| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 28°F | 48°F | 37°F | 0.1" |
| February | 31°F | 53°F | 40°F | 0.0" |
| March | 36°F | 60°F | 47°F | 0.0" |
| April | 41°F | 66°F | 53°F | 0.0" |
| May | 48°F | 72°F | 60°F | 0.2" |
| June | 58°F | 83°F | 70°F | 0.5" |
| July | 59°F | 81°F | 69°F | 1.2" |
| August | 58°F | 78°F | 67°F | 1.2" |
| September | 53°F | 74°F | 62°F | 1.5" |
| October | 45°F | 67°F | 55°F | 0.5" |
| November | 36°F | 57°F | 45°F | 0.2" |
| December | 29°F | 48°F | 37°F | 0.2" |
| Index | Capitan | New Mexico | National |
| Air quality index | 10 | 37 | 42 |
| Pollution index | 1,019,480 | 2,051,791 | 2,726,193 |
| Measurement | Total |
| Days measured | 50 |
| Days with good air quality | 50 |
| Days with moderate air quality | 0 |
| 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 | 0.002% |
| Lead | 0.010% |
| Mercury | 0.000% |
| City | Population | Air Quality Index | National Avg. |
| Ruidoso, NM | 7,879 | 10 | 80.0% |
| Ruidoso Downs, NM | 2,611 | 10 | 80.0% |
| Nogal, NM | 126 | 10 | 80.0% |
| Capitan, NM | 1,356 | 10 | 80.0% |
| City | Population | Air Quality Index | National Avg. |
| Cactus Flats, AZ | 1,356 | 47 | 6.0% |
| New Milford, IL | 1,356 | 42 | 16.0% |
| Gloster, MS | 1,356 | 45 | 10.0% |
| Cairo, NY | 1,356 | 37 | 26.0% |
| Duboistown, PA | 1,356 | 35 | 30.0% |
| Capitan, NM | 1,356 | 10 | 80.0% |
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