Hi from Brixham in South Devon, England. I'm a big fan of Windy and use it regularly to decide where & when to go flying my paraglider or hang glider. The Sounding prediction for a specific location is extremely useful - and the UI on the phone app is a huge improvement, with the scrollable timeline. I use the Compare facility quite a lot to get a feel for the reliability of a forecast - if they differ widely then pick the one you like, but it may not be right!
One major concern I have is that the temperature forecast from the UK Met Office as reported by Windy for my location is significantly different to the forecast from the Met Office App, with the Met Office predicting frosty nights correctly, and Windy consistently forecasting higher temperatures incorrectly. This leads me to question whether similar errors might exist in other forecasts 🤔