Redwood City, San Mateo, California Air Quality

Monitoring Station · Redwood City, United States
47
Good
Air quality is satisfactory. Enjoy outdoor activities.
Last Reading

Nearby Monitoring Stations

GoodModerateUSGUnhealthyVery UnhealthyHazardous
AQI Forecast Calibrated
57 8pm
47
54
61 11pm
61
61
61 2am
61
61
61 5am
61
61
61 8am
61
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— 11am
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— 2pm
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— 5pm
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Station readings
57
47
CAMS model adj +27
27
27
27
34
34
34
34
34
34
34
34
34
34
34

Air Quality Forecast (24h)

PM2.511.3 µg/m³ ✓ WHO
Good
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Nearby Monitoring Stations

70
Redwood City, San Mateo, California
0.0 km PM2.5: 21.1 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.