| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 16°F | 30°F | 22°F | 2.0" |
| February | 15°F | 29°F | 21°F | 1.5" |
| March | 25°F | 42°F | 32°F | 4.2" |
| April | 36°F | 55°F | 44°F | 2.5" |
| May | 46°F | 64°F | 54°F | 5.1" |
| June | 57°F | 77°F | 66°F | 1.9" |
| July | 61°F | 80°F | 70°F | 6.2" |
| August | 62°F | 79°F | 69°F | 5.1" |
| September | 55°F | 74°F | 63°F | 2.9" |
| October | 46°F | 61°F | 52°F | 4.4" |
| November | 31°F | 46°F | 37°F | 3.9" |
| December | 17°F | 29°F | 23°F | 26.5" |
| Index | Denmark | Wisconsin | National |
| Air quality index | 36 | 69 | 42 |
| Pollution index | 8,886,670 | 2,842,418 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 311 |
| Days with moderate air quality | 54 |
| Days w/ poor A.Q. for sensitive groups | 0 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.050% |
| Benzene | 0.090% |
| Carbon Tetrachloride | 0.020% |
| Lead | 0.060% |
| Mercury | 0.080% |
| City | Population | Air Quality Index | National Avg. |
| Ashwaubenon, WI | 17,130 | 36 | 28.0% |
| Francis Creek, WI | 606 | 36 | 28.0% |
| Mishicot, WI | 1,441 | 36 | 28.0% |
| Bellevue, WI | 15,812 | 36 | 28.0% |
| Kellnersville, WI | 340 | 36 | 28.0% |
| Denmark, WI | 2,346 | 36 | 28.0% |
| City | Population | Air Quality Index | National Avg. |
| Helper, UT | 2,346 | 46 | 8.0% |
| Fremont, IN | 2,345 | 45 | 10.0% |
| Curwensville, PA | 2,345 | 33 | 34.0% |
| Walkerton, IN | 2,344 | 42 | 16.0% |
| Salmon Brook, CT | 2,348 | 41 | 18.0% |
| Denmark, WI | 2,346 | 36 | 28.0% |
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