お天気JAPAN is a weather information application that features instant notifications in case of increased danger of heavy rain disasters at registered locations. The app is certified by the Japan Meteorological Agency and is one of the five companies chosen to notify users of the "distribution of danger" during heavy rain. The app provides high-precision weather forecasts by the Japan Meteorological Agency licensed forecast business operator, which are reliable and accurate.

The app is not only useful for daily weather checks but can also be helpful in disaster prevention and mitigation. It provides free push notifications for various weather-related events, including rain, thunder, tornadoes, earthquakes, typhoons, and heatstroke danger levels. Additionally, the app offers a "Point Mission" feature where users can earn Rakuten points by completing simple missions within the app.

お天気JAPAN provides valuable features such as high-precision weather forecasts, instant notifications, and a Point Mission system. The app is certified by the Japan Meteorological Agency, which ensures that the weather forecasts are reliable and accurate. It is a must-have app for anyone who wants to stay up-to-date with the latest weather information and be prepared for any weather-related events.