| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 30°F | 37°F | 33°F | 1.6" |
| February | 31°F | 38°F | 34°F | 2.4" |
| March | 31°F | 39°F | 35°F | 5.0" |
| April | 34°F | 41°F | 37°F | 1.5" |
| May | 37°F | 45°F | 40°F | 1.2" |
| June | 42°F | 49°F | 45°F | 2.9" |
| July | 46°F | 53°F | 48°F | 1.8" |
| August | 48°F | 56°F | 51°F | 5.2" |
| September | 46°F | 53°F | 49°F | 3.9" |
| October | 40°F | 48°F | 44°F | 8.4" |
| November | 36°F | 43°F | 39°F | 4.5" |
| December | 32°F | 39°F | 36°F | 3.7" |
| Index | Atka | Alaska | National |
| Air quality index | 31 | 30 | 42 |
| Pollution index | 204,690 | 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 | 0.030% |
| Benzene | 0.010% |
| Carbon Tetrachloride | 0.000% |
| Lead | 0.010% |
| Mercury | 0.000% |
| City | Population | Air Quality Index | National Avg. |
| Atka, AK | 44 | 31 | 38.0% |
| City | Population | Air Quality Index | National Avg. |
| Circle, AK | 44 | 38 | 24.0% |
| Manley Hot Springs, AK | 44 | 38 | 24.0% |
| South Naknek, AK | 44 | 31 | 38.0% |
| Corinth, AR | 44 | 38 | 24.0% |
| Jerome, AR | 44 | 43 | 14.0% |
| Atka, AK | 44 | 31 | 38.0% |