[ ] An easy way is a form with an input field, where I can type in my city. Then fetch an API (e.g. google geo api) to get longitude and lattitude what you will need for a second fetch to the radiation-API. I think this makes more sense because someone that lives in Berlin may be interested what the radiation in Dortmund is.
Value proposition
As a user I want to input my location manually in order to get the radiation of my required location
Description
Acceptance criteria
Tasks