To provide a window glass having a temperature sensor, capable of reducing irregularities on a glass surface, having high responsibility of temperature measurement, and achieving accurate temperature measurement.

A window glass having a temperature sensor comprises a plate glass body 2 used for a window, and a film-shaped temperature sensor 4 which is attached to a glass surface of the plate glass body 2 and has a heat-sensitive part which is spread out on the attached area and has electric resistance which changes responding to temperature. The film-shaped temperature sensor 4 comprises an insulating film 5, a film-shaped heat-sensitive part extending on the insulating film 5, and a couple of lead wires 6 connected to the heat-sensitive part.