GET /collections/{collectionId}/items/{itemId}

URL: https://gateway.api-management.metoffice.cloud/sadis-wafs-gridded-data/…{collectionId}/items/{itemId}

Querying this end point with the 'itemId' within a specified collection {collectionId} returns forecast data and associated metadata for this parameter e.g. Temperature, Geopotential Height, Relative Humidity, etc.

The success response is a 302 redirect, which directs you to the GRIB2 file payload of the requested item. The item payload contains the forecast data for all pressure levels for the relevant forecast timesteps and parameter(s), as specified by the 'itemId'.

The 'itemId' naming standard is described in section 4.1 of the SADIS API - User Guide.