Perception of the relationship between a comfort level and environmental data is facilitated, and appropriate management of air-conditioning equipment is enabled. A comfort level display apparatus (100) has a preference storage unit (101) to store a preference of a user regarding an air-conditioned environment, an attribute storage unit (102) to store an attribute of the user, an environmental data value acquisition unit (103) to acquire an environmental data value representing a condition in an air-conditioned space, a comfort level value generation unit (104) to generate a comfort level value indicating comfort of the user in the air-conditioned space, based on the preference of the user stored the preference storage unit, the attribute of the user stored in the attribute storage unit, and the environmental data value of the air-conditioned space acquired by the environmental data value acquisition unit, a display data generation unit (105) to generate display data by synthesizing the comfort level value of the user generated by the comfort level value generation unit and the environmental data value of the air-conditioned space acquired by the environmental data value acquisition unit, and a display unit (106) to display the display data.