When traveling in Iceland, the weather can be your worst enemy. It’s totally unpredictable and changes many times a day. Therefore, you need to be armed with an app to know what’s coming. The Icelandic Met Office offers and app, recently updated, which runs on the same models as the web forecasts, providing hourly forecasts for the next 48 hours.
The app can also detect you GPS location, provided your GPS is on, or you can choose a favorite weather station. Notifications can be enabled. Alerts issued by the Met Office are automatic during the day.
For detailed information, visit vedur.is.
You will also be well served by an emergency app, 112 Iceland, intended to ensure your safety while traveling.