Current air quality outlook
Department meteorologists use monitoring data and weather forecast models to predict Wisconsin's future air quality using the Air Quality Index (AQI) [exit DNR]. If warranted, an Air Quality Notice is issued. Below is the latest air quality forecast for Wisconsin.
Monday, November 29 - Sunday, December 05, 2021
Particle pollution (PM2.5)
Monday - Snow across the northeast part of the state will be the big weather story of the day with up to 4” of local accumulation possible and most areas seeing between 1-3”. Much of the state outside of western to southwestern areas could see some flurries associated with this system, but no significant accumulations are expected outside the northeast. Southerly winds ahead of the system will turn NW and Good AQI is forecast to continue.
Weather map for Monday, November 29, 2021. Graphic is courtesy of the NOAA/NWS Weather Prediction Center.
Tuesday - Mostly cloudy skies from Monday should trend sunnier on Tuesday with northwesterly flow encouraging seasonable temperatures. The relatively pleasant weather conditions for the last day of November will be accompanied by Good AQI.
Weather map for Tuesday, November 30, 2021. Graphic is courtesy of the NOAA/NWS Weather Prediction Center.
Wednesday - A system moving across the southern Canadian Provinces will bring our next round of precipitation on Wednesday. Temperatures are anticipated to be mild in southerly flow ahead of the system leading to high temperatures in the low-50s across west-southwestern areas and mostly rainfall across the state. However, temperatures should remain cold enough in the northeast for another quick shot of measurable snowfall in these areas. Good AQI is forecast to continue.
Mostly dry conditions alongside northwesterly flow are expected for Thursday, while some flurries will be possible in northern areas. Thursday night into Friday look to bring another round of precipitation, with southern areas currently looking to remain warm enough for rain, while measurable snowfall potential will exist to the north. Breezy northwesterly winds and mostly dry conditions on Saturday will begin to cool temperatures statewide before the next round of precipitation arrives Sunday with measurable snowfall possible for most. Good AQI is forecast through the extended period.
Note: All weather maps are courtesy of the NOAA/NWS Weather Prediction Center [exit DNR].
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].