ultraviolet index in Big Torch Key (Harbor Channel) (0.8 mi.) | ultraviolet index in Howe Key (Northwest End) (1.6 mi.) | ultraviolet index in Raccoon Key (East Side) (2.1 mi.) | ultraviolet index in Knockemdown Key (North End) (2.8 mi.) | ultraviolet index in Big Torch Key (Niles Channel) (3 mi.) | ultraviolet index in Howe Key (South End, Harbor Channel) (3 mi.) | ultraviolet index in Big Pine Key (North End) (3 mi.) | ultraviolet index in Content Keys (Content Passage) (4 mi.) | ultraviolet index in Big Spanish Key (4 mi.) | ultraviolet index in Annette Key (North End, Big Spanish Channel) (4 mi.) | ultraviolet index in Big Pine Key Ne (4 mi.) | ultraviolet index in Cudjoe Key (North End, Kemp Channel) (5 mi.) | ultraviolet index in Little Spanish Key (Spanish Banks) (5 mi.) | ultraviolet index in Mayo Key (Big Spanish Channel) (6 mi.) | ultraviolet index in Big Pine Key (West Side, Pine Channel) (6 mi.) | ultraviolet index in Crawl Key (Big Spanish Channel) (6 mi.) | ultraviolet index in Kemp Channel Viaduct (6 mi.) | ultraviolet index in Summerland Key (Niles Channel Bridge) (6 mi.) | ultraviolet index in Ramrod Key (Niles Channel Bridge) (6 mi.) | ultraviolet index in Porpoise Key (Big Spanish Channel) (6 mi.)