The lightning-sparked South Rim fire in Black Canyon of the Gunnison National Park has burned 3,556 acres with no containment and mandatory evacuations remain in place.

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

Two wildfires are burning at or near the North Rim, known as the White Sage Fire and the Bravo Dragon fire. The latter is the ...

Two wildfires burning around 30 miles apart near the Grand Canyon grew to over 45,000 acres on July 13, according to state ...

Multiple trails were evacuated at a Grand Canyon National Park Saturday after gas was leaked from a facility following a fire ...

A wildfire burning in Grand Canyon National Park triggered a chlorine gas leak Friday afternoon after flames reached a water ...

A Grand Canyon water treatment facility located at the North Rim caught fire on Saturday, causing chlorine gas to be released ...

A massive wildfire near Arizona 's Grand Canyon National Park erupted overnight, growing more than 20 times in the past 24 ...

Hurricane Valley firefighters have been deployed to the White Sage Fire, which is exhibiting “extreme fire behavior” as it ...

Most of Minnesota and parts of Montana, North Dakota and Wisconsin were ranked “unhealthy” for air quality on a U.S.

Wildfires have forced evacuations at two national parks in the U.S. West. Black Canyon of the Gunnison National Park in Colorado closed Thursday after lightning sparked fires on both rims.

Parts of Grand Canyon National Park, a popular natural wonder in the western United States, remained closed due to two ...