PM2.5 in San Francisco, CA

Real-time Fine Particulate Matter monitoring and health recommendations

Current PM2.5 Levels

44
Good

Overall AQI

69
µg/m³
AQI 44

About Fine Particulate Matter

Tiny particles less than 2.5 micrometers that can penetrate deep into lungs and bloodstream.

Measured in µg/m³

Health Impact

Good

Air quality is considered satisfactory, and air pollution poses little or no risk.

Sources of PM2.5

• Vehicle exhaust and combustion engines

• Industrial emissions and manufacturing

• Wildfires and wood burning

• Construction and road dust

Other Pollutants

PM10
Coarse Particulate Matter
Ozone
Ground-level Ozone
Ozone
Ground-level Ozone
NO2
Nitrogen Dioxide
NO2
Nitrogen Dioxide

Full Air Quality Report

View all pollutants and comprehensive air quality data for San Francisco.

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See how PM2.5 levels in San Francisco compare to other cities

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