Weather information delivery system and method

A weather information delivery system and a method of the system, in which real time weather information having high accuracy can be obtained by using many samples from mobile communication terminals, are provided. Mobile communication terminals, which scatter in wide areas and are connected to the Internet, output weather condition information of spots where the mobile communication terminals are positioned as a packet mode, by detecting the weather condition information by using a built-in sensor or by pushing one of designated keys on each of the mobile communication terminals. A switching exchange makes weather information basic data as packets by receiving the weather condition information transmitted from the mobile communication terminals and also receiving the position information of the mobile communication terminals from base stations to which the mobile communication terminals are connected, and adding the time information at the time when the weather condition information was received, and transmits the packets to a channel. A weather information server makes weather information of specified areas by collecting the weather information basic data transmitted from the switching exchange through the Internet, and by editing and processing the received weather information basic data. An information delivery server receives the weather information of specified areas transmitted from the weather information server and stores it in the information delivery server, and outputs the weather information of some area corresponding to request from users.