"The exercise is aimed at comprehensively checking the capacity of the central and local governments and Cheong Wa Dae to tackle fine dust," a presidential official said.

    The mock training will start at 6 a.m. with the assumption that a "caution" alert is issued.

    South Korea runs the four-tier alert levels for fine dust -- concern, caution, warning and severe.

    The "caution" is issued when the daily average density of ultrafine dust exceeds 150 micrograms per square meter for more than two hours or it is forecast to surpass 75 micrograms the following day.

    In March, South Korea designated fine dust as a social disaster as the intensity and frequency of the air pollution has increased in recent years.

    For the exercise, civil servants and officials at public institutions in those areas are required to leave their cars at home based on odd-even number plates.

    Kim Yeon-myoung, senior presidential secretary for social affairs, will also visit a construction site in western Seoul with city government officials to inspect efforts to reduce fine dust emissions. (Yonhap)