Hayward, 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
Hayward, California, United States
2025
AQI
.
Days
AQI Trends: Highest and Lowest
Highest AQI recorded on
9th Aug 2025
45AQILowest AQI recorded on
2nd Aug 2025
26AQISame Day Analysis (11th August ):
On this day, AQI across the 1 years varied significantly: 2025 ranks 1st highest AQI at 36 of Good air quality on the same day.
Download 2024 Annual Data
World Air Quality Report
Day & Night AQI Trend: 11th Aug - 12th Aug 2025
Hayward, California, United States
AQI
Day
Night
.
6 AM11th Aug 2025
8 PM
5 AM12th Aug 2025
Day time
Avg. Highest Time
11AM11th Aug
42AQI
Avg. Lowest Time
8PM11th Aug
34AQI
Night time
Avg. Highest Time
3AM12th Aug
37AQI
Avg. Lowest Time
11PM11th Aug
32AQI
In the last 24 hours,
Hayward's AQI reached its highest point of 42 at 11 AM during the Day, while the lowest point, undefined, was recorded at 5 AM during the Night between 11th Aug and 12th Aug 2025.
Day & Night AQI Trend : Jul - Aug 2025
Hayward, 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 2025486 AMAQI
13th Jul 2025487 AMAQI
13th Jul 2025498 AMAQI
13th Jul 2025479 AMAQI
13th Jul 20254410 AMAQI
13th Jul 20254411 AMAQI
13th Jul 20254412 PMAQI
13th Jul 2025471 PMAQI
13th Jul 2025502 PMAQI
13th Jul 2025503 PMAQI
13th Jul 2025524 PMAQI
13th Jul 2025525 PMAQI
13th Jul 2025526 PMAQI
13th Jul 2025487 PMAQI
13th Jul 2025488 PMAQI
13th Jul 2025489 PMAQI
13th Jul 20254710 PMAQI
13th Jul 20254711 PMAQI
14th Jul 20254812 AMAQI
14th Jul 2025461 AMAQI
14th Jul 2025452 AMAQI
14th Jul 2025473 AMAQI
14th Jul 2025474 AMAQI
14th Jul 2025465 AMAQI
18°C13/27°C
14th Jul 2025426 AMAQI
14th Jul 2025467 AMAQI
14th Jul 2025458 AMAQI
14th Jul 2025459 AMAQI
14th Jul 20254610 AMAQI
14th Jul 20254411 AMAQI
14th Jul 20254412 PMAQI
14th Jul 2025461 PMAQI
14th Jul 2025482 PMAQI
14th Jul 2025453 PMAQI
14th Jul 2025484 PMAQI
14th Jul 2025485 PMAQI
14th Jul 2025476 PMAQI
14th Jul 2025447 PMAQI
14th Jul 2025448 PMAQI
14th Jul 2025459 PMAQI
14th Jul 20254110 PMAQI
14th Jul 20254111 PMAQI
15th Jul 20254312 AMAQI
15th Jul 2025421 AMAQI
15th Jul 2025402 AMAQI
15th Jul 2025383 AMAQI
15th Jul 2025354 AMAQI
15th Jul 2025385 AMAQI
19°C12/29°C
15th Jul 2025346 AMAQI
15th Jul 2025307 AMAQI
15th Jul 2025348 AMAQI
15th Jul 2025359 AMAQI
15th Jul 20253610 AMAQI
15th Jul 20253711 AMAQI
15th Jul 20253812 PMAQI
15th Jul 2025421 PMAQI
15th Jul 2025382 PMAQI
15th Jul 2025383 PMAQI
15th Jul 2025384 PMAQI
15th Jul 2025375 PMAQI
15th Jul 2025376 PMAQI
15th Jul 2025367 PMAQI
15th Jul 2025368 PMAQI
15th Jul 2025389 PMAQI
15th Jul 20253810 PMAQI
15th Jul 20253911 PMAQI
16th Jul 20253712 AMAQI
16th Jul 2025381 AMAQI
16th Jul 2025372 AMAQI
16th Jul 2025353 AMAQI
16th Jul 2025304 AMAQI
16th Jul 2025315 AMAQI
17°C13/24°C
16th Jul 2025326 AMAQI
16th Jul 2025287 AMAQI
16th Jul 2025288 AMAQI
16th Jul 2025259 AMAQI
16th Jul 20252210 AMAQI
16th Jul 20252811 AMAQI
