jul 2025225 PMAQI
29th Jul 2025226 PMAQI
29th Jul 2025237 PMAQI
29th Jul 2025238 PMAQI
29th Jul 2025229 PMAQI
29th Jul 20252310 PMAQI
29th Jul 20252411 PMAQI
30th Jul 20252412 AMAQI
30th Jul 2025231 AMAQI
30th Jul 2025242 AMAQI
30th Jul 2025243 AMAQI
30th Jul 2025244 AMAQI
30th Jul 2025335 AMAQI
22°C13/34°C
30th Jul 2025286 AMAQI
30th Jul 2025267 AMAQI
30th Jul 2025268 AMAQI
30th Jul 2025279 AMAQI
30th Jul 20252910 AMAQI
30th Jul 20253111 AMAQI
30th Jul 20253412 PMAQI
30th Jul 2025301 PMAQI
30th Jul 2025262 PMAQI
30th Jul 2025263 PMAQI
30th Jul 2025264 PMAQI
30th Jul 2025265 PMAQI
30th Jul 2025266 PMAQI
30th Jul 2025267 PMAQI
30th Jul 2025268 PMAQI
30th Jul 2025269 PMAQI
30th Jul 20252810 PMAQI
30th Jul 20252611 PMAQI
31st Jul 20252612 AMAQI
31st Jul 2025251 AMAQI
31st Jul 2025262 AMAQI
31st Jul 2025233 AMAQI
31st Jul 2025224 AMAQI
31st Jul 2025225 AMAQI
21°C10/34°C
31st Jul 2025226 AMAQI
31st Jul 2025237 AMAQI
31st Jul 2025228 AMAQI
31st Jul 2025219 AMAQI
31st Jul 20252410 AMAQI
31st Jul 20252611 AMAQI
31st Jul 20252612 PMAQI
31st Jul 2025271 PMAQI
31st Jul 2025292 PMAQI
31st Jul 2025293 PMAQI
31st Jul 2025274 PMAQI
31st Jul 2025245 PMAQI
31st Jul 2025266 PMAQI
31st Jul 2025237 PMAQI
31st Jul 2025258 PMAQI
31st Jul 2025249 PMAQI
31st Jul 20252710 PMAQI
31st Jul 20252811 PMAQI
1st Aug 20252812 AMAQI
1st Aug 2025271 AMAQI
1st Aug 2025242 AMAQI
1st Aug 2025233 AMAQI
1st Aug 2025254 AMAQI
1st Aug 2025245 AMAQI
21°C11/34°C
1st Aug 2025236 AMAQI
1st Aug 2025207 AMAQI
1st Aug 2025208 AMAQI
1st Aug 2025239 AMAQI
1st Aug 20252410 AMAQI
1st Aug 20252411 AMAQI
1st Aug 20252212 PMAQI
1st Aug 2025251 PMAQI
1st Aug 2025242 PMAQI
1st Aug 2025263 PMAQI
1st Aug 2025274 PMAQI
1st Aug 2025325 PMAQI
1st Aug 2025266 PMAQI
1st Aug 2025227 PMAQI
1st Aug 2025238 PMAQI
1st Aug 2025249 PMAQI
1st Aug 20252310 PMAQI
1st Aug 20252511 PMAQI
2nd Aug 20252612 AMAQI
2nd Aug 2025231 AMAQI
2nd Aug 2025262 AMAQI
2nd Aug 2025293 AMAQI
2nd Aug 2025234 AMAQI
2nd Aug 2025245 AMAQI
21°C11/33°C
2nd Aug 2025216 AMAQI
2nd Aug 2025227 AMAQI
2nd Aug 2025268 AMAQI
2nd Aug 2025229 AMAQI
2nd Aug 20252410 AMAQI
2nd Aug 20252311 AMAQI
2nd Aug 20252412 PMAQI
2nd Aug 2025221 PMAQI
2nd Aug 2025232 PMAQI
2nd Aug 2025223 PMAQI
2nd Aug 2025224 PMAQI
2nd Aug 2025225 PMAQI
2nd Aug 2025226 PMAQI
2nd Aug 2025237 PMAQI
2nd Aug 2025218 PMAQI
2nd Aug 2025239 PMAQI
2nd Aug 20252110 PMAQI
2nd Aug 20252611 PMAQI
3rd Aug 20252412 AMAQI
3rd Aug 2025291 AMAQI
3rd Aug 2025292 AMAQI
3rd Aug 2025283 AMAQI
