Subset of Met Office Datapoint UK forecast for the next five days. Forecast time step available is every three-hours, updated hourly, for Prestwick Rnas as forecasted by the Met Office UK Monitoring System. That means that the value is valid for 3h from its timestamp. Observations can be found in the counterpart observation feed (please search the catalogue).

UK Open Government Licence (OGL)
Additional terms: http://www.metoffice.gov.uk/datapoint/terms-conditions