| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 21°F | 43°F | 31°F | 2.6" |
| February | 26°F | 51°F | 38°F | 1.5" |
| March | 30°F | 61°F | 45°F | 1.3" |
| April | 38°F | 70°F | 54°F | 1.4" |
| May | 47°F | 81°F | 65°F | 0.8" |
| June | 55°F | 91°F | 74°F | 2.2" |
| July | 65°F | 100°F | 84°F | 1.3" |
| August | 63°F | 93°F | 78°F | 3.4" |
| September | 53°F | 84°F | 69°F | 2.7" |
| October | 40°F | 70°F | 55°F | 2.5" |
| November | 26°F | 57°F | 41°F | 0.9" |
| December | 16°F | 39°F | 27°F | 3.1" |
| Index | Moab | Utah | National |
| Air quality index | 44 | 45 | 42 |
| Pollution index | 5,993,500 | 3,340,369 | 2,726,193 |
| Measurement | Total |
| Days measured | 364 |
| Days with good air quality | 289 |
| Days with moderate air quality | 75 |
| Days w/ poor A.Q. for sensitive groups | 0 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.000% |
| Benzene | 0.130% |
| Carbon Tetrachloride | 0.000% |
| Lead | 0.004% |
| Mercury | 0.000% |
| City | Population | Air Quality Index | National Avg. |
| Spanish Valley, UT | 472 | 44 | 12.0% |
| Castle Valley, UT | 433 | 44 | 12.0% |
| Moab, UT | 5,303 | 44 | 12.0% |
| City | Population | Air Quality Index | National Avg. |
| Yosemite Lakes, CA | 5,303 | 50 | = 100 |
| Big Bear Lake, CA | 5,302 | 89 | 78.0% |
| New Castle, DE | 5,302 | 51 | 2.0% |
| Aberdeen, MS | 5,302 | 39 | 22.0% |
| Boulder Creek, CA | 5,305 | 35 | 30.0% |
| Moab, UT | 5,303 | 44 | 12.0% |
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