Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
January | 26°F | 45°F | 35°F | 4.9" |
February | 27°F | 47°F | 36°F | 2.4" |
March | 35°F | 58°F | 45°F | 3.4" |
April | 43°F | 70°F | 56°F | 3.2" |
May | 51°F | 77°F | 63°F | 6.1" |
June | 60°F | 84°F | 71°F | 6.8" |
July | 63°F | 87°F | 74°F | 8.1" |
August | 62°F | 86°F | 73°F | 4.8" |
September | 55°F | 80°F | 66°F | 6.1" |
October | 45°F | 69°F | 55°F | 5.8" |
November | 35°F | 57°F | 45°F | 1.9" |
December | 30°F | 49°F | 38°F | 3.6" |
Index | Keyser | West Virginia | National |
Air quality index | 36 | 126 | 42 |
Pollution index | 1,427,850 | 1,996,538 | 2,726,193 |
Measurement | Total |
Days measured | 359 |
Days with good air quality | 340 |
Days with moderate air quality | 19 |
Days w/ poor A.Q. for sensitive groups | 0 |
Days with unhealthy air quality | 0 |
Pollutant | Total |
Arsenic | 0.003% |
Benzene | 0.004% |
Carbon Tetrachloride | 0.001% |
Lead | 0.001% |
Mercury | 0.010% |
City | Population | Air Quality Index | National Avg. |
Detmold, MD | 256 | 36 | 28.0% |
McCoole, MD | 515 | 36 | 28.0% |
Piedmont, WV | 928 | 36 | 28.0% |
Carlos, MD | 58 | 36 | 28.0% |
Lonaconing, MD | 1,282 | 36 | 28.0% |
Keyser, WV | 4,956 | 36 | 28.0% |
City | Population | Air Quality Index | National Avg. |
Watseka, IL | 4,956 | 42 | 16.0% |
West Sayville, NY | 4,956 | 43 | 14.0% |
Barling, AR | 4,957 | 36 | 28.0% |
Needles, CA | 4,959 | 13 | 74.0% |
Perry, OK | 4,959 | 40 | 20.0% |
Keyser, WV | 4,956 | 36 | 28.0% |