Smoke from ongoing Canadian wildfires has led to some of the worst air quality in the world across parts of the U.S.

Canadian wildfire smoke has affected Wisconsin all week, prompting multiple air quality alert extensions from the DNR.

Most of the air quality alerts pertain to "sensitive groups," including people with heart or lung disease and asthma. However ...

Once again, the Canadian wildfires have impacted the air quality in Minnesota. We saw smoke spill into the state from Canada ...

Blazes burning across Canada are sending air quality plummeting in Detroit, Chicago, New York and other major U.S. cities ...

New York and other neighboring states are under an air-quality advisory due to influx of smoke from ongoing wildfires in ...

Smoke from more than 700 active wildfires in Canada is once again clouding skies and pushing air quality into dangerous ...

A wave of extreme weather is sweeping across the U.S., bringing deadly flash floods to the South, raging wildfires in the ...

A number of states in the United States have declared air quality warnings with concerning levels noted across many of the Great Lakes states including Wisconsin, Michigan, and Minnesota.

While the Air Quality Alert has been officially lifted, pockets of intense smoke could trigger another one on Monday or ...

Smoke from Canadian wildfires hovered over several Midwestern states Saturday, bringing warnings of unhealthy air for at ...