16th Jul 20252812 PMAQI
16th Jul 2025281 PMAQI
16th Jul 2025272 PMAQI
16th Jul 2025293 PMAQI
16th Jul 2025304 PMAQI
16th Jul 2025295 PMAQI
16th Jul 2025296 PMAQI
16th Jul 2025307 PMAQI
16th Jul 2025308 PMAQI
16th Jul 2025279 PMAQI
16th Jul 20252510 PMAQI
16th Jul 20252511 PMAQI
17th Jul 20252612 AMAQI
17th Jul 2025271 AMAQI
17th Jul 2025272 AMAQI
17th Jul 2025283 AMAQI
17th Jul 2025344 AMAQI
17th Jul 2025525 AMAQI
17°C14/23°C
17th Jul 2025476 AMAQI
17th Jul 2025407 AMAQI
17th Jul 2025338 AMAQI
17th Jul 2025309 AMAQI
17th Jul 20252910 AMAQI
17th Jul 20252811 AMAQI
17th Jul 20252812 PMAQI
17th Jul 2025281 PMAQI
17th Jul 2025282 PMAQI
17th Jul 2025303 PMAQI
17th Jul 2025304 PMAQI
17th Jul 2025305 PMAQI
17th Jul 2025316 PMAQI
17th Jul 2025287 PMAQI
17th Jul 2025278 PMAQI
17th Jul 2025309 PMAQI
17th Jul 20252810 PMAQI
17th Jul 20252811 PMAQI
18th Jul 20252812 AMAQI
18th Jul 2025271 AMAQI
18th Jul 2025282 AMAQI
18th Jul 2025263 AMAQI
18th Jul 2025204 AMAQI
18th Jul 2025225 AMAQI
17°C14/25°C
18th Jul 2025226 AMAQI
18th Jul 2025217 AMAQI
18th Jul 2025218 AMAQI
18th Jul 2025229 AMAQI
18th Jul 20252210 AMAQI
18th Jul 20252211 AMAQI
18th Jul 20252212 PMAQI
18th Jul 2025221 PMAQI
18th Jul 2025252 PMAQI
18th Jul 2025283 PMAQI
18th Jul 2025274 PMAQI
18th Jul 2025285 PMAQI
18th Jul 2025296 PMAQI
18th Jul 2025257 PMAQI
18th Jul 2025258 PMAQI
18th Jul 2025309 PMAQI
18th Jul 20252810 PMAQI
18th Jul 20252811 PMAQI
19th Jul 20252812 AMAQI
19th Jul 2025261 AMAQI
19th Jul 2025272 AMAQI
19th Jul 2025263 AMAQI
19th Jul 2025224 AMAQI
19th Jul 2025235 AMAQI
17°C14/24°C
19th Jul 2025246 AMAQI
19th Jul 2025247 AMAQI
19th Jul 2025228 AMAQI
19th Jul 2025249 AMAQI
19th Jul 20252610 AMAQI
19th Jul 20252611 AMAQI
19th Jul 20252512 PMAQI
19th Jul 2025251 PMAQI
19th Jul 2025242 PMAQI
19th Jul 2025263 PMAQI
19th Jul 2025274 PMAQI
19th Jul 2025285 PMAQI
19th Jul 2025286 PMAQI
19th Jul 2025267 PMAQI
19th Jul 2025258 PMAQI
19th Jul 2025299 PMAQI
19th Jul 20252910 PMAQI
19th Jul 20252811 PMAQI
20th Jul 20252812 AMAQI
20th Jul 2025271 AMAQI
20th Jul 2025272 AMAQI
20th Jul 2025283 AMAQI
20th Jul 2025244 AMAQI
20th Jul 2025235 AMAQI
16°C13/23°C
20th Jul 2025246 AMAQI
20th Jul 2025257 AMAQI
20th Jul 2025268 AMAQI
20th Jul 2025249 AMAQI
20th Jul 20252410 AMAQI
20th Jul 20252611 AMAQI
20th Jul 20252512 PMAQI
20th Jul 2025261 PMAQI
20th Jul 2025252 PMAQI
20th Jul 2025243 PMAQI
20th Jul 2025264 PMAQI
20th Jul 2025245 PMAQI
20th Jul 2025286 PMAQI
20th Jul 2025257 PMAQI
20th Jul 2025268 PMAQI
20th Jul 2025329 PMAQI
20th Jul 20253210 PMAQI
20th Jul 20253111 PMAQI
21st Jul 20253212 AMAQI
21st Jul 2025301 AMAQI
21st Jul 2025282 AMAQI
21st Jul 2025293 AMAQI
21st Jul 2025304 AMAQI
21st Jul 2025305 AMAQI
16°C13/21°C
21st Jul 2025306 AMAQI
21st Jul 2025287 AMAQI
21st Jul 2025258 AMAQI
21st Jul 2025249 AMAQI
21st Jul 20252310 AMAQI
21st Jul 20252211 AMAQI
21st Jul 20252412 PMAQI
