| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 14°F | 31°F | 22°F | 2.9" |
| February | 18°F | 35°F | 26°F | 1.6" |
| March | 30°F | 49°F | 38°F | 2.6" |
| April | 38°F | 61°F | 48°F | 5.8" |
| May | 50°F | 74°F | 61°F | 5.4" |
| June | 59°F | 83°F | 71°F | 6.3" |
| July | 66°F | 90°F | 78°F | 3.9" |
| August | 61°F | 85°F | 72°F | 5.2" |
| September | 51°F | 74°F | 62°F | 2.8" |
| October | 40°F | 63°F | 51°F | 8.9" |
| November | 33°F | 51°F | 41°F | 2.9" |
| December | 20°F | 35°F | 27°F | 3.2" |
| Index | Dane | Wisconsin | National |
| Air quality index | 39 | 69 | 42 |
| Pollution index | 350,021 | 2,842,418 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 285 |
| Days with moderate air quality | 80 |
| Days w/ poor A.Q. for sensitive groups | 0 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.003% |
| Benzene | 0.010% |
| Carbon Tetrachloride | 0.001% |
| Lead | 0.001% |
| Mercury | 0.000% |
| City | Population | Air Quality Index | National Avg. |
| Bluffview, WI | 746 | 35 | 30.0% |
| Poynette, WI | 2,559 | 35 | 30.0% |
| Lake Wisconsin, WI | 4,736 | 35 | 30.0% |
| Prairie du Sac, WI | 4,557 | 35 | 30.0% |
| Lodi, WI | 3,180 | 35 | 30.0% |
| Dane, WI | 1,036 | 39 | 22.0% |
| City | Population | Air Quality Index | National Avg. |
| Midway, AR | 1,036 | 36 | 28.0% |
| Mountain Mesa, CA | 1,036 | 67 | 34.0% |
| Waynetown, IN | 1,036 | 42 | 16.0% |
| Scio, OR | 1,036 | 28 | 44.0% |
| Bethel Springs, TN | 1,036 | 27 | 46.0% |
| Dane, WI | 1,036 | 39 | 22.0% |