The San Francisco Recreation and Parks Department said Thursday it has extended the closure of Camp Mather, a campground for families near the park, due to poor air quality from nearby fires.
The camp was scheduled to reopen Sunday had the conditions improve, but the closure has been extended to Aug. 12.
Campers who were scheduled to arrive Sunday Aug. 5 will receive a full refund and a spot at the camp next summer, officials said.
Parks spokeswoman Sarah Madland said about 450 visitors to Camp Mather and 70 staff were affected, including 350 visitors asked to leave Tuesday and 100 who had canceled last week due to the air quality.
The Ferguson Fire has burned 68,610 acres as of Thursday afternoon and it is at 39 percent contained, according to U.S. Forest Service.