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
99 6pm
67
78
70 9pm
67
74
74 12am
74
74
74 3am
74
74
74 6am
74
74
— 9am
—
—
— 12pm
—
—
— 3pm
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Station readings
99
78
70
CAMS model adj +40
27
27
27
27
27
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

57
Redwood City, San Mateo, California
0.0 km PM2.5: 15.0 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
24
N Foothhill Blvd
21.4 km PM2.5: 5.8 µg/m³
20
Environment Education Center
22.6 km PM2.5: 4.7 µg/m³
28
JFK Middle School
23.4 km PM2.5: 6.7 µg/m³
26
Belle Air School
23.7 km PM2.5: 6.3 µg/m³

Nearby Cities

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

Station data from AQICN. AQI forecast from ECMWF CAMS. AQI calculated using US EPA standard. Updated 2026-07-21T21:53 UTC.