San Leandro, 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 Leandro, California, United States
2021
2022
2023
2024
2025
AQI
.
Days
AQI Trends: Highest and Lowest
Highest AQI recorded on
28th Aug 2021
95AQILowest AQI recorded on
1st Aug 2024
12AQISame Day Analysis (11th August ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 2nd highest AQI at 30 of Good air quality, showing improvement over 2021 on the same day.
Download 2024 Annual Data
World Air Quality Report
Day & Night AQI Trend: 11th Aug - 12th Aug 2025
San Leandro, California, United States
AQI
Day
Night
.
6 AM11th Aug 2025
8 PM
5 AM12th Aug 2025
Day time
Avg. Highest Time
1PM11th Aug
43AQI
Avg. Lowest Time
6AM11th Aug
25AQI
Night time
Avg. Highest Time
10PM11th Aug
34AQI
Avg. Lowest Time
5AM12th Aug
24AQI
In the last 24 hours,
San Leandro's AQI reached its highest point of 43 at 1 PM during the Day, while the lowest point, 24, was recorded at 5 AM during the Night between 11th Aug and 12th Aug 2025.
Day & Night AQI Trend : Jul - Aug 2025
San Leandro, 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 2025326 AMAQI
13th Jul 2025337 AMAQI
13th Jul 2025318 AMAQI
13th Jul 2025269 AMAQI
13th Jul 20252410 AMAQI
13th Jul 20252411 AMAQI
13th Jul 20252612 PMAQI
13th Jul 2025221 PMAQI
13th Jul 2025262 PMAQI
13th Jul 2025293 PMAQI
13th Jul 2025294 PMAQI
13th Jul 2025285 PMAQI
13th Jul 2025286 PMAQI
13th Jul 2025287 PMAQI
13th Jul 2025308 PMAQI
13th Jul 2025289 PMAQI
13th Jul 20252810 PMAQI
13th Jul 20252911 PMAQI
14th Jul 20252812 AMAQI
14th Jul 2025281 AMAQI
14th Jul 2025302 AMAQI
14th Jul 2025293 AMAQI
14th Jul 2025254 AMAQI
14th Jul 2025225 AMAQI
16°C12/24°C
14th Jul 2025186 AMAQI
14th Jul 2025187 AMAQI
14th Jul 2025178 AMAQI
14th Jul 2025189 AMAQI
14th Jul 20252110 AMAQI
14th Jul 20252411 AMAQI
14th Jul 20252412 PMAQI
14th Jul 2025271 PMAQI
14th Jul 2025282 PMAQI
14th Jul 2025253 PMAQI
14th Jul 2025264 PMAQI
14th Jul 2025285 PMAQI
14th Jul 2025296 PMAQI
14th Jul 2025267 PMAQI
14th Jul 2025258 PMAQI
14th Jul 2025249 PMAQI
14th Jul 20252210 PMAQI
14th Jul 20252411 PMAQI
15th Jul 20252412 AMAQI
15th Jul 2025231 AMAQI
15th Jul 2025222 AMAQI
15th Jul 2025223 AMAQI
15th Jul 2025164 AMAQI
15th Jul 2025135 AMAQI
17°C11/25°C
15th Jul 2025146 AMAQI
15th Jul 2025147 AMAQI
15th Jul 2025148 AMAQI
15th Jul 2025149 AMAQI
15th Jul 20251510 AMAQI
15th Jul 20251611 AMAQI
15th Jul 20251612 PMAQI
15th Jul 2025171 PMAQI
15th Jul 2025182 PMAQI
15th Jul 2025173 PMAQI
15th Jul 2025184 PMAQI
15th Jul 2025185 PMAQI
15th Jul 2025206 PMAQI
15th Jul 2025187 PMAQI
15th Jul 2025188 PMAQI
15th Jul 2025209 PMAQI
15th Jul 20252210 PMAQI
15th Jul 20252411 PMAQI
16th Jul 20252412 AMAQI
16th Jul 2025241 AMAQI
16th Jul 2025252 AMAQI
16th Jul 2025253 AMAQI
16th Jul 2025284 AMAQI
16th Jul 2025205 AMAQI
16°C12/21°C
16th Jul 2025176 AMAQI
16th Jul 2025177 AMAQI
16th Jul 2025188 AMAQI
16th Jul 2025169 AMAQI
16th Jul 20251710 AMAQI
16th Jul 20251811 AMAQI
16th Jul 20251812 PMAQI
16th Jul 2025181 PMAQI
16th Jul 2025172 PMAQI
16th Jul 2025183 PMAQI
16th Jul 2025204 PMAQI
