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Primary air pollutant in the San Marcos area:
OZONE - 43 Good
Enjoy your outdoor activities.
Other Pollutants:
PM2.5 - 29 Good
PM10 - 15 Good
Primary Pollutant: OZONE - 51 Moderate
Secondary Pollutant: PM2.5 - 17 Good
Primary Pollutant: OZONE - 44 Good
Secondary Pollutant: PM2.5 - 22 Good
Primary Pollutant: OZONE - 43 Good
Secondary Pollutant: PM2.5 - 39 Good
Primary Pollutant: PM2.5 - 50 Good
Secondary Pollutant: OZONE - 44 Good