Quick picks based on mood
Big weekend energy: Fiesta Hermosa, Santa Anita Memorial Weekend Carnival, LA Fleet Week in San Pedro, or Family Fun Day in Pasadena.
Free or low-cost: Wellness & Waves, LA Fleet Week EXPO, Wander the Wilderness Bus, Children's Film Festival, Andell Family Sundays, Boone Children's Gallery, Art Carnival at Baldwin Park Library, and Kids Learn to Ride.
Beat the heat / splash: Hansen Dam Aquatic Center (one of the largest pools in the U.S., Memorial Day reopening).
Toddler-friendly: Wellness & Waves, Nature Garden storytime, Boone Children's Gallery, Art Carnival (if they like short craft rotations), Princess Play Date (if your child loves characters), Choo Choo Revue (if they can sit).
Older kid energy: Santa Anita carnival, Dinosaur Encounters, TeensTeach, or a full NHM day with a 3D film.
Indoor backup: NHM, LACMA, Pretend City, Bob Baker Marionette Theater, or The Stray Theater film block.
Worth a drive: LA Fleet Week in San Pedro or San Bernardino County Fair if your crew handles longer drives and wants a full fair-harbor day.