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
—
—
11am
—
—
—
2pm
—
—
—
5pm
—
—
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
Nearby Monitoring Stations
47
Redwood City, San Mateo, California
23
Berkeley-Palo Alto
24
Emerald Hills
26
Acterra!
23
N Foothhill Blvd
19
Environment Education Center
28
JFK Middle School
19
Belle Air School
Nearby Cities
Station data from AQICN. AQI forecast from ECMWF CAMS. AQI calculated using US EPA standard. Updated 2026-07-21T23:13 UTC.