ultraviolet index in Eureka Slough Bridge (1.3 mi.) | ultraviolet index in Samoa (1.5 mi.) | ultraviolet index in Bucksport (2.5 mi.) | ultraviolet index in North Spit (Humboldt Bay) (4 mi.) | ultraviolet index in Elk River Railroad Bridge (4 mi.) | ultraviolet index in Arcata Wharf (4 mi.) | ultraviolet index in Mad River Slough (Arcata Bay) (4 mi.) | ultraviolet index in Fields Landing (6 mi.) | ultraviolet index in Hookton Slough (9 mi.) | ultraviolet index in Trinidad Harbor (17 mi.) | ultraviolet index in Shelter Cove (55 mi.)