21st Jul 2025201 PMAQI
21st Jul 2025232 PMAQI
21st Jul 2025253 PMAQI
21st Jul 2025244 PMAQI
21st Jul 2025255 PMAQI
21st Jul 2025246 PMAQI
21st Jul 2025277 PMAQI
21st Jul 2025268 PMAQI
21st Jul 2025249 PMAQI
21st Jul 20252410 PMAQI
21st Jul 20252411 PMAQI
22nd Jul 20252212 AMAQI
22nd Jul 2025211 AMAQI
22nd Jul 2025202 AMAQI
22nd Jul 2025193 AMAQI
22nd Jul 2025134 AMAQI
22nd Jul 2025125 AMAQI
15°C13/18°C
22nd Jul 2025146 AMAQI
22nd Jul 2025147 AMAQI
22nd Jul 2025168 AMAQI
22nd Jul 2025169 AMAQI
22nd Jul 20251610 AMAQI
22nd Jul 20251611 AMAQI
22nd Jul 20251712 PMAQI
22nd Jul 2025171 PMAQI
22nd Jul 2025162 PMAQI
22nd Jul 2025183 PMAQI
22nd Jul 2025184 PMAQI
22nd Jul 2025195 PMAQI
22nd Jul 2025206 PMAQI
22nd Jul 2025187 PMAQI
22nd Jul 2025198 PMAQI
22nd Jul 2025189 PMAQI
22nd Jul 20251810 PMAQI
22nd Jul 20251811 PMAQI
23rd Jul 20251812 AMAQI
23rd Jul 2025181 AMAQI
23rd Jul 2025182 AMAQI
23rd Jul 2025163 AMAQI
23rd Jul 2025134 AMAQI
23rd Jul 2025125 AMAQI
17°C14/21°C
23rd Jul 2025136 AMAQI
23rd Jul 2025137 AMAQI
23rd Jul 2025148 AMAQI
23rd Jul 2025169 AMAQI
23rd Jul 20251410 AMAQI
23rd Jul 20251611 AMAQI
23rd Jul 20251712 PMAQI
23rd Jul 2025171 PMAQI
23rd Jul 2025182 PMAQI
23rd Jul 2025183 PMAQI
23rd Jul 2025184 PMAQI
23rd Jul 2025185 PMAQI
23rd Jul 2025186 PMAQI
23rd Jul 2025187 PMAQI
23rd Jul 2025178 PMAQI
23rd Jul 2025199 PMAQI
23rd Jul 20251710 PMAQI
23rd Jul 20251811 PMAQI
24th Jul 20251712 AMAQI
24th Jul 2025171 AMAQI
24th Jul 2025172 AMAQI
24th Jul 2025163 AMAQI
24th Jul 2025144 AMAQI
24th Jul 2025155 AMAQI
16°C14/22°C
24th Jul 2025136 AMAQI
24th Jul 2025147 AMAQI
24th Jul 2025148 AMAQI
24th Jul 2025159 AMAQI
24th Jul 20251410 AMAQI
24th Jul 20251411 AMAQI
24th Jul 20251612 PMAQI
24th Jul 2025171 PMAQI
24th Jul 2025182 PMAQI
24th Jul 2025183 PMAQI
24th Jul 2025184 PMAQI
24th Jul 2025185 PMAQI
24th Jul 2025186 PMAQI
24th Jul 2025167 PMAQI
24th Jul 2025178 PMAQI
24th Jul 2025179 PMAQI
24th Jul 20251810 PMAQI
24th Jul 20251811 PMAQI
25th Jul 20251812 AMAQI
25th Jul 2025181 AMAQI
25th Jul 2025182 AMAQI
25th Jul 2025173 AMAQI
25th Jul 2025164 AMAQI
25th Jul 2025165 AMAQI
17°C14/23°C
25th Jul 2025166 AMAQI
25th Jul 2025167 AMAQI
25th Jul 2025158 AMAQI
25th Jul 2025159 AMAQI
25th Jul 20251810 AMAQI
25th Jul 20252111 AMAQI
25th Jul 20251612 PMAQI
25th Jul 2025161 PMAQI
25th Jul 2025162 PMAQI
25th Jul 2025173 PMAQI
25th Jul 2025184 PMAQI
25th Jul 2025185 PMAQI
25th Jul 2025206 PMAQI
25th Jul 2025177 PMAQI
25th Jul 2025178 PMAQI
25th Jul 2025189 PMAQI
25th Jul 20251810 PMAQI
25th Jul 20251711 PMAQI
26th Jul 20251812 AMAQI
26th Jul 2025171 AMAQI
26th Jul 2025172 AMAQI
26th Jul 2025163 AMAQI
26th Jul 2025154 AMAQI
26th Jul 2025185 AMAQI
16°C13/21°C
26th Jul 2025166 AMAQI
26th Jul 2025167 AMAQI
26th Jul 2025148 AMAQI
26th Jul 2025159 AMAQI
26th Jul 20251610 AMAQI
26th Jul 20251411 AMAQI
26th Jul 20251512 PMAQI
26th Jul 2025161 PMAQI