3rd Aug 2025264 AMAQI
3rd Aug 2025245 AMAQI
20°C11/31°C
3rd Aug 2025246 AMAQI
3rd Aug 2025237 AMAQI
3rd Aug 2025248 AMAQI
3rd Aug 2025209 AMAQI
3rd Aug 20252210 AMAQI
3rd Aug 20252111 AMAQI
3rd Aug 20251912 PMAQI
3rd Aug 2025241 PMAQI
3rd Aug 2025262 PMAQI
3rd Aug 2025303 PMAQI
3rd Aug 2025334 PMAQI
3rd Aug 2025305 PMAQI
3rd Aug 2025276 PMAQI
3rd Aug 2025297 PMAQI
3rd Aug 2025278 PMAQI
3rd Aug 2025299 PMAQI
3rd Aug 20253010 PMAQI
3rd Aug 20252811 PMAQI
4th Aug 20253012 AMAQI
4th Aug 2025271 AMAQI
4th Aug 2025252 AMAQI
4th Aug 2025273 AMAQI
4th Aug 2025274 AMAQI
4th Aug 2025255 AMAQI
18°C10/28°C
4th Aug 2025246 AMAQI
4th Aug 2025257 AMAQI
4th Aug 2025278 AMAQI
4th Aug 2025289 AMAQI
4th Aug 20252610 AMAQI
4th Aug 20253011 AMAQI
4th Aug 20253312 PMAQI
4th Aug 2025321 PMAQI
4th Aug 2025322 PMAQI
4th Aug 2025293 PMAQI
4th Aug 2025324 PMAQI
4th Aug 2025345 PMAQI
4th Aug 2025316 PMAQI
4th Aug 2025267 PMAQI
4th Aug 2025268 PMAQI
4th Aug 2025289 PMAQI
4th Aug 20252810 PMAQI
4th Aug 20252811 PMAQI
5th Aug 20252812 AMAQI
5th Aug 2025281 AMAQI
5th Aug 2025282 AMAQI
5th Aug 2025273 AMAQI
5th Aug 2025314 AMAQI
5th Aug 2025295 AMAQI
18°C9/28°C
5th Aug 2025286 AMAQI
5th Aug 2025287 AMAQI
5th Aug 2025288 AMAQI
5th Aug 2025289 AMAQI
5th Aug 20252910 AMAQI
5th Aug 20253111 AMAQI
5th Aug 20253212 PMAQI
5th Aug 2025361 PMAQI
5th Aug 2025342 PMAQI
5th Aug 2025303 PMAQI
5th Aug 2025274 PMAQI
5th Aug 2025305 PMAQI
5th Aug 2025296 PMAQI
5th Aug 2025287 PMAQI
5th Aug 2025268 PMAQI
5th Aug 2025269 PMAQI
5th Aug 20252510 PMAQI
5th Aug 20252611 PMAQI
6th Aug 20252712 AMAQI
6th Aug 2025261 AMAQI
6th Aug 2025302 AMAQI
6th Aug 2025293 AMAQI
6th Aug 2025294 AMAQI
6th Aug 2025305 AMAQI
19°C9/31°C
6th Aug 2025286 AMAQI
6th Aug 2025287 AMAQI
6th Aug 2025328 AMAQI
6th Aug 2025299 AMAQI
6th Aug 20252910 AMAQI
6th Aug 20253011 AMAQI
6th Aug 20252812 PMAQI
6th Aug 2025311 PMAQI
6th Aug 2025282 PMAQI
6th Aug 2025283 PMAQI
6th Aug 2025284 PMAQI
6th Aug 2025305 PMAQI
6th Aug 2025256 PMAQI
6th Aug 2025267 PMAQI
6th Aug 2025268 PMAQI
6th Aug 2025239 PMAQI
6th Aug 20252510 PMAQI
6th Aug 20252311 PMAQI
7th Aug 20252412 AMAQI
7th Aug 2025231 AMAQI
7th Aug 2025262 AMAQI
7th Aug 2025273 AMAQI
7th Aug 2025214 AMAQI
7th Aug 2025215 AMAQI
21°C11/33°C
7th Aug 2025226 AMAQI
7th Aug 2025237 AMAQI
7th Aug 2025208 AMAQI
7th Aug 2025219 AMAQI
7th Aug 20252210 AMAQI
7th Aug 20252211 AMAQI
7th Aug 20252712 PMAQI
7th Aug 2025271 PMAQI
7th Aug 2025262 PMAQI
7th Aug 2025233 PMAQI
7th Aug 2025224 PMAQI
