This weekend will be the peak viewing time for the Perseid Meteor Shower.
The Northern Virginia Astronomy Club will have a public viewing at Great Meadow in The Plains on August 14.
Going the other direction, an apparently good spot with little light pollution that’s still very accessible is Southern Park in Charles County. (Most parks are closed off after sundown).
I think I might take my chances at Riverside Park off the George Washington Memorial Parkway.