16th Jul 2025205 PMAQI
16th Jul 2025226 PMAQI
16th Jul 2025207 PMAQI
16th Jul 2025218 PMAQI
16th Jul 2025209 PMAQI
16th Jul 20251910 PMAQI
16th Jul 20252111 PMAQI
17th Jul 20252112 AMAQI
17th Jul 2025201 AMAQI
17th Jul 2025182 AMAQI
17th Jul 2025183 AMAQI
17th Jul 2025154 AMAQI
17th Jul 2025165 AMAQI
16°C12/21°C
17th Jul 2025166 AMAQI
17th Jul 2025177 AMAQI
17th Jul 2025178 AMAQI
17th Jul 2025179 AMAQI
17th Jul 20251810 AMAQI
17th Jul 20251811 AMAQI
17th Jul 20251812 PMAQI
17th Jul 2025181 PMAQI
17th Jul 2025192 PMAQI
17th Jul 2025183 PMAQI
17th Jul 2025204 PMAQI
17th Jul 2025195 PMAQI
17th Jul 2025186 PMAQI
17th Jul 2025187 PMAQI
17th Jul 2025188 PMAQI
17th Jul 2025199 PMAQI
17th Jul 20251810 PMAQI
17th Jul 20251911 PMAQI
18th Jul 20252012 AMAQI
18th Jul 2025181 AMAQI
18th Jul 2025182 AMAQI
18th Jul 2025173 AMAQI
18th Jul 2025174 AMAQI
18th Jul 2025145 AMAQI
16°C13/23°C
18th Jul 2025156 AMAQI
18th Jul 2025207 AMAQI
18th Jul 2025208 AMAQI
18th Jul 2025209 AMAQI
18th Jul 20252210 AMAQI
18th Jul 20252211 AMAQI
18th Jul 20252412 PMAQI
18th Jul 2025211 PMAQI
18th Jul 2025202 PMAQI
18th Jul 2025223 PMAQI
18th Jul 2025214 PMAQI
18th Jul 2025195 PMAQI
18th Jul 2025176 PMAQI
18th Jul 2025187 PMAQI
18th Jul 2025208 PMAQI
18th Jul 2025189 PMAQI
18th Jul 20251710 PMAQI
18th Jul 20252111 PMAQI
19th Jul 20252012 AMAQI
19th Jul 2025221 AMAQI
19th Jul 2025222 AMAQI
19th Jul 2025233 AMAQI
19th Jul 2025234 AMAQI
19th Jul 2025215 AMAQI
16°C13/22°C
19th Jul 2025226 AMAQI
19th Jul 2025217 AMAQI
19th Jul 2025188 AMAQI
19th Jul 2025229 AMAQI
19th Jul 20252110 AMAQI
19th Jul 20252111 AMAQI
19th Jul 20252212 PMAQI
19th Jul 2025211 PMAQI
19th Jul 2025222 PMAQI
19th Jul 2025223 PMAQI
19th Jul 2025224 PMAQI
19th Jul 2025205 PMAQI
19th Jul 2025216 PMAQI
19th Jul 2025217 PMAQI
19th Jul 2025218 PMAQI
19th Jul 2025229 PMAQI
19th Jul 20252110 PMAQI
19th Jul 20252111 PMAQI
20th Jul 20252012 AMAQI
20th Jul 2025211 AMAQI
20th Jul 2025222 AMAQI
20th Jul 2025233 AMAQI
20th Jul 2025224 AMAQI
20th Jul 2025225 AMAQI
15°C12/21°C
20th Jul 2025236 AMAQI
20th Jul 2025207 AMAQI
20th Jul 2025178 AMAQI
20th Jul 2025179 AMAQI
20th Jul 20251610 AMAQI
20th Jul 20251611 AMAQI
20th Jul 20251612 PMAQI
20th Jul 2025171 PMAQI
20th Jul 2025182 PMAQI
20th Jul 2025213 PMAQI
20th Jul 2025234 PMAQI
20th Jul 2025235 PMAQI
20th Jul 2025246 PMAQI
20th Jul 2025227 PMAQI
20th Jul 2025238 PMAQI
20th Jul 2025269 PMAQI
20th Jul 20252610 PMAQI
20th Jul 20252711 PMAQI
21st Jul 20253012 AMAQI
21st Jul 2025281 AMAQI
21st Jul 2025272 AMAQI
21st Jul 2025273 AMAQI
21st Jul 2025244 AMAQI
21st Jul 2025285 AMAQI
15°C12/19°C
21st Jul 2025286 AMAQI
21st Jul 2025237 AMAQI
21st Jul 2025208 AMAQI
21st Jul 2025209 AMAQI
21st Jul 20251810 AMAQI
21st Jul 20251611 AMAQI
21st Jul 20251712 PMAQI
21st Jul 2025161 PMAQI
21st Jul 2025182 PMAQI
21st Jul 2025203 PMAQI
21st Jul 2025204 PMAQI
21st Jul 2025205 PMAQI
21st Jul 2025216 PMAQI
21st Jul 2025237 PMAQI
21st Jul 2025228 PMAQI
21st Jul 2025229 PMAQI
21st Jul 20252010 PMAQI
21st Jul 20252111 PMAQI
22nd Jul 20252012 AMAQI
22nd Jul 2025181 AMAQI
