| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 17°F | 43°F | 29°F | 3.7" |
| February | 22°F | 48°F | 34°F | 2.9" |
| March | 24°F | 58°F | 40°F | 2.0" |
| April | 29°F | 66°F | 47°F | 2.0" |
| May | 38°F | 76°F | 57°F | 3.3" |
| June | 43°F | 87°F | 66°F | 0.9" |
| July | 53°F | 94°F | 74°F | 3.3" |
| August | 53°F | 88°F | 70°F | 3.1" |
| September | 45°F | 81°F | 62°F | 4.7" |
| October | 33°F | 68°F | 49°F | 1.4" |
| November | 22°F | 57°F | 38°F | 1.6" |
| December | 14°F | 42°F | 27°F | 3.3" |
| Index | Aneth | Utah | National |
| Air quality index | 49 | 45 | 42 |
| Pollution index | 639,508 | 3,340,369 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 208 |
| Days with moderate air quality | 157 |
| Days w/ poor A.Q. for sensitive groups | 0 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.003% |
| Benzene | 0.010% |
| Carbon Tetrachloride | 0.001% |
| Lead | 0.003% |
| Mercury | 0.010% |
| City | Population | Air Quality Index | National Avg. |
| Montezuma Creek, UT | 332 | 49 | 2.0% |
| Aneth, UT | 472 | 49 | 2.0% |
| City | Population | Air Quality Index | National Avg. |
| Lexington, GA | 472 | 44 | 12.0% |
| Holyrood, KS | 472 | 40 | 20.0% |
| La Cueva, NM | 472 | 44 | 12.0% |
| Madison, NY | 472 | 27 | 46.0% |
| Deer Lake CDP, PA | 472 | 42 | 16.0% |
| Aneth, UT | 472 | 49 | 2.0% |