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 started making air quality worse in the eastern U.S. on Wednesday as several Midwestern states ...

In the U.S., smoke from Canadian wildfires was detected drifting through Montana, North Dakota and northern Minnesota.

Although the majority of wildfires are occurring in western Canada, smoke from these fires has been drifting eastward, ...

Wildfire smoke is causing or expected to cause poor air quality and reduced visibility as fires continue to burn throughout the Prairies. Parts of the Greater Toronto Area, as well as surrounding ...

Another large fire exacerbated by climate change is threatening the health of Chicagoans. Government officials issued an air ...

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

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

In addition to the eastern US, the smoke from the fires has caused air quality to drop to unhealthy levels in parts of the ...

The mid- and lower Hudson Valley is under an advisory for ground-level ozone pollution, which is expected to worsen air ...

EDT the National Weather Service reported an air quality alert in effect until Friday at noon EDT for Midland, Bay, Huron, ...

Here is what to know as of Monday, June 2. Parts of Montana, North Dakota, South Dakota, Minnesota, Iowa and Illinois had swaths of air quality warnings ranging from "moderate" and "unhealthy for ...