| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 26°F | 32°F | 29°F | n/a |
| February | 25°F | 36°F | 30°F | n/a |
| March | 29°F | 42°F | 36°F | n/a |
| April | 35°F | 52°F | 43°F | n/a |
| May | 43°F | 62°F | 53°F | n/a |
| June | 49°F | 66°F | 57°F | n/a |
| July | 52°F | 67°F | 59°F | n/a |
| August | 52°F | 66°F | 58°F | n/a |
| September | 47°F | 59°F | 53°F | n/a |
| October | 40°F | 49°F | 44°F | n/a |
| November | 31°F | 37°F | 34°F | n/a |
| December | 24°F | 31°F | 27°F | n/a |
| Index | Hyder | Alaska | National |
| Air quality index | 20 | 30 | 42 |
| Pollution index | 441,733 | 11,243,194 | 2,726,193 |
| 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 | 0.001% |
| Lead | 0.000% |
| Mercury | 0.000% |
| City | Population | Air Quality Index | National Avg. |
| Hyder, AK | 12 | 20 | 60.0% |
| City | Population | Air Quality Index | National Avg. |
| Chicken, AK | 12 | 38 | 24.0% |
| Bucks, AL | 12 | 42 | 16.0% |
| Victoria, AR | 12 | 26 | 48.0% |
| Durango, IA | 12 | 29 | 42.0% |
| Clayton, ID | 12 | 36 | 28.0% |
| Hyder, AK | 12 | 20 | 60.0% |
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