| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 21°F | 32°F | 26°F | 6.3" |
| February | 23°F | 35°F | 28°F | 5.1" |
| March | 23°F | 37°F | 29°F | 2.8" |
| April | 31°F | 46°F | 38°F | 3.6" |
| May | 39°F | 55°F | 46°F | 2.5" |
| June | 45°F | 60°F | 52°F | 2.1" |
| July | 49°F | 63°F | 56°F | 3.7" |
| August | 49°F | 62°F | 55°F | 5.5" |
| September | 44°F | 57°F | 49°F | 10.5" |
| October | 35°F | 48°F | 40°F | 8.6" |
| November | 25°F | 36°F | 30°F | 5.7" |
| December | 22°F | 33°F | 28°F | 5.9" |
| Index | Chenega | 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. |
| Chenega, AK | 48 | 31 | 38.0% |
| City | Population | Air Quality Index | National Avg. |
| Morrison Bluff, AR | 48 | 36 | 28.0% |
| Johannesburg, CA | 48 | 67 | 34.0% |
| Robinson Mill, CA | 48 | 44 | 12.0% |
| Cobbtown, FL | 48 | 41 | 18.0% |
| Aredale, IA | 48 | 15 | 70.0% |
| Chenega, AK | 48 | 31 | 38.0% |
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