The one hour difference between the Meteogram and the wind arrows is known and must be fixed.
Concerning the difference with the Squid app, which weather model do you use?
Squid offers GFS data as a free version, and the ECMWF only as a paid version.
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.