Redwood City, 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+
November Air Quality Analysis
Redwood City, California, United States
2025
AQI
.
Days
AQI Trends: Highest and Lowest
Highest AQI recorded on
23rd Nov 2025
56AQILowest AQI recorded on
13th Nov 2025
18AQISame Day Analysis (26th November ):
On this day, AQI across the 1 years varied significantly: 2025 ranks 1st highest AQI at 44 of Good air quality on the same day.
Download 2024 Annual Data
World Air Quality Report
Day & Night AQI Trend: 25th Nov - 26th Nov 2025
Redwood City, California, United States
AQI
Day
Night
.
6 AM25th Nov 2025
5 PM
5 AM26th Nov 2025
Day time
Avg. Highest Time
1PM25th Nov
62AQI
Avg. Lowest Time
6AM25th Nov
34AQI
Night time
Avg. Highest Time
11PM25th Nov
59AQI
Avg. Lowest Time
4AM26th Nov
36AQI
In the last 24 hours,
Redwood City's AQI reached its highest point of 62 at 1 PM during the Day, while the lowest point, 34, was recorded at 6 AM during the Day between 25th Nov and 26th Nov 2025.
Day & Night AQI Trend : Oct - Nov 2025
Redwood City, California, United States
OctNov
27th - 28th28th - 29th29th - 30th30th - 31st31st - 01st01st - 02nd02nd - 03rd03rd - 04th04th - 05th05th - 06th06th - 07th07th - 08th08th - 09th09th - 10th10th - 11th11th - 12th12th - 13th13th - 14th14th - 15th15th - 16th16th - 17th17th - 18th18th - 19th19th - 20th20th - 21st21st - 22nd22nd - 23rd23rd - 24th24th - 25th25th - 26th26th
Day
Night
27th Oct 2025206 AMAQI
27th Oct 2025167 AMAQI
27th Oct 2025208 AMAQI
27th Oct 2025289 AMAQI
27th Oct 20254010 AMAQI
27th Oct 20254311 AMAQI
27th Oct 20252712 PMAQI
27th Oct 2025151 PMAQI
27th Oct 2025132 PMAQI
27th Oct 2025173 PMAQI
27th Oct 2025144 PMAQI
27th Oct 2025115 PMAQI
27th Oct 2025116 PMAQI
27th Oct 2025117 PMAQI
27th Oct 2025118 PMAQI
27th Oct 2025119 PMAQI
27th Oct 20251110 PMAQI
27th Oct 20251111 PMAQI
28th Oct 20251612 AMAQI
28th Oct 2025201 AMAQI
28th Oct 2025152 AMAQI
28th Oct 2025143 AMAQI
28th Oct 2025174 AMAQI
28th Oct 2025175 AMAQI
--°C/°C
28th Oct 2025176 AMAQI
28th Oct 2025147 AMAQI
28th Oct 2025118 AMAQI
28th Oct 2025119 AMAQI
28th Oct 20251110 AMAQI
28th Oct 20253211 AMAQI
28th Oct 20254312 PMAQI
28th Oct 2025301 PMAQI
28th Oct 2025282 PMAQI
28th Oct 2025243 PMAQI
28th Oct 2025174 PMAQI
28th Oct 2025175 PMAQI
28th Oct 2025226 PMAQI
28th Oct 2025227 PMAQI
28th Oct 2025178 PMAQI
28th Oct 2025179 PMAQI
28th Oct 20252810 PMAQI
28th Oct 20253711 PMAQI
29th Oct 20253312 AMAQI
29th Oct 2025361 AMAQI
29th Oct 2025392 AMAQI
29th Oct 2025393 AMAQI
29th Oct 2025364 AMAQI
29th Oct 2025305 AMAQI
18°C10/27°C
29th Oct 2025376 AMAQI
29th Oct 2025517 AMAQI
29th Oct 2025468 AMAQI
29th Oct 2025449 AMAQI
29th Oct 20255210 AMAQI
29th Oct 20254411 AMAQI
29th Oct 20254612 PMAQI
29th Oct 2025601 PMAQI
29th Oct 2025552 PMAQI
29th Oct 2025553 PMAQI
29th Oct 2025504 PMAQI
29th Oct 2025445 PMAQI
29th Oct 2025386 PMAQI
29th Oct 2025227 PMAQI
29th Oct 2025148 PMAQI
29th Oct 2025259 PMAQI
29th Oct 20254410 PMAQI
29th Oct 20254711 PMAQI
30th Oct 20254412 AMAQI
30th Oct 2025501 AMAQI
30th Oct 2025512 AMAQI
30th Oct 2025403 AMAQI
30th Oct 2025334 AMAQI
30th Oct 2025335 AMAQI
19°C12/30°C
30th Oct 2025376 AMAQI
30th Oct 2025387 AMAQI
30th Oct 2025258 AMAQI
30th Oct 2025209 AMAQI
30th Oct 20253010 AMAQI
30th Oct 20254211 AMAQI
30th Oct 20254412 PMAQI
30th Oct 2025441 PMAQI
30th Oct 2025492 PMAQI
30th Oct 2025553 PMAQI
30th Oct 2025564 PMAQI
30th Oct 2025575 PMAQI
30th Oct 2025566 PMAQI
30th Oct 2025567 PMAQI
30th Oct 2025568 PMAQI
30th Oct 2025559 PMAQI
30th Oct 20255210 PMAQI
30th Oct 20254411 PMAQI
31st Oct 20254812 AMAQI
31st Oct 2025521 AMAQI
31st Oct 2025382 AMAQI
31st Oct 2025303 AMAQI
31st Oct 2025364 AMAQI
