Just in time for the hot weather, I called the Department of Parks and Recreation and they confirmed that city pools open at noon tomorrow. The closest one to our area is the Banneker pool at Georgia and Euclid, and it’s pretty fun.
Here’s the DPR pools website.
UPDATE: The pools are open to noon to 6 pm Saturday, Sunday, and Monday and are free if you can prove DC residence (driver’s license, voter card, mail addressed to you, etc.) They’re closed on weekdays until June 21.