| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 18°F | 32°F | 24°F | 2.5" |
| February | 17°F | 30°F | 23°F | 2.7" |
| March | 28°F | 45°F | 36°F | 2.6" |
| April | 37°F | 58°F | 46°F | 3.8" |
| May | 47°F | 69°F | 57°F | 4.3" |
| June | 59°F | 81°F | 70°F | 3.9" |
| July | 60°F | 82°F | 71°F | 3.3" |
| August | 62°F | 81°F | 71°F | 9.0" |
| September | 55°F | 78°F | 66°F | 3.6" |
| October | 46°F | 65°F | 55°F | 3.5" |
| November | 31°F | 48°F | 39°F | 3.6" |
| December | 17°F | 30°F | 24°F | 2.3" |
| Index | Kenosha | Wisconsin | National |
| Air quality index | 39 | 69 | 42 |
| Pollution index | 3,131,700 | 2,842,418 | 2,726,193 |
| Measurement | Total |
| Days measured | 203 |
| Days with good air quality | 174 |
| Days with moderate air quality | 28 |
| Days w/ poor A.Q. for sensitive groups | 1 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.010% |
| Benzene | 0.030% |
| Carbon Tetrachloride | 0.010% |
| Lead | 0.004% |
| Mercury | 0.360% |
| City | Population | Air Quality Index | National Avg. |
| Lindenhurst, IL | 14,317 | 39 | 22.0% |
| Old Mill Creek, IL | 200 | 39 | 22.0% |
| Beach Park, IL | 13,433 | 39 | 22.0% |
| Lake Villa, IL | 8,601 | 39 | 22.0% |
| Winthrop Harbor, IL | 6,675 | 39 | 22.0% |
| Kenosha, WI | 99,767 | 39 | 22.0% |
| City | Population | Air Quality Index | National Avg. |
| Vacaville, CA | 99,958 | 35 | 30.0% |
| Spokane Valley, WA | 99,275 | 43 | 14.0% |
| Carmel, IN | 99,130 | 54 | 8.0% |
| Roanoke, VA | 99,122 | 38 | 24.0% |
| Saint-Jean-sur-Richelieu, QC | 99,027 | n/a | |
| Kenosha, WI | 99,767 | 39 | 22.0% |
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