| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 18°F | 37°F | 27°F | 3.5" |
| February | 25°F | 45°F | 34°F | 2.2" |
| March | 29°F | 56°F | 42°F | 1.8" |
| April | 34°F | 64°F | 49°F | 2.6" |
| May | 43°F | 74°F | 58°F | 1.0" |
| June | 50°F | 83°F | 67°F | 4.4" |
| July | 61°F | 94°F | 78°F | 0.3" |
| August | 58°F | 88°F | 72°F | 1.9" |
| September | 48°F | 77°F | 62°F | 3.6" |
| October | 37°F | 64°F | 49°F | 2.3" |
| November | 27°F | 52°F | 38°F | 1.1" |
| December | 14°F | 34°F | 24°F | 2.0" |
| Index | Duchesne | Utah | National |
| Air quality index | 46 | 45 | 42 |
| Pollution index | 1,093,520 | 3,340,369 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 265 |
| Days with moderate air quality | 99 |
| Days w/ poor A.Q. for sensitive groups | 1 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.001% |
| Benzene | 0.020% |
| Carbon Tetrachloride | 0.000% |
| Lead | 0.002% |
| Mercury | 0.000% |
| City | Population | Air Quality Index | National Avg. |
| Altamont, UT | 385 | 49 | 2.0% |
| Bluebell, UT | 332 | 49 | 2.0% |
| Duchesne, UT | 2,019 | 46 | 8.0% |
| City | Population | Air Quality Index | National Avg. |
| Woodworth, LA | 2,019 | 30 | 40.0% |
| Indian River, MI | 2,019 | 36 | 28.0% |
| Windham, OH | 2,019 | 42 | 16.0% |
| Culver, OR | 2,019 | 23 | 54.0% |
| Glade Spring, VA | 2,019 | 26 | 48.0% |
| Duchesne, UT | 2,019 | 46 | 8.0% |
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