Hundreds of wildfires still burning in Canada are expected to undermine air quality across the Upper Midwest and Northeast into Tuesday.

New York City, Long Island and the Hudson Valley will all experience air quality within the 101-150 range on the air quality index Sunday, the state’s Department of Environmental Conservation ...

Wildfires in Canada have so far scorched 16.5 million acres, an area slightly larger than West Virginia. This Canadian fire season is on track to be the second-worst on record, according to ...

Maps show how thick the smoke is expected to be in the U.S. on Friday and Saturday. The wildfire smoke forecast for the U.S. on Friday, May 30, at 6 p.m. ET. CBS News ...

As Canada’s wildfire smoke creeps down into the U.S., it’s also transforming. Chemical reactions between gases and sunlight create ozone, which further exacerbates lung conditions like asthma.

More than 200 wildfires are raging across Canada, sending a thick blanket of choking smoke through the U.S. Midwest. Experts says climate change means U.S. residents better get used to it.

Smoke from wildfires in Canada has begun drifting across the border into the United States, raising concerns on Friday about possible health hazards in the Upper Midwest, the authorities said ...

The smoke is coming from 81 uncontrolled active wildfires in Canada across several provinces, including British Columbia, Alberta, Manitoba and Saskatchewan.

Republicans Decry Canada Wildfire Smoke After Passing “the Most Anti-Environment Bill” “They should take a closer look at their own voting records.” Oliver Milman Bio ...