31st Oct 2025375 AMAQI
13°C12/13°C
31st Oct 2025256 AMAQI
31st Oct 2025227 AMAQI
31st Oct 2025308 AMAQI
31st Oct 2025309 AMAQI
31st Oct 20253410 AMAQI
31st Oct 20253911 AMAQI
31st Oct 20254712 PMAQI
31st Oct 2025581 PMAQI
31st Oct 2025542 PMAQI
31st Oct 2025553 PMAQI
31st Oct 2025594 PMAQI
31st Oct 2025565 PMAQI
31st Oct 2025556 PMAQI
31st Oct 2025507 PMAQI
31st Oct 2025428 PMAQI
31st Oct 2025439 PMAQI
31st Oct 20255010 PMAQI
31st Oct 20255011 PMAQI
1st Nov 20256012 AMAQI
1st Nov 2025691 AMAQI
1st Nov 2025612 AMAQI
1st Nov 2025573 AMAQI
1st Nov 2025574 AMAQI
1st Nov 2025585 AMAQI
14°C11/19°C
1st Nov 2025456 AMAQI
1st Nov 2025257 AMAQI
1st Nov 2025148 AMAQI
1st Nov 2025119 AMAQI
1st Nov 20252610 AMAQI
1st Nov 20253711 AMAQI
1st Nov 20254412 PMAQI
1st Nov 2025591 PMAQI
1st Nov 2025582 PMAQI
1st Nov 2025433 PMAQI
1st Nov 2025264 PMAQI
1st Nov 2025155 PMAQI
1st Nov 2025146 PMAQI
1st Nov 2025207 PMAQI
1st Nov 2025258 PMAQI
1st Nov 2025289 PMAQI
1st Nov 20253410 PMAQI
1st Nov 20253711 PMAQI
2nd Nov 20253812 AMAQI
2nd Nov 2025471 AMAQI
2nd Nov 2025552 AMAQI
2nd Nov 2025553 AMAQI
2nd Nov 2025554 AMAQI
2nd Nov 2025425 AMAQI
15°C9/25°C
2nd Nov 2025206 AMAQI
2nd Nov 2025117 AMAQI
2nd Nov 2025148 AMAQI
2nd Nov 2025229 AMAQI
2nd Nov 20252510 AMAQI
2nd Nov 20251611 AMAQI
2nd Nov 20252812 PMAQI
2nd Nov 2025421 PMAQI
2nd Nov 2025362 PMAQI
2nd Nov 2025303 PMAQI
2nd Nov 2025284 PMAQI
2nd Nov 2025345 PMAQI
2nd Nov 2025446 PMAQI
2nd Nov 2025527 PMAQI
2nd Nov 2025558 PMAQI
2nd Nov 2025639 PMAQI
2nd Nov 20255810 PMAQI
2nd Nov 20255011 PMAQI
3rd Nov 20255812 AMAQI
3rd Nov 2025551 AMAQI
3rd Nov 2025522 AMAQI
3rd Nov 2025443 AMAQI
3rd Nov 2025474 AMAQI
3rd Nov 2025525 AMAQI
16°C10/25°C
3rd Nov 2025446 AMAQI
3rd Nov 2025347 AMAQI
3rd Nov 2025288 AMAQI
3rd Nov 2025269 AMAQI
3rd Nov 20252510 AMAQI
3rd Nov 20253211 AMAQI
3rd Nov 20254612 PMAQI
3rd Nov 2025481 PMAQI
3rd Nov 2025422 PMAQI
3rd Nov 2025343 PMAQI
3rd Nov 2025304 PMAQI
3rd Nov 2025385 PMAQI
3rd Nov 2025366 PMAQI
3rd Nov 2025307 PMAQI
3rd Nov 2025338 PMAQI
3rd Nov 2025429 PMAQI
3rd Nov 20254410 PMAQI
3rd Nov 20253911 PMAQI
4th Nov 20254112 AMAQI
4th Nov 2025401 AMAQI
4th Nov 2025332 AMAQI
4th Nov 2025313 AMAQI
4th Nov 2025304 AMAQI
4th Nov 2025335 AMAQI
15°C9/23°C
4th Nov 2025256 AMAQI
4th Nov 2025177 AMAQI
4th Nov 2025198 AMAQI
4th Nov 2025169 AMAQI
4th Nov 20252210 AMAQI
4th Nov 20252511 AMAQI
4th Nov 20251412 PMAQI
4th Nov 2025111 PMAQI
4th Nov 2025222 PMAQI
4th Nov 2025343 PMAQI
4th Nov 2025244 PMAQI
4th Nov 2025135 PMAQI
4th Nov 2025146 PMAQI
4th Nov 2025117 PMAQI
4th Nov 2025118 PMAQI
4th Nov 2025149 PMAQI
4th Nov 20251410 PMAQI
4th Nov 20251111 PMAQI
5th Nov 20251112 AMAQI
5th Nov 2025111 AMAQI
5th Nov 2025342 AMAQI
5th Nov 2025483 AMAQI
5th Nov 2025254 AMAQI
5th Nov 2025165 AMAQI
16°C10/24°C
5th Nov 2025146 AMAQI
5th Nov 2025207 AMAQI
5th Nov 2025208 AMAQI
5th Nov 2025179 AMAQI
5th Nov 20252010 AMAQI
5th Nov 20252011 AMAQI
5th Nov 20251512 PMAQI
5th Nov 2025141 PMAQI
5th Nov 2025162 PMAQI
5th Nov 2025143 PMAQI
5th Nov 2025144 PMAQI
5th Nov 2025165 PMAQI
5th Nov 2025206 PMAQI
5th Nov 2025147 PMAQI
5th Nov 2025168 PMAQI
5th Nov 2025229 PMAQI
5th Nov 20251610 PMAQI
5th Nov 20252011 PMAQI
6th Nov 20252612 AMAQI
6th Nov 2025201 AMAQI
6th Nov 2025172 AMAQI
6th Nov 2025153 AMAQI
6th Nov 2025114 AMAQI
6th Nov 2025115 AMAQI
16°C13/19°C
6th Nov 2025116 AMAQI
6th Nov 2025167 AMAQI
6th Nov 2025188 AMAQI
6th Nov 2025119 AMAQI
6th Nov 20251410 AMAQI
6th Nov 20251711 AMAQI
6th Nov 20251912 PMAQI
6th Nov 2025221 PMAQI
6th Nov 2025202 PMAQI
6th Nov 2025223 PMAQI
6th Nov 2025404 PMAQI
6th Nov 2025565 PMAQI
6th Nov 2025506 PMAQI
6th Nov 2025507 PMAQI
6th Nov 2025578 PMAQI