26th Jul 2025162 PMAQI
26th Jul 2025173 PMAQI
26th Jul 2025184 PMAQI
26th Jul 2025185 PMAQI
26th Jul 2025176 PMAQI
26th Jul 2025177 PMAQI
26th Jul 2025178 PMAQI
26th Jul 2025189 PMAQI
26th Jul 20251710 PMAQI
26th Jul 20251811 PMAQI
27th Jul 20251812 AMAQI
27th Jul 2025181 AMAQI
27th Jul 2025172 AMAQI
27th Jul 2025163 AMAQI
27th Jul 2025154 AMAQI
27th Jul 2025165 AMAQI
16°C14/21°C
27th Jul 2025166 AMAQI
27th Jul 2025177 AMAQI
27th Jul 2025178 AMAQI
27th Jul 2025189 AMAQI
27th Jul 20251610 AMAQI
27th Jul 20251611 AMAQI
27th Jul 20251612 PMAQI
27th Jul 2025161 PMAQI
27th Jul 2025162 PMAQI
27th Jul 2025173 PMAQI
27th Jul 2025184 PMAQI
27th Jul 2025185 PMAQI
27th Jul 2025206 PMAQI
27th Jul 2025177 PMAQI
27th Jul 2025178 PMAQI
27th Jul 2025209 PMAQI
27th Jul 20251810 PMAQI
27th Jul 20251711 PMAQI
28th Jul 20251712 AMAQI
28th Jul 2025181 AMAQI
28th Jul 2025182 AMAQI
28th Jul 2025183 AMAQI
28th Jul 2025184 AMAQI
28th Jul 2025185 AMAQI
16°C14/20°C
28th Jul 2025186 AMAQI
28th Jul 2025187 AMAQI
28th Jul 2025188 AMAQI
28th Jul 2025179 AMAQI
28th Jul 20251610 AMAQI
28th Jul 20251711 AMAQI
28th Jul 20252012 PMAQI
28th Jul 2025201 PMAQI
28th Jul 2025202 PMAQI
28th Jul 2025213 PMAQI
28th Jul 2025344 PMAQI
28th Jul 2025225 PMAQI
28th Jul 2025226 PMAQI
28th Jul 2025207 PMAQI
28th Jul 2025208 PMAQI
28th Jul 2025249 PMAQI
28th Jul 20252310 PMAQI
28th Jul 20252211 PMAQI
29th Jul 20252212 AMAQI
29th Jul 2025221 AMAQI
29th Jul 2025212 AMAQI
29th Jul 2025213 AMAQI
29th Jul 2025194 AMAQI
29th Jul 2025185 AMAQI
18°C13/25°C
29th Jul 2025206 AMAQI
29th Jul 2025227 AMAQI
29th Jul 2025228 AMAQI
29th Jul 2025229 AMAQI
29th Jul 20252010 AMAQI
29th Jul 20252311 AMAQI
29th Jul 20252312 PMAQI
29th Jul 2025241 PMAQI
29th Jul 2025242 PMAQI
29th Jul 2025263 PMAQI
29th Jul 2025254 PMAQI
29th Jul 2025255 PMAQI
29th Jul 2025266 PMAQI
29th Jul 2025247 PMAQI
29th Jul 2025238 PMAQI
29th Jul 2025279 PMAQI
29th Jul 20252610 PMAQI
29th Jul 20252511 PMAQI
30th Jul 20252612 AMAQI
30th Jul 2025251 AMAQI
30th Jul 2025262 AMAQI
30th Jul 2025243 AMAQI
30th Jul 2025254 AMAQI
30th Jul 2025275 AMAQI
17°C14/24°C
30th Jul 2025266 AMAQI
30th Jul 2025247 AMAQI
30th Jul 2025218 AMAQI
30th Jul 2025229 AMAQI
30th Jul 20252410 AMAQI
30th Jul 20252311 AMAQI
30th Jul 20252212 PMAQI
30th Jul 2025241 PMAQI
30th Jul 2025232 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 2025259 PMAQI
30th Jul 20252610 PMAQI
30th Jul 20252511 PMAQI
31st Jul 20252512 AMAQI
31st Jul 2025241 AMAQI
31st Jul 2025242 AMAQI
31st Jul 2025253 AMAQI
31st Jul 2025284 AMAQI
31st Jul 2025265 AMAQI
16°C13/21°C
31st Jul 2025246 AMAQI
31st Jul 2025247 AMAQI
31st Jul 2025258 AMAQI
31st Jul 2025279 AMAQI
31st Jul 20253110 AMAQI
31st Jul 20253211 AMAQI
31st Jul 20253012 PMAQI
31st Jul 2025301 PMAQI
31st Jul 2025302 PMAQI
31st Jul 2025353 PMAQI
31st Jul 2025374 PMAQI
31st Jul 2025345 PMAQI
31st Jul 2025326 PMAQI
31st Jul 2025277 PMAQI
