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Primary air pollutant in the San Marino area:
OZONE - 4 Good
Enjoy your outdoor activities.
Primary Pollutant: NO2 - 35 Good
Secondary Pollutant: PM2.5 - 33 Good
Secondary Pollutant: PM10 - 34 Good
Secondary Pollutant: OZONE - 34 Good
Secondary Pollutant: CO - 10 Good
Primary Pollutant: PM2.5 - 68 Moderate
Secondary Pollutant: PM10 - 37 Good
Secondary Pollutant: OZONE - 37 Good
Secondary Pollutant: CO - 11 Good
Secondary Pollutant: NO2 - 35 Good