6th Nov 2025489 PMAQI
6th Nov 20253810 PMAQI
6th Nov 20254211 PMAQI
7th Nov 20254712 AMAQI
7th Nov 2025361 AMAQI
7th Nov 2025362 AMAQI
7th Nov 2025383 AMAQI
7th Nov 2025284 AMAQI
7th Nov 2025265 AMAQI
15°C11/21°C
7th Nov 2025226 AMAQI
7th Nov 2025227 AMAQI
7th Nov 2025228 AMAQI
7th Nov 2025169 AMAQI
7th Nov 20251410 AMAQI
7th Nov 20253311 AMAQI
7th Nov 20254812 PMAQI
7th Nov 2025481 PMAQI
7th Nov 2025542 PMAQI
7th Nov 2025443 PMAQI
7th Nov 2025464 PMAQI
7th Nov 2025495 PMAQI
7th Nov 2025386 PMAQI
7th Nov 2025257 PMAQI
7th Nov 2025188 PMAQI
7th Nov 2025119 PMAQI
7th Nov 20251410 PMAQI
7th Nov 20252211 PMAQI
8th Nov 20253512 AMAQI
8th Nov 2025541 AMAQI
8th Nov 2025532 AMAQI
8th Nov 2025533 AMAQI
8th Nov 2025544 AMAQI
8th Nov 2025435 AMAQI
15°C11/23°C
8th Nov 2025226 AMAQI
8th Nov 2025187 AMAQI
8th Nov 2025138 AMAQI
8th Nov 2025199 AMAQI
8th Nov 20252010 AMAQI
8th Nov 20252411 AMAQI
8th Nov 20253812 PMAQI
8th Nov 2025441 PMAQI
8th Nov 2025442 PMAQI
8th Nov 2025383 PMAQI
8th Nov 2025364 PMAQI
8th Nov 2025305 PMAQI
8th Nov 2025226 PMAQI
8th Nov 2025227 PMAQI
8th Nov 2025178 PMAQI
8th Nov 2025299 PMAQI
8th Nov 20255310 PMAQI
8th Nov 20255211 PMAQI
9th Nov 20254812 AMAQI
9th Nov 2025521 AMAQI
9th Nov 2025612 AMAQI
9th Nov 2025613 AMAQI
9th Nov 2025614 AMAQI
9th Nov 2025525 AMAQI
17°C11/24°C
9th Nov 2025326 AMAQI
9th Nov 2025267 AMAQI
9th Nov 2025358 AMAQI
9th Nov 2025379 AMAQI
9th Nov 20253310 AMAQI
9th Nov 20253611 AMAQI
9th Nov 20254912 PMAQI
9th Nov 2025521 PMAQI
9th Nov 2025332 PMAQI
9th Nov 2025283 PMAQI
9th Nov 2025364 PMAQI
9th Nov 2025365 PMAQI
9th Nov 2025406 PMAQI
9th Nov 2025507 PMAQI
9th Nov 2025508 PMAQI
9th Nov 2025579 PMAQI
9th Nov 20256410 PMAQI
9th Nov 20255411 PMAQI
10th Nov 20254812 AMAQI
10th Nov 2025471 AMAQI
10th Nov 2025502 AMAQI
10th Nov 2025483 AMAQI
10th Nov 2025384 AMAQI
10th Nov 2025325 AMAQI
19°C13/29°C
10th Nov 2025396 AMAQI
10th Nov 2025377 AMAQI
10th Nov 2025378 AMAQI
10th Nov 2025409 AMAQI
10th Nov 20253310 AMAQI
10th Nov 20254711 AMAQI
10th Nov 20255812 PMAQI
10th Nov 2025561 PMAQI
10th Nov 2025562 PMAQI
10th Nov 2025563 PMAQI
10th Nov 2025514 PMAQI
10th Nov 2025425 PMAQI
10th Nov 2025426 PMAQI
10th Nov 2025487 PMAQI
10th Nov 2025578 PMAQI
10th Nov 2025619 PMAQI
10th Nov 20256210 PMAQI
10th Nov 20255811 PMAQI
11th Nov 20255412 AMAQI
11th Nov 2025521 AMAQI
11th Nov 2025512 AMAQI
11th Nov 2025493 AMAQI
11th Nov 2025424 AMAQI
11th Nov 2025395 AMAQI
20°C13/29°C
11th Nov 2025346 AMAQI
11th Nov 2025227 AMAQI
11th Nov 2025748 AMAQI
11th Nov 2025909 AMAQI
11th Nov 20254710 AMAQI
11th Nov 20255011 AMAQI
11th Nov 20255712 PMAQI
11th Nov 2025621 PMAQI
11th Nov 2025622 PMAQI
11th Nov 2025573 PMAQI
11th Nov 2025554 PMAQI
11th Nov 2025525 PMAQI
11th Nov 2025476 PMAQI
11th Nov 2025477 PMAQI
11th Nov 2025408 PMAQI
11th Nov 2025319 PMAQI
11th Nov 20253610 PMAQI
11th Nov 20252811 PMAQI
12th Nov 20252512 AMAQI
12th Nov 2025361 AMAQI
12th Nov 2025362 AMAQI
12th Nov 2025373 AMAQI
12th Nov 2025514 AMAQI
12th Nov 2025525 AMAQI
17°C12/23°C
12th Nov 2025486 AMAQI
12th Nov 2025447 AMAQI
12th Nov 2025408 AMAQI
12th Nov 2025289 AMAQI
12th Nov 20252210 AMAQI
12th Nov 20252511 AMAQI
12th Nov 20252812 PMAQI
12th Nov 2025251 PMAQI
12th Nov 2025222 PMAQI
12th Nov 2025223 PMAQI
12th Nov 2025224 PMAQI
12th Nov 2025285 PMAQI
12th Nov 2025316 PMAQI
12th Nov 2025287 PMAQI
12th Nov 2025208 PMAQI
12th Nov 2025119 PMAQI
12th Nov 20251110 PMAQI
12th Nov 20251111 PMAQI
13th Nov 20251612 AMAQI
13th Nov 2025201 AMAQI
13th Nov 2025202 AMAQI
13th Nov 2025223 AMAQI
13th Nov 2025224 AMAQI
13th Nov 2025255 AMAQI
16°C12/21°C
13th Nov 2025256 AMAQI
13th Nov 2025167 AMAQI
13th Nov 2025148 AMAQI
