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 | Greenbelt | Maryland | National |
Air quality index | 47 | 43 | 42 |
Pollution index | 15,133,000 | 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 | 0.070% |
Benzene | 0.130% |
Carbon Tetrachloride | 0.060% |
Lead | 0.070% |
Mercury | 0.130% |
City | Population | Air Quality Index | National Avg. |
Odenton, MD | 42,258 | 46 | 8.0% |
Ferndale, MD | 17,732 | 46 | 8.0% |
Jessup, MD | 10,458 | 46 | 8.0% |
Severn, MD | 53,374 | 46 | 8.0% |
Linthicum, MD | 10,116 | 46 | 8.0% |
Greenbelt, MD | 23,253 | 47 | 6.0% |
City | Population | Air Quality Index | National Avg. |
Cottage Lake, WA | 23,239 | 45 | 10.0% |
Auburn, ME | 23,267 | 31 | 38.0% |
Rock Springs, WY | 23,238 | 46 | 8.0% |
Roseburg, OR | 23,237 | 24 | 52.0% |
Avon, OH | 23,233 | 50 | = 100 |
Greenbelt, MD | 23,253 | 47 | 6.0% |