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Primary air pollutant in the Round Hill area:
PM2.5 - 56 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:
OZONE - 6 Good
PM10 - 19 Good
Primary Pollutant: PM2.5 - 28 Good
Primary Pollutant: PM2.5 - 33 Good
Primary Pollutant: PM2.5 - 44 Good
Primary Pollutant: PM2.5 - 50 Good