An electronic device according to various embodiments of the present invention comprises: a housing; a user interface; a first gas sensor disposed to sense gas outside the housing; a second gas sensor disposed to sense gas outside the housing and spaced apart from the first gas sensor, the second gas sensor being of the same type as the first gas sensor; a processor electrically connected to the use interface, the first gas sensor, and the second gas sensor; and a memory electrically connected to the processor, wherein the memory may store instructions, that when executed, cause the processor to: monitor the gas outside the housing using the first gas sensor to acquire first data; monitor the gas outside the housing using the second gas sensor to acquire second data; compare the first data and the second data; and provide, via the user interface, information associated with at least one of the gas, the first gas sensor and the second gas sensor, at least in part, on the basis of the comparison result. Other embodiments are also possible.