| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 7°F | 33°F | 19°F | 1.1" |
| February | 12°F | 37°F | 24°F | 0.9" |
| March | 20°F | 47°F | 33°F | 1.1" |
| April | 27°F | 55°F | 40°F | 1.8" |
| May | 34°F | 64°F | 48°F | 1.5" |
| June | 42°F | 78°F | 60°F | 0.7" |
| July | 48°F | 81°F | 64°F | 2.1" |
| August | 46°F | 78°F | 61°F | 1.5" |
| September | 39°F | 72°F | 54°F | 1.4" |
| October | 29°F | 59°F | 42°F | 1.5" |
| November | 19°F | 48°F | 32°F | 0.8" |
| December | 10°F | 34°F | 21°F | 1.1" |
| Index | Basalt | Colorado | National |
| Air quality index | 44 | 38 | 42 |
| Pollution index | 750,947 | 2,068,342 | 2,726,193 |
| Measurement | Total |
| Days measured | 364 |
| Days with good air quality | 289 |
| Days with moderate air quality | 75 |
| Days w/ poor A.Q. for sensitive groups | 0 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.001% |
| Benzene | 0.020% |
| Carbon Tetrachloride | 0.001% |
| Lead | 0.020% |
| Mercury | 0.000% |
| City | Population | Air Quality Index | National Avg. |
| Mulford, CO | 512 | 44 | 12.0% |
| Snowmass Village, CO | 2,786 | 44 | 12.0% |
| Catherine, CO | 219 | 44 | 12.0% |
| Woody Creek, CO | 212 | 44 | 12.0% |
| Carbondale, CO | 6,658 | 44 | 12.0% |
| Basalt, CO | 3,941 | 44 | 12.0% |
| City | Population | Air Quality Index | National Avg. |
| Waverly, NE | 3,941 | 31 | 38.0% |
| Prince Albert No. 461, SK | 3,940 | n/a | |
| Williamston, MI | 3,939 | 36 | 28.0% |
| Holloman AFB, NM | 3,943 | 10 | 80.0% |
| Putnam Lake, NY | 3,943 | 36 | 28.0% |
| Basalt, CO | 3,941 | 44 | 12.0% |
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