The largest Arizona wildfires have burned half a million acres. The Drago Bravo Fire at the Grand Canyon North Rim just made the top 10 list.

A campfire ban starts Aug. 1 as the Bear Gulch Fire grows past 3,000 acres, closing Lake Cushman, trails and Staircase campground.

Natural Resources Minister Ian Bushie, left, has acknowledged the need for a more comprehensive wildfire response plan.

Every air quality monitor in Minnesota is reporting red or unhealthy conditions for everyone, an official said.

CEDAR RAPIDS, Iowa (KCRG) - Cool and pleasant air moves in, but there is a caveat.

More days of wildfire smoke may mean more trouble for your pets, as veterinarians say they're seeing an increase in respiratory illness in dogs, cats and even birds.

ROCHESTER, Minn. (KTTC) – Canadian wildfires will continue to impact the upper Midwest through the weekend. Minnesota Air Quality: Air quality alerts remain in effect until 5 p.m. on Saturday. Iowa ...

Utah Gov. Spencer Cox declared a state of emergency Thursday afternoon as wildfires throughout the state rage, and skies from Salt Lake City to St. George fill with smoke.

Smoke from Canadian wildfires settled over Chicago Thursday, with air quality reaching “unhealthy” levels for everyone. Air quality was far worse in parts of Canada closer to the fires.

The National Weather Service reported an air quality alert at 4:12 p.m. EDT on Thursday in effect until Saturday at 4:15 a.m. EDT for Cass, St. Joseph, Branch, Hillsdale and Berrien counties.

SALT LAKE CITY (AP) — Two wildfires burning in the western United States — including one that has become a “megafire” on the ...

Fifteen teams have advanced to the semifinal round of XPRIZE’s $5 million Autonomous Wildfire Response Track, moving one step closer to proving that autonomous systems can detect and extinguish ...