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Primary air pollutant in the San Francisco area:
OZONE - 24 Good
Enjoy your outdoor activities.
Primary Pollutant: PM2.5 - 44 Good
Primary Pollutant: PM2.5 - 39 Good
Primary Pollutant: PM2.5 - 44 Good
Primary Pollutant: PM2.5 - 0 Moderate
Primary Pollutant: PM2.5 - 0 Moderate
Primary Pollutant: OZONE - 0 Good