I have no clue, Joris, it’s from 3 years ago The OWM app topic also talks about the “current time” weatherforecast, probably the forecast was 15 minutes ahead instead of ‘now’ back in the day?
But it sure can forecast future weather. Would be very odd when it couldn’t.
You probably have to add OWM devices for every forecast timeframe you want.
Just read the app topic’s introduction