22nd Jul 2025182 AMAQI
22nd Jul 2025183 AMAQI
22nd Jul 2025124 AMAQI
22nd Jul 2025115 AMAQI
15°C12/17°C
22nd Jul 2025126 AMAQI
22nd Jul 2025127 AMAQI
22nd Jul 2025138 AMAQI
22nd Jul 2025139 AMAQI
22nd Jul 20251410 AMAQI
22nd Jul 20251411 AMAQI
22nd Jul 20251612 PMAQI
22nd Jul 2025151 PMAQI
22nd Jul 2025142 PMAQI
22nd Jul 2025143 PMAQI
22nd Jul 2025144 PMAQI
22nd Jul 2025145 PMAQI
22nd Jul 2025146 PMAQI
22nd Jul 2025167 PMAQI
22nd Jul 2025168 PMAQI
22nd Jul 2025169 PMAQI
22nd Jul 20251610 PMAQI
22nd Jul 20251611 PMAQI
23rd Jul 20251612 AMAQI
23rd Jul 2025151 AMAQI
23rd Jul 2025152 AMAQI
23rd Jul 2025153 AMAQI
23rd Jul 2025154 AMAQI
23rd Jul 2025165 AMAQI
16°C13/20°C
23rd Jul 2025146 AMAQI
23rd Jul 2025147 AMAQI
23rd Jul 2025168 AMAQI
23rd Jul 2025169 AMAQI
23rd Jul 20251610 AMAQI
23rd Jul 20251611 AMAQI
23rd Jul 20251612 PMAQI
23rd Jul 2025161 PMAQI
23rd Jul 2025162 PMAQI
23rd Jul 2025153 PMAQI
23rd Jul 2025164 PMAQI
23rd Jul 2025155 PMAQI
23rd Jul 2025146 PMAQI
23rd Jul 2025167 PMAQI
23rd Jul 2025168 PMAQI
23rd Jul 2025159 PMAQI
23rd Jul 20251510 PMAQI
23rd Jul 20251511 PMAQI
24th Jul 20251512 AMAQI
24th Jul 2025141 AMAQI
24th Jul 2025152 AMAQI
24th Jul 2025163 AMAQI
24th Jul 2025134 AMAQI
24th Jul 2025135 AMAQI
16°C13/20°C
24th Jul 2025136 AMAQI
24th Jul 2025147 AMAQI
24th Jul 2025148 AMAQI
24th Jul 2025149 AMAQI
24th Jul 20251410 AMAQI
24th Jul 20251411 AMAQI
24th Jul 20251512 PMAQI
24th Jul 2025141 PMAQI
24th Jul 2025152 PMAQI
24th Jul 2025153 PMAQI
24th Jul 2025164 PMAQI
24th Jul 2025155 PMAQI
24th Jul 2025156 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 2025135 AMAQI
16°C13/21°C
25th Jul 2025126 AMAQI
25th Jul 2025147 AMAQI
25th Jul 2025148 AMAQI
25th Jul 2025149 AMAQI
25th Jul 20251410 AMAQI
25th Jul 20251411 AMAQI
25th Jul 20251412 PMAQI
25th Jul 2025141 PMAQI
25th Jul 2025142 PMAQI
25th Jul 2025153 PMAQI
25th Jul 2025154 PMAQI
25th Jul 2025155 PMAQI
25th Jul 2025156 PMAQI
25th Jul 2025167 PMAQI
25th Jul 2025168 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 2025153 AMAQI
26th Jul 2025164 AMAQI
26th Jul 2025165 AMAQI
16°C12/20°C
26th Jul 2025146 AMAQI
26th Jul 2025127 AMAQI
26th Jul 2025138 AMAQI
26th Jul 2025199 AMAQI
26th Jul 20251710 AMAQI
26th Jul 20251811 AMAQI
26th Jul 20251412 PMAQI
26th Jul 2025141 PMAQI
26th Jul 2025142 PMAQI
26th Jul 2025153 PMAQI
26th Jul 2025144 PMAQI
26th Jul 2025145 PMAQI
26th Jul 2025156 PMAQI
26th Jul 2025167 PMAQI
26th Jul 2025168 PMAQI
26th Jul 2025159 PMAQI
26th Jul 20251410 PMAQI
26th Jul 20251511 PMAQI
27th Jul 20251612 AMAQI
27th Jul 2025161 AMAQI
27th Jul 2025162 AMAQI
27th Jul 2025163 AMAQI
27th Jul 2025154 AMAQI
27th Jul 2025145 AMAQI
15°C13/19°C
27th Jul 2025156 AMAQI
27th Jul 2025157 AMAQI
27th Jul 2025148 AMAQI
27th Jul 2025139 AMAQI
27th Jul 20251410 AMAQI
27th Jul 20251411 AMAQI
27th Jul 20251512 PMAQI
27th Jul 2025141 PMAQI
27th Jul 2025142 PMAQI
27th Jul 2025163 PMAQI
27th Jul 2025154 PMAQI
27th Jul 2025155 PMAQI
27th Jul 2025166 PMAQI
27th Jul 2025167 PMAQI
27th Jul 2025168 PMAQI
27th Jul 2025189 PMAQI
27th Jul 20251910 PMAQI
