| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 10°F | 44°F | 25°F | 0.3" |
| February | 12°F | 45°F | 27°F | 0.5" |
| March | 21°F | 58°F | 38°F | 0.7" |
| April | 29°F | 64°F | 45°F | 1.6" |
| May | 37°F | 72°F | 54°F | 2.3" |
| June | 48°F | 85°F | 66°F | 2.2" |
| July | 54°F | 90°F | 72°F | 2.2" |
| August | 52°F | 86°F | 69°F | 2.9" |
| September | 43°F | 80°F | 61°F | 1.2" |
| October | 31°F | 67°F | 47°F | 0.8" |
| November | 19°F | 55°F | 35°F | 0.3" |
| December | 9°F | 42°F | 24°F | 0.3" |
| Index | Arriba | Colorado | National |
| Air quality index | 45 | 38 | 42 |
| Pollution index | 583,950 | 2,068,342 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 259 |
| Days with moderate air quality | 106 |
| 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 | Population | Air Quality Index | National Avg. |
| Hugo, CO | 749 | 45 | 10.0% |
| Flagler, CO | 519 | 45 | 10.0% |
| Genoa, CO | 131 | 45 | 10.0% |
| Arriba, CO | 175 | 45 | 10.0% |
| City | Population | Air Quality Index | National Avg. |
| Seldovia Village, AK | 175 | 31 | 38.0% |
| Kellyton, AL | 175 | 38 | 24.0% |
| Fountain Hill, AR | 175 | 35 | 30.0% |
| Elk Creek, CA | 175 | 46 | 8.0% |
| Silver Plume, CO | 175 | 47 | 6.0% |
| Arriba, CO | 175 | 45 | 10.0% |
Here are the best places to live in Colorado
Check out the 10 safest cities in Colorado
These are the 10 cheapest cities in Colorado
These are the largest cities in Colorado