@Tomasz-Roos It is not Windy that does not take into account the real altitude, IT IS THE MODEL, as said above. In the mountains you have to use a high resolution model (if available). And even better look at METEOBLUE in the point forecast table, this model is very good in the mountains especially for the temperature. If you change the altitude with the Altitude slider, you set all the parameters "in free atmosphere", not near the ground, and you then get erroneous data. You are not a Premium user, so you can use the Observation vs forecast feature. It compares the data from weather stations and models. I take here the example of the Jungfraujoch weather station in Switzerland at 3500 m. METEOBLUE is the best for temperature and wind. [image: 1735414487018-4e19eeff-5c10-445e-825f-4b2e79fe52d3-resized.jpeg]