GNSS Weather is a preliminary project for examining the needs for usability services for satellite navigation within all central actors, e.g. transportation and bank sector or energy distribution. The GNSS weather service reports the quality of the satellite navigation systems GPS, Galileo, GLONASS and BeiDou. In addition to that, options for the most suitable platform for the service are examined. The technical content of the project will be described in a report, and a demo will be presented.