| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 17°F | 32°F | 24°F | 4.9" |
| February | 17°F | 33°F | 25°F | 4.4" |
| March | 26°F | 45°F | 34°F | 5.3" |
| April | 36°F | 58°F | 46°F | 6.9" |
| May | 47°F | 69°F | 57°F | 5.6" |
| June | 55°F | 76°F | 65°F | 9.2" |
| July | 60°F | 81°F | 70°F | 8.2" |
| August | 57°F | 78°F | 67°F | 8.7" |
| September | 52°F | 72°F | 61°F | 7.4" |
| October | 42°F | 60°F | 50°F | 6.6" |
| November | 31°F | 48°F | 39°F | 4.7" |
| December | 24°F | 37°F | 30°F | 6.3" |
| Index | Andes | New York | National |
| Air quality index | 36 | 43 | 42 |
| Pollution index | 1,643,670 | 6,179,275 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 319 |
| Days with moderate air quality | 46 |
| Days w/ poor A.Q. for sensitive groups | |
| Days with unhealthy air quality |
| Pollutant | Total |
| Arsenic | 0.002% |
| Benzene | 0.020% |
| Carbon Tetrachloride | 0.002% |
| Lead | 0.010% |
| Mercury | 0.002% |
| City | Population | Air Quality Index | National Avg. |
| Delhi, NY | 3,146 | 27 | 46.0% |
| Bloomville, NY | 218 | 27 | 46.0% |
| Fleischmanns, NY | 314 | 36 | 28.0% |
| Margaretville, NY | 707 | 36 | 28.0% |
| Hobart, NY | 506 | 37 | 26.0% |
| Andes, NY | 199 | 36 | 28.0% |
| City | Population | Air Quality Index | National Avg. |
| Macedonia, AL | 199 | 35 | 30.0% |
| Pleasant Plains, AR | 199 | 45 | 10.0% |
| Southern Ute, CO | 199 | 44 | 12.0% |
| Soldier, IA | 199 | 35 | 30.0% |
| Cave-In-Rock, IL | 199 | 44 | 12.0% |
| Andes, NY | 199 | 36 | 28.0% |
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