13th Nov 2025259 AMAQI
13th Nov 20252310 AMAQI
13th Nov 20252511 AMAQI
13th Nov 20252012 PMAQI
13th Nov 2025111 PMAQI
13th Nov 2025112 PMAQI
13th Nov 2025143 PMAQI
13th Nov 2025174 PMAQI
13th Nov 2025145 PMAQI
13th Nov 2025116 PMAQI
13th Nov 2025117 PMAQI
13th Nov 2025118 PMAQI
13th Nov 2025149 PMAQI
13th Nov 20252010 PMAQI
13th Nov 20251611 PMAQI
14th Nov 20251312 AMAQI
14th Nov 2025151 AMAQI
14th Nov 2025142 AMAQI
14th Nov 2025143 AMAQI
14th Nov 2025114 AMAQI
14th Nov 2025115 AMAQI
17°C14/18°C
14th Nov 2025116 AMAQI
14th Nov 2025117 AMAQI
14th Nov 2025118 AMAQI
14th Nov 2025129 AMAQI
14th Nov 20252410 AMAQI
14th Nov 20252211 AMAQI
14th Nov 20252812 PMAQI
14th Nov 2025421 PMAQI
14th Nov 2025392 PMAQI
14th Nov 2025393 PMAQI
14th Nov 2025394 PMAQI
14th Nov 2025305 PMAQI
14th Nov 2025226 PMAQI
14th Nov 2025257 PMAQI
14th Nov 2025288 PMAQI
14th Nov 2025289 PMAQI
14th Nov 20253410 PMAQI
14th Nov 20254211 PMAQI
15th Nov 20254412 AMAQI
15th Nov 2025471 AMAQI
15th Nov 2025422 AMAQI
15th Nov 2025333 AMAQI
15th Nov 2025334 AMAQI
15th Nov 2025305 AMAQI
14°C11/17°C
15th Nov 2025286 AMAQI
15th Nov 2025257 AMAQI
15th Nov 2025228 AMAQI
15th Nov 2025229 AMAQI
15th Nov 20252010 AMAQI
15th Nov 20252011 AMAQI
15th Nov 20252512 PMAQI
15th Nov 2025251 PMAQI
15th Nov 2025222 PMAQI
15th Nov 2025223 PMAQI
15th Nov 2025224 PMAQI
15th Nov 2025225 PMAQI
15th Nov 2025256 PMAQI
15th Nov 2025287 PMAQI
15th Nov 2025288 PMAQI
15th Nov 2025289 PMAQI
15th Nov 20252510 PMAQI
15th Nov 20253311 PMAQI
16th Nov 20253912 AMAQI
16th Nov 2025221 AMAQI
16th Nov 2025202 AMAQI
16th Nov 2025173 AMAQI
16th Nov 2025174 AMAQI
16th Nov 2025145 AMAQI
15°C11/20°C
16th Nov 2025116 AMAQI
16th Nov 2025117 AMAQI
16th Nov 2025148 AMAQI
16th Nov 2025179 AMAQI
16th Nov 20251710 AMAQI
16th Nov 20251711 AMAQI
16th Nov 20251712 PMAQI
16th Nov 2025171 PMAQI
16th Nov 2025202 PMAQI
16th Nov 2025223 PMAQI
16th Nov 2025224 PMAQI
16th Nov 2025205 PMAQI
16th Nov 2025206 PMAQI
16th Nov 2025207 PMAQI
16th Nov 2025178 PMAQI
16th Nov 2025179 PMAQI
16th Nov 20251710 PMAQI
16th Nov 20251711 PMAQI
17th Nov 20251712 AMAQI
17th Nov 2025141 AMAQI
17th Nov 2025112 AMAQI
17th Nov 2025113 AMAQI
17th Nov 2025114 AMAQI
17th Nov 2025115 AMAQI
15°C13/17°C
17th Nov 2025146 AMAQI
17th Nov 2025177 AMAQI
17th Nov 2025178 AMAQI
17th Nov 2025179 AMAQI
17th Nov 20251710 AMAQI
17th Nov 20251711 AMAQI
17th Nov 20251712 PMAQI
17th Nov 2025141 PMAQI
17th Nov 2025202 PMAQI
17th Nov 2025253 PMAQI
17th Nov 2025224 PMAQI
17th Nov 2025225 PMAQI
17th Nov 2025226 PMAQI
17th Nov 2025227 PMAQI
17th Nov 2025258 PMAQI
17th Nov 2025289 PMAQI
17th Nov 20252810 PMAQI
17th Nov 20252611 PMAQI
18th Nov 20252012 AMAQI
18th Nov 2025201 AMAQI
18th Nov 2025162 AMAQI
18th Nov 2025133 AMAQI
18th Nov 2025174 AMAQI
18th Nov 2025175 AMAQI
12°C11/16°C
18th Nov 2025236 AMAQI
18th Nov 2025267 AMAQI
18th Nov 2025258 AMAQI
18th Nov 2025289 AMAQI
18th Nov 20252810 AMAQI
18th Nov 20253411 AMAQI
18th Nov 20253612 PMAQI
18th Nov 2025281 PMAQI
18th Nov 2025162 PMAQI
18th Nov 2025143 PMAQI
18th Nov 2025204 PMAQI
18th Nov 2025255 PMAQI
18th Nov 2025256 PMAQI
18th Nov 2025227 PMAQI
18th Nov 2025258 PMAQI
18th Nov 2025369 PMAQI
18th Nov 20254710 PMAQI
18th Nov 20254711 PMAQI
19th Nov 20254812 AMAQI
19th Nov 2025531 AMAQI
19th Nov 2025482 AMAQI
19th Nov 2025383 AMAQI
19th Nov 2025294 AMAQI
19th Nov 2025225 AMAQI
12°C9/17°C
19th Nov 2025206 AMAQI
19th Nov 2025197 AMAQI
19th Nov 2025248 AMAQI
19th Nov 2025309 AMAQI
19th Nov 20253310 AMAQI
19th Nov 20253011 AMAQI
19th Nov 20252812 PMAQI
19th Nov 2025301 PMAQI
19th Nov 2025332 PMAQI
19th Nov 2025333 PMAQI
19th Nov 2025304 PMAQI
19th Nov 2025365 PMAQI
19th Nov 2025426 PMAQI
19th Nov 2025347 PMAQI
