Over 100 million Americans are under air quality alerts as smoke from persistent Canadian wildfires moves across the country, with Detroit documenting the worst air quality in the world for a time on Wednesday. #AlexPerez reports. #wnt#worldnewstonight#news#wildfire#airquality
Over 100 million Americans are under air quality alerts as smoke from persistent Canadian wildfires moves across the country, with Detroit documenting the worst air quality in the world for a time on Wednesday. #AlexPerez reports. #wnt #worldnewstonight #news #wildfire #airquality