South Korea issues first emergency heatwave alertemergency heatwave alert under new rating system
South Korea issued its first-ever emergency heatwave alert on Sunday under a new warning system introduced this year, advising all outdoor activities to stop immediately.
The alert signals conditions where even healthy people face a significantly elevated risk of serious harm, including heat-related illness and death, marking a critical test of the nation's updated climate safety protocols.
- South Korea's summer temperatures have risen by over 1.5 degrees Celsius since 1980, increasing the frequency of extreme heat events.
- The new 2026 warning system was developed after the deadly 2018 heatwave that caused over 400 deaths across the country.
- Seoul's urban heat island effect can make city temperatures up to 5 degrees hotter than surrounding rural areas during summer peaks.
