On September 12, 2026, the nationwide air quality for fine particulate matter is forecast to be "Good."
According to the Korea Environment Corporation’s forecast overview, all regions are expected to be rated “Good” to “Moderate.”
Regarding the cause, the agency analyzed that “air quality is expected to be generally clean due to good atmospheric dispersion.”
Since PM2.5 concentrations will not be high in any region, there should be no significant disruption to outdoor activities.
[PM2.5 Levels by Region]
Moderate — South Chungcheong (1 location)
Good — Seoul, Jeju, South Jeolla, North Jeolla, Gwangju, South Gyeongsang, North Gyeongsang, Ulsan, Daegu, Busan, North Chungcheong, Sejong, Daejeon, Yeongdong, Yeongseo, Southern Gyeonggi, Northern Gyeonggi, Incheon (18 locations)
Moderate — South Chungcheong (1 location)
Good — Seoul, Jeju, South Jeolla, North Jeolla, Gwangju, South Gyeongsang, North Gyeongsang, Ulsan, Daegu, Busan, North Chungcheong, Sejong, Daejeon, Yeongdong, Yeongseo, Southern Gyeonggi, Northern Gyeonggi, Incheon (18 locations)
※ This article was automatically generated by a robot reporter based on air quality forecast data from the Korea Environment Corporation. (Release date: September 12, 2026, 5:00 a.m.)
