Hello, we have the same problem that cujo30227 with WeatherKit REST API authentication. We are trying auth with the api but the response is similar (403 - Access denied). We have created the weather kit key and activate the weather kit service in our Apple developer account. Actually, **we work with darksky but it will be closed by Apple on March 2023: https://blog.darksky.net. ** We need to know when the WeatherKit REST API will be ready to do the migration please. Regards.