Hello. I have been using the Windy App for months now and think it is a fantastic source of detailed weather information.
One feature I would like to see added is a Surface Analysis layer. I believe the graphical depiction of weather features such as warm fronts, cold fronts, and troughs etc. would be useful for your users. By way of an example, below is a link to Nav Canada's Surface Analysis provided by environment Canada:
Thanks again for a great app!