Seoul and other metropolitan areas and Chungcheongnam-do 'emergency reduction measures'...For the first time this winter,

For the first time this winter, "high-concentration fine dust emergency reduction measures" were imposed in the metropolitan area such as Seoul, Gyeonggi, and Incheon and Chungnam.

'High concentration fine dust emergency reduction measures' are imposed when the average concentration of ultrafine dust exceeds 50μg (microgram) on the day and the same level of 'high concentration' is expected the next day.

The National Institute of Environmental Research said that smog added to the atmospheric stagnation and the concentration of ultrafine dust soared to four times the usual level in the Midwest, and that high concentrations will be maintained in the central region tomorrow.If emergency reduction measures for

high concentration of fine dust are taken, a two-day system for vehicles in public institutions will be implemented from 6 a.m. to 9 p.m., and shorter operating hours of air emission workplaces and construction sites and schools, kindergartens, and daycare centers will be recommended to close or shorten classes.