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Air near San Francisco 1 AM - 2 AM PST
PM2.5
N/A
μg/m³
OZONE
N/A
ppb
Map sites near San Francisco
Air Quality Color Key
Good
Hazardous
Check your local air district website for air quality alerts where you live.
Inhalable Particles:
U.S. EPA 24-hour Average (μg/m³)
0-12.0
Good
12.1-35.4
Moderate
35.5-55.4
USG*
55.5-150.4
Unhealthy
150.5-250.4
Very Unhealthy
250.5+
Hazardous
Ozone:
U.S. EPA 8-hour Average (ppb)
0-54
Good
55-70
Moderate
71-85
USG*
86-105
Unhealthy
106-200
Very Unhealthy
200+
Hazardous
*USG: Unhealthy for Sensitive Groups. This range and above exceeds federal clean air standards.