![Students walk with umbrellas at Chonnam National University in Yongbong-dong, Buk-gu, Gwangju, on the morning of April 17. [Photo=Yonhap]](https://image.ajunews.com/content/image/2026/04/22/20260422173457373720.jpg)
Thursday the 23rd will be mostly cloudy nationwide, with continued cloud cover in the Seoul metropolitan area and Gangwon Province.
Rain is expected to persist in parts of the south.
Forecast rainfall over the two days starting on the 22nd is 30 to 80 millimeters on Jeju Island (excluding the north), 10 to 40 millimeters in northern Jeju, 5 to 20 millimeters in Gwangju and South Jeolla Province and along the southern coasts of Busan and South Gyeongsang Province, and less than 5 millimeters in Ulsan and inland areas of South Gyeongsang.
Morning lows are forecast at 6 to 12 degrees Celsius, with daytime highs of 14 to 23 C.
Inland areas of the central region will see a large day-to-night temperature swing of around 15 degrees.
Air quality is expected to be poor through the morning due to lingering yellow dust and fine particles from overseas. PM-10 levels are forecast to be "bad" in the capital region, Gangwon, Chungcheong and North Jeolla, while PM-2.5 is expected to be "bad" through the morning in southern Gyeonggi and South Chungcheong.
From the afternoon, easterly winds are expected to move in and lower fine-dust concentrations.
Waves are forecast at 0.5 to 2.5 meters in the East and South seas and 0.5 to 1.5 meters in the West Sea. In offshore waters (about 200 kilometers from the coast), wave heights are expected at 0.5 to 3.0 meters in the East Sea, 0.5 to 2.5 meters in the West Sea and 1.0 to 3.5 meters in the South Sea.
* This article has been translated by AI.
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