South Korea registered its highest temperature since records began more than a century ago on Sunday, as authorities warned people to "immediately" stop all outdoor activities in affected areas. The southeastern city of Yangsan saw the temperature reach 42.5C at 1:26 pm (0426 GMT), the Korea Meteorological Administration said on its website. Advertisement AdvertisementAdvertisement AdvertisementPeople flocked to air-conditioned shopping malls or cafes to escape the blistering temperatures, an AFP reporter saw. Advertisement AdvertisementAdvertisement AdvertisementIssuing a heat warning, the weather agency urged people to "immediately stop all outdoor activities", adding that "indoor spaces without air conditioning are dangerous". Europe also sweltered through a scorching summer this year, with prolonged heatwaves pushing temperatures above 40C in parts of the south.