Air quality for ultrafine particulate matter nationwide is forecast to be "Good" on July 31, 2026.
According to the Korea Environment Corporation’s forecast overview, all regions are expected to range from “Good” to “Moderate.”
Regarding the cause, the agency analyzed, “Foreign fine particulate matter at the ‘Moderate’ level, which began flowing in from the afternoon, primarily in some central and western regions, is expected to rise in concentration at night due to atmospheric stagnation, resulting in a daily average concentration of ‘Moderate.’”
Since PM2.5 concentrations will not be high across all regions, outdoor activities are not expected to be significantly affected.
Moderate — Seoul, Southern Gyeonggi, Incheon (3 areas)
Good — Jeju, South Jeolla, North Jeolla, Gwangju, South Gyeongsang, North Gyeongsang, Ulsan, Daegu, Busan, South Chungcheong, North Chungcheong, Sejong, Daejeon, Yeongdong, Yeongseo, Northern Gyeonggi (16 areas)
※ This article was automatically generated by a robot reporter based on air quality forecast data from the Korea Environment Corporation. (Release date: July 31, 2026, 5:00 a.m.)
