ການພະຍາກອນຄຸນນະພາບອາກາດ
ຂໍ້ມູນຄຸນນະພາບອາກາດສະໜອງໃຫ້ໂດຍ: Atmo en Hauts-de-France - Pas-de-Calais (atmo-hdf.fr)
Note that the measurement for SO2 (sulfur dioxide) are taken from the station: Valenciennes Acacias, Nord-Pas-de-Calais and the measurement for CO (carbon monoxide) are taken from the station: FR:Nord-Pas-de-Calais/Nord/Boussières-sur-Sambre