I got a new watch, how do I get an API Key? Jacob Klain August 24, 2021 10:52 Updated Congratulations on your new purchase. To get your weather Application active you will need an API Key. To obtain one, please follow this link. It is recommended that you use a Chrome Browser. Related articles Can I get a V3 API key to use with my external app or watch? 😞 How to Sign up to our platform? I got my API key, now what? How to Invite a colleague to the Tomorrow.io Platform What is a "data layer"? Comments 0 comments Please sign in to leave a comment.