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.
Thursday, March 28 – Wednesday, April 3, 2024
Ozone
Good levels.
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Particle pollution (PM2.5)
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Good to Moderate levels.
Short-Term Forecast Maps:
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)
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High-pressure will lead to a mostly sunny but cool day across the state on Thursday with weakening winds out of the west. Good AQI PM2.5 is forecast with a slight chance for Low-Moderate AQI downwind of the Twin Cities. On Friday, an upper-level disturbance will be moving in from the west, leading to increasing cloud cover and eventually precipitation chances late Friday into Saturday. Precipitation chances will then diminish through the second half of Saturday as high-pressure returns to the area. While Good AQI PM2.5 is forecast for Friday and Saturday, numerous prescribed burns are currently taking place across the Flint Hills of Kansas, Nebraska, and Oklahoma. While most smoke models show little to no impacts at the surface across Wisconsin, if we do see any smoke the best chances will be across the southwest, particularly the Mississippi River Valley, where Low-Moderate AQI PM2.5 could develop.
Extended Outlook (Days 4-7)
High-pressure will be exiting quickly on Sunday as low-pressure develops over the Plains and a warm front begins to push north, leading to precipitation chances for southern Wisconsin Sunday afternoon. The low-pressure system is then forecast to move through the Ohio River Valley in the Monday to Tuesday timeframe, maintaining cloudier conditions and precipitation chances for southern Wisconsin as northern areas should remain dry while seeing a fair amount of sun. Northwest winds, dry conditions, and mostly sunny skies are then expected to return on the backend of the system come Wednesday. While chances for Moderate AQI PM2.5 will stick around southern Wisconsin for Sunday, the active pattern and favorable winds should lead to Good AQI PM2.5 through the remainder of the extended period.
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].
Source: https://t-tees.com
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