ទិន្នន័យគុណភាពខ្យល់ផ្តល់ដោយ៖ the Air Quality in Wales (airquality.gov.wales)
Note that the measurements for PM2.5 (fine particulate matter), PM10 (respirable particulate matter), O3 (ozone), NO2 (nitrogen dioxide) and SO2 (sulfur dioxide) are taken from the station: Port Talbot Margam