At 4:47 p.m. on Tuesday, the National Weather Service reported an air quality alert in effect until Thursday at midnight for Northern Clinton and Southern Clinton.

Canada is battling more than 700 active wildfires across the country, roughly two-thirds of which are burning out of control, according to the Canadian Interagency Forest Fire Center (CIFFC). Smoke billowing from the blazes has blanketed central Canada and the northern U.S., prompting widespread air quality alerts.

Hundreds of wildfires burning in Canada are undermining U.S. air quality across the Upper Midwest and Northeast, making skies hazy from Detroit to New York City and even prompting a ground stop at Boston's Logan International Airport due to "low visibility.