| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 25°F | 32°F | 28°F | 26.8" |
| February | 24°F | 31°F | 27°F | 15.1" |
| March | 24°F | 32°F | 28°F | 14.9" |
| April | 35°F | 45°F | 39°F | 28.1" |
| May | 42°F | 53°F | 47°F | 23.9" |
| June | 49°F | 62°F | 55°F | 23.5" |
| July | 53°F | 64°F | 57°F | 14.7" |
| August | 52°F | 63°F | 57°F | 16.5" |
| September | 48°F | 56°F | 51°F | 25.5" |
| October | 37°F | 44°F | 40°F | 25.5" |
| November | 28°F | 35°F | 32°F | 30.5" |
| December | 28°F | 35°F | 32°F | 31.1" |
| Index | Whittier | Alaska | National |
| Air quality index | 31 | 30 | 42 |
| Pollution index | 7,145,440 | 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 | 0.030% |
| Benzene | 0.130% |
| Carbon Tetrachloride | 0.020% |
| Lead | 0.140% |
| Mercury | 0.001% |
| City | Population | Air Quality Index | National Avg. |
| Whittier, AK | 262 | 31 | 38.0% |
| City | Population | Air Quality Index | National Avg. |
| Waverly, AL | 262 | 42 | 16.0% |
| Caryville, FL | 262 | 35 | 30.0% |
| Cumberland, IA | 262 | 40 | 20.0% |
| Hickory, KY | 262 | 44 | 12.0% |
| Manor Creek, KY | 262 | 49 | 2.0% |
| Whittier, AK | 262 | 31 | 38.0% |