Colfax-City Hall, Placer, California Air Quality

Monitoring Station · Granite Bay, United States
40
Good
Air quality is satisfactory. Enjoy outdoor activities.
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Nearby Monitoring Stations

GoodModerateUSGUnhealthyVery UnhealthyHazardous
AQI Forecast Calibrated
40 4am
80
80
80 7am
80
80
80 10am
80
80
80 1pm
80
80
80 4pm
80
80
— 7pm
—
—
— 10pm
—
—
— 1am
—
—
CAMS model adj +26
34
54
54
54
54
54
54
54
54
54
54
54
54
54
54

Air Quality Forecast (24h)

PM2.59.6 µg/m³ ✓ WHO
Good
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Nearby Monitoring Stations

44
Auburn-11645 Atwood Road, Placer, California
22.2 km PM2.5: 10.6 µg/m³

Nearby Cities

63 Granite Bay 63 Rocklin 54 El Dorado Hills 52 Cameron Park 63 Folsom 52 Linda 63 Citrus Heights 63 Orangevale 63 Antelope

Station data from AQICN. AQI forecast from ECMWF CAMS. AQI calculated using US EPA standard. Updated 2026-08-08T07:24 UTC.