The American Fire is almost fully contained after burning more than 26,000 acres of the Tahoe National Forest, firefighters said Thursday morning.
Complete containment is expected at midnight.
The fire has prompted air quality alerts and smoke advisories in the Sierra.
The National Forest Service says the American Fire is burning in an area with no recorded fire history. Firefighters had trouble with the steep and difficult terrain during the early days of the fire.
Mosquito Ridge Road, closed by the fire, is expected to reopen Friday morning. Other areas will main closed for now. For the latest information from the National Forest Service, click here.