Air quality concerns shut down the Port of Los Angeles and half of the Port of Long Beach today as firefighters continued to fight a wharf fire that ignited on Monday night.

Port of Los Angeles spokesman Phillip Sanfield said shortly before 3 p.m. that some terminals might reopen after 6 p.m. All eight of the port’s terminals are closed for now.

“This fire is more than 90 percent contained. The air quality is improving. That’s the main determining factor,” Sanfield said.

At the Port of Long Beach, officials shut down three of the facility’s six shipping terminals because of smoky conditions. As in Los Angeles, port operators announced they are considering the possibility of reopening closed terminals in time for the 6 p.m. night shift.