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Primary air pollutant in the San Marcos area:
PM2.5 - 42 Good
Enjoy your outdoor activities.
Other Pollutants:
PM10 - 15 Good
OZONE - 26 Good
Primary Pollutant: PM2.5 - 39 Good
Secondary Pollutant: OZONE - 29 Good
Primary Pollutant: PM2.5 - 33 Good
Secondary Pollutant: OZONE - 31 Good
Primary Pollutant: OZONE - 32 Good
Secondary Pollutant: PM2.5 - 28 Good