You can search a location by its coordinates on Windy. You just need to use the right format in the search field as explained here:
Thank you :)
Also just to note, Windy does not create any forecast data but instead only visualises forecast and actual data received from various third party providers.
All data, including pollution, satellite images, etc is received from third party providers.
Also note that you can see both Forecast and Actual (almost real time) data, so it is also necessary to always understand what you are viewing.
You can see information about the layer you are looking at as follows: