ການພະຍາກອນຄຸນນະພາບອາກາດ

ຂໍ້ມູນຄຸນນະພາບອາກາດສະໜອງໃຫ້ໂດຍ: the Washington State Department of Ecology (ecy.wa.gov) and Air Now - US EPA (airnow.gov)
ໃຫ້ສັງເກດວ່າການວັດແທກ PM 2.5 (ຝຸ່ນລະອອງລະອຽດ) ແມ່ນເອົາມາຈາກສະຖານີ: 7th Ave, Marysville, Washington and the measurement for O3 (ozone) are taken from the station: S Second St, Mt Vernon, Washington and the measurement for CO (carbon monoxide) are taken from the station: Town Center, Lake Forest Park, Washington