7th Aug 2025215 PMAQI
7th Aug 2025206 PMAQI
7th Aug 2025237 PMAQI
7th Aug 2025248 PMAQI
7th Aug 2025239 PMAQI
7th Aug 20252210 PMAQI
7th Aug 20252311 PMAQI
8th Aug 20252412 AMAQI
8th Aug 2025231 AMAQI
8th Aug 2025242 AMAQI
8th Aug 2025243 AMAQI
8th Aug 2025204 AMAQI
8th Aug 2025215 AMAQI
22°C11/34°C
8th Aug 2025206 AMAQI
8th Aug 2025237 AMAQI
8th Aug 2025238 AMAQI
8th Aug 2025239 AMAQI
8th Aug 20252110 AMAQI
8th Aug 20252411 AMAQI
8th Aug 20252512 PMAQI
8th Aug 2025241 PMAQI
8th Aug 2025242 PMAQI
8th Aug 2025243 PMAQI
8th Aug 2025244 PMAQI
8th Aug 2025235 PMAQI
8th Aug 2025246 PMAQI
8th Aug 2025237 PMAQI
8th Aug 2025228 PMAQI
8th Aug 2025259 PMAQI
8th Aug 20252510 PMAQI
8th Aug 20252411 PMAQI
9th Aug 20252412 AMAQI
9th Aug 2025251 AMAQI
9th Aug 2025262 AMAQI
9th Aug 2025263 AMAQI
9th Aug 2025284 AMAQI
9th Aug 2025255 AMAQI
27°C16/39°C
9th Aug 2025246 AMAQI
9th Aug 2025277 AMAQI
9th Aug 2025258 AMAQI
9th Aug 2025239 AMAQI
9th Aug 20252810 AMAQI
9th Aug 20252811 AMAQI
9th Aug 20252812 PMAQI
9th Aug 2025271 PMAQI
9th Aug 2025262 PMAQI
9th Aug 2025263 PMAQI
9th Aug 2025244 PMAQI
9th Aug 2025245 PMAQI
9th Aug 2025266 PMAQI
9th Aug 2025287 PMAQI
9th Aug 2025288 PMAQI
9th Aug 2025289 PMAQI
9th Aug 20252610 PMAQI
9th Aug 20252711 PMAQI
10th Aug 20252712 AMAQI
10th Aug 2025261 AMAQI
10th Aug 2025272 AMAQI
10th Aug 2025273 AMAQI
10th Aug 2025194 AMAQI
10th Aug 2025205 AMAQI
29°C20/40°C
10th Aug 2025246 AMAQI
10th Aug 2025237 AMAQI
10th Aug 2025228 AMAQI
10th Aug 2025259 AMAQI
10th Aug 20252410 AMAQI
10th Aug 20252411 AMAQI
10th Aug 20252712 PMAQI
10th Aug 2025261 PMAQI
10th Aug 2025272 PMAQI
10th Aug 2025273 PMAQI
10th Aug 2025264 PMAQI
10th Aug 2025265 PMAQI
10th Aug 2025256 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 2025352 AMAQI
11th Aug 2025323 AMAQI
11th Aug 2025354 AMAQI
11th Aug 2025325 AMAQI
27°C17/41°C
11th Aug 2025346 AMAQI
6 AM11th Aug 2025347 AMAQI
11th Aug 2025358 AMAQI
11th Aug 2025349 AMAQI
11th Aug 20253710 AMAQI
11th Aug 20254211 AMAQI
11th Aug 20254112 PMAQI
11th Aug 2025441 PMAQI
1 PM11th Aug 2025392 PMAQI
11th Aug 2025363 PMAQI
11th Aug 2025324 PMAQI
11th Aug 2025315 PMAQI
11th Aug 2025346 PMAQI
11th Aug 2025337 PMAQI
11th Aug 2025348 PMAQI
8 PM1 AM
5 AM
26°C15/39°C
Day time
Avg. Highest Time
1 PM - 8 PM
27AQI
8 hours / Day
240 hours / Month
Avg. Lowest Time
6 AM - 11 AM
24AQI
6 hours / Day
180 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 1 PM to 8 PM (Avg. 27), while the lowest AQI was between 6 AM to 11 AM (Avg. 24).
