Smoke from more than 100 wildfires blazing in Canada is expected to spread to impact air quality in more U.S. state.

Smoke from Canadian wildfires began to worsen air quality in the eastern U.S. on Wednesday as several Midwestern states ...

We will still have issues with air quality tonight and Thursday. Smoke from Canadian wildfires continues to stream ...

Smoke from Canadian wildfires spread over a third of the US, with poor air quality in parts of New York, New England, and the ...

The ongoing Canadian wildfires have reportedly blanketed a third of the United States, affecting millions, with the National ...

As hundreds of wildfires burn across Canada, smoke is traveling south and potentially affecting Americans’ health. Here's why ...

A series of wildfires burning across central Canada sent smoke billowing into the U.S. over the weekend, with few signs that ...

Parts of central Pennsylvania are under a code orange air quality alert, but the Midwest is seeing bigger air quality ...

As wildfires burn out of control in Canada, smoke is stretching cross the border into the United States, with some states ...

Parts of Montana, North Dakota, South Dakota, Minnesota, Iowa and Illinois had swaths of air quality warnings ranging ... air pollution and increased health concerns.

Smoke from wildfires burning in three Canadian provinces covered about a third of the U.S. on Wednesday, forecasters said, ...