San Luis Obispo, 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
San Luis Obispo, California, United States
2024
2025
AQI
.
Days
AQI Trends: Highest and Lowest
Highest AQI recorded on
4th Aug 2025
52AQILowest AQI recorded on
18th Aug 2024
19AQISame Day Analysis (7th August ):
On this day, AQI across the 2 years varied significantly: 2025 ranks 2nd highest AQI at 31 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
San Luis Obispo, California, United States
AQI
Day
Night
.
6 AM7th Aug 2025
8 PM
5 AM8th Aug 2025
Day time
Avg. Highest Time
9AM7th Aug
35AQI
Avg. Lowest Time
6PM7th Aug
26AQI
Night time
Avg. Highest Time
9PM7th Aug
33AQI
Avg. Lowest Time
2AM8th Aug
26AQI
In the last 24 hours,
San Luis Obispo's AQI reached its highest point of 35 at 9 AM during the Day, while the lowest point, undefined, was recorded at 5 AM during the Night between 7th Aug and 8th Aug 2025.
Day & Night AQI Trend : Jul - Aug 2025
San Luis Obispo, 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 2025206 AMAQI
9th Jul 2025187 AMAQI
9th Jul 2025188 AMAQI
9th Jul 2025199 AMAQI
9th Jul 20251710 AMAQI
9th Jul 20251811 AMAQI
9th Jul 20251712 PMAQI
9th Jul 2025181 PMAQI
9th Jul 2025192 PMAQI
9th Jul 2025223 PMAQI
9th Jul 2025224 PMAQI
9th Jul 2025215 PMAQI
9th Jul 2025226 PMAQI
9th Jul 2025217 PMAQI
9th Jul 2025228 PMAQI
9th Jul 2025279 PMAQI
9th Jul 20253010 PMAQI
9th Jul 20252811 PMAQI
10th Jul 20252712 AMAQI
10th Jul 2025281 AMAQI
10th Jul 2025262 AMAQI
10th Jul 2025263 AMAQI
10th Jul 2025214 AMAQI
10th Jul 2025195 AMAQI
21°C10/33°C
10th Jul 2025186 AMAQI
10th Jul 2025197 AMAQI
10th Jul 2025198 AMAQI
10th Jul 2025209 AMAQI
10th Jul 20252210 AMAQI
10th Jul 20252211 AMAQI
10th Jul 20252212 PMAQI
10th Jul 2025221 PMAQI
10th Jul 2025212 PMAQI
10th Jul 2025263 PMAQI
10th Jul 2025254 PMAQI
10th Jul 2025265 PMAQI
10th Jul 2025276 PMAQI
10th Jul 2025257 PMAQI
10th Jul 2025258 PMAQI
10th Jul 2025289 PMAQI
10th Jul 20253010 PMAQI
10th Jul 20253111 PMAQI
11th Jul 20253112 AMAQI
11th Jul 2025271 AMAQI
11th Jul 2025282 AMAQI
11th Jul 2025263 AMAQI
11th Jul 2025244 AMAQI
11th Jul 2025265 AMAQI
24°C16/36°C
11th Jul 2025276 AMAQI
11th Jul 2025287 AMAQI
11th Jul 2025258 AMAQI
11th Jul 2025259 AMAQI
11th Jul 20252510 AMAQI
11th Jul 20252511 AMAQI
11th Jul 20252712 PMAQI
11th Jul 2025251 PMAQI
11th Jul 2025262 PMAQI
11th Jul 2025303 PMAQI
11th Jul 2025324 PMAQI
11th Jul 2025345 PMAQI
11th Jul 2025326 PMAQI
11th Jul 2025277 PMAQI
11th Jul 2025268 PMAQI
11th Jul 2025349 PMAQI
11th Jul 20253310 PMAQI
11th Jul 20253611 PMAQI
12th Jul 20253612 AMAQI
12th Jul 2025311 AMAQI
12th Jul 2025362 AMAQI
12th Jul 2025343 AMAQI
12th Jul 2025354 AMAQI
12th Jul 2025405 AMAQI
19°C14/25°C
12th Jul 2025376 AMAQI
12th Jul 2025357 AMAQI
12th Jul 2025308 AMAQI
12th Jul 2025319 AMAQI
12th Jul 20253010 AMAQI
12th Jul 20252711 AMAQI
12th Jul 20252612 PMAQI
12th Jul 2025251 PMAQI
12th Jul 2025312 PMAQI
12th Jul 2025323 PMAQI
12th Jul 2025324 PMAQI
12th Jul 2025335 PMAQI
12th Jul 2025306 PMAQI
12th Jul 2025317 PMAQI
12th Jul 2025318 PMAQI
12th Jul 2025299 PMAQI
