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Primary air pollutant in the San Marino area:
OZONE - 27 Good
Enjoy your outdoor activities.
Primary Pollutant: OZONE - 40 Good
Secondary Pollutant: PM2.5 - 28 Good
Secondary Pollutant: PM10 - 17 Good
Secondary Pollutant: CO - 3 Good
Secondary Pollutant: NO2 - 9 Good
Primary Pollutant: OZONE - 44 Good
Secondary Pollutant: PM2.5 - 28 Good
Secondary Pollutant: PM10 - 19 Good
Secondary Pollutant: CO - 3 Good
Secondary Pollutant: NO2 - 14 Good