Smoke from Canadian wildfires is causing air quality concerns for millions of Americans in the Midwest and Northeast. Air quality alerts were in effect Tuesday in several states, including Wisconsin,

Air quality alerts are in effect on Tuesday in 10 states as toxic smoke from hundreds of wildfires burning in Canada continues to waft into the United States, creating hazy, gray skies over major metropolitan areas, including New York City.

State officials on Monday issued an air quality health advisory for Western New York and other regions through late Wednesday due to the smoke from ongoing wildfires in Canada. The advisory will be in effect until Wednesday at 11:59 p.