OK, yet another version (0.1.3) is available for test.
Added a diagnostic log to the App - Settings screen. I don’t recommend keeping this on for too long as it will eat up Homey’s memory. It does however give some details of what is being received to help diagnose problems. If you copy the data you should hide the API key before posting it anywhere.
Fixed the Feels Like parameter and added Heat Index. WU sends both Wind Chill and Heat Index values but it then says that Feels Like is equal to Wind Chill if the temperature is 16.1C or below and it is equal to Heat Index when the temperature is 21 or over and it is equal to temperature when the temperature is between 16.1C and 21C. So the Feels like now uses those rules.
Added better validation of Station ID and API Key when adding devices or changing the settings.
Changed Rain units to mm/hr.
Hope you don’t mind the frequent updates at the moment.