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				| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation | 
| January | 18°F | 38°F | 28°F | 3.3" | 
| February | 18°F | 40°F | 29°F | 3.6" | 
| March | 26°F | 50°F | 38°F | 3.6" | 
| April | 37°F | 65°F | 50°F | 4.0" | 
| May | 47°F | 75°F | 60°F | 4.0" | 
| June | 57°F | 82°F | 69°F | 5.5" | 
| July | 63°F | 88°F | 75°F | 4.9" | 
| August | 60°F | 86°F | 72°F | 4.9" | 
| September | 54°F | 80°F | 66°F | 3.9" | 
| October | 43°F | 67°F | 54°F | 5.9" | 
| November | 32°F | 55°F | 43°F | 3.2" | 
| December | 24°F | 44°F | 33°F | 4.5" | 
| Index | Broad Brook | Connecticut | National | 
| Air quality index | 41 | 43 | 42 | 
| Pollution index | 7,859,360 | 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 | 0.030% | 
| Benzene | 0.070% | 
| Carbon Tetrachloride | 0.030% | 
| Lead | 0.320% | 
| Mercury | 0.070% | 
| City | Population | Air Quality Index | National Avg. | 
| Coventry Lake, CT | 2,135 | 33 | 34.0% | 
| South Coventry, CT | 1,413 | 33 | 34.0% | 
| Storrs, CT | 16,392 | 33 | 34.0% | 
| Somers, CT | 2,343 | 40 | 20.0% | 
| Thompsonville, CT | 8,563 | 40 | 20.0% | 
| Broad Brook, CT | 4,118 | 41 | 18.0% | 
| City | Population | Air Quality Index | National Avg. | 
| Forest City, IA | 4,117 | 15 | 70.0% | 
| Scottdale, PA | 4,116 | 36 | 28.0% | 
| Roebling, NJ | 4,120 | 41 | 18.0% | 
| Rossland, BC | 4,115 | n/a | |
| Golden, BC | 4,115 | n/a | |
| Broad Brook, CT | 4,118 | 41 | 18.0% |