31st Jul 2025308 PMAQI
31st Jul 2025319 PMAQI
31st Jul 20253210 PMAQI
31st Jul 20252911 PMAQI
1st Aug 20252912 AMAQI
1st Aug 2025291 AMAQI
1st Aug 2025292 AMAQI
1st Aug 2025323 AMAQI
1st Aug 2025354 AMAQI
1st Aug 2025345 AMAQI
18°C14/26°C
1st Aug 2025366 AMAQI
1st Aug 2025287 AMAQI
1st Aug 2025278 AMAQI
1st Aug 2025269 AMAQI
1st Aug 20252610 AMAQI
1st Aug 20252711 AMAQI
1st Aug 20252912 PMAQI
1st Aug 2025321 PMAQI
1st Aug 2025362 PMAQI
1st Aug 2025323 PMAQI
1st Aug 2025334 PMAQI
1st Aug 2025325 PMAQI
1st Aug 2025336 PMAQI
1st Aug 2025317 PMAQI
1st Aug 2025348 PMAQI
1st Aug 2025359 PMAQI
1st Aug 20252810 PMAQI
1st Aug 20252811 PMAQI
2nd Aug 20252512 AMAQI
2nd Aug 2025251 AMAQI
2nd Aug 2025262 AMAQI
2nd Aug 2025273 AMAQI
2nd Aug 2025284 AMAQI
2nd Aug 2025225 AMAQI
17°C14/25°C
2nd Aug 2025226 AMAQI
2nd Aug 2025227 AMAQI
2nd Aug 2025228 AMAQI
2nd Aug 2025219 AMAQI
2nd Aug 20252110 AMAQI
2nd Aug 20252311 AMAQI
2nd Aug 20252312 PMAQI
2nd Aug 2025241 PMAQI
2nd Aug 2025252 PMAQI
2nd Aug 2025283 PMAQI
2nd Aug 2025294 PMAQI
2nd Aug 2025305 PMAQI
2nd Aug 2025286 PMAQI
2nd Aug 2025267 PMAQI
2nd Aug 2025298 PMAQI
2nd Aug 2025349 PMAQI
2nd Aug 20252710 PMAQI
2nd Aug 20253111 PMAQI
3rd Aug 20253512 AMAQI
3rd Aug 2025361 AMAQI
3rd Aug 2025362 AMAQI
3rd Aug 2025383 AMAQI
3rd Aug 2025384 AMAQI
3rd Aug 2025365 AMAQI
17°C13/26°C
3rd Aug 2025346 AMAQI
3rd Aug 2025377 AMAQI
3rd Aug 2025338 AMAQI
3rd Aug 2025349 AMAQI
3rd Aug 20253610 AMAQI
3rd Aug 20253411 AMAQI
3rd Aug 20253412 PMAQI
3rd Aug 2025351 PMAQI
3rd Aug 2025362 PMAQI
3rd Aug 2025373 PMAQI
3rd Aug 2025374 PMAQI
3rd Aug 2025355 PMAQI
3rd Aug 2025326 PMAQI
3rd Aug 2025347 PMAQI
3rd Aug 2025338 PMAQI
3rd Aug 2025309 PMAQI
3rd Aug 20253010 PMAQI
3rd Aug 20253611 PMAQI
4th Aug 20253812 AMAQI
4th Aug 2025391 AMAQI
4th Aug 2025402 AMAQI
4th Aug 2025393 AMAQI
4th Aug 2025404 AMAQI
4th Aug 2025425 AMAQI
17°C13/25°C
4th Aug 2025416 AMAQI
4th Aug 2025387 AMAQI
4th Aug 2025378 AMAQI
4th Aug 2025389 AMAQI
4th Aug 20254010 AMAQI
4th Aug 20254511 AMAQI
4th Aug 20254212 PMAQI
4th Aug 2025421 PMAQI
4th Aug 2025412 PMAQI
4th Aug 2025403 PMAQI
4th Aug 2025384 PMAQI
4th Aug 2025415 PMAQI
4th Aug 2025426 PMAQI
4th Aug 2025387 PMAQI
4th Aug 2025428 PMAQI
4th Aug 2025429 PMAQI
4th Aug 20254510 PMAQI
4th Aug 20255011 PMAQI
5th Aug 20255012 AMAQI
5th Aug 2025491 AMAQI
5th Aug 2025482 AMAQI
5th Aug 2025443 AMAQI
5th Aug 2025444 AMAQI
5th Aug 2025415 AMAQI
18°C12/26°C
5th Aug 2025426 AMAQI
5th Aug 2025397 AMAQI
5th Aug 2025368 AMAQI
5th Aug 2025399 AMAQI
5th Aug 20253910 AMAQI
5th Aug 20253811 AMAQI
5th Aug 20254212 PMAQI
5th Aug 2025441 PMAQI
5th Aug 2025412 PMAQI
5th Aug 2025403 PMAQI
5th Aug 2025404 PMAQI
5th Aug 2025425 PMAQI
5th Aug 2025406 PMAQI
5th Aug 2025387 PMAQI
5th Aug 2025388 PMAQI
5th Aug 2025369 PMAQI
5th Aug 20254210 PMAQI
5th Aug 20253911 PMAQI
6th Aug 20254212 AMAQI
6th Aug 2025411 AMAQI
6th Aug 2025432 AMAQI
