On the 28th, South Korea is expected to experience mild early spring weather, with daytime temperatures climbing to a high of 17 degrees Celsius. Most areas across the country will have clear skies; however, the regions of Gyeongsang, excluding the east coast, will gradually become cloudier later in the evening. Coastal areas in Gangwon and Jeju Island are expected to remain primarily overcast throughout the day. The high temperatures across various regions will range from 8 to 17 degrees, slightly above the previous day's temperatures.

Significant temperature variations are predicted between day and night, especially in inland areas where the difference could exceed 15 degrees. This raises concerns over health management as the temperature fluctuates. Furthermore, the warming temperatures could thin the ice on lakes and rivers, posing a risk of breakage, along with the potential for ground subsidence or rockfalls due to thawing, prompting warnings from the Korea Meteorological Administration. Additionally, several regions are under dry weather warnings, with the atmosphere expected to be very dry, necessitating precautions against wildfires.

As for air quality, fine dust levels across the country are expected to be at normal to good levels. Rain or snow is forecasted to occur from the night into the following morning in the eastern coastal areas of Gangwon, the northern coastal regions of North Gyeongsang, and northeastern mountainous areas, with precipitation amounts varying but likely to be minimal in southern coastal areas and Busan/Ulsan adding to the weather conditions.