| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 26°F | 54°F | 39°F | 0.7" |
| February | 29°F | 60°F | 44°F | 0.3" |
| March | 35°F | 68°F | 52°F | 0.1" |
| April | 40°F | 73°F | 57°F | 0.1" |
| May | 45°F | 79°F | 63°F | 0.1" |
| June | 59°F | 92°F | 77°F | 0.5" |
| July | 63°F | 89°F | 76°F | 1.5" |
| August | 61°F | 87°F | 74°F | 2.6" |
| September | 56°F | 83°F | 69°F | 1.1" |
| October | 44°F | 75°F | 59°F | 0.3" |
| November | 34°F | 62°F | 47°F | 0.2" |
| December | 27°F | 54°F | 39°F | 0.9" |
| Index | Hanover | New Mexico | National |
| Air quality index | 37 | 37 | 42 |
| Pollution index | 975,581 | 2,051,791 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 362 |
| Days with moderate air quality | 3 |
| Days w/ poor A.Q. for sensitive groups | |
| Days with unhealthy air quality |
| 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. |
| Faywood, NM | 18 | 37 | 26.0% |
| Pinos Altos, NM | 209 | 37 | 26.0% |
| Silver City, NM | 9,530 | 37 | 26.0% |
| Arenas Valley, NM | 1,224 | 37 | 26.0% |
| Hurley, NM | 1,393 | 37 | 26.0% |
| Hanover, NM | 155 | 37 | 26.0% |
| City | Population | Air Quality Index | National Avg. |
| Aubrey, AR | 155 | 45 | 10.0% |
| Louann, AR | 155 | 35 | 30.0% |
| New Edinburg, AR | 155 | 35 | 30.0% |
| Hardwick, CA | 155 | 56 | 12.0% |
| Atwood, CO | 155 | 45 | 10.0% |
| Hanover, NM | 155 | 37 | 26.0% |
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