One of 2023's most extreme heat waves is happening in the middle of winter

Temperatures in parts of Chile and northern Argentina have soared to 10°C–20°C above average over the last few days. Towns in the Andes mountains have reached 38°C or more, while Argentina's capital, Buenos Aires, saw temperatures above 30°C—breaking its previous August record by more than 5°C. Temperatures peaked at 39°C in the town of Rivadavia.