19th Nov 2025258 PMAQI
19th Nov 2025259 PMAQI
19th Nov 20253910 PMAQI
19th Nov 20254411 PMAQI
20th Nov 20253612 AMAQI
20th Nov 2025281 AMAQI
20th Nov 2025222 AMAQI
20th Nov 2025263 AMAQI
20th Nov 2025334 AMAQI
20th Nov 2025365 AMAQI
11°C8/14°C
20th Nov 2025396 AMAQI
20th Nov 2025307 AMAQI
20th Nov 2025268 AMAQI
20th Nov 2025209 AMAQI
20th Nov 20251910 AMAQI
20th Nov 20253011 AMAQI
20th Nov 20253212 PMAQI
20th Nov 2025221 PMAQI
20th Nov 2025202 PMAQI
20th Nov 2025173 PMAQI
20th Nov 2025144 PMAQI
20th Nov 2025165 PMAQI
20th Nov 2025186 PMAQI
20th Nov 2025117 PMAQI
20th Nov 2025258 PMAQI
20th Nov 2025369 PMAQI
20th Nov 20253010 PMAQI
20th Nov 20253211 PMAQI
21st Nov 20253712 AMAQI
21st Nov 2025311 AMAQI
21st Nov 2025282 AMAQI
21st Nov 2025223 AMAQI
21st Nov 2025174 AMAQI
21st Nov 2025195 AMAQI
12°C11/14°C
21st Nov 2025246 AMAQI
21st Nov 2025287 AMAQI
21st Nov 2025308 AMAQI
21st Nov 2025309 AMAQI
21st Nov 20252610 AMAQI
21st Nov 20252611 AMAQI
21st Nov 20253312 PMAQI
21st Nov 2025241 PMAQI
21st Nov 2025112 PMAQI
21st Nov 2025163 PMAQI
21st Nov 2025254 PMAQI
21st Nov 2025305 PMAQI
21st Nov 2025256 PMAQI
21st Nov 2025177 PMAQI
21st Nov 2025398 PMAQI
21st Nov 2025569 PMAQI
21st Nov 20255210 PMAQI
21st Nov 20254811 PMAQI
22nd Nov 20255012 AMAQI
22nd Nov 2025521 AMAQI
22nd Nov 2025502 AMAQI
22nd Nov 2025503 AMAQI
22nd Nov 2025504 AMAQI
22nd Nov 2025425 AMAQI
12°C9/19°C
22nd Nov 2025286 AMAQI
22nd Nov 2025257 AMAQI
22nd Nov 2025288 AMAQI
22nd Nov 2025239 AMAQI
22nd Nov 20253410 AMAQI
22nd Nov 20255611 AMAQI
22nd Nov 20255912 PMAQI
22nd Nov 2025561 PMAQI
22nd Nov 2025562 PMAQI
22nd Nov 2025473 PMAQI
22nd Nov 2025394 PMAQI
22nd Nov 2025305 PMAQI
22nd Nov 2025166 PMAQI
22nd Nov 2025117 PMAQI
22nd Nov 2025228 PMAQI
22nd Nov 2025439 PMAQI
22nd Nov 20255610 PMAQI
22nd Nov 20255711 PMAQI
23rd Nov 20255712 AMAQI
23rd Nov 2025641 AMAQI
23rd Nov 2025692 AMAQI
23rd Nov 2025683 AMAQI
23rd Nov 2025684 AMAQI
23rd Nov 2025675 AMAQI
13°C9/20°C
23rd Nov 2025606 AMAQI
23rd Nov 2025547 AMAQI
23rd Nov 2025508 AMAQI
23rd Nov 2025389 AMAQI
23rd Nov 20254610 AMAQI
23rd Nov 20255711 AMAQI
23rd Nov 20255312 PMAQI
23rd Nov 2025471 PMAQI
23rd Nov 2025482 PMAQI
23rd Nov 2025533 PMAQI
23rd Nov 2025534 PMAQI
23rd Nov 2025545 PMAQI
23rd Nov 2025536 PMAQI
23rd Nov 2025527 PMAQI
23rd Nov 2025538 PMAQI
23rd Nov 2025529 PMAQI
23rd Nov 20254810 PMAQI
23rd Nov 20254211 PMAQI
24th Nov 20254212 AMAQI
24th Nov 2025361 AMAQI
24th Nov 2025202 AMAQI
24th Nov 2025203 AMAQI
24th Nov 2025254 AMAQI
24th Nov 2025165 AMAQI
11°C8/14°C
24th Nov 2025226 AMAQI
24th Nov 2025287 AMAQI
24th Nov 2025258 AMAQI
24th Nov 2025259 AMAQI
24th Nov 20252610 AMAQI
24th Nov 20253711 AMAQI
24th Nov 20254812 PMAQI
24th Nov 2025531 PMAQI
24th Nov 2025532 PMAQI
24th Nov 2025543 PMAQI
24th Nov 2025554 PMAQI
24th Nov 2025535 PMAQI
24th Nov 2025476 PMAQI
24th Nov 2025507 PMAQI
24th Nov 2025568 PMAQI
24th Nov 2025609 PMAQI
24th Nov 20255810 PMAQI
24th Nov 20255411 PMAQI
25th Nov 20255612 AMAQI
25th Nov 2025541 AMAQI
25th Nov 2025522 AMAQI
25th Nov 2025503 AMAQI
25th Nov 2025384 AMAQI
25th Nov 2025305 AMAQI
12°C9/18°C
25th Nov 2025346 AMAQI
25th Nov 2025447 AMAQI
25th Nov 2025508 AMAQI
25th Nov 2025529 AMAQI
25th Nov 20255710 AMAQI
25th Nov 20255911 AMAQI
25th Nov 20255812 PMAQI
25th Nov 2025621 PMAQI
25th Nov 2025612 PMAQI
25th Nov 2025533 PMAQI
25th Nov 2025524 PMAQI
25th Nov 2025535 PMAQI
25th Nov 2025466 PMAQI
25th Nov 2025467 PMAQI
25th Nov 2025588 PMAQI
25th Nov 2025569 PMAQI
25th Nov 20255810 PMAQI
25th Nov 20255911 PMAQI
26th Nov 20255712 AMAQI
26th Nov 2025541 AMAQI
26th Nov 2025462 AMAQI
26th Nov 2025373 AMAQI
26th Nov 2025364 AMAQI
26th Nov 2025375 AMAQI
