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Noise monitoring program

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.

Thursday, January 14 - Wednesday, January 20, 2021

Ozone

Good levels.

Particle pollution (PM2.5)

Good to Moderate levels.

Weather outlook

Thursday - Widespread Moderate AQI should trend towards Good AQI as we work through tonight into Friday morning. A low pressure system and associated precipitation working its way over the state today will bring measurable snowfall for most into Friday morning, with areas of mixed precipitation possible.

Weather map for the current forecast period.

Weather map for Thursday, January 14, 2021. Graphic is courtesy of the NOAA/NWS Weather Prediction Center.

Friday - The heaviest precipitation is anticipated Thursday afternoon into Friday morning, before plenty of cloud cover with remnant wraparound precipitation chances take hold throughout the day Friday. Winds turn northerly by Friday night with Good AQI forecast.

Weather map for the current forecast period.

Weather map for Friday, January 15, 2021. Graphic is courtesy of the NOAA/NWS Weather Prediction Center.

Saturday - Precipitation will wrap up by Saturday morning, while cloud cover looks to stick around. Northerly winds should bring slightly cooler temperatures and help to maintain Good AQI.

Extended outlook

Cloudy skies and cooler temperatures currently look to stick around for Sunday. The next system moving in from the west looks to arrive Monday into Tuesday, with another round of snow possible. Good to Low-Moderate AQI is likely to persist into early next week.

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 - A Guide to Air Quality and Your Health [exit DNR].