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NDFD temperature, max and min temperature, apparent temperature and relative humidity forecasts
Link to graphical web page: http://digital.weather.gov
Link to data download (grib2): http://www.nws.noaa.gov/ndfd/technical.htm
Link to metadata
Questions/Concerns about the service, please contact the IDP-GIS team.
This map is time-enabled, meaning that each individual layer contains time-varying data and can be utilized by clients capable of making map requests that include a time component.
This particular service can be queried with or without the use of a time component. If the time parameter is specified in a request, the data or imagery most relevant to the provided time value, if any, will be returned. If the time parameter is not specified in a request, the latest data or imagery valid for the present system time will be returned to the client. If the time parameter is not specified and no data or imagery is available for the present time, no data will be returned.
In addition to ArcGIS Server REST access, time-enabled OGC WMS 1.3.0 access is also provided by this service.
Due to software limitations, the time extent of the service and map layers displayed below does not provide the most up-to-date start and end times of available data. Instead, users have two options for determining the latest time information about the service:
Issue a returnUpdates=truerequest for an individual layer or for the service itself, which will return the current start and end times of available data, in epoch time format (milliseconds since 00:00 January 1, 1970). To see an example, click on the "Return Updates" link at the bottom of this page under "Supported Operations". Refer to the ArcGIS REST API Map Service Documentation for more information.
Issue an Identify (ArcGIS REST) or GetFeatureInfo (WMS) request against the proper layer corresponding with the target dataset. For raster data, this would be the "Image Footprints with Time Attributes" layer in the same group as the target "Image" layer being displayed. For vector (point, line, or polygon) data, the target layer can be queried directly. In either case, the attributes returned for the matching raster(s) or vector feature(s) will include the following relevant fields returned:
idp_validtime - valid time of forecast
idp_validendtime - end time of forecast
idp_fcst_hour - start time of number of hours from current time forecast is valid
In ArcGIS.com this option can be turned on by clicking the three dots under "NDFD Temp" heading and choosing "Enable Time Animation".