| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 10°F | 25°F | 17°F | 0.8" |
| February | 14°F | 30°F | 22°F | 0.7" |
| March | 11°F | 30°F | 20°F | 0.8" |
| April | 25°F | 42°F | 34°F | 0.7" |
| May | 35°F | 55°F | 45°F | 1.2" |
| June | 43°F | 62°F | 52°F | 1.7" |
| July | 48°F | 64°F | 55°F | 3.5" |
| August | 48°F | 63°F | 55°F | 4.6" |
| September | 42°F | 56°F | 48°F | 5.6" |
| October | 31°F | 45°F | 38°F | 2.8" |
| November | 16°F | 31°F | 24°F | 1.8" |
| December | 15°F | 29°F | 22°F | 1.4" |
| Index | Nondalton | Alaska | National |
| Air quality index | 31 | 30 | 42 |
| Pollution index | 304,438 | 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 | 0.005% |
| Carbon Tetrachloride | 0.000% |
| Lead | 0.000% |
| Mercury | 0.000% |
| City | Population | Air Quality Index | National Avg. |
| Nondalton, AK | 88 | 31 | 38.0% |
| City | Population | Air Quality Index | National Avg. |
| Beaver, AK | 88 | 38 | 24.0% |
| Casmalia, CA | 88 | 46 | 8.0% |
| Furnace Creek, CA | 88 | 15 | 70.0% |
| Long Barn, CA | 88 | 39 | 22.0% |
| Vernonburg, GA | 88 | 39 | 22.0% |
| Nondalton, AK | 88 | 31 | 38.0% |
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