| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 10°F | 25°F | 17°F | 2.3" |
| February | 10°F | 29°F | 19°F | 3.0" |
| March | 16°F | 32°F | 24°F | 2.2" |
| April | 32°F | 51°F | 42°F | 1.9" |
| May | 41°F | 59°F | 49°F | 2.0" |
| June | 47°F | 67°F | 57°F | 2.3" |
| July | 52°F | 68°F | 59°F | 3.9" |
| August | 50°F | 67°F | 57°F | 2.5" |
| September | 44°F | 57°F | 50°F | 5.1" |
| October | 29°F | 43°F | 36°F | 2.4" |
| November | 17°F | 29°F | 23°F | 1.6" |
| December | 15°F | 29°F | 22°F | 0.3" |
| Index | Wasilla | 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. |
| Gateway, AK | 5,965 | 31 | 38.0% |
| Houston, AK | 1,952 | 31 | 38.0% |
| Buffalo Soapstone, AK | 937 | 31 | 38.0% |
| Knik River, AK | 807 | 31 | 38.0% |
| Knik-Fairview, AK | 17,682 | 31 | 38.0% |
| Wasilla, AK | 10,469 | 31 | 38.0% |
| City | Population | Air Quality Index | National Avg. |
| North Bellport, NY | 10,468 | 43 | 14.0% |
| Cusseta-Chattahoochee County, GA | 10,470 | 42 | 16.0% |
| Shelton, WA | 10,467 | 21 | 58.0% |
| Covington, LA | 10,471 | 30 | 40.0% |
| Bromont, QC | 10,466 | n/a | |
| Wasilla, AK | 10,469 | 31 | 38.0% |
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