12th Jul 20252910 PMAQI
12th Jul 20252911 PMAQI
13th Jul 20252912 AMAQI
13th Jul 2025301 AMAQI
13th Jul 2025342 AMAQI
13th Jul 2025323 AMAQI
13th Jul 2025244 AMAQI
13th Jul 2025265 AMAQI
16°C12/24°C
13th Jul 2025226 AMAQI
13th Jul 2025257 AMAQI
13th Jul 2025268 AMAQI
13th Jul 2025499 AMAQI
13th Jul 20252810 AMAQI
13th Jul 20252311 AMAQI
13th Jul 20252612 PMAQI
13th Jul 2025241 PMAQI
13th Jul 2025242 PMAQI
13th Jul 2025253 PMAQI
13th Jul 2025344 PMAQI
13th Jul 2025365 PMAQI
13th Jul 2025296 PMAQI
13th Jul 2025257 PMAQI
13th Jul 2025238 PMAQI
13th Jul 2025229 PMAQI
13th Jul 20252510 PMAQI
13th Jul 20252511 PMAQI
14th Jul 20252612 AMAQI
14th Jul 2025291 AMAQI
14th Jul 2025272 AMAQI
14th Jul 2025243 AMAQI
14th Jul 2025224 AMAQI
14th Jul 2025195 AMAQI
17°C12/25°C
14th Jul 2025206 AMAQI
14th Jul 2025207 AMAQI
14th Jul 2025188 AMAQI
14th Jul 2025199 AMAQI
14th Jul 20251910 AMAQI
14th Jul 20252011 AMAQI
14th Jul 20252012 PMAQI
14th Jul 2025211 PMAQI
14th Jul 2025232 PMAQI
14th Jul 2025233 PMAQI
14th Jul 2025224 PMAQI
14th Jul 2025235 PMAQI
14th Jul 2025266 PMAQI
14th Jul 2025247 PMAQI
14th Jul 2025228 PMAQI
14th Jul 2025199 PMAQI
14th Jul 20252010 PMAQI
14th Jul 20252411 PMAQI
15th Jul 20252512 AMAQI
15th Jul 2025261 AMAQI
15th Jul 2025252 AMAQI
15th Jul 2025243 AMAQI
15th Jul 2025204 AMAQI
15th Jul 2025245 AMAQI
18°C12/24°C
15th Jul 2025236 AMAQI
15th Jul 2025197 AMAQI
15th Jul 2025208 AMAQI
15th Jul 2025239 AMAQI
15th Jul 20252410 AMAQI
15th Jul 20252411 AMAQI
15th Jul 20252312 PMAQI
15th Jul 2025201 PMAQI
15th Jul 2025212 PMAQI
15th Jul 2025243 PMAQI
15th Jul 2025204 PMAQI
15th Jul 2025215 PMAQI
15th Jul 2025236 PMAQI
15th Jul 2025207 PMAQI
15th Jul 2025208 PMAQI
15th Jul 2025209 PMAQI
15th Jul 20252110 PMAQI
15th Jul 20252011 PMAQI
16th Jul 20252112 AMAQI
16th Jul 2025231 AMAQI
16th Jul 2025232 AMAQI
16th Jul 2025243 AMAQI
16th Jul 2025204 AMAQI
16th Jul 2025185 AMAQI
16°C12/22°C
16th Jul 2025176 AMAQI
16th Jul 2025187 AMAQI
16th Jul 2025208 AMAQI
16th Jul 2025229 AMAQI
16th Jul 20252310 AMAQI
16th Jul 20252011 AMAQI
16th Jul 20251912 PMAQI
16th Jul 2025211 PMAQI
16th Jul 2025212 PMAQI
16th Jul 2025223 PMAQI
16th Jul 2025254 PMAQI
16th Jul 2025235 PMAQI
16th Jul 2025256 PMAQI
16th Jul 2025197 PMAQI
16th Jul 2025188 PMAQI
16th Jul 2025219 PMAQI
16th Jul 20251810 PMAQI
16th Jul 20252211 PMAQI
17th Jul 20252412 AMAQI
17th Jul 2025241 AMAQI
17th Jul 2025222 AMAQI
17th Jul 2025203 AMAQI
17th Jul 2025194 AMAQI
17th Jul 2025225 AMAQI
16°C13/21°C
17th Jul 2025206 AMAQI
17th Jul 2025187 AMAQI
17th Jul 2025188 AMAQI
17th Jul 2025199 AMAQI
17th Jul 20251910 AMAQI
17th Jul 20252111 AMAQI
17th Jul 20252512 PMAQI
17th Jul 2025251 PMAQI
17th Jul 2025232 PMAQI
17th Jul 2025213 PMAQI
17th Jul 2025204 PMAQI
17th Jul 2025215 PMAQI
17th Jul 2025206 PMAQI
17th Jul 2025207 PMAQI
17th Jul 2025208 PMAQI
17th Jul 2025219 PMAQI
17th Jul 20252310 PMAQI
17th Jul 20252411 PMAQI
18th Jul 20252312 AMAQI
18th Jul 2025211 AMAQI
18th Jul 2025202 AMAQI
18th Jul 2025203 AMAQI
18th Jul 2025184 AMAQI
18th Jul 2025195 AMAQI
18°C12/24°C
