Overnight, Incheon and southern Gyeonggi-do ultrafine dust temporarily 'bad'

Overnight, the concentration of ultrafine dust in Incheon and parts of southern Gyeonggi Province is expected to temporarily rise to the "bad" level.

The National Institute of Environmental Research said that due to the influx of fine dust from abroad overnight, there will be places where the concentration of ultra-fine dust exceeds 36 micrograms per cubic meter, once the "bad" level.

Especially on the morning commute, there is a possibility that the concentration will become thicker due to thick fog.