The forecast indicates that the heatwave will continue in most regions across the country on Friday, the 4th.
According to the Korea Meteorological Administration, the morning low temperatures nationwide are expected to be between 21 and 28 degrees, while the daytime highs are forecasted to range from 30 to 36 degrees.
With a heatwave advisory in effect nationwide, the maximum perceived temperature in most areas is expected to rise above 33 degrees.
The Korea Meteorological Administration forecasted that the metropolitan area and Gangwon Province will be mostly cloudy, while other regions will be generally clear.
From early morning to the morning hours, there will be places in the metropolitan area and inland mountainous regions where raindrops of less than 0.1 mm may fall, and there may be occasional rain throughout the day.
The expected precipitation is 5 to 20 mm in Incheon, northern Gyeonggi Province, the five islands of the West Sea, and inland mountainous areas of Gangwon, while around 5 mm in southern Seoul and Gyeonggi Province.
The concentration of fine dust is expected to be at levels ranging from 'good' to 'moderate' nationwide.
Until morning, there will be places along the west coast, the south coast, and inland with visibility of less than 1 km due to fog, and there may be drizzles.