Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
January | 28°F | 46°F | 36°F | 2.6" |
February | 29°F | 49°F | 38°F | 2.2" |
March | 37°F | 58°F | 46°F | 3.4" |
April | 47°F | 70°F | 57°F | 3.8" |
May | 57°F | 76°F | 66°F | 4.4" |
June | 66°F | 85°F | 75°F | 4.8" |
July | 71°F | 89°F | 79°F | 3.5" |
August | 69°F | 87°F | 77°F | 3.1" |
September | 62°F | 81°F | 71°F | 4.2" |
October | 50°F | 70°F | 59°F | 4.3" |
November | 39°F | 59°F | 48°F | 2.8" |
December | 32°F | 50°F | 40°F | 3.4" |
Index | Dahlgren | Virginia | National |
Air quality index | 47 | 58 | 42 |
Pollution index | 1,217,530 | 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 | 0.001% |
Benzene | 0.020% |
Carbon Tetrachloride | 0.001% |
Lead | 0.000% |
Mercury | 0.001% |
City | Population | Air Quality Index | National Avg. |
Port Royal, VA | 151 | 44 | 12.0% |
Rock Point, MD | 63 | 47 | 6.0% |
Quantico Base, VA | 5,283 | 47 | 6.0% |
Bryantown, MD | 464 | 47 | 6.0% |
Dahlgren Center, VA | 696 | 47 | 6.0% |
Dahlgren, VA | 3,528 | 47 | 6.0% |
City | Population | Air Quality Index | National Avg. |
Studholm, NB | 3,528 | n/a | |
Hubbard, OR | 3,527 | 32 | 36.0% |
Camden, DE | 3,529 | 42 | 16.0% |
Hurley, NY | 3,529 | 36 | 28.0% |
Boardman, OR | 3,529 | 37 | 26.0% |
Dahlgren, VA | 3,528 | 47 | 6.0% |