| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 14°F | 33°F | 23°F | 4.0" |
| February | 14°F | 35°F | 24°F | 4.6" |
| March | 23°F | 44°F | 33°F | 6.9" |
| April | 34°F | 59°F | 46°F | 4.4" |
| May | 45°F | 70°F | 57°F | 5.3" |
| June | 54°F | 76°F | 65°F | 5.7" |
| July | 60°F | 82°F | 70°F | 10.6" |
| August | 57°F | 80°F | 67°F | 6.5" |
| September | 50°F | 73°F | 61°F | 8.8" |
| October | 40°F | 62°F | 49°F | 8.2" |
| November | 29°F | 49°F | 39°F | 4.3" |
| December | 21°F | 38°F | 29°F | 4.5" |
| Index | West Brattleboro | Vermont | National |
| Air quality index | 34 | 36 | 42 |
| Pollution index | 1,823,030 | 1,478,772 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 348 |
| Days with moderate air quality | 17 |
| Days w/ poor A.Q. for sensitive groups | 0 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.001% |
| Benzene | 0.030% |
| Carbon Tetrachloride | 0.002% |
| Lead | 0.010% |
| Mercury | 0.001% |
| City | Population | Air Quality Index | National Avg. |
| Hinsdale, NH | 1,470 | 34 | 32.0% |
| Newfane, VT | 137 | 34 | 32.0% |
| West Swanzey, NH | 1,180 | 34 | 32.0% |
| Putney, VT | 394 | 34 | 32.0% |
| Winchester, NH | 1,939 | 34 | 32.0% |
| West Brattleboro, VT | 3,042 | 34 | 32.0% |
| City | Population | Air Quality Index | National Avg. |
| Andrews, SC | 3,041 | 14 | 72.0% |
| Sisco Heights, WA | 3,041 | 24 | 52.0% |
| Bishopville, SC | 3,043 | 40 | 20.0% |
| East Gaffney, SC | 3,043 | 36 | 28.0% |
| McCormick, SC | 3,043 | 47 | 6.0% |
| West Brattleboro, VT | 3,042 | 34 | 32.0% |
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