Ways to play, if you can brave the fog.
San Francisco Symphony in Dolores Park
Bring a picnic and a blanket and listen to Tchaikovsky, Dvorak, and Haydn numbers at this free performance.
When: Sun., 7/20, 2-5pm; All ages; Free.
Where: Dolores Park, 18th Street (at Dolores Street), 415-552-8000, sfsymphony.org.
Thumbelina
See a show about the old-school predecessor to Polly Pockets as the New Conservatory Theatre Center Teen Summer Stock company performs a play based on the Hans Christian Anderson story.
When: Thu.-Sat., 7/17-19; 11am; Age 3+; $10-15.
Where: New Conservatory Theatre Center, 25 Van Ness Avenue (at Oak Street), 415-861-8972; nctcsf.org.
Sun, Wind, & Water Day
Explore the elements with hands-on events at this free annual festival. Make solar s’mores, create your own paddleboat, or join the water balloon-tossing contest.
When: Sat., 7/19, 10am-2pm; All ages; Free.
Where: Randall Museum, 199 Museum Way (at Roosevelt), San Francisco, 415-554-9600, randallmuseum.org.
Run the Bases at AT&T Park
Kids aged 14 and under can linger after each San Francisco Giants home game to dash around the big league bases. Participants get a free See’s candy as they leave.
When: Sun., 7/20, game starts at 1:05pm, kids run the bases after the game is over; Age 3-14; Free with admission to game, $17-72.
Where: AT&T Park, 24 Willie Mays Plaza (King and Fourth Streets), 877-JR-GIANTS, sanfrancisco.giants.mlb.com.