| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 35°F | 43°F | 39°F | 9.4" |
| February | 34°F | 43°F | 38°F | 9.7" |
| March | 34°F | 43°F | 38°F | 5.9" |
| April | 38°F | 49°F | 43°F | 9.2" |
| May | 43°F | 55°F | 48°F | 6.5" |
| June | 48°F | 59°F | 53°F | 3.3" |
| July | 52°F | 63°F | 57°F | 4.5" |
| August | 53°F | 64°F | 57°F | 5.6" |
| September | 50°F | 60°F | 54°F | 7.0" |
| October | 44°F | 53°F | 48°F | 5.9" |
| November | 37°F | 45°F | 41°F | 5.5" |
| December | 34°F | 41°F | 37°F | 10.1" |
| Index | Hydaburg | Alaska | National |
| Air quality index | 20 | 30 | 50 |
| Pollution index | 455,086 | 11,990,286 | 5,066,862 |
| Measurement | Total |
| Days measured | 362 |
| Days with good air quality | 308 |
| Days with moderate air quality | 51 |
| Days w/ poor A.Q. for sensitive groups | 3 |
| Days with unhealthy air quality | 0 |
| 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. |
| Hydaburg, AK | 291 | 20 | 60% |
| City, State | Population | Air Quality Index | National Avg. |
| Ewing, VA | 291 | 39 | 22% |
| Alpena, SD | 291 | 25 | 50% |
| Coleman, OK | 291 | 325 | 550% |
| Liscomb, IA | 291 | 37 | 26% |
| Belknap, MT | 291 | 37 | 26% |
| Hydaburg, AK | 291 | 20 | 60% |
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