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				| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation | 
| January | 25°F | 47°F | 35°F | 3.4" | 
| February | 26°F | 48°F | 36°F | 2.8" | 
| March | 35°F | 60°F | 46°F | 4.1" | 
| April | 44°F | 73°F | 58°F | 3.9" | 
| May | 52°F | 78°F | 64°F | 4.6" | 
| June | 61°F | 86°F | 72°F | 4.9" | 
| July | 64°F | 88°F | 75°F | 6.2" | 
| August | 63°F | 87°F | 74°F | 3.8" | 
| September | 57°F | 82°F | 68°F | 3.2" | 
| October | 45°F | 71°F | 57°F | 3.7" | 
| November | 35°F | 61°F | 46°F | 2.6" | 
| December | 30°F | 50°F | 39°F | 4.4" | 
| Index | Charleston | West Virginia | National | 
| Air quality index | 40 | 126 | 42 | 
| Pollution index | 953,270 | 1,996,538 | 2,726,193 | 
| Measurement | Total | 
| Days measured | 365 | 
| Days with good air quality | 314 | 
| Days with moderate air quality | 51 | 
| Days w/ poor A.Q. for sensitive groups | 0 | 
| Days with unhealthy air quality | 0 | 
| Pollutant | Total | 
| Arsenic | 0.002% | 
| Benzene | 0.010% | 
| Carbon Tetrachloride | 0.002% | 
| Lead | 0.010% | 
| Mercury | 0.003% | 
| City | Population | Air Quality Index | National Avg. | 
| Sissonville, WV | 3,472 | 40 | 20.0% | 
| Jefferson, WV | 719 | 40 | 20.0% | 
| Tornado, WV | 976 | 40 | 20.0% | 
| Racine, WV | 476 | 40 | 20.0% | 
| Chesapeake, WV | 1,783 | 40 | 20.0% | 
| Charleston, WV | 47,273 | 40 | 20.0% | 
| City | Population | Air Quality Index | National Avg. | 
| Glenview, IL | 47,218 | 55 | 10.0% | 
| Charlottesville, VA | 47,217 | 40 | 20.0% | 
| Beavercreek, OH | 47,343 | 47 | 6.0% | 
| Marana, AZ | 47,164 | 47 | 6.0% | 
| Roseville, MI | 47,160 | 56 | 12.0% | 
| Charleston, WV | 47,273 | 40 | 20.0% |