27th Jul 20251911 PMAQI
28th Jul 20251912 AMAQI
28th Jul 2025181 AMAQI
28th Jul 2025162 AMAQI
28th Jul 2025173 AMAQI
28th Jul 2025164 AMAQI
28th Jul 2025145 AMAQI
15°C13/19°C
28th Jul 2025176 AMAQI
28th Jul 2025177 AMAQI
28th Jul 2025178 AMAQI
28th Jul 2025169 AMAQI
28th Jul 20251610 AMAQI
28th Jul 20252311 AMAQI
28th Jul 20252412 PMAQI
28th Jul 2025221 PMAQI
28th Jul 2025192 PMAQI
28th Jul 2025183 PMAQI
28th Jul 2025204 PMAQI
28th Jul 2025225 PMAQI
28th Jul 2025226 PMAQI
28th Jul 2025207 PMAQI
28th Jul 2025208 PMAQI
28th Jul 2025219 PMAQI
28th Jul 20252210 PMAQI
28th Jul 20252311 PMAQI
29th Jul 20252212 AMAQI
29th Jul 2025211 AMAQI
29th Jul 2025222 AMAQI
29th Jul 2025223 AMAQI
29th Jul 2025294 AMAQI
29th Jul 2025265 AMAQI
17°C12/23°C
29th Jul 2025296 AMAQI
29th Jul 2025277 AMAQI
29th Jul 2025258 AMAQI
29th Jul 2025269 AMAQI
29th Jul 20252610 AMAQI
29th Jul 20252711 AMAQI
29th Jul 20252812 PMAQI
29th Jul 2025291 PMAQI
29th Jul 2025262 PMAQI
29th Jul 2025263 PMAQI
29th Jul 2025284 PMAQI
29th Jul 2025285 PMAQI
29th Jul 2025276 PMAQI
29th Jul 2025307 PMAQI
29th Jul 2025278 PMAQI
29th Jul 2025299 PMAQI
29th Jul 20252610 PMAQI
29th Jul 20252611 PMAQI
30th Jul 20252712 AMAQI
30th Jul 2025271 AMAQI
30th Jul 2025282 AMAQI
30th Jul 2025273 AMAQI
30th Jul 2025284 AMAQI
30th Jul 2025275 AMAQI
16°C12/22°C
30th Jul 2025286 AMAQI
30th Jul 2025287 AMAQI
30th Jul 2025248 AMAQI
30th Jul 2025229 AMAQI
30th Jul 20252310 AMAQI
30th Jul 20252111 AMAQI
30th Jul 20252212 PMAQI
30th Jul 2025241 PMAQI
30th Jul 2025272 PMAQI
30th Jul 2025273 PMAQI
30th Jul 2025274 PMAQI
30th Jul 2025275 PMAQI
30th Jul 2025276 PMAQI
30th Jul 2025277 PMAQI
30th Jul 2025278 PMAQI
30th Jul 2025269 PMAQI
30th Jul 20252810 PMAQI
30th Jul 20252811 PMAQI
31st Jul 20252712 AMAQI
31st Jul 2025251 AMAQI
31st Jul 2025262 AMAQI
31st Jul 2025263 AMAQI
31st Jul 2025224 AMAQI
31st Jul 2025225 AMAQI
15°C12/19°C
31st Jul 2025246 AMAQI
31st Jul 2025237 AMAQI
31st Jul 2025228 AMAQI
31st Jul 2025199 AMAQI
31st Jul 20251810 AMAQI
31st Jul 20251811 AMAQI
31st Jul 20251812 PMAQI
31st Jul 2025181 PMAQI
31st Jul 2025242 PMAQI
31st Jul 2025263 PMAQI
31st Jul 2025314 PMAQI
31st Jul 2025315 PMAQI
31st Jul 2025296 PMAQI
31st Jul 2025267 PMAQI
31st Jul 2025328 PMAQI
31st Jul 2025329 PMAQI
31st Jul 20252910 PMAQI
31st Jul 20253011 PMAQI
1st Aug 20253212 AMAQI
1st Aug 2025281 AMAQI
1st Aug 2025322 AMAQI
1st Aug 2025263 AMAQI
1st Aug 2025244 AMAQI
1st Aug 2025225 AMAQI
17°C13/24°C
1st Aug 2025186 AMAQI
1st Aug 2025187 AMAQI
1st Aug 2025188 AMAQI
1st Aug 2025199 AMAQI
1st Aug 20251810 AMAQI
1st Aug 20252011 AMAQI
1st Aug 20251912 PMAQI
1st Aug 2025191 PMAQI
1st Aug 2025202 PMAQI
1st Aug 2025243 PMAQI
1st Aug 2025244 PMAQI
1st Aug 2025255 PMAQI
1st Aug 2025286 PMAQI
1st Aug 2025217 PMAQI
1st Aug 2025258 PMAQI
1st Aug 2025249 PMAQI
1st Aug 20252710 PMAQI
1st Aug 20253111 PMAQI
2nd Aug 20253112 AMAQI
2nd Aug 2025361 AMAQI
2nd Aug 2025362 AMAQI
2nd Aug 2025333 AMAQI
2nd Aug 2025284 AMAQI
2nd Aug 2025225 AMAQI
16°C13/22°C
2nd Aug 2025226 AMAQI
2nd Aug 2025227 AMAQI
2nd Aug 2025198 AMAQI
