Abstract: A heads-up digital display within a firefighting or welding helmet that indicates the temperature of the observed region is disclosed. Data is provided by a thermal imaging camera mounted on or through the helmet's exterior surface. Readings of the temperature across the field of vision may be localized and calibrated to a target point such as crosshairs, printed on the face shield, or may be generalized, for example taking an average temperature or maximum temperature from across the field of vision. The temperature reading would be displayed digitally on a temperature display mounted within the helmet.