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Primary air pollutant in the Salem area:
PM2.5 - 66 Moderate
If you are unusually sensitive to particle pollution, consider reducing your activity level or shorten the amount of time you are active outdoors.
Primary Pollutant: PM2.5 - 70 Moderate
Secondary Pollutant: OZONE - 25 Good
Primary Pollutant: PM2.5 - 35 Good
Secondary Pollutant: OZONE - 30 Good