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Primary air pollutant in the San Marcos area:
OZONE - 41 Good
Enjoy your outdoor activities.
Other Pollutants:
PM2.5 - 13 Good
PM10 - 17 Good
Primary Pollutant: OZONE - 41 Good
Secondary Pollutant: PM2.5 - 33 Good
Primary Pollutant: OZONE - 41 Good
Secondary Pollutant: PM2.5 - 28 Good