ການພະຍາກອນຄຸນນະພາບອາກາດ
ຂໍ້ມູນຄຸນນະພາບອາກາດສະໜອງໃຫ້ໂດຍ: Atmo en Hauts-de-France - Pas-de-Calais (atmo-hdf.fr)
Note that the measurements for PM2.5 (fine particulate matter) and NO2 (nitrogen dioxide) are taken from the station: Harnes, Nord-Pas-de-Calais and the measurement for PM10 (respirable particulate matter) are taken from the station: Lens Varsovie, Nord-Pas-de-Calais and the measurement for SO2 (sulfur dioxide) are taken from the station: Douai Theuriet, Nord-Pas-de-Calais