ultraviolet index in Onion Key (Lostmans River) (6 mi.) | ultraviolet index in Chatham River Entrance (10 mi.) | ultraviolet index in Shark River Entrance (15 mi.) | ultraviolet index in Whitewater Bay (20 mi.) | ultraviolet index in Chokoloskee (20 mi.) | ultraviolet index in Indian Key (23 mi.) | ultraviolet index in Everglades City (Barron River) (24 mi.) | ultraviolet index in Round Key (28 mi.) | ultraviolet index in Cape Sable (East Cape) (31 mi.) | ultraviolet index in Pumpkin Bay (32 mi.)