@chis Hi, please turn this on and it will remember your last setup: b6979445-28df-496f-bd9a-8906f39dac17-Snímek obrazovky 2023-12-28 v 12.37.28.png Snímek obrazovky 2023-12-28 v 12.37.28
Found the answer: Under More Layers, Display Isolines, and select Geopot. height.
Now the equivalent altitude will be displayed as isolines while keeping the pressure constant.
So yet again, Windy already had the facility I wanted. It's just too great!