Maps show where new plumes of smoke will cause hazy skies through the end of the week. Low-level smoke is forecast to spread eastward Wednesday across the Appalachians and into the Mid-Atlantic and Northeast.

Smoke from Canadian wildfires will produce unhealthy air quality in Wisconsin on May 30. The Department of Natural Resources said in a statement May 29 that as the wildfire smoke pushes in ahead of a cold front, much of the state will potentially reach the Red Air Quality Index, which is considered unhealthy for people.