| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 16°F | 33°F | 24°F | 4.6" |
| February | 14°F | 34°F | 23°F | 3.7" |
| March | 20°F | 42°F | 31°F | 6.0" |
| April | 34°F | 58°F | 45°F | 6.9" |
| May | 42°F | 68°F | 55°F | 3.7" |
| June | 55°F | 80°F | 67°F | 6.4" |
| July | 58°F | 81°F | 69°F | 7.3" |
| August | 58°F | 81°F | 69°F | 3.5" |
| September | 50°F | 76°F | 62°F | 6.4" |
| October | 43°F | 64°F | 52°F | 12.6" |
| November | 29°F | 50°F | 39°F | 6.2" |
| December | 20°F | 36°F | 28°F | 4.0" |
| Index | Adams | Massachusetts | National |
| Air quality index | 37 | 40 | 42 |
| Pollution index | 6,535,100 | 8,399,610 | 2,726,193 |
| Measurement | Total |
| Days measured | 364 |
| Days with good air quality | 320 |
| Days with moderate air quality | 44 |
| Days w/ poor A.Q. for sensitive groups | 0 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.010% |
| Benzene | 0.050% |
| Carbon Tetrachloride | 0.010% |
| Lead | 0.090% |
| Mercury | 0.050% |
| City | Population | Air Quality Index | National Avg. |
| Readsboro, VT | 309 | 35 | 30.0% |
| Williamstown, MA | 4,565 | 35 | 30.0% |
| North Adams, MA | 12,897 | 35 | 30.0% |
| Pittsfield, MA | 42,514 | 37 | 26.0% |
| Cheshire, MA | 683 | 37 | 26.0% |
| Adams, MA | 5,689 | 37 | 26.0% |
| City | Population | Air Quality Index | National Avg. |
| Mayflower Village, CA | 5,687 | 72 | 44.0% |
| Keyes, CA | 5,691 | 49 | 2.0% |
| South Tucson, AZ | 5,692 | 47 | 6.0% |
| Fellsmere, FL | 5,692 | 36 | 28.0% |
| Fairview, NY | 5,693 | 36 | 28.0% |
| Adams, MA | 5,689 | 37 | 26.0% |
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