We increased the forecast depth of the ICON13 weather model from 5 to 7.5 days, which will allow you to get it for more than a week.
ICON13 is the third most popular global weather model after the European ECMWF and the American GFS models developed by the German national weather service or DWD (Deutscher Wetterdienst).
Learn about all the weather models used in the Windy.app on the dedicated page in the Support section of the site.
ICON13 weather model in the Windy.app for iOS