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

When combined with the Philly area’s warm, sunny weather, the incoming smoke stands to increase levels of ozone, the ...

Detroit currently is ranked third worst worldwide for major city air quality today, Aug. 4, because of smoke from Canadian ...

Minneapolis had the fifth worst air quality among 125 cities worldwide on Saturday morning, according to an international air ...

Wildfires burning in Canada were causing unhealthy air quality across parts of North America on Monday. Canadian wildfires ...

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

The air quality in Minnesota has never been so bad for so long. Experts recommend limiting outdoor activities.

Forecasters say weak winds have left Canadian wildfire smoke to linger over the U.S. Stronger winds are expected to bring relief later in the week.

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

Homeowners know the saying, "water finds a way." Add wildfire smoke to that distinction, another savvy invader harming indoor ...