A method for controlling an electronic device is disclosed. The present control method comprises the steps of: receiving air state measurement values displayed on multiple external electronic devices from the external electronic devices; on the basis of the received measurement values, calculating a change rate of a measurement value of each of the multiple external electronic devices; identifying external electronic devices, the calculated change rates of which show differences belonging to a pre-configured range, among the multiple external electronic devices; correcting a measurement value received from at least one external electronic device among the identified external electronic devices such that measurement values received from the identified external electronic devices become equal to each other; and transmitting information related to the corrected measurement value to the at least one external electronic device.