ການພະຍາກອນຄຸນນະພາບອາກາດ
ຂໍ້ມູນຄຸນນະພາບອາກາດສະໜອງໃຫ້ໂດຍ: the Washington State Department of Ecology (ecy.wa.gov) and Air Now - US EPA (airnow.gov)
Note that the measurement for O3 (ozone) are taken from the station: Central and James, Kent, Washington and the measurement for NO2 (nitrogen dioxide) are taken from the station: S 36th St, Tacoma, Washington