| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 3°F | 29°F | 15°F | 1.8" |
| February | 12°F | 39°F | 25°F | 1.3" |
| March | 19°F | 51°F | 34°F | 1.1" |
| April | 25°F | 62°F | 43°F | 1.9" |
| May | 33°F | 70°F | 52°F | 1.9" |
| June | 39°F | 80°F | 60°F | 3.0" |
| July | 46°F | 92°F | 70°F | 0.8" |
| August | 46°F | 87°F | 66°F | 1.4" |
| September | 37°F | 78°F | 57°F | 4.1" |
| October | 29°F | 64°F | 44°F | 3.2" |
| November | 17°F | 51°F | 32°F | 1.9" |
| December | 5°F | 31°F | 18°F | 2.6" |
| Index | Maybell | Colorado | National |
| Air quality index | 49 | 38 | 42 |
| Pollution index | 2,376,990 | 2,068,342 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 223 |
| Days with moderate air quality | 125 |
| Days w/ poor A.Q. for sensitive groups | 12 |
| Days with unhealthy air quality | 4 |
| Pollutant | Total |
| Arsenic | 0.250% |
| Benzene | 0.050% |
| Carbon Tetrachloride | 0.000% |
| Lead | 0.010% |
| Mercury | 0.080% |
| City | Population | Air Quality Index | National Avg. |
| Maybell, CO | 36 | 49 | 2.0% |
| City | Population | Air Quality Index | National Avg. |
| Excursion Inlet, AK | 36 | 20 | 60.0% |
| Proberta, CA | 36 | 41 | 18.0% |
| Coburg, IA | 36 | 40 | 20.0% |
| St. Vincent, MN | 36 | 33 | 34.0% |
| Wilder, MN | 36 | 32 | 36.0% |
| Maybell, CO | 36 | 49 | 2.0% |
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