6th Aug 2025383 AMAQI
6th Aug 2025374 AMAQI
6th Aug 2025385 AMAQI
17°C12/25°C
6th Aug 2025386 AMAQI
6th Aug 2025397 AMAQI
6th Aug 2025398 AMAQI
6th Aug 2025399 AMAQI
6th Aug 20253810 AMAQI
6th Aug 20253911 AMAQI
6th Aug 20254012 PMAQI
6th Aug 2025391 PMAQI
6th Aug 2025402 PMAQI
6th Aug 2025413 PMAQI
6th Aug 2025444 PMAQI
6th Aug 2025435 PMAQI
6th Aug 2025466 PMAQI
6th Aug 2025387 PMAQI
6th Aug 2025438 PMAQI
6th Aug 2025439 PMAQI
6th Aug 20253810 PMAQI
6th Aug 20253811 PMAQI
7th Aug 20253612 AMAQI
7th Aug 2025311 AMAQI
7th Aug 2025322 AMAQI
7th Aug 2025303 AMAQI
7th Aug 2025264 AMAQI
7th Aug 2025265 AMAQI
21°C12/32°C
7th Aug 2025316 AMAQI
7th Aug 2025347 AMAQI
7th Aug 2025328 AMAQI
7th Aug 2025309 AMAQI
7th Aug 20252710 AMAQI
7th Aug 20253011 AMAQI
7th Aug 20253612 PMAQI
7th Aug 2025311 PMAQI
7th Aug 2025302 PMAQI
7th Aug 2025323 PMAQI
7th Aug 2025314 PMAQI
7th Aug 2025305 PMAQI
7th Aug 2025366 PMAQI
7th Aug 2025337 PMAQI
7th Aug 2025288 PMAQI
7th Aug 2025249 PMAQI
7th Aug 20252510 PMAQI
7th Aug 20252611 PMAQI
8th Aug 20252812 AMAQI
8th Aug 2025281 AMAQI
8th Aug 2025292 AMAQI
8th Aug 2025283 AMAQI
8th Aug 2025264 AMAQI
8th Aug 2025265 AMAQI
19°C13/29°C
8th Aug 2025286 AMAQI
8th Aug 2025307 AMAQI
8th Aug 2025298 AMAQI
8th Aug 2025289 AMAQI
8th Aug 20253010 AMAQI
8th Aug 20252811 AMAQI
8th Aug 20253112 PMAQI
8th Aug 2025341 PMAQI
8th Aug 2025372 PMAQI
8th Aug 2025373 PMAQI
8th Aug 2025364 PMAQI
8th Aug 2025375 PMAQI
8th Aug 2025366 PMAQI
8th Aug 2025337 PMAQI
8th Aug 2025318 PMAQI
8th Aug 2025349 PMAQI
8th Aug 20253510 PMAQI
8th Aug 20253811 PMAQI
9th Aug 20253612 AMAQI
9th Aug 2025391 AMAQI
9th Aug 2025392 AMAQI
9th Aug 2025413 AMAQI
9th Aug 2025394 AMAQI
9th Aug 2025395 AMAQI
21°C13/33°C
9th Aug 2025426 AMAQI
9th Aug 2025427 AMAQI
9th Aug 2025428 AMAQI
9th Aug 2025459 AMAQI
9th Aug 20254810 AMAQI
9th Aug 20255211 AMAQI
9th Aug 20255312 PMAQI
9th Aug 2025531 PMAQI
9th Aug 2025512 PMAQI
9th Aug 2025533 PMAQI
9th Aug 2025524 PMAQI
9th Aug 2025525 PMAQI
9th Aug 2025536 PMAQI
9th Aug 2025507 PMAQI
9th Aug 2025478 PMAQI
9th Aug 2025479 PMAQI
9th Aug 20254310 PMAQI
9th Aug 20254411 PMAQI
10th Aug 20254012 AMAQI
10th Aug 2025421 AMAQI
10th Aug 2025442 AMAQI
10th Aug 2025423 AMAQI
10th Aug 2025414 AMAQI
10th Aug 2025405 AMAQI
22°C15/31°C
10th Aug 2025406 AMAQI
10th Aug 2025427 AMAQI
10th Aug 2025428 AMAQI
10th Aug 2025419 AMAQI
10th Aug 20254210 AMAQI
10th Aug 20254311 AMAQI
10th Aug 20254212 PMAQI
10th Aug 2025421 PMAQI
10th Aug 2025442 PMAQI
10th Aug 2025423 PMAQI
10th Aug 2025454 PMAQI
10th Aug 2025455 PMAQI
10th Aug 2025436 PMAQI
10th Aug 2025447 PMAQI
10th Aug 2025448 PMAQI
10th Aug 2025449 PMAQI
10th Aug 20254210 PMAQI
10th Aug 20254311 PMAQI
11th Aug 20254312 AMAQI
11th Aug 2025361 AMAQI
11th Aug 2025312 AMAQI
11th Aug 2025333 AMAQI
11th Aug 2025344 AMAQI
11th Aug 2025375 AMAQI
20°C14/31°C
11th Aug 2025346 AMAQI
