Weather module Joomla Open Weather for Joomla 3. Display the data OpenWeatherMap site. ID of the City on the OpenWeatherMap.org website by entering the city in the search box and then clicking on the link found. The link will be of the form http://openweathermap.org/city/524901, the last digits, this is the city code The work requires the city ID and API key (APPID), which you can get by registe...