11°C7/17°C
26th Nov 2025316 AMAQI
6 AM26th Nov 2025257 AMAQI
26th Nov 2025248 AMAQI
26th Nov 2025319 AMAQI
26th Nov 20253910 AMAQI
26th Nov 20253911 AMAQI
11 AM26th Nov 20253912 PMAQI
26th Nov 2025461 PMAQI
26th Nov 2025482 PMAQI
26th Nov 2025443 PMAQI
26th Nov 2025444 PMAQI
5 PM
11 PM
5 AM
11°C5/19°C
Day time
Avg. Highest Time
12 PM - 1 PM
38AQI
2 hours / Day
60 hours / Month
Avg. Lowest Time
7 AM
26AQI
1 hours / Day
30 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 12 PM to 1 PM (Avg. 38), while the lowest AQI was between 7 AM to 7 AM (Avg. 26).
Night time
Avg. Highest Time
12 AM - 1 AM
39AQI
2 hours / Day
60 hours / Month
Avg. Lowest Time
7 PM
30AQI
1 hours / Day
30 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 12 AM to 1 AM (Avg. 39), while the lowest AQI was between 7 PM to 7 PM (Avg. 30).
2025 Days Vs Air Quality
Redwood City, California, United States
2025
96%
237
4%
9
Total number of days with different AQI categories in last 331 days in 2025 (34 days remaining)
Good
237 DaysModerate
9 DaysPoor
0 DaysUnhealthy
0 DaysSevere
0 DaysHazardous
0 DaysUnder WHO’s Safe Air Quality Limits: 96%
Health Risk Level:
Very Low
In 2025, 96% of 331 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
Redwood City, 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.
-1th undefined 2025
-1th undefined 2025
-1th undefined 2025
1st January 2025
2nd January 2025
3rd January 2025
4th January 2025
5th January 2025
6th January 2025
7th January 2025
8th January 2025
9th January 2025
10th January 2025
11th January 2025
12th January 2025
13th January 2025
14th January 2025
15th January 2025
16th January 2025
17th January 2025
18th January 2025
19th January 2025
20th January 2025
21st January 2025
22nd January 2025
23rd January 2025
24th January 2025
25th January 2025
26th January 2025
27th January 2025
28th January 2025
29th January 2025
30th January 2025
31st January 2025
1st February 2025
2nd February 2025
3rd February 2025
4th February 2025
5th February 2025
6th February 2025
7th February 2025
8th February 2025
9th February 2025
10th February 2025
11th February 2025
12th February 2025
13th February 2025
14th February 2025
15th February 2025
16th February 2025
17th February 2025
18th February 2025
19th February 2025
20th February 2025
21st February 2025
22nd February 2025
23rd February 2025
24th February 2025
25th February 2025
26th February 2025
27th February 2025
28th February 2025
1st March 2025
2nd March 2025
3rd March 2025
4th March 2025
5th March 2025
6th March 2025
7th March 2025
8th March 2025
9th March 2025
10th March 2025
11th March 2025
12th March 2025
13th March 2025
14th March 2025
15th March 2025
16th March 2025
17th March 2025
18th March 2025
19th March 2025
20th March 2025
21st March 2025
22nd March 2025
23rd March 2025
24th March 2025
25th March 2025
26th March 2025
18AQI
18AQI
27th March 2025
20AQI
20AQI
28th March 2025
25AQI
25AQI
29th March 2025
21AQI
21AQI
30th March 2025
18AQI
18AQI
31st March 2025
18AQI
18AQI
1st April 2025
19AQI
19AQI
2nd April 2025
20AQI
20AQI
3rd April 2025
21AQI
21AQI
4th April 2025
22AQI
22AQI
5th April 2025
22AQI
22AQI
6th April 2025
21AQI
21AQI
7th April 2025
17AQI
17AQI
8th April 2025
16AQI
16AQI
9th April 2025
20AQI
20AQI
10th April 2025
21AQI
21AQI
11th April 2025
18AQI
18AQI
12th April 2025
29AQI
29AQI
13th April 2025
37AQI
37AQI
14th April 2025
36AQI
36AQI
15th April 2025
26AQI
26AQI
16th April 2025
31AQI
31AQI
17th April 2025
23AQI
23AQI
18th April 2025
26AQI
26AQI
19th April 2025
35AQI
35AQI
20th April 2025
35AQI
35AQI
21st April 2025
41AQI
41AQI
22nd April 2025
37AQI
37AQI
23rd April 2025
40AQI
40AQI
24th April 2025
35AQI
35AQI
