Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
January | 28°F | 47°F | 37°F | 2.7" |
February | 29°F | 50°F | 38°F | 2.3" |
March | 37°F | 60°F | 47°F | 3.2" |
April | 47°F | 71°F | 58°F | 3.4" |
May | 56°F | 78°F | 67°F | 4.6" |
June | 67°F | 87°F | 77°F | 5.3" |
July | 72°F | 91°F | 81°F | 4.2" |
August | 70°F | 90°F | 79°F | 3.2" |
September | 63°F | 83°F | 72°F | 3.5" |
October | 52°F | 72°F | 61°F | 5.0" |
November | 40°F | 61°F | 50°F | 2.5" |
December | 33°F | 52°F | 42°F | 3.8" |
Index | Falls Church | Virginia | National |
Air quality index | 47 | 58 | 42 |
Pollution index | 208,434 | 1,561,881 | 2,726,193 |
Measurement | Total |
Days measured | 365 |
Days with good air quality | 209 |
Days with moderate air quality | 145 |
Days w/ poor A.Q. for sensitive groups | 10 |
Days with unhealthy air quality | 1 |
Pollutant | Total |
Arsenic | 0.003% |
Benzene | 0.002% |
Carbon Tetrachloride | 0.001% |
Lead | 0.001% |
Mercury | 0.000% |
City | Population | Air Quality Index | National Avg. |
Buckhall, VA | 18,116 | 47 | 6.0% |
Centreville, VA | 74,230 | 47 | 6.0% |
Camp Springs, MD | 21,829 | 47 | 6.0% |
Friendly, MD | 9,984 | 47 | 6.0% |
National Harbor, MD | 3,998 | 47 | 6.0% |
Falls Church, VA | 14,309 | 47 | 6.0% |
City | Population | Air Quality Index | National Avg. |
Piney Green, NC | 14,309 | 37 | 26.0% |
Mountain Home, ID | 14,308 | 36 | 28.0% |
Lake Stickney, WA | 14,306 | 45 | 10.0% |
West Lealman, FL | 14,304 | 43 | 14.0% |
Phillipsburg, NJ | 14,303 | 42 | 16.0% |
Falls Church, VA | 14,309 | 47 | 6.0% |