On the second day of the Seollal holiday, February 15, South Korea experiences relatively warm weather, with daytime temperatures predicted to reach between 6 to 19 degrees Celsius, considerably higher than usual for this time of year. According to the Korea Meteorological Administration's forecasts, morning lows will range from -2 to 7 degrees Celsius across the nation, with the capital city, Seoul, seeing a low of around 4 degrees. Other cities like Busan and Ulsan will see higher lows of 7 and 4 degrees, respectively.

However, while the weather is mild, the air quality is expected to deteriorate, particularly in metropolitan and central regions where fine dust levels are projected to be poor. Areas like the greater Seoul metropolitan area, Gangwon, Chungcheong, Gwangju, North Jeolla, and South Gyeongsang regions will experience significant levels of fine dust pollution, which may pose health risks for sensitive groups. The forecasts suggest that some regions, excluding the eastern Gangwon coast, might see light rainfall in the early morning, though this will not significantly alleviate the dust situation.

This juxtaposition of pleasant temperatures alongside health concerns due to pollution highlights the challenges faced by South Korea during its holiday seasons. While many families enjoy the warm weather to celebrate the Lunar New Year, the health implications of the accompanying air quality issues remind citizens of the persistent environmental challenges the country faces, particularly during winter months when pollution tends to peak.