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Primary air pollutant in the National City area:
PM2.5 - 49 Good
Enjoy your outdoor activities.
Other Pollutants:
OZONE - 29 Good
PM10 - 24 Good
Primary Pollutant: OZONE - 50 Good
Secondary Pollutant: PM2.5 - 28 Good
Primary Pollutant: OZONE - 44 Good
Secondary Pollutant: PM2.5 - 33 Good