Central and northern Wisconsin are under an air quality advisory due to Canadian wildfire smoke, according to the National Weather Service in Sullivan. In those portions of the state, people can see smoke in the sky, and in some areas, on ground level, said Mark Gehring, NWS meteorologist. Visibilities are ranging from 4 to 7 miles in parts of west central and northern Wisconsin, as well as southern Minnesota, Gehring said. "That's from the smoke from the Canadian fires that flared...