The Dragon Bravo Fire has destroyed dozens of structures and a water treatment facility, and the White Sage Fire, located in Kaibab National Forest, has forced hundreds to evacuate.

Nearly 5 million people visited the Grand Canyon last year, from day trippers and campers to people sleeping overnight in historic lodges and cabins. A wildfire has torn through a historic lodge and ended the season for the canyon's North Rim,

Unhealthy air has invaded Minnesota, Wisconsin and North Dakota early this week as a new round of wildfire smoke from Canada has wafted into the region, choking out areas as far south as Chicago and Detroit.