| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 31°F | 39°F | 36°F | 3.0" |
| February | 29°F | 40°F | 36°F | 1.8" |
| March | 30°F | 41°F | 35°F | 2.1" |
| April | 36°F | 50°F | 42°F | 1.9" |
| May | 42°F | 57°F | 49°F | 1.6" |
| June | 49°F | 63°F | 56°F | 2.0" |
| July | 53°F | 66°F | 59°F | 2.6" |
| August | 53°F | 66°F | 59°F | 3.6" |
| September | 49°F | 60°F | 55°F | 4.7" |
| October | 41°F | 51°F | 46°F | 5.0" |
| November | 33°F | 42°F | 38°F | 3.6" |
| December | 29°F | 36°F | 34°F | 3.0" |
| Index | Angoon | Alaska | National |
| Air quality index | 20 | 30 | 42 |
| Pollution index | 926,820 | 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 | 0.070% |
| Benzene | 0.020% |
| Carbon Tetrachloride | 0.002% |
| Lead | 0.030% |
| Mercury | 0.030% |
| City | Population | Air Quality Index | National Avg. |
| Angoon, AK | 497 | 20 | 60.0% |
| City | Population | Air Quality Index | National Avg. |
| Cohasset, CA | 497 | 46 | 8.0% |
| Bird City, KS | 497 | 19 | 62.0% |
| Secretary, MD | 497 | 41 | 18.0% |
| Ghent, MN | 497 | 32 | 36.0% |
| New Houlka, MS | 497 | 39 | 22.0% |
| Angoon, AK | 497 | 20 | 60.0% |
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