A culture apparatus comprising: a housing including a culture chamber inside, culture being cultured in the culture chamber; a door configured to seal the culture chamber; an ultraviolet lamp configured to generate an ultraviolet ray for disinfecting air in the culture chamber; a lighting device configured to allow the ultraviolet lamp to be on for a predetermined time period, when the air in the culture chamber is disinfected; a detecting device configured to detect deterioration of disinfection capability of the ultraviolet lamp; and a controller configured to correct the predetermined time period, during which the ultraviolet lamp is on, so as to be longer according to the deterioration of the disinfection capability of the ultraviolet lamp detected by the detecting device.