OpenWeatherMap is an online service, owned by OpenWeather Ltd, that provides global weather data via API, including current weather data, forecasts, nowcasts, and historical weather data. The company provides a minute-by-minute hyperlocal precipitation forecast. The convolutional machine learning model uses meteorological broadcast services and data from airport weather stations, on-ground radar stations, weather satellites, remote sensing satellites, METAR, and automated weather stations.
The company has more than 2 million customers, ranging from independent developers to Fortune 500 companies.
The APIs provided by OpenWeatherMap have resulted in repositories on GitHub. The APIs support multiple languages, units of measurement, and industry standard data formats like JSON and XML.