Much of the Upper Midwest on Saturday was dealing with swaths of unhealthy air due to drifting smoke from Canadian wildfires.

A haze visible in parts of the Sacramento Valley is from multiple wildfires burning in Northern California. A north wind is ...

The Grand Canyon’s North Rim in Arizona also closed Thursday because of a wildfire on adjacent Bureau of Land Management land ...

The north rim of Grand Canyon National Park has now been closed and evacuations have been ordered as a wildfire is spreading.

Wildfires raging near the Grand Canyon's North Rim have prompted evacuations, air quality concerns and the closure of the ...

Hundreds of visitors and residents were evacuated from the North Rim of Grand Canyon National Park this week as two wildfires ...

Researchers at the University of Colorado Boulder found that wildfires in Colorado and throughout the western United States ...

New mapping shows the Green Mountain Fire, burning six miles south of Ovando, has scorched 18 acres, but officials say it's ...

A rapidly growing fire near the Grand Canyon has expanded more than ten times in size over the last 24 hours.

Nearly 400 firefighters are working to protect homes and infrastructure along the highway corridor between Nenana and ...

The South Rim Fire near Gunnison grew to almost 3,000 acres Saturday morning after its growth and lack of containment forced ...

Wildfires have forced evacuations at two U.S. national parks in the West as summer monsoon storms increase lightning in the ...