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				| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation | 
| January | 22°F | 40°F | 30°F | 3.2" | 
| February | 22°F | 41°F | 31°F | 2.6" | 
| March | 32°F | 54°F | 42°F | 4.4" | 
| April | 42°F | 68°F | 55°F | 3.8" | 
| May | 52°F | 76°F | 64°F | 3.6" | 
| June | 61°F | 85°F | 73°F | 4.8" | 
| July | 65°F | 87°F | 76°F | 4.8" | 
| August | 64°F | 86°F | 75°F | 3.7" | 
| September | 57°F | 80°F | 68°F | 3.6" | 
| October | 45°F | 68°F | 56°F | 3.9" | 
| November | 34°F | 56°F | 44°F | 2.7" | 
| December | 27°F | 44°F | 35°F | 3.9" | 
| Index | Columbus | Ohio | National | 
| Air quality index | 46 | 40 | 42 | 
| Pollution index | 21,574,800 | 4,472,386 | 2,726,193 | 
| Measurement | Total | 
| Days measured | 365 | 
| Days with good air quality | 237 | 
| Days with moderate air quality | 127 | 
| Days w/ poor A.Q. for sensitive groups | 1 | 
| Days with unhealthy air quality | 0 | 
| Pollutant | Total | 
| Arsenic | 0.030% | 
| Benzene | 0.230% | 
| Carbon Tetrachloride | 0.100% | 
| Lead | 0.190% | 
| Mercury | 0.010% | 
| City | Population | Air Quality Index | National Avg. | 
| Gahanna, OH | 35,442 | 46 | 8.0% | 
| Marble Cliff, OH | 689 | 46 | 8.0% | 
| Powell, OH | 13,353 | 46 | 8.0% | 
| Whitehall, OH | 18,944 | 46 | 8.0% | 
| Lake Darby, OH | 4,133 | 46 | 8.0% | 
| Columbus, OH | 889,079 | 46 | 8.0% | 
| City | Population | Air Quality Index | National Avg. | 
| Fort Worth, TX | 892,221 | 51 | 2.0% | 
| Jacksonville, FL | 902,488 | 43 | 14.0% | 
| San Francisco, CA | 874,784 | 40 | 20.0% | 
| Charlotte, NC | 873,570 | 49 | 2.0% | 
| Indianapolis, IN | 869,387 | 54 | 8.0% | 
| Columbus, OH | 889,079 | 46 | 8.0% |