2nd Aug 2025189 AMAQI
2nd Aug 20251710 AMAQI
2nd Aug 20251811 AMAQI
2nd Aug 20251812 PMAQI
2nd Aug 2025191 PMAQI
2nd Aug 2025152 PMAQI
2nd Aug 2025183 PMAQI
2nd Aug 2025204 PMAQI
2nd Aug 2025225 PMAQI
2nd Aug 2025226 PMAQI
2nd Aug 2025227 PMAQI
2nd Aug 2025208 PMAQI
2nd Aug 2025199 PMAQI
2nd Aug 20252110 PMAQI
2nd Aug 20252211 PMAQI
3rd Aug 20252212 AMAQI
3rd Aug 2025261 AMAQI
3rd Aug 2025302 AMAQI
3rd Aug 2025343 AMAQI
3rd Aug 2025294 AMAQI
3rd Aug 2025235 AMAQI
16°C12/23°C
3rd Aug 2025236 AMAQI
3rd Aug 2025327 AMAQI
3rd Aug 2025418 AMAQI
3rd Aug 2025429 AMAQI
3rd Aug 20254610 AMAQI
3rd Aug 20254311 AMAQI
3rd Aug 20254812 PMAQI
3rd Aug 2025481 PMAQI
3rd Aug 2025502 PMAQI
3rd Aug 2025503 PMAQI
3rd Aug 2025544 PMAQI
3rd Aug 2025545 PMAQI
3rd Aug 2025526 PMAQI
3rd Aug 2025417 PMAQI
3rd Aug 2025478 PMAQI
3rd Aug 2025469 PMAQI
3rd Aug 20254410 PMAQI
3rd Aug 20254011 PMAQI
4th Aug 20254412 AMAQI
4th Aug 2025461 AMAQI
4th Aug 2025442 AMAQI
4th Aug 2025403 AMAQI
4th Aug 2025394 AMAQI
4th Aug 2025415 AMAQI
16°C12/24°C
4th Aug 2025406 AMAQI
4th Aug 2025407 AMAQI
4th Aug 2025378 AMAQI
4th Aug 2025449 AMAQI
4th Aug 20254610 AMAQI
4th Aug 20254611 AMAQI
4th Aug 20254412 PMAQI
4th Aug 2025431 PMAQI
4th Aug 2025532 PMAQI
4th Aug 2025523 PMAQI
4th Aug 2025444 PMAQI
4th Aug 2025395 PMAQI
4th Aug 2025406 PMAQI
4th Aug 2025427 PMAQI
4th Aug 2025398 PMAQI
4th Aug 2025419 PMAQI
4th Aug 20254210 PMAQI
4th Aug 20253911 PMAQI
5th Aug 20253512 AMAQI
5th Aug 2025351 AMAQI
5th Aug 2025342 AMAQI
5th Aug 2025343 AMAQI
5th Aug 2025324 AMAQI
5th Aug 2025285 AMAQI
17°C11/24°C
5th Aug 2025306 AMAQI
5th Aug 2025287 AMAQI
5th Aug 2025358 AMAQI
5th Aug 2025329 AMAQI
5th Aug 20253210 AMAQI
5th Aug 20253611 AMAQI
5th Aug 20253712 PMAQI
5th Aug 2025351 PMAQI
5th Aug 2025332 PMAQI
5th Aug 2025333 PMAQI
5th Aug 2025374 PMAQI
5th Aug 2025385 PMAQI
5th Aug 2025386 PMAQI
5th Aug 2025357 PMAQI
5th Aug 2025348 PMAQI
5th Aug 2025419 PMAQI
5th Aug 20254010 PMAQI
5th Aug 20253411 PMAQI
6th Aug 20253212 AMAQI
6th Aug 2025351 AMAQI
6th Aug 2025382 AMAQI
6th Aug 2025383 AMAQI
6th Aug 2025354 AMAQI
6th Aug 2025345 AMAQI
15°C11/23°C
6th Aug 2025346 AMAQI
6th Aug 2025347 AMAQI
6th Aug 2025328 AMAQI
6th Aug 2025339 AMAQI
6th Aug 20253310 AMAQI
6th Aug 20253311 AMAQI
6th Aug 20253612 PMAQI
6th Aug 2025381 PMAQI
6th Aug 2025402 PMAQI
6th Aug 2025503 PMAQI
6th Aug 2025524 PMAQI
6th Aug 2025555 PMAQI
6th Aug 2025526 PMAQI
6th Aug 2025367 PMAQI
6th Aug 2025438 PMAQI
6th Aug 2025499 PMAQI
6th Aug 20254210 PMAQI
6th Aug 20254411 PMAQI
7th Aug 20254012 AMAQI
7th Aug 2025341 AMAQI
7th Aug 2025362 AMAQI
7th Aug 2025373 AMAQI
7th Aug 2025404 AMAQI
7th Aug 2025335 AMAQI
19°C11/30°C
7th Aug 2025336 AMAQI
7th Aug 2025327 AMAQI
7th Aug 2025328 AMAQI
7th Aug 2025319 AMAQI
7th Aug 20252710 AMAQI
7th Aug 20252911 AMAQI
7th Aug 20252612 PMAQI
7th Aug 2025231 PMAQI
7th Aug 2025252 PMAQI
7th Aug 2025283 PMAQI
7th Aug 2025284 PMAQI
7th Aug 2025295 PMAQI
7th Aug 2025296 PMAQI
7th Aug 2025327 PMAQI
7th Aug 2025338 PMAQI
7th Aug 2025319 PMAQI
7th Aug 20253010 PMAQI
