Are paladin auras visible? Would commoners see my aura as I walk down the street? I'd say no, but I don't know if we have a canonical answer
— Mike Mearls (@mikemearls) June 20, 2017
An aura is, by rule, only visible if the aura's description describes it as such. #DnD https://t.co/iS0l9Y8CaY
— Jeremy Crawford (@JeremyECrawford) June 20, 2017