Midwest and Northeast regions in the U.S. are seeing poor air quality from Canadian wildfires. See the map showing where the wildfires burn.

Millions in the U.S. face health threats as Canadian wildfire smoke causes air quality to plummet and triggers official advisories.

Wildfire smoke from Canada has traveled to West Michigan, leaving a smoky haze. Here's how to track it where you live: ...

A statewide air quality advisory remains in place for Aug. 5. Officials say wildfire smoke may dissipate by mid-week. Check ...

The thick plumes of smoke in Canada are being driven southward into the U.S. by northerly winds on the backside of an area of high pressure.

The National Weather Service announced air quality alerts in 10 states Tuesday as smoke from the Canadian wildfires continues ...

The air quality in several U.S. states is taking a hit as smoke floats over the border from the Canadian wildfires. Here's ...

The air quality index on Tuesday across the Midwest and the Northeast ranged from "moderate" to "unhealthy" for sensitive adults. Some areas in northern Wisconsin, eastern Pennsylvania, northern ...

Air quality alerts spanned at least 13 U.S. states on Tuesday, with sensitive groups urged to limit outdoor activity to avoid ...

Air Quality Advisory continues across the state Tuesday. Canadian wildfire smoke could continue into the first half of Wednesday as high pressure gradually tracks east. With this ...

Smoke from Canadian wildfires is causing air quality concerns for millions of Americans in the Midwest and Northeast.