| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | -13°F | 0°F | -6°F | 0.5" |
| February | -9°F | 7°F | -1°F | 0.2" |
| March | -12°F | 5°F | -4°F | 0.0" |
| April | 7°F | 24°F | 15°F | 0.6" |
| May | 27°F | 43°F | 34°F | 1.9" |
| June | 45°F | 62°F | 52°F | 1.4" |
| July | 52°F | 65°F | 58°F | 3.3" |
| August | 48°F | 61°F | 54°F | 3.2" |
| September | 38°F | 50°F | 43°F | 3.1" |
| October | 23°F | 32°F | 27°F | 1.9" |
| November | 1°F | 13°F | 7°F | 0.7" |
| December | -5°F | 8°F | 2°F | 0.2" |
| Index | Selawik | Alaska | National |
| Air quality index | 38 | 30 | 42 |
| Pollution index | 586,229 | 11,243,194 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 230 |
| Days with moderate air quality | 96 |
| Days w/ poor A.Q. for sensitive groups | 18 |
| Days with unhealthy air quality | 16 |
| Pollutant | Total |
| Arsenic | 0.000% |
| Benzene | 0.010% |
| Carbon Tetrachloride | 0.000% |
| Lead | 0.300% |
| Mercury | 0.000% |
| City | Population | Air Quality Index | National Avg. |
| Selawik, AK | 728 | 38 | 24.0% |
| City | Population | Air Quality Index | National Avg. |
| Ash Fork, AZ | 728 | 43 | 14.0% |
| Yonah, GA | 728 | 37 | 26.0% |
| Deerwood, MN | 728 | 29 | 42.0% |
| Cashiers, NC | 728 | 41 | 18.0% |
| Copenhagen, NY | 728 | 35 | 30.0% |
| Selawik, AK | 728 | 38 | 24.0% |
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