Smoke blowing from Canadian wildfires hits Michigan again prompting an air quality alert. Haze from hundreds of fires has remained an issue much of the summer.
Millions of Michiganders are under advisory through Wednesday after air currents pushed smoke from Canada wildfires to Michigan and other parts of the Midwest.
Smoke from Canadian fires has made the air quality poor in the Midwest and East Coast. The National Weather Service issued an advisory from Monroe to Midland, with one ranking indicating Detroit on Wednesday had some of worst air pollution in the world.