Night time
Avg. Highest Time
12 AM - 3 AM
27AQI
4 hours / Day
120 hours / Month
Avg. Lowest Time
4 AM - 5 AM
25AQI
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. 27), while the lowest AQI was between 4 AM to 5 AM (Avg. 25).
2025 Days Vs Air Quality
Ukiah Library, Ukiah, California, United States
2025
95%
210
5%
12
Total number of days with different AQI categories in last 224 days in 2025 (141 days remaining)
Good
210 DaysModerate
12 DaysPoor
0 DaysUnhealthy
0 DaysSevere
0 DaysHazardous
0 DaysUnder WHO’s Safe Air Quality Limits: 95%
Health Risk Level:
Very Low
In 2025, 95% 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
Ukiah Library, Ukiah, 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
33AQI
33AQI
3rd January 2025
33AQI
33AQI
4th January 2025
35AQI
35AQI
5th January 2025
41AQI
41AQI
6th January 2025
31AQI
31AQI
7th January 2025
31AQI
31AQI
8th January 2025
42AQI
42AQI
9th January 2025
47AQI
47AQI
10th January 2025
44AQI
44AQI
11th January 2025
36AQI
36AQI
12th January 2025
45AQI
45AQI
13th January 2025
37AQI
37AQI
14th January 2025
47AQI
47AQI
15th January 2025
55AQI
55AQI
16th January 2025
47AQI
47AQI
17th January 2025
46AQI
46AQI
18th January 2025
48AQI
48AQI
19th January 2025
52AQI
52AQI
20th January 2025
47AQI
47AQI
21st January 2025
52AQI
52AQI
22nd January 2025
55AQI
55AQI
23rd January 2025
58AQI
58AQI
24th January 2025
56AQI
56AQI
25th January 2025
49AQI
49AQI
26th January 2025
51AQI
51AQI
27th January 2025
55AQI
55AQI
28th January 2025
54AQI
54AQI
29th January 2025
57AQI
57AQI
30th January 2025
63AQI
63AQI
31st January 2025
46AQI
46AQI
1st February 2025
29AQI
29AQI
2nd February 2025
23AQI
23AQI
3rd February 2025
24AQI
24AQI
4th February 2025
25AQI
25AQI
5th February 2025
39AQI
39AQI
6th February 2025
43AQI
43AQI
7th February 2025
27AQI
27AQI
8th February 2025
35AQI
35AQI
9th February 2025
37AQI
37AQI
10th February 2025
46AQI
46AQI
11th February 2025
42AQI
42AQI
12th February 2025
42AQI
42AQI
13th February 2025
28AQI
28AQI
14th February 2025
40AQI
40AQI
15th February 2025
48AQI
48AQI
16th February 2025
30AQI
30AQI
17th February 2025
26AQI
26AQI
18th February 2025
34AQI
34AQI
19th February 2025
23AQI
23AQI
20th February 2025
28AQI
28AQI
21st February 2025
34AQI
34AQI
22nd February 2025
32AQI
32AQI
23rd February 2025
23AQI
23AQI
24th February 2025
24AQI
24AQI
25th February 2025
30AQI
30AQI
26th February 2025
35AQI
35AQI
27th February 2025
33AQI
33AQI
28th February 2025
34AQI
34AQI
1st March 2025
35AQI
35AQI
2nd March 2025
23AQI
23AQI
3rd March 2025
24AQI
24AQI
4th March 2025
26AQI
26AQI
5th March 2025
22AQI
22AQI
6th March 2025
27AQI
27AQI
7th March 2025
36AQI
36AQI
8th March 2025
34AQI
34AQI
9th March 2025
36AQI
36AQI
10th March 2025
