| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 24°F | 37°F | 30°F | 12.4" |
| February | 23°F | 39°F | 30°F | 8.2" |
| March | 22°F | 40°F | 31°F | 7.0" |
| April | 30°F | 47°F | 38°F | 6.7" |
| May | 37°F | 55°F | 46°F | 6.9" |
| June | 44°F | 59°F | 52°F | 4.9" |
| July | 49°F | 62°F | 55°F | 7.3" |
| August | 48°F | 62°F | 55°F | 13.6" |
| September | 43°F | 57°F | 50°F | 19.0" |
| October | 35°F | 50°F | 42°F | 16.3" |
| November | 26°F | 40°F | 32°F | 10.9" |
| December | 24°F | 37°F | 30°F | 11.5" |
| Index | Yakutat | Alaska | National |
| Air quality index | 20 | 30 | 42 |
| Pollution index | 124,149 | 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 | 0.002% |
| Carbon Tetrachloride | 0.000% |
| Lead | 0.000% |
| Mercury | 0.000% |
| City | Population | Air Quality Index | National Avg. |
| Yakutat, AK | 621 | 20 | 60.0% |
| City | Population | Air Quality Index | National Avg. |
| South Vinemont, AL | 621 | 41 | 18.0% |
| Loleta, CA | 621 | 27 | 46.0% |
| Leslie, GA | 621 | 39 | 22.0% |
| Keystone, IA | 621 | 39 | 22.0% |
| Moravia, IA | 621 | 39 | 22.0% |
| Yakutat, AK | 621 | 20 | 60.0% |