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Primary air pollutant in the National City area:
PM2.5 - 84 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 - 11 Good
PM10 - 72 Moderate
Primary Pollutant: PM2.5 - 99 Moderate
Secondary Pollutant: OZONE - 34 Good
Primary Pollutant: PM2.5 - 75 Moderate
Secondary Pollutant: OZONE - 37 Good
Primary Pollutant: PM2.5 - 44 Good
Secondary Pollutant: OZONE - 36 Good
Primary Pollutant: PM2.5 - 50 Good
Secondary Pollutant: OZONE - 39 Good