| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 27°F | 35°F | 31°F | 13.5" |
| February | 27°F | 36°F | 31°F | 19.0" |
| March | 24°F | 33°F | 28°F | 7.9" |
| April | 32°F | 41°F | 36°F | 10.8" |
| May | 38°F | 49°F | 43°F | 8.1" |
| June | 44°F | 55°F | 49°F | 11.6" |
| July | 49°F | 59°F | 53°F | 9.5" |
| August | 50°F | 60°F | 54°F | 6.8" |
| September | 46°F | 55°F | 50°F | 8.3" |
| October | 39°F | 47°F | 43°F | 12.4" |
| November | 32°F | 40°F | 36°F | 9.7" |
| December | 29°F | 37°F | 33°F | 14.1" |
| Index | Perryville | Alaska | National |
| Air quality index | 31 | 30 | 42 |
| Pollution index | 129,942 | 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 | 0.002% |
| Carbon Tetrachloride | 0.000% |
| Lead | 0.000% |
| Mercury | 0.000% |
| City | Population | Air Quality Index | National Avg. |
| Ivanof Bay, AK | 0 | 31 | 38.0% |
| Perryville, AK | 54 | 31 | 38.0% |
| City | Population | Air Quality Index | National Avg. |
| Rampart, AK | 54 | 38 | 24.0% |
| Putnam, AL | 54 | 36 | 28.0% |
| Copper Hill, AZ | 54 | 60 | 20.0% |
| Fellows, CA | 54 | 67 | 34.0% |
| Kirkman, IA | 54 | 40 | 20.0% |
| Perryville, AK | 54 | 31 | 38.0% |
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