| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 15°F | 28°F | 21°F | 0.6" |
| February | 15°F | 29°F | 22°F | 2.8" |
| March | 27°F | 43°F | 34°F | 2.9" |
| April | 37°F | 55°F | 45°F | 3.1" |
| May | 47°F | 67°F | 56°F | 8.9" |
| June | 56°F | 76°F | 66°F | 19.6" |
| July | 61°F | 80°F | 70°F | 14.9" |
| August | 60°F | 78°F | 69°F | 2.3" |
| September | 53°F | 72°F | 61°F | 10.4" |
| October | 42°F | 59°F | 50°F | 6.6" |
| November | 31°F | 46°F | 38°F | 3.6" |
| December | 20°F | 32°F | 26°F | 1.8" |
| Index | Chenequa | Wisconsin | National |
| Air quality index | 37 | 69 | 42 |
| Pollution index | 2,032,370 | 2,842,418 | 2,726,193 |
| Measurement | Total |
| Days measured | 203 |
| Days with good air quality | 191 |
| Days with moderate air quality | 12 |
| Days w/ poor A.Q. for sensitive groups | 0 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.002% |
| Benzene | 0.030% |
| Carbon Tetrachloride | 0.001% |
| Lead | 0.000% |
| Mercury | 0.002% |
| City | Population | Air Quality Index | National Avg. |
| Oconomowoc, WI | 16,931 | 37 | 26.0% |
| Neosho, WI | 637 | 37 | 26.0% |
| Sullivan, WI | 710 | 37 | 26.0% |
| North Prairie, WI | 2,542 | 37 | 26.0% |
| Oconomowoc Lake, WI | 621 | 37 | 26.0% |
| Chenequa, WI | 583 | 37 | 26.0% |
| City | Population | Air Quality Index | National Avg. |
| Stinson Beach, CA | 583 | 40 | 20.0% |
| Bowen, IL | 583 | 41 | 18.0% |
| Mecca, IN | 583 | 45 | 10.0% |
| Higgins, TX | 583 | 15 | 70.0% |
| Manchester, VT | 583 | 35 | 30.0% |
| Chenequa, WI | 583 | 37 | 26.0% |
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