| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 5°F | 16°F | 10°F | 0.4" |
| February | 8°F | 22°F | 15°F | 0.2" |
| March | 6°F | 19°F | 12°F | 0.1" |
| April | 18°F | 30°F | 24°F | 0.2" |
| May | 31°F | 44°F | 37°F | 1.3" |
| June | 40°F | 53°F | 46°F | 1.2" |
| July | 46°F | 57°F | 51°F | 1.8" |
| August | 47°F | 57°F | 52°F | 2.3" |
| September | 41°F | 51°F | 46°F | 2.2" |
| October | 30°F | 40°F | 35°F | 1.9" |
| November | 18°F | 29°F | 23°F | 1.0" |
| December | 11°F | 23°F | 17°F | 0.7" |
| Index | Nightmute | Alaska | National |
| Air quality index | 31 | 30 | 42 |
| Pollution index | 349,533 | 11,243,194 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 262 |
| Days with moderate air quality | 92 |
| Days w/ poor A.Q. for sensitive groups | 7 |
| Days with unhealthy air quality | 4 |
| Pollutant | Total |
| Arsenic | 0.000% |
| Benzene | 0.010% |
| Carbon Tetrachloride | 0.000% |
| Lead | 0.000% |
| Mercury | 0.000% |
| City | Population | Air Quality Index | National Avg. |
| Toksook Bay, AK | 863 | 31 | 38.0% |
| Tununak, AK | 338 | 31 | 38.0% |
| Nightmute, AK | 150 | 31 | 38.0% |
| City | Population | Air Quality Index | National Avg. |
| Deering, AK | 150 | 38 | 24.0% |
| Port Graham, AK | 150 | 31 | 38.0% |
| Garden City, IA | 150 | 37 | 26.0% |
| Palmer, IA | 150 | 37 | 26.0% |
| Welton, IA | 150 | 42 | 16.0% |
| Nightmute, AK | 150 | 31 | 38.0% |
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