The Deputy Minister for Climate Change has agreed the publication of the Annual Data for Nitrogen Dioxide (NO2) Concentrations for the Motorway and Trunk Road for 2020 and 2021.
Mae’r Dirprwy Weinidog Newid Hinsawdd wedi cytuno i gyhoeddi’r Data Blynyddol ar gyfer Crynodiadau Nitrogen Deuocsid (NO2) ar gyfer Traffyrdd a Chefnffyrdd ar gyfer 2020 a 2021.