| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 22°F | 41°F | 31°F | 4.0" |
| February | 21°F | 42°F | 31°F | 3.8" |
| March | 28°F | 50°F | 39°F | 5.0" |
| April | 39°F | 63°F | 50°F | 4.7" |
| May | 48°F | 71°F | 59°F | 3.7" |
| June | 58°F | 80°F | 68°F | 4.8" |
| July | 65°F | 86°F | 75°F | 4.0" |
| August | 63°F | 84°F | 73°F | 3.6" |
| September | 56°F | 78°F | 66°F | 4.3" |
| October | 46°F | 67°F | 56°F | 5.9" |
| November | 36°F | 56°F | 45°F | 4.4" |
| December | 27°F | 46°F | 36°F | 5.2" |
| Index | Greene | Rhode Island | National |
| Air quality index | 44 | 45 | 42 |
| Pollution index | 2,960,790 | 3,440,259 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 289 |
| Days with moderate air quality | 74 |
| Days w/ poor A.Q. for sensitive groups | 2 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.003% |
| Benzene | 0.030% |
| Carbon Tetrachloride | 0.010% |
| Lead | 0.020% |
| Mercury | 0.005% |
| City | Population | Air Quality Index | National Avg. |
| Danielson, CT | 3,996 | 33 | 34.0% |
| Putnam, CT | 7,138 | 33 | 34.0% |
| East Brooklyn, CT | 2,103 | 33 | 34.0% |
| Brooklyn, CT | 1,128 | 33 | 34.0% |
| Wauregan, CT | 1,486 | 33 | 34.0% |
| Greene, RI | 1,016 | 44 | 12.0% |
| City | Population | Air Quality Index | National Avg. |
| Merrill, IA | 1,016 | 35 | 30.0% |
| Burrton, KS | 1,016 | 40 | 20.0% |
| Mount Vernon, MD | 1,016 | 41 | 18.0% |
| New Franklin, MO | 1,016 | 38 | 24.0% |
| Hewitt, WI | 1,016 | 34 | 32.0% |
| Greene, RI | 1,016 | 44 | 12.0% |
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