Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
January | 28°F | 43°F | 34°F | 1.3" |
February | 30°F | 47°F | 37°F | 0.4" |
March | 37°F | 57°F | 46°F | 1.8" |
April | 47°F | 69°F | 57°F | 0.8" |
May | 56°F | 76°F | 65°F | 2.5" |
June | 64°F | 84°F | 73°F | 0.1" |
July | 68°F | 89°F | 77°F | 5.9" |
August | 66°F | 86°F | 75°F | 2.6" |
September | 60°F | 80°F | 69°F | 4.2" |
October | 49°F | 69°F | 57°F | 2.4" |
November | 38°F | 57°F | 46°F | 0.9" |
December | 33°F | 48°F | 40°F | 0.6" |
Index | Charlotte Hall | Maryland | National |
Air quality index | 47 | 43 | 42 |
Pollution index | 384,133 | 5,342,367 | 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 | 0.010% |
Benzene | 0.010% |
Carbon Tetrachloride | 0.001% |
Lead | 0.003% |
Mercury | 0.000% |
City | Population | Air Quality Index | National Avg. |
Prince Frederick, MD | 2,709 | 41 | 18.0% |
Leonardtown, MD | 3,795 | 41 | 18.0% |
Broomes Island, MD | 513 | 41 | 18.0% |
Baden, MD | 1,574 | 47 | 6.0% |
Golden Beach, MD | 3,620 | 47 | 6.0% |
Charlotte Hall, MD | 1,740 | 47 | 6.0% |
City | Population | Air Quality Index | National Avg. |
Blackwater, AZ | 1,740 | 74 | 48.0% |
Boronda, CA | 1,740 | 37 | 26.0% |
Fern Acres, HI | 1,740 | 16 | 68.0% |
Wilder, ID | 1,740 | 36 | 28.0% |
Richmond, ME | 1,740 | 28 | 44.0% |
Charlotte Hall, MD | 1,740 | 47 | 6.0% |