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				| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation | 
| January | 20°F | 39°F | 29°F | 3.5" | 
| February | 21°F | 42°F | 31°F | 2.6" | 
| March | 32°F | 55°F | 43°F | 4.0" | 
| April | 42°F | 68°F | 55°F | 5.3" | 
| May | 52°F | 76°F | 64°F | 4.8" | 
| June | 62°F | 85°F | 73°F | 5.7" | 
| July | 65°F | 87°F | 76°F | 4.9" | 
| August | 65°F | 87°F | 75°F | 3.3" | 
| September | 57°F | 81°F | 68°F | 3.4" | 
| October | 45°F | 68°F | 56°F | 3.2" | 
| November | 33°F | 55°F | 44°F | 3.3" | 
| December | 25°F | 42°F | 33°F | 4.1" | 
| Index | Greenwood | Indiana | National | 
| Air quality index | 54 | 56 | 42 | 
| Pollution index | 2,395,300 | 2,719,453 | 2,726,193 | 
| Measurement | Total | 
| Days measured | 365 | 
| Days with good air quality | 148 | 
| Days with moderate air quality | 212 | 
| Days w/ poor A.Q. for sensitive groups | 5 | 
| Days with unhealthy air quality | 0 | 
| Pollutant | Total | 
| Arsenic | 0.003% | 
| Benzene | 0.040% | 
| Carbon Tetrachloride | 0.010% | 
| Lead | 0.010% | 
| Mercury | 0.001% | 
| City | Population | Air Quality Index | National Avg. | 
| Trafalgar, IN | 1,244 | 41 | 18.0% | 
| Painted Hills, IN | 525 | 42 | 16.0% | 
| Brooklyn, IN | 2,633 | 54 | 8.0% | 
| New Whiteland, IN | 6,178 | 54 | 8.0% | 
| Plainfield, IN | 34,224 | 54 | 8.0% | 
| Greenwood, IN | 58,784 | 54 | 8.0% | 
| City | Population | Air Quality Index | National Avg. | 
| Great Falls, MT | 58,717 | 21 | 58.0% | 
| South Whittier, CA | 58,616 | 72 | 44.0% | 
| Corvallis, OR | 58,612 | 17 | 66.0% | 
| Springfield, OH | 58,957 | 45 | 10.0% | 
| Porterville, CA | 59,056 | 66 | 32.0% | 
| Greenwood, IN | 58,784 | 54 | 8.0% |