It’s 7 a.m. and 54°, headed to 59°. It won’t be too warm, but nice enough for a long Sunday walk. Get the details here.

Do you ever look at those stains on BART seats and wonder if it’s safe to sit? You’re not alone. The Bold Italic lends a hand with this infographic on seat stains.

Looking for a way to stay warm? Check out some fun events taking place at Dolores Park today, starting with the usual free Sunday yoga at 11 a.m. If that’s too early, then head to the park around 3 p.m. and get your groove on with the dancing robot.