You have to enable the Capabilities & App Services for your App ID in developer portal then wait for 30 minutes to get your app activated in Apple servers. Till then you will get 401 error.
Detailed steps given in the blog post
https://betterprogramming.pub/wwdc22-get-started-with-weatherkit-202794853c01
Thank you Rob Sturgeon
Thilagam
Users receive reputation points by contributing quality content to the forums.
Posts include post and replies published on the forums.
Post authors can mark replies as Accepted to indicate successful solutions.
Apple Developer Forums admins can mark replies as Apple Recommended to indicate an approved solution
Last seen
5 months ago
User for
9 years