On August 25, 2026, the nationwide air quality for ultrafine particulate matter is forecast to be "Good."
According to the Korea Environment Corporation’s forecast overview, all regions are expected to range from “Good” to “Moderate.”
Regarding the causes, the agency analyzed that “in most of the central and western regions and most of the southeastern regions, domestically generated fine dust will accumulate due to airflow convergence, and the daily average concentration is expected to be ‘Moderate.’”
Since PM2.5 concentrations will not be high in any region, outdoor activities are not expected to be significantly affected.
Moderate — Seoul, South Gyeongsang, North Gyeongsang, Ulsan, Daegu, Busan, South Chungcheong, North Chungcheong, Southern Gyeonggi (9 regions)
Good — Jeju, South Jeolla, North Jeolla, Gwangju, Sejong, Daejeon, Yeongdong, Yeongseo, Northern Gyeonggi, Incheon (10 regions)
※ This article was automatically generated by a robot reporter based on air quality forecast data from the Korea Environment Corporation. (Release date: August 25, 2026, 5:00 a.m.)
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