| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 19°F | 41°F | 29°F | 4.0" |
| February | 24°F | 43°F | 33°F | 2.0" |
| March | 28°F | 55°F | 40°F | 2.3" |
| April | 33°F | 64°F | 47°F | 2.2" |
| May | 43°F | 71°F | 56°F | 4.0" |
| June | 50°F | 82°F | 66°F | 1.2" |
| July | 56°F | 87°F | 71°F | 3.9" |
| August | 57°F | 85°F | 70°F | 1.9" |
| September | 53°F | 80°F | 65°F | 4.3" |
| October | 41°F | 68°F | 53°F | 1.6" |
| November | 30°F | 59°F | 43°F | 1.0" |
| December | 23°F | 46°F | 33°F | 1.6" |
| Index | Willard | New Mexico | National |
| Air quality index | 53 | 37 | 42 |
| Pollution index | 730,298 | 2,051,791 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 161 |
| Days with moderate air quality | 200 |
| Days w/ poor A.Q. for sensitive groups | 4 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.000% |
| Benzene | 0.010% |
| Carbon Tetrachloride | 0.001% |
| Lead | 0.000% |
| Mercury | 0.000% |
| City | Population | Air Quality Index | National Avg. |
| Mountainair, NM | 903 | 53 | 6.0% |
| Estancia, NM | 1,635 | 53 | 6.0% |
| Willard, NM | 327 | 53 | 6.0% |
| City | Population | Air Quality Index | National Avg. |
| King Salmon, AK | 327 | 31 | 38.0% |
| Fulton, AL | 327 | 36 | 28.0% |
| Mentone, AL | 327 | 39 | 22.0% |
| Chauncey, GA | 327 | 26 | 48.0% |
| Irwin, IA | 327 | 40 | 20.0% |
| Willard, NM | 327 | 53 | 6.0% |
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