| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | -8°F | 70°F | 31°F | 0.5" |
| February | -11°F | 77°F | 34°F | 0.3" |
| March | 9°F | 75°F | 41°F | 0.8" |
| April | 16°F | 82°F | 47°F | 2.1" |
| May | 23°F | 91°F | 57°F | 1.6" |
| June | 36°F | 99°F | 67°F | 2.1" |
| July | 48°F | 104°F | 74°F | 1.8" |
| August | 46°F | 100°F | 70°F | 2.7" |
| September | 34°F | 91°F | 62°F | 0.9" |
| October | 18°F | 86°F | 49°F | 1.5" |
| November | 1°F | 79°F | 42°F | 0.3" |
| December | -13°F | 68°F | 28°F | 1.2" |
| Index | Aurora | Colorado | National |
| Air quality index | 54 | 38 | 50 |
| Pollution index | 10,406,900 | 2,034,619 | 5,066,862 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 153 |
| Days with moderate air quality | 189 |
| Days w/ poor A.Q. for sensitive groups | 23 |
| Days with unhealthy air quality |
| Pollutant | Total |
| Arsenic | 0.080% |
| Benzene | 0.070% |
| Carbon Tetrachloride | 0.010% |
| Lead | 0.250% |
| Mercury | 0.100% |
| City, State | Population | Air Quality Index | National Avg. |
| Broomfield, CO | 62,449 | 42 | 16% |
| Arvada, CO | 113,532 | 54 | 8% |
| Centennial, CO | 107,862 | 54 | 8% |
| Columbine Valley, CO | 1,190 | 54 | 8% |
| Dove Valley, CO | 5,358 | 54 | 8% |
| Aurora, CO | 351,131 | 54 | 8% |
| City, State | Population | Air Quality Index | National Avg. |
| Honolulu, HI | 349,597 | 30 | 40% |
| Anaheim, CA | 346,776 | 85 | 70% |
| Tampa, FL | 361,477 | 43 | 14% |
| Bakersfield, CA | 367,555 | 79 | 58% |
| Santa Ana, CA | 333,605 | 85 | 70% |
| Aurora, CO | 351,131 | 54 | 8% |