18th Jul 2025186 AMAQI
18th Jul 2025207 AMAQI
18th Jul 2025188 AMAQI
18th Jul 2025189 AMAQI
18th Jul 20252010 AMAQI
18th Jul 20252211 AMAQI
18th Jul 20252312 PMAQI
18th Jul 2025251 PMAQI
18th Jul 2025232 PMAQI
18th Jul 2025223 PMAQI
18th Jul 2025224 PMAQI
18th Jul 2025225 PMAQI
18th Jul 2025206 PMAQI
18th Jul 2025187 PMAQI
18th Jul 2025208 PMAQI
18th Jul 2025279 PMAQI
18th Jul 20252810 PMAQI
18th Jul 20252611 PMAQI
19th Jul 20252312 AMAQI
19th Jul 2025241 AMAQI
19th Jul 2025272 AMAQI
19th Jul 2025253 AMAQI
19th Jul 2025204 AMAQI
19th Jul 2025185 AMAQI
17°C10/26°C
19th Jul 2025186 AMAQI
19th Jul 2025217 AMAQI
19th Jul 2025218 AMAQI
19th Jul 2025229 AMAQI
19th Jul 20252210 AMAQI
19th Jul 20252211 AMAQI
19th Jul 20252312 PMAQI
19th Jul 2025221 PMAQI
19th Jul 2025212 PMAQI
19th Jul 2025233 PMAQI
19th Jul 2025254 PMAQI
19th Jul 2025295 PMAQI
19th Jul 2025306 PMAQI
19th Jul 2025257 PMAQI
19th Jul 2025268 PMAQI
19th Jul 2025349 PMAQI
19th Jul 20253010 PMAQI
19th Jul 20252711 PMAQI
20th Jul 20252812 AMAQI
20th Jul 2025301 AMAQI
20th Jul 2025282 AMAQI
20th Jul 2025273 AMAQI
20th Jul 2025264 AMAQI
20th Jul 2025255 AMAQI
17°C11/25°C
20th Jul 2025246 AMAQI
20th Jul 2025247 AMAQI
20th Jul 2025238 AMAQI
20th Jul 2025219 AMAQI
20th Jul 20252110 AMAQI
20th Jul 20252311 AMAQI
20th Jul 20252212 PMAQI
20th Jul 2025211 PMAQI
20th Jul 2025232 PMAQI
20th Jul 2025243 PMAQI
20th Jul 2025264 PMAQI
20th Jul 2025255 PMAQI
20th Jul 2025236 PMAQI
20th Jul 2025237 PMAQI
20th Jul 2025248 PMAQI
20th Jul 2025229 PMAQI
20th Jul 20252310 PMAQI
20th Jul 20252211 PMAQI
21st Jul 20252312 AMAQI
21st Jul 2025201 AMAQI
21st Jul 2025182 AMAQI
21st Jul 2025173 AMAQI
21st Jul 2025154 AMAQI
21st Jul 2025145 AMAQI
16°C11/22°C
21st Jul 2025166 AMAQI
21st Jul 2025177 AMAQI
21st Jul 2025178 AMAQI
21st Jul 2025179 AMAQI
21st Jul 20251810 AMAQI
21st Jul 20251711 AMAQI
21st Jul 20252412 PMAQI
21st Jul 2025221 PMAQI
21st Jul 2025222 PMAQI
21st Jul 2025223 PMAQI
21st Jul 2025224 PMAQI
21st Jul 2025235 PMAQI
21st Jul 2025226 PMAQI
21st Jul 2025217 PMAQI
21st Jul 2025188 PMAQI
21st Jul 2025209 PMAQI
21st Jul 20252110 PMAQI
21st Jul 20252411 PMAQI
22nd Jul 20252212 AMAQI
22nd Jul 2025181 AMAQI
22nd Jul 2025162 AMAQI
22nd Jul 2025173 AMAQI
22nd Jul 2025144 AMAQI
22nd Jul 2025135 AMAQI
16°C11/22°C
22nd Jul 2025136 AMAQI
22nd Jul 2025147 AMAQI
22nd Jul 2025138 AMAQI
22nd Jul 2025149 AMAQI
22nd Jul 20251410 AMAQI
22nd Jul 20251511 AMAQI
22nd Jul 20251412 PMAQI
22nd Jul 2025131 PMAQI
22nd Jul 2025132 PMAQI
22nd Jul 2025143 PMAQI
22nd Jul 2025154 PMAQI
22nd Jul 2025165 PMAQI
22nd Jul 2025166 PMAQI
22nd Jul 2025167 PMAQI
22nd Jul 2025158 PMAQI
22nd Jul 2025169 PMAQI
22nd Jul 20251710 PMAQI
22nd Jul 20251711 PMAQI
23rd Jul 20251712 AMAQI
23rd Jul 2025181 AMAQI
23rd Jul 2025172 AMAQI
23rd Jul 2025173 AMAQI
23rd Jul 2025184 AMAQI
23rd Jul 2025165 AMAQI
16°C11/22°C
23rd Jul 2025126 AMAQI
23rd Jul 2025137 AMAQI
23rd Jul 2025148 AMAQI
23rd Jul 2025149 AMAQI
23rd Jul 20251310 AMAQI
23rd Jul 20251511 AMAQI
23rd Jul 20251612 PMAQI
23rd Jul 2025151 PMAQI
23rd Jul 2025162 PMAQI
