Department meteorologists use monitoring data and weather forecast models to predict Wisconsin's future ozone (O₃) and fine particulate matter (PM_2.5) air quality using the Air Quality Index (AQI) [exit DNR]. This forecast is updated two-to-three times weekly throughout the year, and when warranted, an Air Quality Advisory is issued. Below is the latest air quality forecast for Wisconsin.

Monday, November 11 - Sunday, November 17, 2024

Ozone

Good AQI levels.

Particle pollution (PM_2.5)

Good to Moderate AQI levels.

Short-Term Forecast Maps:

Forecast AQI maps for the short-term forecast period.

The daily AQI is forecast for counties that monitor each pollutant of interest. The black dots represent the approximate location of Wisconsin's air quality monitors. Read the forecast summaries below for further geographic information.

Short-Term Forecast (Days 1-3)

Good AQI is forecast through the short-term period. Breezy, sunny, and seasonable conditions are forecast Monday and Tuesday as a high-pressure air mass moves over the Great Lakes region. Northwesterly flow will transition to southeasterly on Tuesday ahead of an approaching system. Increasing cloud cover overnight Tuesday into Wednesday morning will precede precipitation moving west-to-east through the PM hours Wednesday.

Extended Outlook (Days 4-7)

Precipitation looks to be ending over eastern areas on Thursday as drier air moves in from the west. High-pressure moving into the Midwest from the central Plains should then lead to decreasing clouds for Friday. Southerly flow is then anticipated for Saturday as the next system develops to our west. Currently, this system looks to move to our north on Sunday, allowing a mostly dry cold front to push through the state with minimal rain chances. Mostly Good AQI is expected through the extended period, with chances for Moderate AQI PM2.5 to develop.

Air Quality Index (AQI) ranges

For more information about AQI ranges and colors, see the U.S. EPA's Air Quality Index (AQI) Basics [exit DNR].