| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 30°F | 63°F | 45°F | 0.6" |
| February | 34°F | 70°F | 50°F | 0.4" |
| March | 43°F | 79°F | 60°F | 1.0" |
| April | 51°F | 87°F | 68°F | 0.4" |
| May | 59°F | 93°F | 75°F | 1.3" |
| June | 70°F | 101°F | 85°F | 1.2" |
| July | 72°F | 99°F | 84°F | 1.5" |
| August | 71°F | 98°F | 84°F | 1.9" |
| September | 64°F | 91°F | 77°F | 2.1" |
| October | 52°F | 84°F | 67°F | 1.2" |
| November | 39°F | 73°F | 55°F | 0.2" |
| December | 31°F | 63°F | 45°F | 0.5" |
| Index | Monahans | Texas | National |
| Air quality index | 28 | 52 | 42 |
| Pollution index | 510,722 | 2,009,300 | 2,726,193 |
| Measurement | Total |
| Days measured | 354 |
| Days with good air quality | 319 |
| Days with moderate air quality | 35 |
| Days w/ poor A.Q. for sensitive groups | 0 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.000% |
| Benzene | 0.020% |
| Carbon Tetrachloride | 0.000% |
| Lead | 0.000% |
| Mercury | 0.000% |
| City | Population | Air Quality Index | National Avg. |
| Thorntonville, TX | 556 | 28 | 44.0% |
| Wickett, TX | 791 | 28 | 44.0% |
| Pyote, TX | 160 | 28 | 44.0% |
| Monahans, TX | 7,667 | 28 | 44.0% |
| City | Population | Air Quality Index | National Avg. |
| Butler, NJ | 7,669 | 51 | 2.0% |
| Sebastopol, CA | 7,664 | 34 | 32.0% |
| Waller, WA | 7,672 | 30 | 40.0% |
| Perry, IA | 7,660 | 37 | 26.0% |
| Caribou, ME | 7,659 | 31 | 38.0% |
| Monahans, TX | 7,667 | 28 | 44.0% |
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