Thank you for the quick reply. I have read the content of the page to which you sent me a link. I think I was misunderstood. The attached figure shows that the cloud cover (3-5 km high) is adequately reflected in the pictograms at the top of the graphic only in two cases. The case with question marks is not understandable to me.
Please also note: For every language, a different place name label can be displayed, so please choose your correct language and data display.
Further discussion of place name and language issues or disputes should be directed to the OpenStreetMap Forum here: https://forum.openstreetmap.org/index.php > scroll down & select > users: (the relevant country for your dispute and/or question)
In the case of a political dispute please leave such topics out of the Windy forum and instead focus on the discussion of weather.