ការព្យាករណ៍គុណភាពខ្យល់
ទិន្នន័យគុណភាពខ្យល់ផ្តល់ដោយ៖ the Atmo Auvergne (atmoauvergne.asso.fr)
Note that the measurements for PM2.5 (fine particulate matter), PM10 (respirable particulate matter) and CO (carbon monoxide) are taken from the station: Gare, Clermont, Auvergne