| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | -18°F | -1°F | -10°F | 0.1" |
| February | -11°F | 10°F | 0°F | 0.1" |
| March | -8°F | 19°F | 6°F | 0.1" |
| April | 15°F | 41°F | 29°F | 0.2" |
| May | 34°F | 62°F | 49°F | 0.6" |
| June | 46°F | 72°F | 60°F | 1.6" |
| July | 49°F | 73°F | 62°F | 1.6" |
| August | 44°F | 66°F | 55°F | 2.8" |
| September | 35°F | 54°F | 44°F | 1.7" |
| October | 19°F | 34°F | 27°F | 0.4" |
| November | -6°F | 12°F | 3°F | 0.2" |
| December | -12°F | 5°F | -3°F | 0.2" |
| Index | Manley Hot Springs | Alaska | National |
| Air quality index | 38 | 30 | 42 |
| Pollution index | 131,850 | 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 | 0.002% |
| Carbon Tetrachloride | 0.000% |
| Lead | 0.040% |
| Mercury | 0.000% |
| City | Population | Air Quality Index | National Avg. |
| Manley Hot Springs, AK | 42 | 38 | 24.0% |
| City | Population | Air Quality Index | National Avg. |
| Chignik, AK | 42 | 31 | 38.0% |
| Circle, AK | 42 | 38 | 24.0% |
| South Naknek, AK | 42 | 31 | 38.0% |
| Corinth, AR | 42 | 38 | 24.0% |
| Jerome, AR | 42 | 43 | 14.0% |
| Manley Hot Springs, AK | 42 | 38 | 24.0% |
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