7th Aug 20252911 PMAQI
8th Aug 20253012 AMAQI
8th Aug 2025341 AMAQI
8th Aug 2025362 AMAQI
8th Aug 2025373 AMAQI
8th Aug 2025354 AMAQI
8th Aug 2025425 AMAQI
17°C12/25°C
8th Aug 2025346 AMAQI
8th Aug 2025347 AMAQI
8th Aug 2025348 AMAQI
8th Aug 2025349 AMAQI
8th Aug 20253610 AMAQI
8th Aug 20254011 AMAQI
8th Aug 20254612 PMAQI
8th Aug 2025461 PMAQI
8th Aug 2025442 PMAQI
8th Aug 2025403 PMAQI
8th Aug 2025424 PMAQI
8th Aug 2025425 PMAQI
8th Aug 2025406 PMAQI
8th Aug 2025387 PMAQI
8th Aug 2025408 PMAQI
8th Aug 2025409 PMAQI
8th Aug 20253910 PMAQI
8th Aug 20253911 PMAQI
9th Aug 20253812 AMAQI
9th Aug 2025401 AMAQI
9th Aug 2025442 AMAQI
9th Aug 2025463 AMAQI
9th Aug 2025444 AMAQI
9th Aug 2025455 AMAQI
19°C12/30°C
9th Aug 2025446 AMAQI
9th Aug 2025437 AMAQI
9th Aug 2025388 AMAQI
9th Aug 2025339 AMAQI
9th Aug 20252910 AMAQI
9th Aug 20252711 AMAQI
9th Aug 20252812 PMAQI
9th Aug 2025321 PMAQI
9th Aug 2025362 PMAQI
9th Aug 2025373 PMAQI
9th Aug 2025384 PMAQI
9th Aug 2025385 PMAQI
9th Aug 2025386 PMAQI
9th Aug 2025377 PMAQI
9th Aug 2025378 PMAQI
9th Aug 2025359 PMAQI
9th Aug 20253810 PMAQI
9th Aug 20253911 PMAQI
10th Aug 20253712 AMAQI
10th Aug 2025361 AMAQI
10th Aug 2025362 AMAQI
10th Aug 2025363 AMAQI
10th Aug 2025374 AMAQI
10th Aug 2025365 AMAQI
19°C13/26°C
10th Aug 2025326 AMAQI
10th Aug 2025387 AMAQI
10th Aug 2025288 AMAQI
10th Aug 2025329 AMAQI
10th Aug 20253210 AMAQI
10th Aug 20253011 AMAQI
10th Aug 20253112 PMAQI
10th Aug 2025281 PMAQI
10th Aug 2025292 PMAQI
10th Aug 2025323 PMAQI
10th Aug 2025314 PMAQI
10th Aug 2025325 PMAQI
10th Aug 2025316 PMAQI
10th Aug 2025317 PMAQI
10th Aug 2025318 PMAQI
10th Aug 2025319 PMAQI
10th Aug 20253110 PMAQI
10th Aug 20253111 PMAQI
11th Aug 20253012 AMAQI
11th Aug 2025271 AMAQI
11th Aug 2025242 AMAQI
11th Aug 2025233 AMAQI
11th Aug 2025274 AMAQI
11th Aug 2025245 AMAQI
18°C13/28°C
11th Aug 2025256 AMAQI
11th Aug 2025327 AMAQI
11th Aug 2025308 AMAQI
11th Aug 2025339 AMAQI
11th Aug 20252910 AMAQI
11th Aug 20253311 AMAQI
11th Aug 20253912 PMAQI
11th Aug 2025431 PMAQI
11th Aug 2025402 PMAQI
11th Aug 2025383 PMAQI
11th Aug 2025354 PMAQI
11th Aug 2025335 PMAQI
11th Aug 2025366 PMAQI
11th Aug 2025277 PMAQI
11th Aug 2025308 PMAQI
11th Aug 2025329 PMAQI
11th Aug 20253410 PMAQI
11th Aug 20252911 PMAQI
12th Aug 20252912 AMAQI
12th Aug 2025261 AMAQI
12th Aug 2025252 AMAQI
12th Aug 2025263 AMAQI
12th Aug 2025284 AMAQI
12th Aug 2025245 AMAQI
15°C11/22°C
12th Aug 2025286 AMAQI
6 AM12th Aug 2025267 AMAQI
12th Aug 2025248 AMAQI
12th Aug 2025269 AMAQI
12th Aug 20252410 AMAQI
1 PM
8 PM
1 AM
5 AM
--°C/°C
Day time
Avg. Highest Time
6 AM - 6 PM
25AQI
13 hours / Day
390 hours / Month
Avg. Lowest Time
6 AM - 8 PM
25AQI
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. 25), while the lowest AQI was between 6 AM to 8 PM (Avg. 25).
Night time
Avg. Highest Time
12 AM - 11 PM
26AQI
9 hours / Day
270 hours / Month
Avg. Lowest Time
12 AM - 5 AM
26AQI
6 hours / Day
180 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 12 AM to 11 PM (Avg. 26), while the lowest AQI was between 12 AM to 5 AM (Avg. 26).
