Much of southern Europe is experiencing extreme heat, with warnings that local records could be broken in Italy, Greece, Turkey and the Balkans, reports BBC.
The temperature could reach 47C in Sardinia this week, Italian media report - the hottest temperature ever recorded in Europe was 48.8C in Sicily in August 2021.
Italian authorities have issued red alerts for 16 cities, while a wildfire on the Canary island of La Palma has forced the evacuation of 4,000 people.
In the US, a heat dome over the south-west has left millions of people under extreme heat warnings, with forecasters saying temperature records are likely to be broken.
Temperatures in Death Valley in California hit 53.9C on Sunday - the hottest temperature ever reliably recorded on Earth is 56.7C.
China has have also been experiencing heat extremes and provisionally recorded its highest temperature ever, of 52.2C in Xinjiang in the north-west on Sunday.
The World Meteorological Organisation has warned that extreme weather resulting from a warming climate is "unfortunately becoming the new normal.”
Bd-pratidin English/Golam Rosul