OpenWeatherMap is a web-based service that provides weather data for various locations around the world. It offers current weather conditions, forecasts, and historical data, making it useful for individuals and businesses alike. Users can access this information through a simple API, which allows developers to integrate weather data into their applications. The platform covers a wide range of weather parameters, including temperature, humidity, wind speed, and precipitation. OpenWeatherMap also offers specialized services, such as air quality data and weather alerts, helping users stay informed about changing weather conditions in their area.