A scheme for providing environmental information to users is disclosed. In this scheme, environmental information is measured automatically by each of a plurality of environment sensors arranged at a plurality of regions, and the environmental information measured by each environment sensor is collected automatically to a base device, and stored at the base device. Then, the environmental information is processed at the base device according to a user information of an individual user, and processed environmental information is provided from the base device to the individual user through a network connecting the users and the base device.