| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 21°F | 45°F | 31°F | 1.8" |
| February | 22°F | 46°F | 32°F | 2.0" |
| March | 30°F | 58°F | 42°F | 2.1" |
| April | 35°F | 63°F | 47°F | 4.0" |
| May | 44°F | 70°F | 55°F | 5.2" |
| June | 54°F | 84°F | 68°F | 4.6" |
| July | 60°F | 89°F | 73°F | 5.7" |
| August | 59°F | 87°F | 71°F | 4.5" |
| September | 51°F | 79°F | 63°F | 5.7" |
| October | 39°F | 67°F | 51°F | 4.1" |
| November | 29°F | 56°F | 41°F | 2.2" |
| December | 19°F | 44°F | 30°F | 2.9" |
| Index | Lodo | Denver | Colorado |
| Air quality index | 58 | 58 | 38 |
| Pollution index | 9,869,240 | 9,869,240 | 2,068,342 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 91 |
| Days with moderate air quality | 252 |
| Days w/ poor A.Q. for sensitive groups | 20 |
| Days with unhealthy air quality | 2 |
| Pollutant | Total |
| Arsenic | 0.060% |
| Benzene | 0.140% |
| Carbon Tetrachloride | 0.000% |
| Lead | 0.030% |
| Mercury | 0.030% |
| City | Population | Air Quality Index | National Avg. |
| Broomfield, CO | 69,444 | 47 | 6.0% |
| Eldorado Springs, CO | 325 | 47 | 6.0% |
| Superior, CO | 13,292 | 47 | 6.0% |
| Shaw Heights, CO | 5,987 | 58 | 16.0% |
| Englewood, CO | 34,840 | 58 | 16.0% |
| Denver, CO | 715,878 | 58 | 16.0% |
| City | Population | Air Quality Index | National Avg. |
| Washington, DC | 701,974 | 47 | 6.0% |
| Brampton, ON | 735,754 | n/a | |
| Vancouver, BC | 694,440 | n/a | |
| Seattle, WA | 741,251 | 45 | 10.0% |
| Boston, MA | 689,326 | 43 | 14.0% |
| Denver, CO | 715,878 | 58 | 16.0% |
Here are the best places to live in Colorado
Check out the 10 most dangerous cities in Colorado
Most Dangerous States In The US
Check out the 10 safest cities in Colorado