38AQI
38AQI
11th March 2025
31AQI
31AQI
12th March 2025
24AQI
24AQI
13th March 2025
24AQI
24AQI
14th March 2025
32AQI
32AQI
15th March 2025
38AQI
38AQI
16th March 2025
19AQI
19AQI
17th March 2025
18AQI
18AQI
18th March 2025
31AQI
31AQI
19th March 2025
28AQI
28AQI
20th March 2025
24AQI
24AQI
21st March 2025
28AQI
28AQI
22nd March 2025
18AQI
18AQI
23rd March 2025
22AQI
22AQI
24th March 2025
24AQI
24AQI
25th March 2025
25AQI
25AQI
26th March 2025
26AQI
26AQI
27th March 2025
19AQI
19AQI
28th March 2025
21AQI
21AQI
29th March 2025
26AQI
26AQI
30th March 2025
24AQI
24AQI
31st March 2025
18AQI
18AQI
1st April 2025
24AQI
24AQI
2nd April 2025
24AQI
24AQI
3rd April 2025
25AQI
25AQI
4th April 2025
31AQI
31AQI
5th April 2025
26AQI
26AQI
6th April 2025
22AQI
22AQI
7th April 2025
15AQI
15AQI
8th April 2025
18AQI
18AQI
9th April 2025
19AQI
19AQI
10th April 2025
20AQI
20AQI
11th April 2025
20AQI
20AQI
12th April 2025
22AQI
22AQI
13th April 2025
24AQI
24AQI
14th April 2025
27AQI
27AQI
15th April 2025
28AQI
28AQI
16th April 2025
26AQI
26AQI
17th April 2025
23AQI
23AQI
18th April 2025
26AQI
26AQI
19th April 2025
24AQI
24AQI
20th April 2025
20AQI
20AQI
21st April 2025
23AQI
23AQI
22nd April 2025
23AQI
23AQI
23rd April 2025
35AQI
35AQI
24th April 2025
34AQI
34AQI
25th April 2025
20AQI
20AQI
26th April 2025
20AQI
20AQI
27th April 2025
21AQI
21AQI
28th April 2025
22AQI
22AQI
29th April 2025
26AQI
26AQI
30th April 2025
33AQI
33AQI
1st May 2025
32AQI
32AQI
2nd May 2025
24AQI
24AQI
3rd May 2025
19AQI
19AQI
4th May 2025
24AQI
24AQI
5th May 2025
23AQI
23AQI
6th May 2025
31AQI
31AQI
7th May 2025
33AQI
33AQI
8th May 2025
25AQI
25AQI
9th May 2025
27AQI
27AQI
10th May 2025
23AQI
23AQI
11th May 2025
18AQI
18AQI
12th May 2025
17AQI
17AQI
13th May 2025
17AQI
17AQI
14th May 2025
20AQI
20AQI
15th May 2025
23AQI
23AQI
16th May 2025
24AQI
24AQI
17th May 2025
18AQI
18AQI
18th May 2025
19AQI
19AQI
19th May 2025
24AQI
24AQI
20th May 2025
16AQI
16AQI
21st May 2025
24AQI
24AQI
22nd May 2025
25AQI
25AQI
23rd May 2025
17AQI
17AQI
24th May 2025
20AQI
20AQI
25th May 2025
25AQI
25AQI
26th May 2025
15AQI
15AQI
27th May 2025
20AQI
20AQI
28th May 2025
22AQI
22AQI
29th May 2025
21AQI
21AQI
30th May 2025
22AQI
22AQI
31st May 2025
26AQI
26AQI
1st June 2025
24AQI
24AQI
2nd June 2025
42AQI
42AQI
3rd June 2025
32AQI
32AQI
4th June 2025
27AQI
27AQI
5th June 2025
24AQI
24AQI
6th June 2025
21AQI
21AQI
7th June 2025
22AQI
22AQI
8th June 2025
23AQI
23AQI
9th June 2025
25AQI
25AQI
10th June 2025
26AQI
26AQI
11th June 2025
29AQI
29AQI
12th June 2025
35AQI
35AQI
13th June 2025
33AQI
33AQI
14th June 2025
31AQI
31AQI
15th June 2025
32AQI
32AQI
16th June 2025
29AQI
29AQI
17th June 2025
24AQI
24AQI
18th June 2025
21AQI
