Click on Purchase Key button when you're done. By default the FREE Wunderground Developer account will be selected: Developer Stratus (you can change to paid account later if you choose so) - After successfully logged in you have to complete a number of questions to get the FREE Wunderground API Key Your API key is not generated and you have to log in using the email and password chosen on 2b) step, or if you already have a Wunderground account use those credentials. Click on the generated link and your account will be created and verified Check your Inbox/Spam folder for email verification message from. Agree with the Wunderground Terms of Service On the sign-up page use a real email address, choose your password, confirm it by type it again and then choose your Wunderground handle (nickname). If you don't have an account click on the Sign Up for FREE button. If you already have a Wunderground account click the Sign In button from the top-right website menu and enter your account credentials (email address and password). Important: As of May 16, 2018, WUnderground Free API keys are no longer provided.

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Wunderground developer api key