25th April 2025
19AQI
19AQI
26th April 2025
18AQI
18AQI
27th April 2025
27AQI
27AQI
28th April 2025
29AQI
29AQI
29th April 2025
35AQI
35AQI
30th April 2025
40AQI
40AQI
1st May 2025
36AQI
36AQI
2nd May 2025
37AQI
37AQI
3rd May 2025
36AQI
36AQI
4th May 2025
39AQI
39AQI
5th May 2025
34AQI
34AQI
6th May 2025
46AQI
46AQI
7th May 2025
44AQI
44AQI
8th May 2025
33AQI
33AQI
9th May 2025
37AQI
37AQI
10th May 2025
35AQI
35AQI
11th May 2025
24AQI
24AQI
12th May 2025
20AQI
20AQI
13th May 2025
20AQI
20AQI
14th May 2025
31AQI
31AQI
15th May 2025
38AQI
38AQI
16th May 2025
43AQI
43AQI
17th May 2025
25AQI
25AQI
18th May 2025
26AQI
26AQI
19th May 2025
31AQI
31AQI
20th May 2025
24AQI
24AQI
21st May 2025
41AQI
41AQI
22nd May 2025
35AQI
35AQI
23rd May 2025
26AQI
26AQI
24th May 2025
28AQI
28AQI
25th May 2025
21AQI
21AQI
26th May 2025
18AQI
18AQI
27th May 2025
29AQI
29AQI
28th May 2025
25AQI
25AQI
29th May 2025
19AQI
19AQI
30th May 2025
31AQI
31AQI
31st May 2025
51AQI
51AQI
1st June 2025
51AQI
51AQI
2nd June 2025
46AQI
46AQI
3rd June 2025
38AQI
38AQI
4th June 2025
54AQI
54AQI
5th June 2025
37AQI
37AQI
6th June 2025
28AQI
28AQI
7th June 2025
26AQI
26AQI
8th June 2025
19AQI
19AQI
9th June 2025
18AQI
18AQI
10th June 2025
21AQI
21AQI
11th June 2025
44AQI
44AQI
12th June 2025
46AQI
46AQI
13th June 2025
48AQI
48AQI
14th June 2025
43AQI
43AQI
15th June 2025
46AQI
46AQI
16th June 2025
40AQI
40AQI
17th June 2025
34AQI
34AQI
18th June 2025
31AQI
31AQI
19th June 2025
43AQI
43AQI
20th June 2025
40AQI
40AQI
21st June 2025
35AQI
35AQI
22nd June 2025
36AQI
36AQI
23rd June 2025
37AQI
37AQI
24th June 2025
24AQI
24AQI
25th June 2025
19AQI
19AQI
26th June 2025
21AQI
21AQI
27th June 2025
32AQI
32AQI
28th June 2025
38AQI
38AQI
29th June 2025
26AQI
26AQI
30th June 2025
22AQI
22AQI
1st July 2025
25AQI
25AQI
2nd July 2025
26AQI
26AQI
3rd July 2025
34AQI
34AQI
4th July 2025
29AQI
29AQI
5th July 2025
30AQI
30AQI
6th July 2025
30AQI
30AQI
7th July 2025
24AQI
24AQI
8th July 2025
20AQI
20AQI
9th July 2025
17AQI
17AQI
10th July 2025
23AQI
23AQI
11th July 2025
32AQI
32AQI
12th July 2025
33AQI
33AQI
13th July 2025
27AQI
27AQI
14th July 2025
20AQI
20AQI
15th July 2025
17AQI
17AQI
16th July 2025
18AQI
18AQI
17th July 2025
16AQI
16AQI
18th July 2025
18AQI
18AQI
19th July 2025
18AQI
18AQI
20th July 2025
22AQI
22AQI
21st July 2025
21AQI
21AQI
22nd July 2025
13AQI
13AQI
23rd July 2025
15AQI
15AQI
24th July 2025
15AQI
15AQI
25th July 2025
15AQI
15AQI
26th July 2025
15AQI
15AQI
27th July 2025
15AQI
15AQI
28th July 2025
17AQI
17AQI
29th July 2025
22AQI
22AQI
30th July 2025
21AQI
21AQI
31st July 2025
22AQI
22AQI
1st August 2025
21AQI
21AQI
2nd August 2025
21AQI
21AQI
3rd August 2025
30AQI
30AQI
4th August 2025
33AQI
33AQI
5th August 2025
25AQI
25AQI
6th August 2025
33AQI
33AQI
7th August 2025
25AQI
25AQI
8th August 2025
33AQI
33AQI
9th August 2025
39AQI
39AQI
10th August 2025
25AQI
25AQI
11th August 2025
26AQI
26AQI
12th August 2025
28AQI
28AQI
13th August 2025
23AQI
23AQI
14th August 2025
19AQI
19AQI
15th August 2025
36AQI
36AQI
16th August 2025
17AQI
17AQI
17th August 2025
16AQI
16AQI
18th August 2025
18AQI
18AQI
19th August 2025
21AQI
21AQI
20th August 2025
27AQI
27AQI
21st August 2025
43AQI
43AQI
22nd August 2025
48AQI
48AQI
23rd August 2025
32AQI
32AQI
24th August 2025
25AQI
25AQI
25th August 2025
31AQI
31AQI
26th August 2025
34AQI
34AQI
27th August 2025
42AQI
42AQI
28th August 2025
37AQI
37AQI
29th August 2025
26AQI
26AQI
30th August 2025
31AQI
31AQI
31st August 2025
37AQI
37AQI
1st September 2025
35AQI
35AQI
2nd September 2025
42AQI
42AQI
3rd September 2025
30AQI
30AQI
4th September 2025
26AQI
26AQI
5th September 2025
24AQI
24AQI
6th September 2025
