| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 7°F | 31°F | 18°F | 1.8" |
| February | 8°F | 31°F | 20°F | 1.3" |
| March | 13°F | 37°F | 25°F | 2.0" |
| April | 21°F | 46°F | 32°F | 2.3" |
| May | 28°F | 57°F | 41°F | 1.9" |
| June | 33°F | 67°F | 50°F | 1.4" |
| July | 40°F | 74°F | 57°F | 2.0" |
| August | 39°F | 68°F | 53°F | 3.5" |
| September | 33°F | 63°F | 48°F | 3.1" |
| October | 25°F | 52°F | 37°F | 3.6" |
| November | 16°F | 41°F | 27°F | 1.7" |
| December | 5°F | 26°F | 16°F | 2.8" |
| Index | Smeltertown | Colorado | National |
| Air quality index | 16 | 38 | 42 |
| Pollution index | 192,920 | 2,068,342 | 2,726,193 |
| Measurement | Total |
| Days measured | 62 |
| Days with good air quality | 60 |
| Days with moderate air quality | 2 |
| Days w/ poor A.Q. for sensitive groups | |
| Days with unhealthy air quality |
| 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. |
| Howard, CO | 769 | 16 | 68.0% |
| Maysville, CO | 101 | 16 | 68.0% |
| Poncha Springs, CO | 1,041 | 16 | 68.0% |
| Coaldale, CO | 462 | 16 | 68.0% |
| Salida, CO | 5,543 | 16 | 68.0% |
| Smeltertown, CO | 72 | 16 | 68.0% |
| City | Population | Air Quality Index | National Avg. |
| New Blaine, AR | 72 | 36 | 28.0% |
| Seba Dalkai, AZ | 72 | 45 | 10.0% |
| Mabie, CA | 72 | 44 | 12.0% |
| Ranger, GA | 72 | 43 | 14.0% |
| Cromwell, IA | 72 | 39 | 22.0% |
| Smeltertown, CO | 72 | 16 | 68.0% |
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