21AQI
19th June 2025
24AQI
24AQI
20th June 2025
26AQI
26AQI
21st June 2025
22AQI
22AQI
22nd June 2025
21AQI
21AQI
23rd June 2025
24AQI
24AQI
24th June 2025
25AQI
25AQI
25th June 2025
27AQI
27AQI
26th June 2025
23AQI
23AQI
27th June 2025
21AQI
21AQI
28th June 2025
20AQI
20AQI
29th June 2025
22AQI
22AQI
30th June 2025
25AQI
25AQI
1st July 2025
26AQI
26AQI
2nd July 2025
26AQI
26AQI
3rd July 2025
23AQI
23AQI
4th July 2025
25AQI
25AQI
5th July 2025
31AQI
31AQI
6th July 2025
31AQI
31AQI
7th July 2025
25AQI
25AQI
8th July 2025
25AQI
25AQI
9th July 2025
20AQI
20AQI
10th July 2025
25AQI
25AQI
11th July 2025
43AQI
43AQI
12th July 2025
48AQI
48AQI
13th July 2025
37AQI
37AQI
14th July 2025
34AQI
34AQI
15th July 2025
29AQI
29AQI
16th July 2025
31AQI
31AQI
17th July 2025
27AQI
27AQI
18th July 2025
24AQI
24AQI
19th July 2025
27AQI
27AQI
20th July 2025
24AQI
24AQI
21st July 2025
27AQI
27AQI
22nd July 2025
22AQI
22AQI
23rd July 2025
24AQI
24AQI
24th July 2025
20AQI
20AQI
25th July 2025
18AQI
18AQI
26th July 2025
17AQI
17AQI
27th July 2025
17AQI
17AQI
28th July 2025
19AQI
19AQI
29th July 2025
21AQI
21AQI
30th July 2025
27AQI
27AQI
31st July 2025
25AQI
25AQI
1st August 2025
25AQI
25AQI
2nd August 2025
23AQI
23AQI
3rd August 2025
26AQI
26AQI
4th August 2025
28AQI
28AQI
5th August 2025
29AQI
29AQI
6th August 2025
28AQI
28AQI
7th August 2025
23AQI
23AQI
8th August 2025
23AQI
23AQI
9th August 2025
26AQI
26AQI
10th August 2025
25AQI
25AQI
47AQI
33AQI
26AQI
24AQI
22AQI
26AQI
26AQI
26AQI
No. of days
Jan.Feb.Mar.Apr.MayJun.Jul.Aug.Sep.Oct.Nov.Dec.Total Days
202529AQI
19
12
28
31
30
31
30
31
10
210
12
Highest AQI recorded in
January47AQI
Lowest AQI recorded in
May22AQI
202430AQI
29
2
29
31
30
31
28
31
30
1
29
1
30
1
26
3
1
22
7
1
1
346
15
2
1
Highest AQI recorded in
December47AQI
Lowest AQI recorded in
May23AQI
202330AQI
29
27
1
29
30
28
26
1
20
7
22
5
1
24
4
31
22
7
24
6
312
31
1
Highest AQI recorded in
August43AQI
Lowest AQI recorded in
April19AQI
202235AQI
13
17
19
3
31
29
31
30
19
2
2
1
20
9
24
4
15
15
22
9
255
60
Highest AQI recorded in
August52AQI
Lowest AQI recorded in
May24AQI
202134AQI
27
3
28
31
29
1
31
30
30
1
11
14
6
21
8
1
31
23
6
20
11
312
44
7
Highest AQI recorded in
August66AQI
Lowest AQI recorded in
June21AQI
202037AQI
13
20
18
24
31
23
2
4
2
10
10
9
1
22
6
1
1
27
3
24
7
212
28
14
4
Highest AQI recorded in
September76AQI
Lowest AQI recorded in
May16AQI
Most & Least Polluted Years Over the Last 6 Years
Most Polluted Year Recorded
2020(Avg.)
37AQILeast Polluted Year Recorded
2025(Avg.)
29AQIUkiah Library's annual 2025 AQI (29) shows an average percentage change of -12.1% (improved AQI) compared to previous years: 2020 (37), 2021 (34), 2022 (35), 2023 (30), 2024 (30).
