| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 13°F | 39°F | 26°F | 5.6" |
| February | 22°F | 44°F | 32°F | 3.6" |
| March | 24°F | 56°F | 39°F | 1.6" |
| April | 29°F | 64°F | 46°F | 4.6" |
| May | 37°F | 72°F | 55°F | 1.3" |
| June | 42°F | 83°F | 64°F | 0.9" |
| July | 52°F | 90°F | 71°F | 1.8" |
| August | 52°F | 85°F | 68°F | 2.7" |
| September | 44°F | 78°F | 60°F | 3.3" |
| October | 34°F | 66°F | 49°F | 3.3" |
| November | 22°F | 55°F | 37°F | 1.8" |
| December | 14°F | 39°F | 26°F | 3.8" |
| Index | Ignacio | Colorado | National |
| Air quality index | 44 | 38 | 42 |
| Pollution index | 2,963,190 | 2,068,342 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 276 |
| Days with moderate air quality | 89 |
| Days w/ poor A.Q. for sensitive groups | 0 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 1.050% |
| Benzene | 0.020% |
| Carbon Tetrachloride | 0.004% |
| Lead | 0.040% |
| Mercury | 0.010% |
| City | Population | Air Quality Index | National Avg. |
| Southern Ute, CO | 199 | 44 | 12.0% |
| Bayfield, CO | 2,550 | 44 | 12.0% |
| Durango, CO | 19,413 | 44 | 12.0% |
| Young Place, NM | 99 | 44 | 12.0% |
| Arboles, CO | 410 | 44 | 12.0% |
| Ignacio, CO | 1,411 | 44 | 12.0% |
| City | Population | Air Quality Index | National Avg. |
| Strawberry Point, IA | 1,411 | 39 | 22.0% |
| Harlan, KY | 1,411 | 39 | 22.0% |
| Moravia, NY | 1,411 | 34 | 32.0% |
| Buchanan Dam, TX | 1,411 | 42 | 16.0% |
| Norton, NB | 1,411 | n/a | |
| Ignacio, CO | 1,411 | 44 | 12.0% |
Here are the best places to live in Colorado
Check out the 10 safest cities in Colorado
These are the 10 most affordable cities in Colorado
Top 10 best public schools in Ignacio