Not that it has likely missed your notice but it's going to be a hopping weekend here in Seattle.
First up - good weather with Sunday being the best day at 73 degrees.
Second, big celebration starting at the Seattle Center in honor of the 50th anniversary of the World's Fair. The kick-off event starts Saturday at 10:30 am with opening ceremonies in the Mural Amphitheater. According to the Times, those ceremonies conclude at 4:30 p.m. with
"The Chair Spectacle": 200 community members in procession to the
International Fountain with movement performed on and around chairs,
accompanied by music related to the 1962 World's Fair.
Could be great.
Festivities throughout Saturday include a skateboarding party,
zip-line rides, a beer garden with trivia games, and a variety of food
trucks and carts.
Displays include "Celebrating Century 21" featuring "The Future
Remembered" artifacts from the 1962 World's Fair, and a traveling
history exhibit, "Centuries of Progress, America's World's Fairs,
1853-1982," open 10 a.m.-5 p.m. daily, Saturday through Oct. 21.
Next, HuskyFest at UW and it's turning 150 (so there, Space Needle). Lots of free events - free Burke Museum and Henry Art Gallery, a scavenger hunt, face painting, solar car races on Red Square, pies/poems and lots more. (Note: if you have never been in the library, Suzzallo which in right on Red Square, go in and take a gander - the reading room is straight out of Hogwarts.)
Last (but not Least) - Sunday is Earth Day. There are events through the Puget Sound area. Go hug a tree and pick up some trash at your nearest park.