Ultrafine dust (PM-2.5), a first-class carcinogen, continues to flow from China through the wind, and the sky is expected to become even more cloudy on Monday.

The fine dust emergency reduction measures that entered into Seoul, Gyeonggi, Incheon, and Chungbuk are expected to be extended to other regions.

On the 10th, air pollution degree homepage 'Air Korea' operated by the Korea Environment Corporation under the Ministry of Environment showed that the average concentration of ultra fine dust in Seoul was 'bad' (36∼75㎍ / ㎥) as of 2 pm on the day. .

Incheon is also showing 'bad' levels of 51㎍ / ㎥, Gyeonggi 57㎍ / ㎥ and Chungbuk 56㎍ / ㎥.

Even in areas where emergency reduction measures have not been taken, the concentration of ultrafine dust in most areas is 'bad' except for Jeonnam and Jeju.

The air quality has deteriorated as the fine dust from China came into Korea in the warm west wind and southwest wind between the night of the night and the day of the morning of the morning of the morning from the 7th to the 10th.

At the dawn of the day, the concentration of ultrafine dust in major Chinese cities was 150-200㎍ / ㎥, which was 15-20 times the WHO recommended standard (10㎍ / ㎥).

Fine dust from China may have been diluted during the inflow process, but it is thought to have had a significant effect on domestic air quality.

According to 'Air Visual,' a fine dust data analysis company, ultrafine dust concentrations in major cities such as Shanghai, Chongqing and Shenyang, China, are around 100µg / ㎥ as of 2 pm.

An official from the National Institute of Environmental Research said, “High concentrations of fine dust in China continue to flow in the southwest and west winds.” If you sink, the air quality can get worse tomorrow morning. "

The official said, "It is not until late afternoon of the 11th that northwestern winds can blow and reduce the concentration of fine dust."

Under these weather conditions, there is a possibility that the emergency dust reduction measures in the Seoul metropolitan area and Chungbuk may be extended to other regions.

Emergency reduction measures are taken when the average ultrafine dust concentration exceeds 50 µg / m3 on the day at 0 pm to 4 pm and is expected to exceed 50 µg / m3 on the following day. When the dust warning and warning is issued and the ultra fine dust concentration is expected to exceed 50 µg / m3 the next day ▲ When the ultra fine dust concentration is expected to exceed 75 µg / m3 ('very bad') the following day It is issued.

As of 2 pm, the concentration of ultrafine dust in Chungnam (52㎍ / ㎥), Sejong (53㎍ / ㎥), and Daegu (57㎍ / ㎥) in addition to Seoul, Incheon, Gyeonggi and Chungbuk exceeded 50㎍ / ㎥.

Fine dust concentrations are forecast to be "very bad" temporarily, while the nation is expected to be "bad" on the 11th.

An official from the Ministry of Environment said, “The concentration of fine dust is gradually rising.” “We need to watch a little more, but tomorrow, the scope of emergency reduction measures can be extended to other areas as well as the metropolitan area, Chungbuk.”

(Photo = Yonhap News)