ultraviolet index in Wappoo Creek (1.5 mi.) | ultraviolet index in Charleston (1.8 mi.) | ultraviolet index in James Island Creek (1 mi. above ent.) (2.7 mi.) | ultraviolet index in Elliott Cut Entrance (3.0 mi.) | ultraviolet index in Duck Island (3 mi.) | ultraviolet index in Shipyard Creek (0.8 mile above entrance) (3 mi.) | ultraviolet index in Cosgrove Bridge (4 mi.) | ultraviolet index in Fort Johnson (4 mi.) | ultraviolet index in Hobcaw Point (4 mi.) | ultraviolet index in Shem Creek (4 mi.) | ultraviolet index in Fort Sumter (5 mi.) | ultraviolet index in Ashley River (I-526 Bridge) (5 mi.) | ultraviolet index in Clouter Creek (South Entrance) (5 mi.) | ultraviolet index in The Cove (Fort Moultrie) (6 mi.) | ultraviolet index in Sandblasters (Pennys Creek) (6 mi.) | ultraviolet index in Pennys Creek (West Entrance) (7 mi.) | ultraviolet index in Ben Sawyer Bridge (7 mi.) | ultraviolet index in Drayton (Bee's Ferry) (7 mi.) | ultraviolet index in Sullivans Island (outer Coast) (7 mi.) | ultraviolet index in Folly Creek (Hwy. 171 Bridge) (7 mi.)