23rd Jul 2025173 PMAQI
23rd Jul 2025184 PMAQI
23rd Jul 2025175 PMAQI
23rd Jul 2025176 PMAQI
23rd Jul 2025167 PMAQI
23rd Jul 2025168 PMAQI
23rd Jul 2025179 PMAQI
23rd Jul 20251810 PMAQI
23rd Jul 20251711 PMAQI
24th Jul 20251612 AMAQI
24th Jul 2025161 AMAQI
24th Jul 2025152 AMAQI
24th Jul 2025153 AMAQI
24th Jul 2025144 AMAQI
24th Jul 2025135 AMAQI
16°C11/23°C
24th Jul 2025126 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 2025161 PMAQI
24th Jul 2025172 PMAQI
24th Jul 2025183 PMAQI
24th Jul 2025184 PMAQI
24th Jul 2025165 PMAQI
24th Jul 2025176 PMAQI
24th Jul 2025157 PMAQI
24th Jul 2025178 PMAQI
24th Jul 2025219 PMAQI
24th Jul 20251810 PMAQI
24th Jul 20251911 PMAQI
25th Jul 20251812 AMAQI
25th Jul 2025161 AMAQI
25th Jul 2025162 AMAQI
25th Jul 2025163 AMAQI
25th Jul 2025144 AMAQI
25th Jul 2025155 AMAQI
16°C10/23°C
25th Jul 2025146 AMAQI
25th Jul 2025147 AMAQI
25th Jul 2025148 AMAQI
25th Jul 2025159 AMAQI
25th Jul 20251510 AMAQI
25th Jul 20251511 AMAQI
25th Jul 20251512 PMAQI
25th Jul 2025141 PMAQI
25th Jul 2025162 PMAQI
25th Jul 2025173 PMAQI
25th Jul 2025184 PMAQI
25th Jul 2025185 PMAQI
25th Jul 2025186 PMAQI
25th Jul 2025167 PMAQI
25th Jul 2025178 PMAQI
25th Jul 2025199 PMAQI
25th Jul 20251710 PMAQI
25th Jul 20251711 PMAQI
26th Jul 20251712 AMAQI
26th Jul 2025171 AMAQI
26th Jul 2025162 AMAQI
26th Jul 2025163 AMAQI
26th Jul 2025134 AMAQI
26th Jul 2025155 AMAQI
16°C11/23°C
26th Jul 2025146 AMAQI
26th Jul 2025147 AMAQI
26th Jul 2025168 AMAQI
26th Jul 2025169 AMAQI
26th Jul 20251810 AMAQI
26th Jul 20251611 AMAQI
26th Jul 20251712 PMAQI
26th Jul 2025141 PMAQI
26th Jul 2025162 PMAQI
26th Jul 2025183 PMAQI
26th Jul 2025174 PMAQI
26th Jul 2025165 PMAQI
26th Jul 2025166 PMAQI
26th Jul 2025167 PMAQI
26th Jul 2025168 PMAQI
26th Jul 2025179 PMAQI
26th Jul 20251710 PMAQI
26th Jul 20251911 PMAQI
27th Jul 20251812 AMAQI
27th Jul 2025161 AMAQI
27th Jul 2025162 AMAQI
27th Jul 2025173 AMAQI
27th Jul 2025154 AMAQI
27th Jul 2025145 AMAQI
16°C12/23°C
27th Jul 2025156 AMAQI
27th Jul 2025177 AMAQI
27th Jul 2025168 AMAQI
27th Jul 2025199 AMAQI
27th Jul 20251610 AMAQI
27th Jul 20251611 AMAQI
27th Jul 20251712 PMAQI
27th Jul 2025161 PMAQI
27th Jul 2025162 PMAQI
27th Jul 2025183 PMAQI
27th Jul 2025174 PMAQI
27th Jul 2025185 PMAQI
27th Jul 2025196 PMAQI
27th Jul 2025167 PMAQI
27th Jul 2025148 PMAQI
27th Jul 2025169 PMAQI
27th Jul 20251710 PMAQI
27th Jul 20252011 PMAQI
28th Jul 20251812 AMAQI
28th Jul 2025191 AMAQI
28th Jul 2025182 AMAQI
28th Jul 2025173 AMAQI
28th Jul 2025184 AMAQI
28th Jul 2025245 AMAQI
17°C11/24°C
28th Jul 2025226 AMAQI
28th Jul 2025197 AMAQI
28th Jul 2025188 AMAQI
28th Jul 2025179 AMAQI
28th Jul 20251810 AMAQI
28th Jul 20251811 AMAQI
28th Jul 20251812 PMAQI
28th Jul 2025201 PMAQI
28th Jul 2025202 PMAQI
28th Jul 2025213 PMAQI
28th Jul 2025234 PMAQI
28th Jul 2025215 PMAQI
28th Jul 2025226 PMAQI
28th Jul 2025217 PMAQI
28th Jul 2025218 PMAQI
28th Jul 2025229 PMAQI
28th Jul 20252310 PMAQI
28th Jul 20253011 PMAQI
29th Jul 20253612 AMAQI
29th Jul 2025301 AMAQI
29th Jul 2025262 AMAQI
29th Jul 2025203 AMAQI
29th Jul 2025214 AMAQI
