IBM Releases Insights for Weather Service – REST API for Weather Company Data
ng.bluemix.net
ng.bluemix.net
From the documentation: "The pricing model is based on daily calls to the Insights for Weather APIs that are charged to the client monthly. You can test the weather data in your applications for any geographic area, forecast type, or time series observations with only a restriction on number of calls. The Free, Base, and Premium plans can be purchased without a contract. These plans allow your app to make 500, 5,000, or 50,000 API calls per day respectively."