Colfax-City Hall, Placer, California Air Quality

Monitoring Station · Granite Bay, United States
60
Moderate
Unusually sensitive people should consider reducing prolonged outdoor exertion.
Last Reading

Nearby Monitoring Stations

GoodModerateUSGUnhealthyVery UnhealthyHazardous
AQI Forecast Calibrated
64 7pm
50
60
50 10pm
43
43
50 1am
50
50
50 4am
50
50
50 7am
50
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— 10am
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Station readings
64
60
CAMS model adj +16
34
34
34
34
27
27
34
34
34
34
34
34
34
34

Air Quality Forecast (24h)

PM2.516.4 µg/m³ ×1.1 WHO
Moderate
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Nearby Monitoring Stations

74
Auburn-11645 Atwood Road, Placer, California
22.2 km PM2.5: 23.0 µg/m³
114
Auburn-11645 Atwood Road, Placer, California
22.2 km PM2.5: 40.8 µg/m³

Nearby Cities

48 Granite Bay 33 Rocklin 53 El Dorado Hills 53 Cameron Park 53 Folsom 32 Linda 29 Citrus Heights 41 Orangevale 25 Antelope

Station data from AQICN. AQI forecast from ECMWF CAMS. AQI calculated using US EPA standard. Updated 2026-07-21T22:37 UTC.