2025 Days Vs Air Quality
San Leandro, California, United States
2025
97%
217
3%
6
Total number of days with different AQI categories in last 224 days in 2025 (141 days remaining)
Good
217 DaysModerate
6 DaysPoor
0 DaysUnhealthy
0 DaysSevere
0 DaysHazardous
0 DaysUnder WHO’s Safe Air Quality Limits: 97%
Health Risk Level:
Very Low
In 2025, 97% 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
San Leandro, 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
60AQI
60AQI
2nd January 2025
44AQI
44AQI
3rd January 2025
42AQI
42AQI
4th January 2025
35AQI
35AQI
5th January 2025
39AQI
39AQI
6th January 2025
43AQI
43AQI
7th January 2025
28AQI
28AQI
8th January 2025
26AQI
26AQI
9th January 2025
38AQI
38AQI
10th January 2025
40AQI
40AQI
11th January 2025
32AQI
32AQI
12th January 2025
29AQI
29AQI
13th January 2025
30AQI
30AQI
14th January 2025
31AQI
31AQI
15th January 2025
48AQI
48AQI
16th January 2025
57AQI
57AQI
17th January 2025
47AQI
47AQI
18th January 2025
47AQI
47AQI
19th January 2025
54AQI
54AQI
20th January 2025
36AQI
36AQI
21st January 2025
37AQI
37AQI
22nd January 2025
47AQI
47AQI
23rd January 2025
46AQI
46AQI
24th January 2025
60AQI
60AQI
25th January 2025
45AQI
45AQI
26th January 2025
34AQI
34AQI
27th January 2025
38AQI
38AQI
28th January 2025
38AQI
38AQI
29th January 2025
33AQI
33AQI
30th January 2025
34AQI
34AQI
31st January 2025
32AQI
32AQI
1st February 2025
29AQI
29AQI
2nd February 2025
22AQI
22AQI
3rd February 2025
22AQI
22AQI
4th February 2025
22AQI
22AQI
5th February 2025
23AQI
23AQI
6th February 2025
22AQI
22AQI
7th February 2025
26AQI
26AQI
8th February 2025
25AQI
25AQI
9th February 2025
28AQI
28AQI
10th February 2025
26AQI
26AQI
11th February 2025
28AQI
28AQI
12th February 2025
24AQI
24AQI
13th February 2025
26AQI
26AQI
14th February 2025
31AQI
31AQI
15th February 2025
32AQI
32AQI
16th February 2025
32AQI
32AQI
17th February 2025
24AQI
24AQI
18th February 2025
24AQI
24AQI
19th February 2025
27AQI
27AQI
20th February 2025
27AQI
27AQI
21st February 2025
27AQI
27AQI
22nd February 2025
32AQI
32AQI
23rd February 2025
27AQI
27AQI
24th February 2025
23AQI
23AQI
25th February 2025
23AQI
23AQI
26th February 2025
27AQI
27AQI
27th February 2025
33AQI
33AQI
28th February 2025
46AQI
46AQI
1st March 2025
35AQI
35AQI
2nd March 2025
31AQI
31AQI
3rd March 2025
25AQI
25AQI
4th March 2025
24AQI
24AQI
5th March 2025
25AQI
25AQI
6th March 2025
28AQI
28AQI
7th March 2025
28AQI
28AQI
8th March 2025
29AQI
29AQI
9th March 2025
35AQI
35AQI
10th March 2025
28AQI
28AQI
11th March 2025
28AQI
28AQI
12th March 2025
28AQI
28AQI
13th March 2025
20AQI
20AQI
14th March 2025
21AQI
21AQI
15th March 2025
48AQI
48AQI
16th March 2025
38AQI
38AQI
17th March 2025
17AQI
17AQI
18th March 2025
17AQI
17AQI
19th March 2025
22AQI
22AQI
20th March 2025
16AQI
16AQI
21st March 2025
26AQI
26AQI
22nd March 2025
22AQI
22AQI
23rd March 2025
25AQI
25AQI
24th March 2025
21AQI
21AQI
25th March 2025
30AQI
30AQI
26th March 2025
24AQI
24AQI
27th March 2025
19AQI
19AQI
28th March 2025
22AQI
22AQI
29th March 2025
18AQI
18AQI
30th March 2025
19AQI
19AQI
31st March 2025
19AQI
19AQI
1st April 2025
20AQI
20AQI
2nd April 2025
19AQI
19AQI
3rd April 2025
20AQI
20AQI
4th April 2025
21AQI
21AQI
5th April 2025
24AQI
24AQI
6th April 2025
20AQI
20AQI
7th April 2025
16AQI
16AQI
8th April 2025
19AQI
19AQI
9th April 2025
24AQI
24AQI
10th April 2025
23AQI
23AQI
11th April 2025
19AQI
19AQI
12th April 2025
32AQI
32AQI
13th April 2025
39AQI
39AQI
14th April 2025
35AQI
35AQI
15th April 2025
31AQI
31AQI
16th April 2025
31AQI
31AQI
17th April 2025
22AQI
22AQI
18th April 2025
24AQI
24AQI
19th April 2025
32AQI
32AQI
20th April 2025
31AQI
31AQI
21st April 2025
40AQI
40AQI
22nd April 2025
36AQI
36AQI
23rd April 2025
47AQI
47AQI
24th April 2025
33AQI
33AQI
25th April 2025
19AQI
19AQI
26th April 2025
16AQI
16AQI
27th April 2025
23AQI
23AQI
28th April 2025
27AQI
27AQI
29th April 2025
34AQI
34AQI
30th April 2025
36AQI
36AQI
1st May 2025
34AQI
34AQI
2nd May 2025
27AQI
27AQI
