| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 16°F | 32°F | 24°F | 1.7" |
| February | 17°F | 34°F | 25°F | 1.7" |
| March | 27°F | 46°F | 36°F | 2.5" |
| April | 37°F | 58°F | 46°F | 4.3" |
| May | 46°F | 69°F | 57°F | 3.5" |
| June | 57°F | 79°F | 67°F | 5.0" |
| July | 63°F | 84°F | 73°F | 3.7" |
| August | 63°F | 82°F | 72°F | 3.2" |
| September | 55°F | 75°F | 65°F | 2.9" |
| October | 44°F | 63°F | 53°F | 3.2" |
| November | 32°F | 51°F | 41°F | 2.4" |
| December | 21°F | 37°F | 28°F | 2.6" |
| Index | Marquette | Milwaukee | Wisconsin |
| Air quality index | 44 | 44 | 69 |
| Pollution index | 17,168,000 | 17,168,000 | 2,842,418 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 254 |
| Days with moderate air quality | 108 |
| Days w/ poor A.Q. for sensitive groups | 3 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.030% |
| Benzene | 0.160% |
| Carbon Tetrachloride | 0.050% |
| Lead | 0.160% |
| Mercury | 0.150% |
| City | Population | Air Quality Index | National Avg. |
| Oak Creek, WI | 36,321 | 39 | 22.0% |
| Wind Lake, WI | 5,407 | 39 | 22.0% |
| New Berlin, WI | 39,794 | 44 | 12.0% |
| South Milwaukee, WI | 20,857 | 44 | 12.0% |
| Wauwatosa, WI | 48,143 | 44 | 12.0% |
| Milwaukee, WI | 592,649 | 44 | 12.0% |
| City | Population | Air Quality Index | National Avg. |
| Baltimore, MD | 602,274 | 46 | 8.0% |
| Louisville, KY | 618,733 | 49 | 2.0% |
| Albuquerque, NM | 560,447 | 53 | 6.0% |
| Surrey, BC | 560,150 | n/a | |
| Québec, QC | 548,244 | n/a | |
| Milwaukee, WI | 592,649 | 44 | 12.0% |
Here are the best places to live in Wisconsin
These are the largest cities in Wisconsin
Most Dangerous States In The US
Check out the 10 most dangerous cities in Wisconsin