Air will be murky in many places over the weekend due to fine dust from China. As the Korean Peninsula comes under the influence of high pressure, the atmosphere has become stagnant. Early next week, spring rain is expected to wash away some of the fine dust.
According to the Korea Meteorological Administration National Institute of Environmental Research, on the 28th fine dust levels are forecast to be "bad" in the greater Seoul area, Yeongseo in Gangwon, the Chungcheong region, North Jeolla, the Yeongnam region, and Jeju. Yeongdong in Gangwon, Gwangju, and South Jeolla are expected to be "moderate."
Fog will also be dense. As of 6 a.m. that day, some areas centered on Incheon–Gyeonggi, Gangwon Province, South Chungcheong, and the West Sea coast of Jeolla have fog with visibility under 200 meters. Generally, when visibility is under 1 kilometer, it is considered dense fog with poor visibility. At 200 meters, the distance visible to the eye is about one-fifth of that.
Roads near coasts, lakes, and rivers will have even denser fog than surrounding areas, so pay attention to traffic safety. Sea fog is also expected over the central West Sea and central East Sea, so beware of maritime accidents. The Korea Meteorological Administration said, "Incheon Airport, Yangyang Airport, and Gwangju Airport are under low-visibility advisories, and aircraft operations may be disrupted due to dense fog," adding, "Passengers should check flight information in advance."
The day's highs are forecast between 14 and 23 degrees. Centered on the central inland and the southern regions, daytime temperatures will rise to around 20 degrees, widening the diurnal temperature range. In the greater Seoul area, inland Gangwon, Daejeon, North Chungcheong, and the North Gyeongsang region, where dry weather advisories are in effect, the air will be dry with slightly strong winds. Small embers can spread into large fires, so take care to prevent fires.
On the 30th, rain is expected in many parts of the country. Expected rainfall is less than 5 mm in southern Gyeonggi and southern Gangwon; around 5 mm in Daejeon, Sejong, South Chungcheong, and North Chungcheong; 5–10 mm in Daegu, North Gyeongsang, Ulleungdo, and Dokdo; 5–20 mm in North Jeolla, Busan, Ulsan, and South Gyeongsang; 5–30 mm in Gwangju and northern South Jeolla; and 10–40 mm in southern South Jeolla. Jeju Island is expected to receive 20–60 mm. In Jeju's mountainous areas, some places will see more than 80 mm of rain.