| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 5°F | 24°F | 14°F | 1.5" |
| February | 9°F | 30°F | 19°F | 0.9" |
| March | 11°F | 36°F | 24°F | 1.0" |
| April | 24°F | 48°F | 37°F | 1.1" |
| May | 35°F | 61°F | 50°F | 1.2" |
| June | 46°F | 68°F | 57°F | 1.7" |
| July | 50°F | 70°F | 60°F | 2.7" |
| August | 47°F | 66°F | 56°F | 4.9" |
| September | 39°F | 58°F | 48°F | 5.2" |
| October | 26°F | 45°F | 35°F | 3.1" |
| November | 10°F | 29°F | 20°F | 1.6" |
| December | 8°F | 25°F | 17°F | 1.5" |
| Index | Chase | Alaska | National |
| Air quality index | 31 | 30 | 42 |
| Pollution index | 2,223,820 | 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 | 0.000% |
| Benzene | 0.040% |
| Carbon Tetrachloride | 0.002% |
| Lead | 0.000% |
| Mercury | 0.000% |
| City | Population | Air Quality Index | National Avg. |
| Talkeetna, AK | 1,199 | 31 | 38.0% |
| Trapper Creek, AK | 304 | 31 | 38.0% |
| Chase, AK | 0 | 31 | 38.0% |
| City | Population | Air Quality Index | National Avg. |
| Chiniak, AK | 0 | 31 | 38.0% |
| Chisana, AK | 0 | 31 | 38.0% |
| Dot Lake, AK | 0 | 38 | 24.0% |
| Eureka Roadhouse, AK | 0 | 31 | 38.0% |
| Flat, AK | 0 | 31 | 38.0% |
| Chase, AK | 0 | 31 | 38.0% |
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