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The Swiss federal office of meteorology and climatology, MeteoSwiss, mandated the company Meteomatics for a 6-months campaign to measure vertical profiles of temperature, humidity and wind at Payerne, Switzerland. The aim is to measure 8 profiles per night, up to 1.5km above the ground. The measurements are performed with a hexa-copter Meteodrone MM-670 upon remote supervision. The drone was flying automatically beyond the line of sight and was recharged autonomously using the Meteobase. The presentation will focus on the availability and the quality of the measurements. The measurement will be compared to co-localized radio-sounding and remote-sensing measurements like a wind lidar Windcube 200S, a radar wind profiler PCL1300, the Raman lidar RALMO and a microwave radiometer HATPRO G5. At the end of the campaign, more than 1000 flights should be available, providing a unique data set to compare the performances of these systems. On the first month of the campaign, December 2021, 188 flights were performed for an availability of more than 90%. 85% of these flights reached the nominal altitude of 1.5km, the other flights were stopped due to the weather conditions. The measurements were transmitted in real time and compared to simultaneous radio-soundings. Using the WMO/OSCAR requirements and a preliminary analysis, the temperature measurements can be classified as a “breakthrough” with a temperature uncertainty of 0.82K. The wind data was close to the breakthrough limit (2.85m/s). To obtain useful humidity measurements we had to exclude three nights where the drone was not able to measure correctly a dry layer above the stratus. After this filtering, we obtained an uncertainty of 8.9% on the specific humidity, below the “threshold” value of 10%. The statistics over the entire period of 6 months will allow to assess the maturity of such systems and inform how they complement the existing observing system. To our knowledge, it is the first time that such a long-term evaluation is performed, opening the opportunities for automatic drone measurements in the boundary layer.