Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
January | 29°F | 48°F | 37°F | 2.3" |
February | 23°F | 44°F | 32°F | 2.7" |
March | 33°F | 56°F | 43°F | 7.5" |
April | 42°F | 68°F | 54°F | 6.5" |
May | 50°F | 76°F | 63°F | 15.9" |
June | 62°F | 87°F | 73°F | 3.1" |
July | 67°F | 89°F | 76°F | 13.9" |
August | 67°F | 90°F | 77°F | 4.3" |
September | 57°F | 85°F | 70°F | 0.7" |
October | 50°F | 74°F | 60°F | 3.0" |
November | 36°F | 61°F | 47°F | 4.5" |
December | 27°F | 47°F | 36°F | 4.2" |
Index | County Center | Virginia | National |
Air quality index | 47 | 58 | 42 |
Pollution index | 520,936 | 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 | 0.020% |
Benzene | 0.010% |
Carbon Tetrachloride | 0.002% |
Lead | 0.050% |
Mercury | 0.001% |
City | Population | Air Quality Index | National Avg. |
Fair Oaks, VA | 34,466 | 47 | 6.0% |
Linton Hall, VA | 41,426 | 47 | 6.0% |
Catlett, VA | 54 | 47 | 6.0% |
Centreville, VA | 74,230 | 47 | 6.0% |
Fort Belvoir, VA | 7,794 | 47 | 6.0% |
County Center, VA | 4,104 | 47 | 6.0% |
City | Population | Air Quality Index | National Avg. |
Fleetwood, PA | 4,104 | 42 | 16.0% |
Sinking Spring, PA | 4,104 | 42 | 16.0% |
Beavercreek, OR | 4,105 | 38 | 24.0% |
Fox Farm-College, WY | 4,105 | 43 | 14.0% |
Lonsdale, MN | 4,102 | 46 | 8.0% |
County Center, VA | 4,104 | 47 | 6.0% |