| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 8°F | 26°F | 17°F | 0.8" |
| February | 10°F | 30°F | 20°F | 1.0" |
| March | 24°F | 45°F | 34°F | 1.5" |
| April | 37°F | 61°F | 48°F | 3.5" |
| May | 49°F | 73°F | 60°F | 3.9" |
| June | 60°F | 82°F | 70°F | 4.8" |
| July | 65°F | 87°F | 76°F | 3.7" |
| August | 62°F | 83°F | 72°F | 5.3" |
| September | 54°F | 77°F | 64°F | 2.9" |
| October | 41°F | 62°F | 51°F | 3.1" |
| November | 27°F | 47°F | 37°F | 1.3" |
| December | 13°F | 30°F | 21°F | 1.6" |
| Index | Apple Valley | Minnesota | National |
| Air quality index | 46 | 35 | 42 |
| Pollution index | 7,686,740 | 1,854,519 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 214 |
| Days with moderate air quality | 148 |
| Days w/ poor A.Q. for sensitive groups | 2 |
| Days with unhealthy air quality | 1 |
| Pollutant | Total |
| Arsenic | 0.070% |
| Benzene | 0.100% |
| Carbon Tetrachloride | 0.010% |
| Lead | 0.350% |
| Mercury | 0.120% |
| City | Population | Air Quality Index | National Avg. |
| Vermillion, MN | 494 | 37 | 26.0% |
| Hampton, MN | 610 | 37 | 26.0% |
| New Trier, MN | 87 | 37 | 26.0% |
| Mendota Heights, MN | 11,733 | 46 | 8.0% |
| Burnsville, MN | 63,628 | 46 | 8.0% |
| Apple Valley, MN | 55,842 | 46 | 8.0% |
| City | Population | Air Quality Index | National Avg. |
| Normal, IL | 55,834 | 44 | 12.0% |
| Aloha, OR | 55,865 | 38 | 24.0% |
| Brookhaven, GA | 55,874 | 52 | 4.0% |
| Elyria, OH | 55,802 | 50 | = 100 |
| Westchester, FL | 55,883 | 41 | 18.0% |
| Apple Valley, MN | 55,842 | 46 | 8.0% |