You can find most frequently asked questions answered here.
A: Our weather data is currently available only on commercial terms as part of our separate paid plan. In case you are willing to subscribe please see our plans available. Should you need customization please open a new ticket and provide us with the following information:
Basing on this information we would be more than happy to help you choose the plan, terms and conditions that best fit your case.
A: Starting from 9 October 2015 our API requires a valid APPID for access. Note that this does not mean that our API is subscription-only now - please take a minute to register a free account to receive a key.
We are sorry for inconvenience but this is a necessary measure that will help us deliver our services to you faster and more reliably.
For FOSS developers: we welcome free and open source software and are willing to help you. If you want to use OWM data in your free software application please register an API key and file a ticket describing your application and API key registered. OWM will review your request lift access limits for your key if used in open source application.