A method of providing meteorological data for aeronautical use. The method includes collecting data from a plurality of data sources, processing the data to determine current meteorological conditions of a current location of an aircraft in an airspace, and providing the current meteorological conditions to the aircraft and other users as appropriate, such as airline operations centers, air navigation service providers, and national weather service providers. Based on current aircraft behavior data and guidance systems design, beneficial wind and meteorological data can be established for a given flight and its cleared route and descent path.