South Chungcheong Province, North Jeolla Province, and Jeju Island are bad...Recovery from the afternoon

Due to the influx of smog from China overnight, the concentration of ultrafine dust in Chungnam, Jeonbuk, and Jeju rose to the level of "bad."

The National Institute of Environmental Research said that air quality deteriorated mainly in Chungnam, Honam, and Jeju due to the accumulation of pollutants due to air congestion overnight amid the inflow of smog from China.

It also added that in the afternoon, as cold air descends from the northwest, dust is pushed southeast, and air quality is expected to recover to normal levels.