San Francisco
 
Data courtesy of:
 

AQI Forecast - http://www.epa.gov/airnow/today/forecast_aqi_20140423_sanfrancisco_ca.jpg
 
Legend: National Parks/Monuments National Parks/Monuments
 - http://www.epa.gov/airnow/today/cur_aqi_sanfrancisco_ca.jpg
 
Legend: National Parks/Monuments National Parks/Monuments
AQI Animation - http://www.epa.gov/airnow/today/anim_aqi_sanfrancisco_ca.gif
 
Legend: National Parks/Monuments National Parks/Monuments
 
AQI: Good (0 - 50) AQI: Moderate (51 - 100) AQI: Unhealthy for Sensitive Groups (101 - 150) AQI: Unhealthy (151 - 200) AQI: Very Unhealthy (201 - 300) AQI: Hazardous(301 - 500) Action DayAction Day
 
Local Air Quality Resources
Action Day Programs
 
State Air Quality Resources
Amador County Air Pollution Control District
American Lung Association (ALA) of California
Antelope Valley Air Quality Management District
BAAQMD Spare the Air 2002
Bay Area Air Quality Management District (BAAQMD)
Butte County Air Pollution Control District
California Air Resources Board (CARB)
California Environmental Protection Agency
California Environmental Protection Agency - Contact Us
Colusa County Air Pollution Control District
El Dorado County Air Quality Management District
Feather River Air Quality Management District
Glenn County Air Pollution Control District
Kern County Air Pollution Control District
Mendocino County Air Quality Management District
Mojave Desert Air Quality Management District
Monterey Bay Unified Air Pollution Control District
North Coast Unified Air Quality Management District
Northern Sierra Air Quality Management District
Placer County Air Pollution Control District
Sacramento Metro Air Quality Management District
Sacramento Metropolitan Air Quality Management District
San Diego County Air Pollution Control District
San Joaquin Valley Air Pollution Control District
San Luis Obispo County Air Pollution Control District
Santa Barbara County Air Pollution Control District
Shasta County Air Quality Management District
South Coast Air Quality Management District
Ventura County Air Pollution Control District
Yolo-Solano Air Quality Management District
Air Quality Forecast
Today's High Tomorrow's High
Air Quality Index (AQI)
39 
Good
Health Message: None
Air Quality Index (AQI)
33 
Good
Health Message: None
AQI - Pollutant Details
Ozone
39 
Good
Particles (PM2.5)
33 
Good

Current Conditions
Air Quality Index (AQI)
observed at 16:00 PDT
30
Good
Health Message: None
AQI - Pollutant Details
Ozone 30 Good
Particles (PM2.5) 9 Good

Past Air Quality Maps and Data
Yesterday's Maps and Data
Air Quality Maps Archives (by region)

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