| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 11°F | 34°F | 20°F | 6.4" |
| February | 17°F | 40°F | 27°F | 1.1" |
| March | 25°F | 51°F | 36°F | 1.6" |
| April | 30°F | 59°F | 44°F | 1.8" |
| May | 38°F | 68°F | 52°F | 2.4" |
| June | 46°F | 82°F | 64°F | 1.3" |
| July | 52°F | 85°F | 69°F | 2.2" |
| August | 50°F | 82°F | 66°F | 1.7" |
| September | 42°F | 76°F | 58°F | 2.6" |
| October | 32°F | 62°F | 45°F | 2.8" |
| November | 22°F | 49°F | 33°F | 1.9" |
| December | 12°F | 35°F | 22°F | 1.1" |
| Index | Hot Sulphur Springs | Colorado | National |
| Air quality index | 47 | 38 | 42 |
| Pollution index | 407,212 | 2,068,342 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 227 |
| Days with moderate air quality | 133 |
| Days w/ poor A.Q. for sensitive groups | 5 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.000% |
| Benzene | 0.005% |
| Carbon Tetrachloride | 0.000% |
| Lead | 0.001% |
| Mercury | 0.000% |
| City | Population | Air Quality Index | National Avg. |
| Heeney, CO | 65 | 47 | 6.0% |
| Parshall, CO | 23 | 47 | 6.0% |
| Tabernash, CO | 624 | 47 | 6.0% |
| Grand Lake, CO | 262 | 47 | 6.0% |
| Granby, CO | 2,281 | 47 | 6.0% |
| Hot Sulphur Springs, CO | 890 | 47 | 6.0% |
| City | Population | Air Quality Index | National Avg. |
| Royal Center, IN | 890 | 37 | 26.0% |
| Walker, MN | 890 | 29 | 42.0% |
| El Rancho Vela, TX | 890 | 42 | 16.0% |
| Argyle, WI | 890 | 29 | 42.0% |
| Deschaillons-sur-Saint-Laurent, QC | 890 | n/a | |
| Hot Sulphur Springs, CO | 890 | 47 | 6.0% |
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