WetterOnline weather service

WetterOnline is a leading German digital weather information provider headquartered in Bonn. Founded in 1996 by Dr. Joachim Klaßen, the company has grown from a pioneer in online meteorological data to one of the largest global providers in the industry. It operates the well-known portal WetterOnline.de and its companion mobile applications, which are available in dozens of languages across more than 40 countries.

Technically, the 'manufacturing' of its products consists of high-end data processing and meteorological modeling conducted primarily at its German headquarters in Bonn and its facility in Bornheim. The brand remains privately held by its founding organization, WetterOnline Meteorologische Dienstleistungen GmbH, maintaining its independence and technological focus within the European market. Over the years, it has expanded its reach through international subsidiaries such as Weather & Radar Ltd in the UK and Data Sales Services in the USA to better serve a global audience.