3rd May 2025
22AQI
22AQI
4th May 2025
34AQI
34AQI
5th May 2025
31AQI
31AQI
6th May 2025
45AQI
45AQI
7th May 2025
38AQI
38AQI
8th May 2025
28AQI
28AQI
9th May 2025
35AQI
35AQI
10th May 2025
37AQI
37AQI
11th May 2025
25AQI
25AQI
12th May 2025
17AQI
17AQI
13th May 2025
17AQI
17AQI
14th May 2025
33AQI
33AQI
15th May 2025
37AQI
37AQI
16th May 2025
40AQI
40AQI
17th May 2025
25AQI
25AQI
18th May 2025
29AQI
29AQI
19th May 2025
33AQI
33AQI
20th May 2025
28AQI
28AQI
21st May 2025
39AQI
39AQI
22nd May 2025
29AQI
29AQI
23rd May 2025
23AQI
23AQI
24th May 2025
25AQI
25AQI
25th May 2025
22AQI
22AQI
26th May 2025
21AQI
21AQI
27th May 2025
25AQI
25AQI
28th May 2025
25AQI
25AQI
29th May 2025
22AQI
22AQI
30th May 2025
30AQI
30AQI
31st May 2025
49AQI
49AQI
1st June 2025
52AQI
52AQI
2nd June 2025
46AQI
46AQI
3rd June 2025
37AQI
37AQI
4th June 2025
54AQI
54AQI
5th June 2025
37AQI
37AQI
6th June 2025
29AQI
29AQI
7th June 2025
26AQI
26AQI
8th June 2025
19AQI
19AQI
9th June 2025
18AQI
18AQI
10th June 2025
20AQI
20AQI
11th June 2025
43AQI
43AQI
12th June 2025
50AQI
50AQI
13th June 2025
50AQI
50AQI
14th June 2025
48AQI
48AQI
15th June 2025
49AQI
49AQI
16th June 2025
41AQI
41AQI
17th June 2025
37AQI
37AQI
18th June 2025
36AQI
36AQI
19th June 2025
47AQI
47AQI
20th June 2025
42AQI
42AQI
21st June 2025
43AQI
43AQI
22nd June 2025
43AQI
43AQI
23rd June 2025
39AQI
39AQI
24th June 2025
26AQI
26AQI
25th June 2025
21AQI
21AQI
26th June 2025
27AQI
27AQI
27th June 2025
33AQI
33AQI
28th June 2025
39AQI
39AQI
29th June 2025
31AQI
31AQI
30th June 2025
25AQI
25AQI
1st July 2025
25AQI
25AQI
2nd July 2025
23AQI
23AQI
3rd July 2025
35AQI
35AQI
4th July 2025
33AQI
33AQI
5th July 2025
35AQI
35AQI
6th July 2025
33AQI
33AQI
7th July 2025
26AQI
26AQI
8th July 2025
21AQI
21AQI
9th July 2025
18AQI
18AQI
10th July 2025
23AQI
23AQI
11th July 2025
34AQI
34AQI
12th July 2025
36AQI
36AQI
13th July 2025
30AQI
30AQI
14th July 2025
25AQI
25AQI
15th July 2025
18AQI
18AQI
16th July 2025
21AQI
21AQI
17th July 2025
18AQI
18AQI
18th July 2025
19AQI
19AQI
19th July 2025
21AQI
21AQI
20th July 2025
21AQI
21AQI
21st July 2025
23AQI
23AQI
22nd July 2025
15AQI
15AQI
23rd July 2025
15AQI
15AQI
24th July 2025
15AQI
15AQI
25th July 2025
15AQI
15AQI
26th July 2025
15AQI
15AQI
27th July 2025
16AQI
16AQI
28th July 2025
19AQI
19AQI
29th July 2025
26AQI
26AQI
30th July 2025
26AQI
26AQI
31st July 2025
25AQI
25AQI
1st August 2025
24AQI
24AQI
2nd August 2025
23AQI
23AQI
3rd August 2025
39AQI
39AQI
4th August 2025
42AQI
42AQI
5th August 2025
35AQI
35AQI
6th August 2025
40AQI
40AQI
7th August 2025
32AQI
32AQI
8th August 2025
38AQI
38AQI
9th August 2025
38AQI
38AQI
10th August 2025
33AQI
33AQI
11th August 2025
30AQI
30AQI
40AQI
27AQI
25AQI
27AQI
30AQI
37AQI
23AQI
34AQI
No. of days
Jan.Feb.Mar.Apr.MayJun.Jul.Aug.Sep.Oct.Nov.Dec.Total Days
202530AQI
27
4
28
31
30
31
28
2
31
11
217
6
Highest AQI recorded in
January40AQI
Lowest AQI recorded in
July23AQI
202431AQI
26
22
30
29
1
28
3
26
3
27
4
30
1
30
30
1
27
3
21
10
326
26
Highest AQI recorded in
December45AQI
Lowest AQI recorded in
January24AQI
202331AQI
31
27
1
31
30
31
29
1
30
1
26
4
25
4
1
31
27
2
27
4
345
17
1
Highest AQI recorded in
February37AQI
Lowest AQI recorded in
June25AQI
202236AQI
19
11
18
3
31
16
1
27
4
28
2
19
2
3
24
5
30
1
27
3
22
9
264
41
Highest AQI recorded in
January45AQI
Lowest AQI recorded in
July28AQI
202135AQI
25
5
26
2
29
26
4
26
4
27
3
30
1
21
10
21
9
30
1
24
6
23
6
308
51
Highest AQI recorded in
September42AQI
Lowest AQI recorded in
June28AQI
202044AQI
13
19
1
18
26
4
29
2
21
7
3
11
14
4
1
18
10
1
1
22
6
21
10
198
54
4
5
1
Highest AQI recorded in
September75AQI
Lowest AQI recorded in
March29AQI
Most & Least Polluted Years Over the Last 6 Years
Most Polluted Year Recorded
2020(Avg.)
44AQILeast Polluted Year Recorded
2025(Avg.)
30AQISan Leandro's annual 2025 AQI (30) shows an average percentage change of -12.9% (improved AQI) compared to previous years: 2020 (44), 2021 (35), 2022 (36), 2023 (31), 2024 (31).
