NCEP Forecast API

The service provides aggregated 3-day weather forecasts for several surface measurements of meteorological conditions, including wind speed and direction, barometric pressure, temperature, relative humidity, and precipitation. It also provides forecasts of solar irradiance. Estimates are updated every 3 hours. The data come from the National Centers for Environmental Prediction, part of the U.S. National Oceanic and Atmospheric Administration (NOAA).

API methods support designation of a location by latitude, longitude, and elevation along with the types of weather observations desired. The API returns aggregated forecasts for the specific meterological measures at the requested location.