| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 11°F | 31°F | 22°F | 3.2" |
| February | 12°F | 33°F | 23°F | 2.5" |
| March | 21°F | 43°F | 32°F | 3.7" |
| April | 34°F | 60°F | 47°F | 3.7" |
| May | 43°F | 69°F | 56°F | 3.0" |
| June | 55°F | 78°F | 66°F | 5.1" |
| July | 58°F | 81°F | 70°F | 5.6" |
| August | 56°F | 79°F | 68°F | 4.5" |
| September | 48°F | 72°F | 60°F | 3.2" |
| October | 38°F | 59°F | 48°F | 6.2" |
| November | 29°F | 49°F | 39°F | 3.7" |
| December | 18°F | 35°F | 27°F | 4.6" |
| Index | Speculator | New York | National |
| Air quality index | 27 | 43 | 42 |
| Pollution index | 2,246,780 | 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 | 0.060% |
| Benzene | 0.030% |
| Carbon Tetrachloride | 0.010% |
| Lead | 0.050% |
| Mercury | 0.050% |
| City | Population | Air Quality Index | National Avg. |
| Wells, NY | 521 | 27 | 46.0% |
| Speculator, NY | 360 | 27 | 46.0% |
| City | Population | Air Quality Index | National Avg. |
| Kipnuk, AK | 360 | 31 | 38.0% |
| Muir Beach, CA | 360 | 40 | 20.0% |
| Fisher Island, FL | 360 | 41 | 18.0% |
| Worthington, IA | 360 | 29 | 42.0% |
| Malta, ID | 360 | 20 | 60.0% |
| Speculator, NY | 360 | 27 | 46.0% |
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