CHICAGO — Smoke from wildfires in Canada has left parts of the United States with air quality at risk.
A small amount of haze is expected in Chicago and parts of Illinois on Friday, but most of the heavy smoke is expected to persist east and south into North Carolina.
Due to the smoke, air quality action days have been declared for all of Indiana on Wednesday, Thursday and Friday.
According to the Indiana Department of Environmental Protection, fine particulate matter is in the forecast for Friday.
IDEM said particles include microscopic dust, soot and liquid that can lodge in the lungs and be difficult to breathe out.
National Weather Service said people with chronic respiratory diseases should limit their stay in the fresh air.
An air quality alert has been issued in 24 states.
Earlier this week, people in New York City and parts of the Northeast were urged to stay indoors due to unsafe conditions.
Millions of residents could see this on Thursday. The conditions sent asthma sufferers to the hospital, delayed flights, delayed games and even delayed the White House’s Pride Month celebration. Fires sent up columns of fine solid particles as far away as North Carolina and northern Europe, and parked clumps of air rated unhealthy or worse over the densely populated East Coast.
This week, air quality in places including New York City, the nation’s most populous city, nearly reached the top of the U.S. Environmental Protection Agency’s rating the scale of air pollution. Local authorities urged people to stay indoors as much as possible and wear face masks when they go out.