I created a custom integration to get data from IRM KMI app (meteo.be) in Home Assistant. You can have a look here: Belgium weather provider: IRM / KMI (meteo.be)
As of version 0.2.6, the integration provides the following:
- A weather entity with current weather conditions
- Weather forecasts (hourly, daily and twice-daily) using the service
weather.get_forecasts - A camera entity for rain radar and short-term rain previsions
- A binary sensor for weather warnings
- Sensors for pollen levels