Two issues with the watch complication. Which I think is a great idea!
When it looked like it was working the wind values were different from what showed up in the windy iOS app.
Now all of the wind speeds are zero and the wind os all from the north. The watch complication doesn’t work at all. I tried uninstalling and reinstalling it on the watch and it didn’t help.
The metars information is working fine, which says that the watch to phone communication is probably working, as I doubt that windy complication contacts the internet directly, though I have watch apps that do.
Anyway, it would be great if it worked!