29th Jul 2025245 AMAQI
18°C12/26°C
29th Jul 2025236 AMAQI
29th Jul 2025227 AMAQI
29th Jul 2025228 AMAQI
29th Jul 2025249 AMAQI
29th Jul 20252510 AMAQI
29th Jul 20252611 AMAQI
29th Jul 20252712 PMAQI
29th Jul 2025251 PMAQI
29th Jul 2025252 PMAQI
29th Jul 2025283 PMAQI
29th Jul 2025314 PMAQI
29th Jul 2025325 PMAQI
29th Jul 2025326 PMAQI
29th Jul 2025267 PMAQI
29th Jul 2025258 PMAQI
29th Jul 2025389 PMAQI
29th Jul 20253910 PMAQI
29th Jul 20253811 PMAQI
30th Jul 20253912 AMAQI
30th Jul 2025381 AMAQI
30th Jul 2025342 AMAQI
30th Jul 2025323 AMAQI
30th Jul 2025324 AMAQI
30th Jul 2025335 AMAQI
20°C13/30°C
30th Jul 2025346 AMAQI
30th Jul 2025327 AMAQI
30th Jul 2025298 AMAQI
30th Jul 2025289 AMAQI
30th Jul 20253110 AMAQI
30th Jul 20253111 AMAQI
30th Jul 20252812 PMAQI
30th Jul 2025291 PMAQI
30th Jul 2025322 PMAQI
30th Jul 2025323 PMAQI
30th Jul 2025324 PMAQI
30th Jul 2025325 PMAQI
30th Jul 2025326 PMAQI
30th Jul 2025327 PMAQI
30th Jul 2025328 PMAQI
30th Jul 2025369 PMAQI
30th Jul 20253810 PMAQI
30th Jul 20253911 PMAQI
31st Jul 20253812 AMAQI
31st Jul 2025361 AMAQI
31st Jul 2025362 AMAQI
31st Jul 2025343 AMAQI
31st Jul 2025274 AMAQI
31st Jul 2025285 AMAQI
19°C12/26°C
31st Jul 2025276 AMAQI
31st Jul 2025267 AMAQI
31st Jul 2025268 AMAQI
31st Jul 2025269 AMAQI
31st Jul 20252810 AMAQI
31st Jul 20253011 AMAQI
31st Jul 20253212 PMAQI
31st Jul 2025311 PMAQI
31st Jul 2025272 PMAQI
31st Jul 2025243 PMAQI
31st Jul 2025204 PMAQI
31st Jul 2025215 PMAQI
31st Jul 2025216 PMAQI
31st Jul 2025297 PMAQI
31st Jul 2025268 PMAQI
31st Jul 2025229 PMAQI
31st Jul 20252610 PMAQI
31st Jul 20252611 PMAQI
1st Aug 20253112 AMAQI
1st Aug 2025251 AMAQI
1st Aug 2025252 AMAQI
1st Aug 2025253 AMAQI
1st Aug 2025254 AMAQI
1st Aug 2025215 AMAQI
19°C12/29°C
1st Aug 2025186 AMAQI
1st Aug 2025167 AMAQI
1st Aug 2025218 AMAQI
1st Aug 2025209 AMAQI
1st Aug 20251910 AMAQI
1st Aug 20251811 AMAQI
1st Aug 20252112 PMAQI
1st Aug 2025181 PMAQI
1st Aug 2025172 PMAQI
1st Aug 2025183 PMAQI
1st Aug 2025224 PMAQI
1st Aug 2025215 PMAQI
1st Aug 2025216 PMAQI
1st Aug 2025217 PMAQI
1st Aug 2025218 PMAQI
1st Aug 2025279 PMAQI
1st Aug 20252610 PMAQI
1st Aug 20252811 PMAQI
2nd Aug 20253012 AMAQI
2nd Aug 2025241 AMAQI
2nd Aug 2025232 AMAQI
2nd Aug 2025273 AMAQI
2nd Aug 2025244 AMAQI
2nd Aug 2025215 AMAQI
17°C11/25°C
2nd Aug 2025196 AMAQI
2nd Aug 2025217 AMAQI
2nd Aug 2025228 AMAQI
2nd Aug 2025249 AMAQI
2nd Aug 20252410 AMAQI
2nd Aug 20252411 AMAQI
2nd Aug 20252312 PMAQI
2nd Aug 2025241 PMAQI
2nd Aug 2025222 PMAQI
2nd Aug 2025203 PMAQI
2nd Aug 2025214 PMAQI
2nd Aug 2025275 PMAQI
2nd Aug 2025326 PMAQI
2nd Aug 2025257 PMAQI
2nd Aug 2025328 PMAQI
2nd Aug 2025369 PMAQI
2nd Aug 20254010 PMAQI
2nd Aug 20253211 PMAQI
3rd Aug 20253112 AMAQI
3rd Aug 2025311 AMAQI
3rd Aug 2025272 AMAQI
3rd Aug 2025243 AMAQI
3rd Aug 2025214 AMAQI
3rd Aug 2025205 AMAQI
20°C13/31°C
3rd Aug 2025206 AMAQI
3rd Aug 2025207 AMAQI
3rd Aug 2025188 AMAQI
3rd Aug 2025189 AMAQI
3rd Aug 20251810 AMAQI
3rd Aug 20251911 AMAQI
3rd Aug 20251712 PMAQI
3rd Aug 2025161 PMAQI
3rd Aug 2025172 PMAQI
3rd Aug 2025193 PMAQI
3rd Aug 2025214 PMAQI
3rd Aug 2025305 PMAQI
3rd Aug 2025476 PMAQI
3rd Aug 2025227 PMAQI
3rd Aug 2025388 PMAQI
3rd Aug 2025539 PMAQI
3rd Aug 20255610 PMAQI
3rd Aug 20255611 PMAQI
4th Aug 20255512 AMAQI
4th Aug 2025551 AMAQI
4th Aug 2025542 AMAQI
4th Aug 2025533 AMAQI
4th Aug 2025534 AMAQI
4th Aug 2025505 AMAQI
20°C14/31°C
4th Aug 2025486 AMAQI
4th Aug 2025467 AMAQI
4th Aug 2025468 AMAQI
4th Aug 2025449 AMAQI
4th Aug 20254310 AMAQI
4th Aug 20254811 AMAQI
4th Aug 20255212 PMAQI
4th Aug 2025481 PMAQI
4th Aug 2025442 PMAQI
4th Aug 2025473 PMAQI
4th Aug 2025544 PMAQI
4th Aug 2025585 PMAQI
4th Aug 2025566 PMAQI
4th Aug 2025507 PMAQI
4th Aug 2025568 PMAQI
4th Aug 2025589 PMAQI
4th Aug 20255810 PMAQI
4th Aug 20255311 PMAQI
5th Aug 20255012 AMAQI
5th Aug 2025501 AMAQI
5th Aug 2025512 AMAQI
5th Aug 2025493 AMAQI
5th Aug 2025504 AMAQI
5th Aug 2025515 AMAQI
21°C13/32°C
5th Aug 2025496 AMAQI
5th Aug 2025477 AMAQI
5th Aug 2025448 AMAQI
5th Aug 2025469 AMAQI
5th Aug 20254610 AMAQI
5th Aug 20254511 AMAQI
5th Aug 20254212 PMAQI
5th Aug 2025341 PMAQI
5th Aug 2025342 PMAQI
5th Aug 2025353 PMAQI
5th Aug 2025344 PMAQI
5th Aug 2025345 PMAQI
5th Aug 2025336 PMAQI
5th Aug 2025437 PMAQI
5th Aug 2025438 PMAQI
5th Aug 2025389 PMAQI
5th Aug 20254210 PMAQI
5th Aug 20254311 PMAQI
6th Aug 20254412 AMAQI
6th Aug 2025441 AMAQI
6th Aug 2025462 AMAQI
6th Aug 2025443 AMAQI
6th Aug 2025404 AMAQI
6th Aug 2025395 AMAQI
22°C14/33°C
6th Aug 2025406 AMAQI
6th Aug 2025397 AMAQI
6th Aug 2025368 AMAQI
6th Aug 2025349 AMAQI
6th Aug 20253310 AMAQI
6th Aug 20253311 AMAQI
6th Aug 20253612 PMAQI
6th Aug 2025371 PMAQI
6th Aug 2025382 PMAQI
6th Aug 2025363 PMAQI
6th Aug 2025364 PMAQI
6th Aug 2025375 PMAQI
6th Aug 2025386 PMAQI
6th Aug 2025357 PMAQI
6th Aug 2025348 PMAQI
6th Aug 2025329 PMAQI
6th Aug 20253210 PMAQI
6th Aug 20253811 PMAQI
7th Aug 20253412 AMAQI
7th Aug 2025341 AMAQI
7th Aug 2025352 AMAQI
7th Aug 2025333 AMAQI
7th Aug 2025264 AMAQI
7th Aug 2025265 AMAQI
22°C12/32°C
7th Aug 2025296 AMAQI
7th Aug 2025307 AMAQI
7th Aug 2025298 AMAQI
7th Aug 2025359 AMAQI
7th Aug 20253410 AMAQI
7th Aug 20253511 AMAQI
7th Aug 20253412 PMAQI
7th Aug 2025281 PMAQI
7th Aug 2025262 PMAQI
7th Aug 2025293 PMAQI
7th Aug 2025284 PMAQI
7th Aug 2025265 PMAQI
7th Aug 2025266 PMAQI
7th Aug 2025307 PMAQI
7th Aug 2025318 PMAQI
7th Aug 2025339 PMAQI
7th Aug 20253110 PMAQI
7th Aug 20253111 PMAQI
8th Aug 20252912 AMAQI
8th Aug 2025261 AMAQI
8th Aug 2025262 AMAQI
8th Aug 2025273 AMAQI
8th Aug 2025294 AMAQI
23°C15/34°C
6 AM
1 PM
8 PM
1 AM
5 AM
--°C/°C
Day time
Avg. Highest Time
9 AM - 6 PM
24AQI
10 hours / Day
300 hours / Month
Avg. Lowest Time
6 AM - 8 AM
23AQI
3 hours / Day
90 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 9 AM to 6 PM (Avg. 24), while the lowest AQI was between 6 AM to 8 AM (Avg. 23).
Night time
Avg. Highest Time
9 PM - 11 PM
28AQI
3 hours / Day
90 hours / Month
Avg. Lowest Time
4 AM - 5 AM
24AQI
2 hours / Day
60 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 9 PM to 11 PM (Avg. 28), while the lowest AQI was between 4 AM to 5 AM (Avg. 24).
