South Korea records its highest temperature since modern weather observations began as a heatwave continues to intensify across the country. Multiple reports say temperatures reach 41.4°C in parts of South Korea, marking a new national record. The heatwave pushes conditions above 40°C for at least a third consecutive day in some areas, according to the accounts provided. The elevated temperatures persist across the affected regions as the prolonged weather event worsens. Authorities and local services are dealing with the extreme heat, though the specific measures and impacts are not detailed in the excerpts. Overall, the sources agree the record high of 41.4°C occurs during an ongoing, country-wide heatwave that keeps temperatures at or above 40°C for multiple days in parts of South Korea. The reports frame the event as an intensifying period of extreme summer weather with record-breaking readings.