YOSEMITE NATIONAL PARK, Calif. - Officials say smoke from the Ferguson Fire near Yosemite National Park is affecting air quality in the region.
A time lapse video shows smoke enveloping the well-known Half Dome rock formation in the park.
The fire is still just five percent contained at 12,525 acres.
Air pollution control officials are urging people with existing respiratory conditions, young children and elderly people to stay in air-conditioned buildings.
At Yosemite, visitors can still use all trails, campgrounds, lodges and restaurants, but park officials are asking tourists with respiratory issues to be cautious.