The location across from the Air Museum is on the “wrong” side of the Palm Springs Airport. It’s just a highway and you’re going to need a car to be able to… go somewhere to eat lunch. The hotels and restaurant are in the other side of town. So you’ll need a car or a taxi to get around. Despite its small size Palm Springs is not a very walkable city outside of the main drag.
You can always fly into Ontario and drive to PS. It’s not a long drive (1-1:30 hours?) and you’ll get to pass Banning on the way 