| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 25°F | 41°F | 32°F | 4.5" |
| February | 29°F | 47°F | 37°F | 1.1" |
| March | 36°F | 57°F | 45°F | 3.4" |
| April | 41°F | 63°F | 51°F | 1.8" |
| May | 49°F | 71°F | 59°F | 3.2" |
| June | 60°F | 83°F | 71°F | 2.6" |
| July | 62°F | 83°F | 71°F | 3.6" |
| August | 60°F | 80°F | 69°F | 3.2" |
| September | 54°F | 75°F | 64°F | 6.5" |
| October | 45°F | 64°F | 54°F | 3.8" |
| November | 34°F | 53°F | 43°F | 2.6" |
| December | 26°F | 41°F | 33°F | 2.4" |
| Index | Sombrillo | New Mexico | National |
| Air quality index | 41 | 37 | 42 |
| Pollution index | 756,526 | 2,051,791 | 2,726,193 |
| Measurement | Total |
| Days measured | 299 |
| Days with good air quality | 281 |
| Days with moderate air quality | 18 |
| Days w/ poor A.Q. for sensitive groups | |
| Days with unhealthy air quality |
| Pollutant | Total |
| Arsenic | 0.000% |
| Benzene | 0.010% |
| Carbon Tetrachloride | 0.002% |
| Lead | 0.000% |
| Mercury | 0.000% |
| City | Population | Air Quality Index | National Avg. |
| White Rock, NM | 5,845 | 8 | 84.0% |
| Los Alamos, NM | 12,978 | 8 | 84.0% |
| El Valle de Arroyo Seco, NM | 1,807 | 41 | 18.0% |
| La Puebla, NM | 1,061 | 41 | 18.0% |
| Pueblito, NM | 62 | 41 | 18.0% |
| Sombrillo, NM | 100 | 41 | 18.0% |
| City | Population | Air Quality Index | National Avg. |
| Kasaan, AK | 100 | 20 | 60.0% |
| Kaka, AZ | 100 | 74 | 48.0% |
| Cherokee, CA | 100 | 46 | 8.0% |
| Round Mountain, CA | 100 | 42 | 16.0% |
| Rutherford, CA | 100 | 35 | 30.0% |
| Sombrillo, NM | 100 | 41 | 18.0% |
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