The Wisconsin Department of Natural Resources has issued an Air Quality Advisory for PM2.5 which will remain in effect until noon Thursday, June 29th. This advisory affects all of southern and south central Wisconsin.

Smoke originating from Canadian wildfires will spread from north-to-south on Monday, June 26, impacting PM2.5 concentrations at the surface. We expect this situation to remain highly dynamic over the coming days and will adjust messaging as needed.

For Monday, June 26th, we expect the heaviest smoke impacts across the eastern half of the state, where the Air Quality Index (AQI) is expected to be within the UNHEALTHY category but could reach the VERY UNHEALTHY category. People with heart or lung disease, older adults, and children should avoid prolonged or heavy exertion and consider avoiding all 
physical outdoor activities; everyone else should reduce prolonged or heavy exertion and consider avoiding prolonged or heavy exertion.

At this time, we anticipate the eastern half of the state to see the heaviest surface smoke through the episode, with noon Tuesday through noon Wednesday currently appearing to be the timing of heaviest impact. The AQI will likely range from the UNHEALTHY to VERY UNHEALTHY categories, but we cannot rule out the possibility of the AQI reaching the HAZARDOUS category.

For more information on current air quality, please see: https://airquality.wi.gov