ultraviolett index i Annisquam (3 mi.) | ultraviolett index i Gloucester Harbor (4 mi.) | ultraviolett index i Essex (8 mi.) | ultraviolett index i Plum Island South (10 mi.) | ultraviolett index i Plum Island (Merrimack River Entrance) (15 mi.) | ultraviolett index i Salem (16 mi.) | ultraviolett index i Newburyport (17 mi.) | ultraviolett index i Salisbury Point (19 mi.) | ultraviolett index i Hampton Harbor (19 mi.) | ultraviolett index i Lynn (22 mi.) | ultraviolett index i Merrimacport (22 mi.) | ultraviolett index i Gosport Harbor (Isles Of Shoals) (22 mi.) | ultraviolett index i Riverside (Haverhill) (24 mi.) | ultraviolett index i Boston Light (27 mi.) | ultraviolett index i Deer Island (South End) (28 mi.) | ultraviolett index i Jaffrey Point (28 mi.) | ultraviolett index i Chelsea (28 mi.) | ultraviolett index i Gerrish Island (29 mi.) | ultraviolett index i Fort Point (29 mi.) | ultraviolett index i Hull (29 mi.)