SPIRE Forecast API


SPIRE FORECAST API is a simple to use API that offers access our state of the art weather forecast. Spire’s APIs are developer-friendly so you can plug and play, effortlessly adding new data and key insights into your systems. In addition to the complete documentation, we also offer outstanding support that helps you start ingesting data and building apps quickly.


Globally available

The forecasts are available anywhere in the planet in 1/8th-degree resolution (aprox. 12km).

See ahead

The forecasts are output hourly for 24 hours and every 6 hours for up to 7 days.

Fit your needs

Data is available in JSON or GRIB2 formats.

Spire's offer also include hindcast. For more details, keep reading or contact us.


Spire Forecast API is organized in Bundles, each one grouping weather variables that are interesting for a specific domain. This brings simplicity and flexibility to have the best offer tailored for your business.

  • Basic Bundle

    The most commonly used weather surface variables:

    • Air temperature at screen level
    • Relative humidity
    • Dewpoint temperature
    • The eastward component of the horizontal wind at 10 meters AGL
    • The northward component of the horizontal wind at 10 meters AGL
    • Air pressure adjusted to mean sea level
    • Accumulated precipitation at surface level
    • Instantaneous wind gust speed at 10m

  • Maritime Bundle

    The Maritime bundle provides the following oceanographic forecasts at sea level:

    • Sea Surface Temperature
    • Ocean Currents (eastward component)
    • Ocean Currents (northward component)
    • Significant Wave Height

  • Upper Air Bundle

    The Upper Air bundle provides forecasts at multiple Isobaric levels:

    • Geopotential height
    • Temperature
    • u-wind component
    • v-wind component
    • Relative humidity
    • Vertical velocity
    • Absolute vorticity
    • Cloud water mixing ratio
    • Cloud ice mixing ratio

  • Thunderstorm Bundle

    For thunderstorm conditions, the following information is available:

    • Convective Available Potential Energy at whole atmosphere
    • Convective Inhibition at whole atmosphere
    • Lifted Index
    • Storm-relative helicity
    • Storm motion (eastward component)
    • Storm motion (northward component)
    • 0-6 km shear vector (eastward component)
    • 0-6 km shear vector (northward component)

  • Aviation Bundle

    The aviation bundle brings forecast to flight levels:

    • Air temperature
    • Relative humidity
    • The eastward-component of the horizontal wind
    • The northward-component of the horizontal wind
    • The horizontal surface visibility
    • The height (above sea level) where the maximum wind speed is found
    • The eastward component of the maximum horizontal wind
    • The northward component of the maximum horizontal wind
    • Potential severity of clear-air turbulence associated with wind shear (not due to mountain waves or convection)
    • Potential for aircraft icing

  • Agricultural Bundle

    For agriculture or soil, the following surface level forecast is available:

    • Skin (surface) temperature
    • Dewpoint temperature
    • Specific humidity
    • Soil moisture (0-10 cm, 10-40 cm, 40-100 cm, 100-200 cm)
    • Soil temperature (0-10 cm, 10-40 cm, 40-100 cm, 100-200 cm)
    • Latent heat flux
    • Sensible heat flux
    • Incoming shortwave radiation from above
    • Incoming longwave radiation from above
    • Outgoing longwave radiation from the surface
    • Outgoing shortwave radiation from the surface
    • Outgoing longwave radiation from the top of the atmosphere

  • Renewable Energy Bundle

    A bundle dedicated to wind and solar power, with:

    • The eastward and northward components of wind at 80m
    • The eastward and northward components of wind at 100m
    • The eastward and northward components of wind at 120m
    • Incoming shortwave radiation
    • Air temperature

  • Custom

    Let us create a customized package that perfectly fit your needs.