During the last three years, Meteomatics built the concept for the Meteodrones together with the MeteoSchweiz and the Federal Office for Civil Aviation. In July 2014 the first test flights up to an altitude of 1.5km could be made. During these over 100 test flights the temperature, moisture, air pressure, wind speed and wind direction were recorded as vertical profiles. In this talk Martin Fengler, CEO of Meteomatics, will present the project and results of the test flights.