| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 15°F | 31°F | 23°F | 4.6" |
| February | 12°F | 31°F | 22°F | 3.5" |
| March | 19°F | 39°F | 29°F | 5.4" |
| April | 32°F | 56°F | 44°F | 5.6" |
| May | 42°F | 66°F | 54°F | 3.9" |
| June | 54°F | 78°F | 66°F | 5.7" |
| July | 57°F | 79°F | 68°F | 4.4" |
| August | 58°F | 81°F | 69°F | 3.8" |
| September | 50°F | 75°F | 62°F | 2.0" |
| October | 43°F | 62°F | 52°F | 14.1" |
| November | 28°F | 48°F | 37°F | 6.2" |
| December | 19°F | 33°F | 26°F | 4.8" |
| Index | Ghent | New York | National |
| Air quality index | 37 | 43 | 42 |
| Pollution index | 4,483,560 | 6,179,275 | 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 | 0.005% |
| Lead | 0.020% |
| Mercury | 0.010% |
| City | Population | Air Quality Index | National Avg. |
| Germantown, NY | 1,084 | 36 | 28.0% |
| Copake Lake, NY | 761 | 37 | 26.0% |
| Athens, NY | 1,743 | 37 | 26.0% |
| Kinderhook, NY | 1,379 | 37 | 26.0% |
| Philmont, NY | 997 | 37 | 26.0% |
| Ghent, NY | 499 | 37 | 26.0% |
| City | Population | Air Quality Index | National Avg. |
| Shishmaref, AK | 499 | 38 | 24.0% |
| Midway, AL | 499 | 52 | 4.0% |
| Wilmot, AR | 499 | 34 | 32.0% |
| Ephesus, GA | 499 | 38 | 24.0% |
| Sorento, IL | 499 | 54 | 8.0% |
| Ghent, NY | 499 | 37 | 26.0% |
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