US heat advisories and extreme heat warnings are posted across parts of the west, including California, Nevada, Arizona, ...

Smoke from hundreds of wildfires in Canada has choked the skies over dozens of northern U.S. states in the Great Lakes and ...

For most of the past decade, forecasters have been able to use satellites to track these smoke plumes, but the view was only ...

The hazy air hovering over US cities, including Chicago and New York, this summer is reminding Americans of just how ...

More than 30,000 acres in northwest Colorado have been destroyed by the Lee and Elk fires since Aug. 2. See the updates.

Canadian wildfire smoke is causing poor air quality today. Those with respiratory issues should limit outdoor time. Inland ...

Meteorologist Matt Hoenig says Canadian wildfire smoke is still making the air unhealthy, but better conditions are on the way.

At least three people have been injured and hundreds of homes and businesses are at risk in California as a massive wildfire ...

Air quality in parts of Michigan, Wisconsin, New York and Ohio was in the "unhealthy" category on Monday morning ...

Millions of people were told to monitor themselves for the symptoms at least through Monday night, but possibly longer.

The altitude of the smoke matters ... satellite-tech-can-map-them-in-3d-for-air-quality-alerts-at-neighborhood-scale-259654. Got a question? Put a reporter on it. Ever think of a question that you ...