Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
January | 27°F | 45°F | 35°F | 4.8" |
February | 28°F | 47°F | 36°F | 6.4" |
March | 36°F | 57°F | 46°F | 6.0" |
April | 45°F | 68°F | 56°F | 6.7" |
May | 55°F | 76°F | 65°F | 6.5" |
June | 64°F | 84°F | 74°F | 8.6" |
July | 68°F | 88°F | 78°F | 8.7" |
August | 66°F | 86°F | 76°F | 7.5" |
September | 60°F | 80°F | 69°F | 8.6" |
October | 49°F | 69°F | 58°F | 8.1" |
November | 38°F | 58°F | 47°F | 7.5" |
December | 32°F | 50°F | 40°F | 7.1" |
Index | Silver Hill | Maryland | National |
Air quality index | 47 | 43 | 42 |
Pollution index | 849,185 | 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 | 0.020% |
Carbon Tetrachloride | 0.002% |
Lead | 0.003% |
Mercury | 0.000% |
City | Population | Air Quality Index | National Avg. |
Cabin John, MD | 2,276 | 47 | 6.0% |
McLean, VA | 48,566 | 47 | 6.0% |
Cheverly, MD | 6,439 | 47 | 6.0% |
Edmonston, MD | 1,399 | 47 | 6.0% |
New Carrollton, MD | 12,925 | 47 | 6.0% |
Silver Hill, MD | 5,155 | 47 | 6.0% |
City | Population | Air Quality Index | National Avg. |
Massac, KY | 5,154 | 44 | 12.0% |
Floral City, FL | 5,158 | 30 | 40.0% |
Chisago City, MN | 5,159 | 46 | 8.0% |
Dunlap, TN | 5,159 | 46 | 8.0% |
Sterling, AK | 5,150 | 31 | 38.0% |
Silver Hill, MD | 5,155 | 47 | 6.0% |