11th Aug 2025347 AMAQI
11th Aug 2025358 AMAQI
11th Aug 2025369 AMAQI
11th Aug 20254010 AMAQI
11th Aug 20254211 AMAQI
11th Aug 20254012 PMAQI
11th Aug 2025421 PMAQI
11th Aug 2025362 PMAQI
11th Aug 2025373 PMAQI
11th Aug 2025404 PMAQI
11th Aug 2025395 PMAQI
11th Aug 2025396 PMAQI
11th Aug 2025387 PMAQI
11th Aug 2025348 PMAQI
11th Aug 2025349 PMAQI
11th Aug 20253310 PMAQI
11th Aug 20253211 PMAQI
12th Aug 20253412 AMAQI
12th Aug 2025351 AMAQI
12th Aug 2025362 AMAQI
12th Aug 2025373 AMAQI
12th Aug 2025374 AMAQI
17°C12/25°C
6 AM
1 PM
8 PM
1 AM
5 AM
--°C/°C
Day time
Avg. Highest Time
6 AM - 6 PM
30AQI
13 hours / Day
390 hours / Month
Avg. Lowest Time
6 AM - 8 PM
30AQI
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. 30), while the lowest AQI was between 6 AM to 8 PM (Avg. 30).
Night time
Avg. Highest Time
12 AM - 11 PM
30AQI
9 hours / Day
270 hours / Month
Avg. Lowest Time
12 AM - 5 AM
30AQI
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. 30), while the lowest AQI was between 12 AM to 5 AM (Avg. 30).
2025 Days Vs Air Quality
Hayward, California, United States
2025
100%
139
Total number of days with different AQI categories in last 224 days in 2025 (141 days remaining)
Good
139 DaysModerate
0 DaysPoor
0 DaysUnhealthy
0 DaysSevere
0 DaysHazardous
0 DaysUnder WHO’s Safe Air Quality Limits: 100%
Health Risk Level:
Very Low
In 2025, 100% of 224 days were within WHO’s safe air quality limits. The risk of health issues is Very Low, but health impacts are still unclear.
Annual Air Quality Insights
Hayward, 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 March 2025
22AQI
22AQI
2nd March 2025
20AQI
20AQI
3rd March 2025
20AQI
20AQI
4th March 2025
17AQI
17AQI
5th March 2025
18AQI
18AQI
6th March 2025
18AQI
18AQI
1st April 2025
18AQI
18AQI
2nd April 2025
19AQI
19AQI
3rd April 2025
19AQI
19AQI
4th April 2025
21AQI
21AQI
5th April 2025
20AQI
20AQI
6th April 2025
20AQI
20AQI
7th April 2025
17AQI
17AQI
8th April 2025
17AQI
17AQI
9th April 2025
18AQI
18AQI
10th April 2025
24AQI
24AQI
11th April 2025
22AQI
22AQI
12th April 2025
26AQI
26AQI
13th April 2025
27AQI
27AQI
14th April 2025
29AQI
29AQI
15th April 2025
29AQI
29AQI
16th April 2025
27AQI
27AQI
17th April 2025
24AQI
24AQI
18th April 2025
24AQI
24AQI
19th April 2025
24AQI
24AQI
20th April 2025
26AQI
26AQI
21st April 2025
23AQI
23AQI
22nd April 2025
24AQI
24AQI
23rd April 2025
30AQI
30AQI
24th April 2025
30AQI
30AQI
25th April 2025
19AQI
19AQI
26th April 2025
15AQI
15AQI
27th April 2025
14AQI
14AQI
28th April 2025
20AQI
20AQI
29th April 2025
26AQI
26AQI
30th April 2025
28AQI
28AQI
1st May 2025
30AQI
30AQI
2nd May 2025
25AQI
25AQI
3rd May 2025
24AQI
24AQI
4th May 2025
37AQI
37AQI
5th May 2025
34AQI
34AQI
6th May 2025
33AQI
33AQI
7th May 2025
36AQI
36AQI
8th May 2025
33AQI
33AQI
9th May 2025
27AQI
27AQI
10th May 2025
26AQI
26AQI
11th May 2025
22AQI
22AQI
12th May 2025
18AQI
18AQI
13th May 2025
