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Primary air pollutant in the Norwalk area:
PM2.5 - 62 Moderate
If you are unusually sensitive to particle pollution, consider reducing your activity level or shorten the amount of time you are active outdoors.
Other Pollutants:
PM10 - 40 Good
OZONE - 2 Good
Primary Pollutant: PM2.5 - 66 Moderate
Secondary Pollutant: PM10 - 36 Good
Secondary Pollutant: OZONE - 30 Good
Secondary Pollutant: CO - 18 Good
Secondary Pollutant: NO2 - 43 Good
Primary Pollutant: PM2.5 - 69 Moderate
Secondary Pollutant: PM10 - 41 Good
Secondary Pollutant: OZONE - 36 Good
Secondary Pollutant: CO - 29 Good
Secondary Pollutant: NO2 - 53 Moderate