| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 14°F | 31°F | 22°F | 2.3" |
| February | 14°F | 32°F | 23°F | 2.6" |
| March | 23°F | 43°F | 32°F | 3.0" |
| April | 35°F | 59°F | 46°F | 4.0" |
| May | 46°F | 71°F | 58°F | 4.6" |
| June | 55°F | 78°F | 66°F | 4.8" |
| July | 59°F | 82°F | 70°F | 4.2" |
| August | 58°F | 80°F | 68°F | 3.6" |
| September | 51°F | 75°F | 62°F | 4.0" |
| October | 41°F | 62°F | 51°F | 5.5" |
| November | 30°F | 49°F | 39°F | 3.3" |
| December | 21°F | 37°F | 29°F | 3.8" |
| Index | Prospect | New York | National |
| Air quality index | 27 | 43 | 42 |
| Pollution index | 230,538 | 6,179,275 | 2,726,193 |
| Measurement | Total |
| Days measured | 359 |
| Days with good air quality | 349 |
| Days with moderate air quality | 10 |
| Days w/ poor A.Q. for sensitive groups | 0 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.000% |
| Benzene | 0.004% |
| Carbon Tetrachloride | 0.001% |
| Lead | 0.000% |
| Mercury | 0.000% |
| City | Population | Air Quality Index | National Avg. |
| Barneveld, NY | 181 | 27 | 46.0% |
| Poland, NY | 451 | 27 | 46.0% |
| Oriskany, NY | 1,196 | 27 | 46.0% |
| Cold Brook, NY | 254 | 27 | 46.0% |
| Remsen, NY | 435 | 27 | 46.0% |
| Prospect, NY | 368 | 27 | 46.0% |
| City | Population | Air Quality Index | National Avg. |
| Nord, CA | 368 | 46 | 8.0% |
| Yale, IA | 368 | 39 | 22.0% |
| Melvern, KS | 368 | 22 | 56.0% |
| Petersburg, KY | 368 | 54 | 8.0% |
| St. Maurice, LA | 368 | 30 | 40.0% |
| Prospect, NY | 368 | 27 | 46.0% |
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