15AQI
15AQI
14th May 2025
18AQI
18AQI
15th May 2025
21AQI
21AQI
16th May 2025
23AQI
23AQI
17th May 2025
22AQI
22AQI
18th May 2025
21AQI
21AQI
19th May 2025
26AQI
26AQI
20th May 2025
21AQI
21AQI
21st May 2025
26AQI
26AQI
22nd May 2025
27AQI
27AQI
23rd May 2025
22AQI
22AQI
24th May 2025
25AQI
25AQI
25th May 2025
22AQI
22AQI
26th May 2025
20AQI
20AQI
27th May 2025
22AQI
22AQI
28th May 2025
31AQI
31AQI
29th May 2025
20AQI
20AQI
30th May 2025
30AQI
30AQI
31st May 2025
36AQI
36AQI
1st June 2025
35AQI
35AQI
2nd June 2025
37AQI
37AQI
3rd June 2025
30AQI
30AQI
4th June 2025
35AQI
35AQI
5th June 2025
32AQI
32AQI
6th June 2025
24AQI
24AQI
7th June 2025
24AQI
24AQI
8th June 2025
23AQI
23AQI
9th June 2025
21AQI
21AQI
10th June 2025
26AQI
26AQI
11th June 2025
36AQI
36AQI
12th June 2025
39AQI
39AQI
13th June 2025
36AQI
36AQI
14th June 2025
30AQI
30AQI
15th June 2025
31AQI
31AQI
16th June 2025
30AQI
30AQI
17th June 2025
30AQI
30AQI
18th June 2025
30AQI
30AQI
19th June 2025
36AQI
36AQI
20th June 2025
39AQI
39AQI
21st June 2025
33AQI
33AQI
22nd June 2025
29AQI
29AQI
23rd June 2025
29AQI
29AQI
24th June 2025
24AQI
24AQI
25th June 2025
24AQI
24AQI
26th June 2025
27AQI
27AQI
27th June 2025
32AQI
32AQI
28th June 2025
38AQI
38AQI
29th June 2025
31AQI
31AQI
30th June 2025
28AQI
28AQI
1st July 2025
29AQI
29AQI
2nd July 2025
29AQI
29AQI
3rd July 2025
33AQI
33AQI
4th July 2025
30AQI
30AQI
5th July 2025
38AQI
38AQI
6th July 2025
30AQI
30AQI
7th July 2025
30AQI
30AQI
8th July 2025
26AQI
26AQI
9th July 2025
22AQI
22AQI
10th July 2025
30AQI
30AQI
11th July 2025
46AQI
46AQI
12th July 2025
50AQI
50AQI
13th July 2025
48AQI
48AQI
14th July 2025
45AQI
45AQI
15th July 2025
38AQI
38AQI
16th July 2025
30AQI
30AQI
17th July 2025
31AQI
31AQI
18th July 2025
25AQI
25AQI
19th July 2025
26AQI
26AQI
20th July 2025
26AQI
26AQI
21st July 2025
26AQI
26AQI
22nd July 2025
18AQI
18AQI
23rd July 2025
16AQI
16AQI
24th July 2025
16AQI
16AQI
25th July 2025
17AQI
17AQI
26th July 2025
17AQI
17AQI
27th July 2025
17AQI
17AQI
28th July 2025
20AQI
20AQI
29th July 2025
23AQI
23AQI
30th July 2025
24AQI
24AQI
31st July 2025
29AQI
29AQI
1st August 2025
31AQI
31AQI
2nd August 2025
26AQI
26AQI
3rd August 2025
35AQI
35AQI
4th August 2025
41AQI
41AQI
5th August 2025
42AQI
42AQI
6th August 2025
40AQI
40AQI
7th August 2025
30AQI
30AQI
8th August 2025
31AQI
31AQI
9th August 2025
45AQI
45AQI
10th August 2025
42AQI
42AQI
11th August 2025
36AQI
36AQI
19AQI
23AQI
26AQI
31AQI
29AQI
36AQI
No. of days
Jan.Feb.Mar.Apr.MayJun.Jul.Aug.Sep.Oct.Nov.Dec.Total Days
202527AQI
6
30
31
30
31
11
139
Highest AQI recorded in
August36AQI
Lowest AQI recorded in
March19AQI
Most & Least Polluted Years Over the Last 1 Years
Most Polluted Year Recorded
2025(Avg.)
27AQILeast Polluted Year Recorded
2025(Avg.)
27AQIHayward's annual 2025 AQI (27) shows an average percentage change of NaN% (improved AQI) compared to previous years: .
