Canada wildfires: 81 million Americans under air quality alerts as blazes continue

Hundreds of fires across Canada and parts of the US prompt alerts in 14 states from Great Lakes region to the northeast

Hundreds of wildfires continued to burn across Canada and parts of the US on Tuesday sending smoke from the blazes across the region and reducing air quality in both countries.

US air quality tanked from the Great Lakes region to the northeast, making skies hazy from Minneapolis to New York City and even prompting a ground stop at Boston's Logan international airport due to low visibility" on Monday. Detroit, New York City and Chicago continued to record some of the worst air quality in the world on Tuesday, according to IQAir, ranking fourth, 10th and 11th respectively.