Welsh Government – Tackling roadside nitrogen dioxide concentrations in Wales (2018 and 2019)

• Last modified: 25/01/22
• Published: 13/03/20
• Website: gov.wales

Welsh Government supplemental plan to the UK plan for tackling roadside nitrogen dioxide concentrations 2017 – Annual Data for NO2 Concentrations for the Motorway and Trunk Road for 2018 and 2019