Redwood City, San Mateo, California Air Quality

Monitoring Station · Redwood City, United States
70
Moderate
Unusually sensitive people should consider reducing prolonged outdoor exertion.
Last Reading

Nearby Monitoring Stations

GoodModerateUSGUnhealthyVery UnhealthyHazardous
AQI Forecast Calibrated
78 8pm
70
69
76 11pm
76
76
76 2am
76
76
76 5am
76
76
76 8am
76
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— 11am
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— 2pm
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— 5pm
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Station readings
78
70
CAMS model adj +42
27
27
27
34
34
34
34
34
34
34
34
34
34
34

Air Quality Forecast (24h)

PM2.521.1 µg/m³ ×1.4 WHO
Moderate
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Nearby Monitoring Stations

47
Redwood City, San Mateo, California
0.0 km PM2.5: 11.3 µg/m³
23
Berkeley-Palo Alto
5.9 km PM2.5: 5.4 µg/m³
24
Emerald Hills
6.5 km PM2.5: 5.8 µg/m³
26
Acterra!
10.5 km PM2.5: 6.2 µg/m³
23
N Foothhill Blvd
21.4 km PM2.5: 5.6 µg/m³
19
Environment Education Center
22.6 km PM2.5: 4.6 µg/m³
28
JFK Middle School
23.4 km PM2.5: 6.6 µg/m³
19
Belle Air School
23.7 km PM2.5: 4.6 µg/m³

Nearby Cities

31 Redwood City 28 Menlo Park 28 San Carlos 24 East Palo Alto 23 Palo Alto 27 Belmont 27 Foster City 25 Los Altos 26 San Mateo

Station data from AQICN. AQI forecast from ECMWF CAMS. AQI calculated using US EPA standard. Updated 2026-07-21T23:13 UTC.