Home > USA > Virginia > Fairfax County > Difficult Run
Primary air pollutant in the Difficult Run area:
PM2.5 - 43 Good
Enjoy your outdoor activities.
Other Pollutants:
PM10 - 10 Good
OZONE - 21 Good
Primary Pollutant: PM2.5 - 33 Good
Primary Pollutant: PM2.5 - 39 Good
Primary Pollutant: PM2.5 - 50 Good
Primary Pollutant: PM2.5 - 50 Good