I don't find any entry for Greenland in the list of downloadable maps. Did I just miss it, or is there none? Openstreetmaps covers Greenland AFAIK.
Right now, the AROME model on Windy is data from "Reference time 2019-01-27T12:00:00Z" and goes to 24h after reference time (that is, the latest time one can show is 2019-01-28 12:00Z).
However, https://www.meteoblue.com/en/weather/forecast/multimodel/teuge_netherlands_2746387 shows "AROME2" forecast up to 36h after reference time (that is, until 2019-01-29 00:00Z).
Outwardly, it looks to me like these use the same model, the 2km resolution AROME, so why only 24h on Windy?
Vote 2: AROME
Would allow (in Western Europe) forecast that takes into account quite local conditions (valleys, etc).