WeatherData Source Information
WeatherData is based on a wide range of sources, with enhancement at Wolfram Research by both human and algorithmic processing. WeatherData is continually maintained with the latest available information, with automatic updating when WeatherData is used inside Mathematica.
Among current principal sources for WeatherData are:
Citizen Weather Observer Program. "Citizen Weather Observer Program (CWOP)." 2008. »
Gladstone, Phillip."Locations of th Weather Stations of the World." http://weather.gladstonefamily.net/cgi-bin/location.pl/pjsg_all_location.csv?csv=1
National Oceanic and Atmospheric Administration. "National Weather Service." 2009. »
United States National Climatic Data Center. "Global Surface Summary of Day." 2008. »
United States National Climatic Data Center. "Integrated Surface Database." 2008. »
To report an error or suggest an addition to WeatherData, contact the Wolfram Research WeatherData team.