| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 21°F | 36°F | 28°F | 3.9" |
| February | 21°F | 37°F | 29°F | 4.4" |
| March | 29°F | 46°F | 37°F | 7.7" |
| April | 39°F | 59°F | 48°F | 9.6" |
| May | 49°F | 68°F | 58°F | 9.0" |
| June | 57°F | 76°F | 66°F | 12.4" |
| July | 63°F | 81°F | 72°F | 9.8" |
| August | 61°F | 79°F | 70°F | 7.9" |
| September | 55°F | 73°F | 63°F | 6.6" |
| October | 44°F | 62°F | 53°F | 10.7" |
| November | 35°F | 51°F | 43°F | 4.9" |
| December | 27°F | 41°F | 34°F | 3.7" |
| Index | Torrington | Connecticut | National |
| Air quality index | 37 | 43 | 50 |
| Pollution index | 161,427 | 7,127,531 | 5,066,862 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 342 |
| Days with moderate air quality | 23 |
| Days w/ poor A.Q. for sensitive groups | 0 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.000% |
| Benzene | 0.002% |
| Carbon Tetrachloride | 0.000% |
| Lead | 0.000% |
| Mercury | 0.000% |
| City, State | Population | Air Quality Index | National Avg. |
| Collinsville, CT | 3,693 | 37 | 26% |
| Canaan, CT | 1,192 | 37 | 26% |
| New Milford, CT | 7,080 | 37 | 26% |
| Watertown, CT | 3,351 | 37 | 26% |
| Northwest Harwinton, CT | 3,103 | 37 | 26% |
| Torrington, CT | 35,227 | 37 | 26% |
| City, State | Population | Air Quality Index | National Avg. |
| Oak Creek, WI | 35,218 | 39 | 22% |
| Roseville, MN | 35,254 | 46 | 8% |
| Merrillville, IN | 35,268 | 37 | 26% |
| Land O' Lakes, FL | 35,122 | 43 | 14% |
| Olney, MD | 35,336 | 47 | 6% |
| Torrington, CT | 35,227 | 37 | 26% |
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