| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 14°F | 39°F | 25°F | 0.4" |
| February | 22°F | 47°F | 33°F | 0.5" |
| March | 29°F | 59°F | 43°F | 0.5" |
| April | 35°F | 66°F | 49°F | 0.7" |
| May | 43°F | 75°F | 58°F | 0.9" |
| June | 53°F | 89°F | 71°F | 0.3" |
| July | 59°F | 91°F | 74°F | 1.0" |
| August | 56°F | 88°F | 71°F | 1.1" |
| September | 48°F | 80°F | 63°F | 1.2" |
| October | 37°F | 67°F | 50°F | 1.0" |
| November | 26°F | 55°F | 39°F | 0.5" |
| December | 16°F | 39°F | 27°F | 0.5" |
| Index | Nucla | Colorado | National |
| Air quality index | 44 | 38 | 42 |
| Pollution index | 6,125,430 | 2,068,342 | 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 | 0.020% |
| Benzene | 0.070% |
| Carbon Tetrachloride | 0.020% |
| Lead | 0.130% |
| Mercury | 0.030% |
| City | Population | Air Quality Index | National Avg. |
| Norwood, CO | 584 | 44 | 12.0% |
| Naturita, CO | 451 | 44 | 12.0% |
| Redvale, CO | 318 | 44 | 12.0% |
| Nucla, CO | 607 | 44 | 12.0% |
| City | Population | Air Quality Index | National Avg. |
| Fort Garland, CO | 607 | 16 | 68.0% |
| Cove City, NC | 607 | 42 | 16.0% |
| Red Oak, OK | 607 | 43 | 14.0% |
| Bucksport, SC | 607 | 14 | 72.0% |
| Stonewall, TX | 607 | 44 | 12.0% |
| Nucla, CO | 607 | 44 | 12.0% |
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