You get 100% humidity basically any time you're near a large body of water that has been hot and then the air cooled. So usually on hot days like that along the

You get 100% humidity basically any time you're near a large body of water that has been hot and then the air cooled. So usually on hot days like that along the coast, as the sun goes down you'll notice lots of things just getting wet, that's due to the 100% humidity.