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				| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation | 
| January | 21°F | 39°F | 30°F | 2.9" | 
| February | 21°F | 40°F | 31°F | 3.1" | 
| March | 29°F | 49°F | 39°F | 3.5" | 
| April | 40°F | 63°F | 51°F | 4.2" | 
| May | 50°F | 73°F | 61°F | 3.8" | 
| June | 60°F | 81°F | 70°F | 5.1" | 
| July | 66°F | 86°F | 76°F | 4.5" | 
| August | 64°F | 84°F | 73°F | 4.1" | 
| September | 57°F | 78°F | 67°F | 3.5" | 
| October | 46°F | 66°F | 55°F | 5.2" | 
| November | 35°F | 54°F | 44°F | 3.3" | 
| December | 27°F | 43°F | 35°F | 4.2" | 
| Index | Blue Hills | Connecticut | National | 
| Air quality index | 41 | 43 | 42 | 
| Pollution index | 2,806,150 | 8,629,883 | 2,726,193 | 
| Measurement | Total | 
| Days measured | 365 | 
| Days with good air quality | 291 | 
| Days with moderate air quality | 66 | 
| Days w/ poor A.Q. for sensitive groups | 7 | 
| Days with unhealthy air quality | 1 | 
| Pollutant | Total | 
| Arsenic | 0.004% | 
| Benzene | 0.030% | 
| Carbon Tetrachloride | 0.010% | 
| Lead | 0.040% | 
| Mercury | 0.010% | 
| City | Population | Air Quality Index | National Avg. | 
| Collinsville, CT | 3,729 | 37 | 26.0% | 
| New Hartford Center, CT | 1,210 | 37 | 26.0% | 
| Bristol, CT | 60,039 | 37 | 26.0% | 
| Hazardville, CT | 6,216 | 40 | 20.0% | 
| Southwood Acres, CT | 8,352 | 40 | 20.0% | 
| Blue Hills, CT | 2,600 | 41 | 18.0% | 
| City | Population | Air Quality Index | National Avg. | 
| Fairview, OK | 2,600 | 48 | 4.0% | 
| Indian Hills, TX | 2,600 | 42 | 16.0% | 
| Sibley, IA | 2,599 | 36 | 28.0% | 
| Christopher, IL | 2,601 | 43 | 14.0% | 
| Chesterfield, IN | 2,601 | 42 | 16.0% | 
| Blue Hills, CT | 2,600 | 41 | 18.0% |