| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 20°F | 40°F | 29°F | 5.9" |
| February | 26°F | 47°F | 35°F | 4.1" |
| March | 33°F | 57°F | 43°F | 3.4" |
| April | 39°F | 66°F | 52°F | 2.8" |
| May | 48°F | 75°F | 61°F | 2.0" |
| June | 59°F | 90°F | 75°F | 2.5" |
| July | 64°F | 93°F | 78°F | 1.8" |
| August | 61°F | 89°F | 75°F | 2.6" |
| September | 52°F | 78°F | 64°F | 2.3" |
| October | 41°F | 65°F | 51°F | 3.3" |
| November | 36°F | 58°F | 45°F | 2.0" |
| December | 24°F | 41°F | 31°F | 5.6" |
| Index | Bluff | Utah | National |
| Air quality index | 49 | 45 | 42 |
| Pollution index | 1,584,960 | 3,340,369 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 208 |
| Days with moderate air quality | 157 |
| Days w/ poor A.Q. for sensitive groups | 0 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.001% |
| Benzene | 0.020% |
| Carbon Tetrachloride | 0.000% |
| Lead | 0.010% |
| Mercury | 0.000% |
| City | Population | Air Quality Index | National Avg. |
| Montezuma Creek, UT | 324 | 49 | 2.0% |
| White Mesa, UT | 138 | 49 | 2.0% |
| Tselakai Dezza, UT | 51 | 49 | 2.0% |
| Bluff, UT | 150 | 49 | 2.0% |
| City | Population | Air Quality Index | National Avg. |
| Deering, AK | 150 | 38 | 24.0% |
| Nightmute, AK | 150 | 31 | 38.0% |
| Port Graham, AK | 150 | 31 | 38.0% |
| Garden City, IA | 150 | 37 | 26.0% |
| Palmer, IA | 150 | 37 | 26.0% |
| Bluff, UT | 150 | 49 | 2.0% |
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