27AQI
27AQI
7th September 2025
21AQI
21AQI
8th September 2025
20AQI
20AQI
9th September 2025
16AQI
16AQI
10th September 2025
17AQI
17AQI
11th September 2025
29AQI
29AQI
12th September 2025
28AQI
28AQI
13th September 2025
29AQI
29AQI
14th September 2025
19AQI
19AQI
15th September 2025
20AQI
20AQI
16th September 2025
32AQI
32AQI
17th September 2025
30AQI
30AQI
18th September 2025
36AQI
36AQI
19th September 2025
37AQI
37AQI
20th September 2025
38AQI
38AQI
21st September 2025
29AQI
29AQI
22nd September 2025
30AQI
30AQI
23rd September 2025
37AQI
37AQI
24th September 2025
46AQI
46AQI
25th September 2025
43AQI
43AQI
26th September 2025
48AQI
48AQI
27th September 2025
50AQI
50AQI
28th September 2025
36AQI
36AQI
29th September 2025
31AQI
31AQI
30th September 2025
24AQI
24AQI
1st October 2025
25AQI
25AQI
2nd October 2025
28AQI
28AQI
3rd October 2025
39AQI
39AQI
4th October 2025
49AQI
49AQI
5th October 2025
48AQI
48AQI
6th October 2025
46AQI
46AQI
7th October 2025
47AQI
47AQI
8th October 2025
47AQI
47AQI
9th October 2025
37AQI
37AQI
10th October 2025
35AQI
35AQI
11th October 2025
31AQI
31AQI
12th October 2025
32AQI
32AQI
13th October 2025
47AQI
47AQI
14th October 2025
29AQI
29AQI
15th October 2025
40AQI
40AQI
16th October 2025
44AQI
44AQI
17th October 2025
46AQI
46AQI
18th October 2025
52AQI
52AQI
19th October 2025
56AQI
56AQI
20th October 2025
52AQI
52AQI
21st October 2025
53AQI
53AQI
22nd October 2025
35AQI
35AQI
23rd October 2025
39AQI
39AQI
24th October 2025
28AQI
28AQI
25th October 2025
24AQI
24AQI
26th October 2025
27AQI
27AQI
27th October 2025
19AQI
19AQI
28th October 2025
20AQI
20AQI
29th October 2025
39AQI
39AQI
30th October 2025
45AQI
45AQI
31st October 2025
43AQI
43AQI
1st November 2025
40AQI
40AQI
2nd November 2025
42AQI
42AQI
3rd November 2025
42AQI
42AQI
4th November 2025
23AQI
23AQI
5th November 2025
20AQI
20AQI
6th November 2025
28AQI
28AQI
7th November 2025
31AQI
31AQI
8th November 2025
37AQI
37AQI
9th November 2025
47AQI
47AQI
10th November 2025
48AQI
48AQI
11th November 2025
48AQI
48AQI
12th November 2025
29AQI
29AQI
13th November 2025
18AQI
18AQI
14th November 2025
22AQI
22AQI
15th November 2025
30AQI
30AQI
16th November 2025
19AQI
19AQI
17th November 2025
18AQI
18AQI
18th November 2025
25AQI
25AQI
19th November 2025
36AQI
36AQI
20th November 2025
26AQI
26AQI
21st November 2025
30AQI
30AQI
22nd November 2025
41AQI
41AQI
23rd November 2025
56AQI
56AQI
24th November 2025
39AQI
39AQI
25th November 2025
52AQI
52AQI
26th November 2025
44AQI
44AQI
27th November 2025
28th November 2025
29th November 2025
30th November 2025
1st December 2025
2nd December 2025
3rd December 2025
4th December 2025
5th December 2025
6th December 2025
7th December 2025
8th December 2025
9th December 2025
10th December 2025
11th December 2025
12th December 2025
13th December 2025
14th December 2025
15th December 2025
16th December 2025
17th December 2025
18th December 2025
19th December 2025
20th December 2025
21st December 2025
22nd December 2025
23rd December 2025
24th December 2025
25th December 2025
26th December 2025
27th December 2025
28th December 2025
29th December 2025
30th December 2025
31st December 2025
20AQI
27AQI
32AQI
35AQI
22AQI
29AQI
31AQI
39AQI
34AQI
No. of days
Jan.Feb.Mar.Apr.MayJun.Jul.Aug.Sep.Oct.Nov.Dec.Total Days
202531AQI
6
30
30
1
28
2
31
31
30
27
4
24
2
237
9
Highest AQI recorded in
October39AQI
Lowest AQI recorded in
March20AQI
Most & Least Polluted Years Over the Last 1 Years
Most Polluted Year Recorded
2025(Avg.)
31AQILeast Polluted Year Recorded
2025(Avg.)
31AQIRedwood City's annual 2025 AQI (31) shows an average percentage change of NaN% (improved AQI) compared to previous years: .
