| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 16°F | 49°F | 31°F | 0.6" |
| February | 18°F | 53°F | 34°F | 0.4" |
| March | 25°F | 62°F | 42°F | 0.7" |
| April | 32°F | 68°F | 49°F | 0.7" |
| May | 40°F | 76°F | 58°F | 1.2" |
| June | 50°F | 88°F | 69°F | 1.7" |
| July | 55°F | 89°F | 71°F | 3.2" |
| August | 54°F | 87°F | 69°F | 2.6" |
| September | 47°F | 81°F | 62°F | 2.3" |
| October | 35°F | 71°F | 51°F | 1.0" |
| November | 24°F | 60°F | 40°F | 0.3" |
| December | 16°F | 48°F | 30°F | 0.5" |
| Index | Folsom | New Mexico | National |
| Air quality index | 15 | 37 | 42 |
| Pollution index | 159,260 | 2,051,791 | 2,726,193 |
| Measurement | Total |
| Days measured | 358 |
| Days with good air quality | 334 |
| Days with moderate air quality | 24 |
| Days w/ poor A.Q. for sensitive groups | 0 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.000% |
| Benzene | 0.003% |
| Carbon Tetrachloride | 0.000% |
| Lead | 0.000% |
| Mercury | 0.000% |
| City | Population | Air Quality Index | National Avg. |
| Capulin, NM | 19 | 15 | 70.0% |
| Des Moines, NM | 104 | 15 | 70.0% |
| Branson, CO | 75 | 20 | 60.0% |
| Folsom, NM | 85 | 15 | 70.0% |
| City | Population | Air Quality Index | National Avg. |
| Anvik, AK | 85 | 31 | 38.0% |
| Truxton, AZ | 85 | 13 | 74.0% |
| Segundo, CO | 85 | 15 | 70.0% |
| Basco, IL | 85 | 29 | 42.0% |
| Sciota, IL | 85 | 29 | 42.0% |
| Folsom, NM | 85 | 15 | 70.0% |
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