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| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 19°F | 41°F | 28°F | 2.6" |
| February | 24°F | 46°F | 33°F | 1.0" |
| March | 32°F | 57°F | 42°F | 3.0" |
| April | 36°F | 61°F | 46°F | 6.1" |
| May | 46°F | 71°F | 57°F | 4.0" |
| June | 54°F | 81°F | 67°F | 6.8" |
| July | 63°F | 91°F | 76°F | 1.5" |
| August | 59°F | 86°F | 71°F | 5.3" |
| September | 52°F | 80°F | 65°F | 1.6" |
| October | 41°F | 68°F | 52°F | 4.1" |
| November | 31°F | 58°F | 42°F | 1.1" |
| December | 19°F | 42°F | 29°F | 2.0" |
| Index | Glendale CDP | Colorado | National |
| Air quality index | 58 | 38 | 42 |
| Pollution index | 10,406,900 | 2,068,342 | 2,726,193 |
| 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 | 0.080% |
| Benzene | 0.070% |
| Carbon Tetrachloride | 0.010% |
| Lead | 0.250% |
| Mercury | 0.100% |
| City | Population | Air Quality Index | National Avg. |
| Columbine Valley, CO | 1,498 | 58 | 16.0% |
| Highlands Ranch, CO | 107,017 | 58 | 16.0% |
| Lone Tree, CO | 13,381 | 58 | 16.0% |
| Northglenn, CO | 39,201 | 58 | 16.0% |
| Cherry Hills Village, CO | 6,680 | 58 | 16.0% |
| Glendale CDP, CO | 78 | 58 | 16.0% |
| City | Population | Air Quality Index | National Avg. |
| Sleetmute, AK | 78 | 31 | 38.0% |
| Palo Verde, CA | 78 | 45 | 10.0% |
| Emison, IN | 78 | 36 | 28.0% |
| Liberty, KS | 78 | 38 | 24.0% |
| De Witt, MO | 78 | 38 | 24.0% |
| Glendale CDP, CO | 78 | 58 | 16.0% |
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