| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 18°F | 49°F | 32°F | 0.5" |
| February | 21°F | 52°F | 35°F | 0.4" |
| March | 29°F | 63°F | 44°F | 0.9" |
| April | 35°F | 68°F | 51°F | 1.5" |
| May | 43°F | 76°F | 59°F | 1.8" |
| June | 54°F | 89°F | 71°F | 1.3" |
| July | 60°F | 91°F | 74°F | 2.5" |
| August | 58°F | 88°F | 72°F | 1.9" |
| September | 51°F | 83°F | 66°F | 1.3" |
| October | 38°F | 72°F | 54°F | 1.1" |
| November | 28°F | 61°F | 43°F | 0.4" |
| December | 18°F | 49°F | 32°F | 0.6" |
| Index | Walsenburg | Colorado | National |
| Air quality index | 20 | 38 | 50 |
| Pollution index | 372,584 | 2,034,619 | 5,066,862 |
| Measurement | Total |
| Days measured | 126 |
| Days with good air quality | 125 |
| Days with moderate air quality | 1 |
| Days w/ poor A.Q. for sensitive groups | 0 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.000% |
| Benzene | 0.010% |
| Carbon Tetrachloride | 0.000% |
| Lead | 0.000% |
| Mercury | 0.000% |
| City, State | Population | Air Quality Index | National Avg. |
| Lynn, CO | 4 | 20 | 60% |
| La Veta, CO | 703 | 20 | 60% |
| Walsenburg, CO | 2,917 | 20 | 60% |
| City, State | Population | Air Quality Index | National Avg. |
| Bal Harbour, FL | 2,917 | 41 | 18% |
| Drum Point, MD | 2,917 | 41 | 18% |
| Preston Heights, IL | 2,916 | 55 | 10% |
| The Plains, OH | 2,918 | 25 | 50% |
| Thermopolis, WY | 2,918 | 45 | 10% |
| Walsenburg, CO | 2,917 | 20 | 60% |
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