The Los Angeles County Fair in 2025 runs for 16 days, from May 2 to May 26. It is closed on Mondays, Tuesdays, and Wednesdays except for Memorial Day, meaning it operates primarily Thursday through Sunday plus Memorial Day during this period

. On opening day, May 2, the fair is open from 5 p.m. to 11 p.m., and on regular days (Thursday through Sunday and Memorial Day), it operates from 11 a.m. to 11 p.m.