Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
January | 24°F | 46°F | 34°F | 2.7" |
February | 25°F | 48°F | 36°F | 2.1" |
March | 33°F | 58°F | 45°F | 3.2" |
April | 43°F | 71°F | 56°F | 3.7" |
May | 52°F | 78°F | 65°F | 5.6" |
June | 61°F | 86°F | 74°F | 4.5" |
July | 66°F | 90°F | 78°F | 4.2" |
August | 65°F | 88°F | 76°F | 2.8" |
September | 58°F | 82°F | 69°F | 3.5" |
October | 46°F | 71°F | 58°F | 5.4" |
November | 35°F | 59°F | 46°F | 2.6" |
December | 29°F | 50°F | 39°F | 3.8" |
Index | Dranesville | Virginia | National |
Air quality index | 47 | 58 | 42 |
Pollution index | 14,693,900 | 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 | 0.190% |
Benzene | 0.210% |
Carbon Tetrachloride | 0.060% |
Lead | 0.060% |
Mercury | 0.010% |
City | Population | Air Quality Index | National Avg. |
McNair, VA | 20,776 | 47 | 6.0% |
Brookeville, MD | 151 | 47 | 6.0% |
Laytonsville, MD | 480 | 47 | 6.0% |
Redland, MD | 17,475 | 47 | 6.0% |
Brookmont, MD | 3,925 | 47 | 6.0% |
Dranesville, VA | 11,929 | 47 | 6.0% |
City | Population | Air Quality Index | National Avg. |
Union, MO | 11,931 | 54 | 8.0% |
Lake Los Angeles, CA | 11,926 | 72 | 44.0% |
Healdsburg, CA | 11,924 | 34 | 32.0% |
St. Peter, MN | 11,934 | 46 | 8.0% |
Rossmoor, CA | 11,923 | 72 | 44.0% |
Dranesville, VA | 11,929 | 47 | 6.0% |