| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 16°F | 44°F | 30°F | 2.7" |
| February | 23°F | 53°F | 37°F | 1.3" |
| March | 32°F | 64°F | 48°F | 2.4" |
| April | 40°F | 72°F | 56°F | 1.5" |
| May | 48°F | 81°F | 66°F | 3.0" |
| June | 58°F | 95°F | 79°F | 2.3" |
| July | 66°F | 99°F | 84°F | 1.4" |
| August | 62°F | 96°F | 80°F | 3.3" |
| September | 52°F | 87°F | 70°F | 3.2" |
| October | 39°F | 72°F | 55°F | 6.3" |
| November | 27°F | 58°F | 42°F | 3.8" |
| December | 17°F | 43°F | 30°F | 3.5" |
| Index | Hanksville | Utah | National |
| Air quality index | 46 | 45 | 42 |
| Pollution index | 488,032 | 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 | 0.003% |
| Carbon Tetrachloride | 0.000% |
| Lead | 0.001% |
| Mercury | 0.001% |
| City | Population | Air Quality Index | National Avg. |
| Hanksville, UT | 281 | 46 | 8.0% |
| City | Population | Air Quality Index | National Avg. |
| Copper Center, AK | 281 | 31 | 38.0% |
| Madrid, AL | 281 | 35 | 30.0% |
| Carl, GA | 281 | 37 | 26.0% |
| Jewett, IL | 281 | 40 | 20.0% |
| Lisbon, IL | 281 | 0 | 100.0% |
| Hanksville, UT | 281 | 46 | 8.0% |
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