ການພະຍາກອນຄຸນນະພາບອາກາດ
ຂໍ້ມູນຄຸນນະພາບອາກາດສະໜອງໃຫ້ໂດຍ: the Monitorización Red de Calidad del Aire del Principado de Asturias (navarra.es)
Note that the measurements for PM2.5 (fine particulate matter) and CO (carbon monoxide) are taken from the station: La Felguera, Asturias