| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 3°F | 14°F | 8°F | 0.0" |
| February | 5°F | 18°F | 12°F | 0.2" |
| March | 3°F | 18°F | 10°F | 0.0" |
| April | 17°F | 32°F | 24°F | 0.1" |
| May | 31°F | 45°F | 37°F | 0.7" |
| June | 41°F | 55°F | 47°F | 1.4" |
| July | 47°F | 58°F | 51°F | 2.4" |
| August | 48°F | 58°F | 52°F | 2.8" |
| September | 40°F | 51°F | 45°F | 1.8" |
| October | 30°F | 39°F | 34°F | 1.6" |
| November | 16°F | 26°F | 21°F | 0.4" |
| December | 10°F | 21°F | 16°F | 1.6" |
| Index | Chevak | Alaska | National |
| Air quality index | 31 | 30 | 50 |
| Pollution index | 349,533 | 11,990,286 | 5,066,862 |
| 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, State | Population | Air Quality Index | National Avg. |
| Chevak, AK | 1,194 | 31 | 38% |
| City, State | Population | Air Quality Index | National Avg. |
| Thorndale, TX | 1,194 | 44 | 12% |
| Oley, PA | 1,194 | 42 | 16% |
| Coburg, OR | 1,194 | 38 | 24% |
| Bethesda, OH | 1,194 | 39 | 22% |
| Pleasanton, KS | 1,194 | 47 | 6% |
| Chevak, AK | 1,194 | 31 | 38% |
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