WeatherCoin is a Web3-based RWD (Real World Data) token that transparently manages weather (meteorological and atmospheric) data through blockchain and immediately rewards climate action such as data production, environmental improvement, and energy conservation. Its core vision is to share the value of weather data and create a virtuous cycle ecosystem for managing climate risk by establishing a “Climate Action Economy.” WeatherCoin combines the weather big data collection and analysis capabilities of KWeather, South Korea’s largest private weather company, with a blockchain settlement and verification system to build a new weather economy platform centered on data and trust. Furthermore, it will lead the tokenization of weather data based on real-world data within the XRP ecosystem and establish a global standard model for “Weather-to-Finance” through weather parametric financial products.