Air quality alerts issued in Canada and US as wildfires continue to burn

Air quality alerts issued in Canada and the US due to ongoing wildfires, with Toronto experiencing some of the lowest air quality levels globally. Environment Canada warns residents to limit outdoor activities as wildfires in Manitoba, Saskatchewan, and northern Ontario displace thousands. Officials in Chicago also issue air quality alerts, urging precautions for vulnerable groups. Prime Minister Mark Carney to meet emergency responders in Ottawa to address the situation.