2025 Days Vs Air Quality
San Luis Obispo, 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
San Luis Obispo, 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
40AQI
40AQI
2nd January 2025
37AQI
37AQI
3rd January 2025
35AQI
35AQI
4th January 2025
25AQI
25AQI
5th January 2025
27AQI
27AQI
6th January 2025
29AQI
29AQI
7th January 2025
25AQI
25AQI
8th January 2025
38AQI
38AQI
9th January 2025
39AQI
39AQI
10th January 2025
40AQI
40AQI
11th January 2025
35AQI
35AQI
12th January 2025
27AQI
27AQI
13th January 2025
34AQI
34AQI
14th January 2025
34AQI
34AQI
15th January 2025
38AQI
38AQI
16th January 2025
35AQI
35AQI
17th January 2025
34AQI
34AQI
18th January 2025
40AQI
40AQI
19th January 2025
48AQI
48AQI
20th January 2025
44AQI
44AQI
21st January 2025
40AQI
40AQI
22nd January 2025
45AQI
45AQI
23rd January 2025
44AQI
44AQI
24th January 2025
44AQI
44AQI
25th January 2025
41AQI
41AQI
26th January 2025
29AQI
29AQI
27th January 2025
24AQI
24AQI
28th January 2025
31AQI
31AQI
29th January 2025
34AQI
34AQI
30th January 2025
38AQI
38AQI
31st January 2025
39AQI
39AQI
1st February 2025
32AQI
32AQI
2nd February 2025
24AQI
24AQI
3rd February 2025
24AQI
24AQI
4th February 2025
23AQI
23AQI
5th February 2025
21AQI
21AQI
6th February 2025
23AQI
23AQI
7th February 2025
24AQI
24AQI
8th February 2025
22AQI
22AQI
9th February 2025
30AQI
30AQI
10th February 2025
32AQI
32AQI
11th February 2025
33AQI
33AQI
12th February 2025
22AQI
22AQI
13th February 2025
22AQI
22AQI
14th February 2025
38AQI
38AQI
15th February 2025
38AQI
38AQI
16th February 2025
32AQI
32AQI
17th February 2025
34AQI
34AQI
18th February 2025
31AQI
31AQI
19th February 2025
31AQI
31AQI
20th February 2025
23AQI
23AQI
21st February 2025
28AQI
28AQI
22nd February 2025
39AQI
39AQI
23rd February 2025
41AQI
41AQI
24th February 2025
34AQI
34AQI
25th February 2025
33AQI
33AQI
26th February 2025
40AQI
40AQI
27th February 2025
41AQI
41AQI
28th February 2025
40AQI
40AQI
1st March 2025
36AQI
36AQI
2nd March 2025
33AQI
33AQI
3rd March 2025
32AQI
32AQI
4th March 2025
25AQI
25AQI
5th March 2025
23AQI
23AQI
6th March 2025
22AQI
22AQI
7th March 2025
33AQI
33AQI
8th March 2025
30AQI
30AQI
9th March 2025
27AQI
27AQI
10th March 2025
27AQI
27AQI
11th March 2025
29AQI
29AQI
12th March 2025
30AQI
30AQI
13th March 2025
23AQI
23AQI
14th March 2025
26AQI
26AQI
15th March 2025
45AQI
45AQI
16th March 2025
44AQI
44AQI
17th March 2025
30AQI
30AQI
18th March 2025
36AQI
36AQI
19th March 2025
29AQI
29AQI
20th March 2025
30AQI
30AQI
21st March 2025
38AQI
38AQI
22nd March 2025
39AQI
39AQI
23rd March 2025
34AQI
34AQI
24th March 2025
42AQI
42AQI
25th March 2025
36AQI
36AQI
26th March 2025
21AQI
21AQI
27th March 2025
19AQI
19AQI
28th March 2025
34AQI
34AQI
29th March 2025
26AQI
26AQI
30th March 2025
20AQI
20AQI
31st March 2025
17AQI
17AQI
1st April 2025
22AQI
22AQI
2nd April 2025
28AQI
28AQI
3rd April 2025
31AQI
31AQI
4th April 2025
31AQI
31AQI
5th April 2025
25AQI
25AQI
6th April 2025
28AQI
28AQI
7th April 2025
23AQI
23AQI
8th April 2025
18AQI
18AQI
9th April 2025
29AQI
29AQI
10th April 2025
31AQI
31AQI
11th April 2025
32AQI
32AQI
12th April 2025
44AQI
44AQI
13th April 2025
42AQI
42AQI
14th April 2025
29AQI
29AQI
15th April 2025
40AQI
40AQI
16th April 2025
36AQI
36AQI
17th April 2025
30AQI
30AQI
18th April 2025
26AQI
26AQI
19th April 2025
27AQI
27AQI
20th April 2025
27AQI
27AQI
21st April 2025
28AQI
28AQI
22nd April 2025
29AQI
29AQI
23rd April 2025
31AQI
31AQI
24th April 2025
40AQI
40AQI
25th April 2025
22AQI
22AQI
26th April 2025
15AQI
15AQI
27th April 2025
16AQI
16AQI
28th April 2025
30AQI
30AQI
