Noise monitoring program

Department meteorologists use monitoring data and weather forecast models to predict Wisconsin's future ozone (O3) and fine particulate matter (PM2.5) 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, February 26 - Sunday, March 3, 2024


Good levels.

Particle pollution (PM2.5)

Good to Moderate 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)

A robust low-pressure system will impact the region through the short-term period, starting with breezy southerly winds under mostly sunny skies on Monday leading to well above normal temperatures for late February. Temperatures will climb even higher for southern Wisconsin on Tuesday as the low-pressure system moves over the state, where thunderstorm development will be possible. A strong cold front will then quickly traverse the state late Tuesday into early Wednesday with gusty northwesterly winds drastically reducing temperatures and changing over any remaining precip to a wintery mix. Clouds will quickly diminish on Wednesday leaving mostly sunny skies to accompany temperatures much closer to normal for the end of February. High wind speeds during this active period should promote Good AQI PM2.5 through the short-term period. However, Moderate AQI PM2.5 potential will be in place both Monday and Tuesday due to southerly flow and the possibility of smoke from fires in the southern Plains impacting the area.

Extended Outlook (Days 4-7)

Temperatures will rebound quickly to well above normal values with strong southerly flow and mostly sunny skies returning Thursday through Saturday. Depending on the speed of the next system, we may even see continued sun alongside mild temperatures on Sunday, but eventually this system is likely to bring another shot of storms followed by drastically falling temperatures in the Sunday to Monday timeframe. With southerly flow expected through the extended period, Moderate AQI PM2.5 will remain a possibility.


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].