Dense smoke from wildfires in Canada is blowing into the United States, leading to air quality alerts in several states, including Wisconsin, Minnesota, and parts of Michigan. Residents in the Midwest are advised to prepare for unhealthy air conditions as smoke creates hazy skies and impacts visibility. Cities like Chicago and Kansas City are expected to experience significant air quality deterioration due to the drifting smoke. The situation is aggravated by rising temperatures and scattered thunderstorms forecasted for the weekend. Authorities are issuing advisories as the thick smoke continues to travel, affecting millions and prompting concerns for vulnerable populations.