29th April 2025
28AQI
28AQI
30th April 2025
22AQI
22AQI
1st May 2025
18AQI
18AQI
2nd May 2025
24AQI
24AQI
3rd May 2025
31AQI
31AQI
4th May 2025
43AQI
43AQI
5th May 2025
48AQI
48AQI
6th May 2025
43AQI
43AQI
7th May 2025
48AQI
48AQI
8th May 2025
37AQI
37AQI
9th May 2025
36AQI
36AQI
10th May 2025
47AQI
47AQI
11th May 2025
39AQI
39AQI
12th May 2025
23AQI
23AQI
13th May 2025
26AQI
26AQI
14th May 2025
35AQI
35AQI
15th May 2025
39AQI
39AQI
16th May 2025
36AQI
36AQI
17th May 2025
31AQI
31AQI
18th May 2025
31AQI
31AQI
19th May 2025
47AQI
47AQI
20th May 2025
41AQI
41AQI
21st May 2025
49AQI
49AQI
22nd May 2025
51AQI
51AQI
23rd May 2025
40AQI
40AQI
24th May 2025
34AQI
34AQI
25th May 2025
29AQI
29AQI
26th May 2025
27AQI
27AQI
27th May 2025
21AQI
21AQI
28th May 2025
28AQI
28AQI
29th May 2025
27AQI
27AQI
30th May 2025
23AQI
23AQI
31st May 2025
25AQI
25AQI
1st June 2025
25AQI
25AQI
2nd June 2025
31AQI
31AQI
3rd June 2025
30AQI
30AQI
4th June 2025
35AQI
35AQI
5th June 2025
23AQI
23AQI
6th June 2025
20AQI
20AQI
7th June 2025
27AQI
27AQI
8th June 2025
20AQI
20AQI
9th June 2025
20AQI
20AQI
10th June 2025
23AQI
23AQI
11th June 2025
41AQI
41AQI
12th June 2025
50AQI
50AQI
13th June 2025
48AQI
48AQI
14th June 2025
49AQI
49AQI
15th June 2025
44AQI
44AQI
16th June 2025
47AQI
47AQI
17th June 2025
46AQI
46AQI
18th June 2025
45AQI
45AQI
19th June 2025
47AQI
47AQI
20th June 2025
50AQI
50AQI
21st June 2025
47AQI
47AQI
22nd June 2025
47AQI
47AQI
23rd June 2025
42AQI
42AQI
24th June 2025
28AQI
28AQI
25th June 2025
26AQI
26AQI
26th June 2025
25AQI
25AQI
27th June 2025
29AQI
29AQI
28th June 2025
24AQI
24AQI
29th June 2025
26AQI
26AQI
30th June 2025
23AQI
23AQI
1st July 2025
25AQI
25AQI
2nd July 2025
21AQI
21AQI
3rd July 2025
29AQI
29AQI
4th July 2025
32AQI
32AQI
5th July 2025
52AQI
52AQI
6th July 2025
40AQI
40AQI
7th July 2025
29AQI
29AQI
8th July 2025
22AQI
22AQI
9th July 2025
22AQI
22AQI
10th July 2025
24AQI
24AQI
11th July 2025
28AQI
28AQI
12th July 2025
32AQI
32AQI
13th July 2025
28AQI
28AQI
14th July 2025
22AQI
22AQI
15th July 2025
22AQI
22AQI
16th July 2025
21AQI
21AQI
17th July 2025
21AQI
21AQI
18th July 2025
21AQI
21AQI
19th July 2025
24AQI
24AQI
20th July 2025
24AQI
24AQI
21st July 2025
20AQI
20AQI
22nd July 2025
15AQI
15AQI
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
20AQI
20AQI
29th July 2025
28AQI
28AQI
30th July 2025
33AQI
33AQI
31st July 2025
28AQI
28AQI
1st August 2025
22AQI
22AQI
2nd August 2025
26AQI
26AQI
3rd August 2025
29AQI
29AQI
4th August 2025
52AQI
52AQI
5th August 2025
44AQI
44AQI
6th August 2025
38AQI
38AQI
7th August 2025
31AQI
31AQI
36AQI
31AQI
30AQI
29AQI
35AQI
35AQI
25AQI
35AQI
No. of days
Jan.Feb.Mar.Apr.MayJun.Jul.Aug.Sep.Oct.Nov.Dec.Total Days
202531AQI
31
28
31
30
30
1
30
30
1
6
1
216
3
Highest AQI recorded in
January36AQI
Lowest AQI recorded in
July25AQI
202430AQI
16
1
2
2
12
29
31
31
28
31
29
1
30
1
242
2
Highest AQI recorded in
December35AQI
Lowest AQI recorded in
February9AQI
202326AQI
3
31
34
Highest AQI recorded in
November29AQI
Lowest AQI recorded in
December26AQI
202125AQI
13
13
Highest AQI recorded in
January25AQI
Lowest AQI recorded in
January25AQI
202035AQI
13
20
18
29
1
30
1
24
4
3
18
7
3
2
23
5
2
30
30
1
235
19
8
2
Highest AQI recorded in
September58AQI
Lowest AQI recorded in
May27AQI
Most & Least Polluted Years Over the Last 5 Years
Most Polluted Year Recorded
2020(Avg.)
35AQILeast Polluted Year Recorded
2021(Avg.)
25AQISan Luis Obispo's annual 2025 AQI (31) shows an average percentage change of 9.9% (worsened AQI) compared to previous years: 2020 (35), 2021 (25), 2023 (26), 2024 (30).
