Seoul experienced extreme temperatures this week as the Korea Meteorological Administration issued the nation's first-ever heat-wave severe warning [4].
The deployment of specialized monitoring equipment highlights the growing intensity of urban heat-island effects in South Korea's capital. By tracking real-time data, officials aim to document how built environments amplify heat during critical weather events.
A YTN news crew and the Korea Meteorological Administration used a weather-observation vehicle to record temperature, humidity, wind, and surface heat across the city [1]. The vehicle identified several hotspots where the heat was most concentrated.
In Guro-Onsu-dong, the mobile unit recorded a maximum ambient temperature of 39°C [1]. This figure exceeded the typical ambient temperature observed across other parts of Seoul during the broadcast, which hovered around 38°C [2].
Reporter Kim Min-kyung said she was stationed in Guro-Onsu-dong to monitor these spikes [2]. The data suggests that specific districts are experiencing higher thermal stress than others due to urban density.
The observation team also measured surface temperatures at Gwanghwamun Square. Despite the use of water trucks to cool the area, road-surface temperatures reached nearly 50°C [3].
"Seoul's temperatures across various locations rose to around 38 degrees," a YTN anchor said [2]. The use of the mobile vehicle allowed the crew to capture the disparity between official stationary weather stations and the actual heat felt by pedestrians on the street.
“Seoul experienced extreme temperatures this week as the Korea Meteorological Administration issued the nation's first-ever heat-wave severe warning.”
The issuance of a 'heat-wave severe warning' for the first time in South Korean history indicates a shift in the country's climate risk profile. The significant gap between ambient air temperature and road-surface temperature—nearly 12 degrees in some areas—demonstrates the severity of the urban heat-island effect, where concrete and asphalt trap heat and increase health risks for city residents.
