In Japan, authorities issued heatstroke alerts to tens of millions of people in 20 of its 47 prefectures as near-record high temperatures scorched large areas.

Afghan Voice Agency (AVA) - Monitoring: Predictions of historic heat hung over swathes of Asia, Europe and the United States.
In the Vatican, 15,000 people braved sweltering temperatures to hear Pope Francis lead prayer, using parasols and fans to keep cool.
But in their black robes, priests like Francois Mbemba said they were “sweating like hell”.
The 29-year-old said it felt hotter in St Peter’s Square than in his Democratic Republic of Congo diocese.
In Japan, authorities issued heatstroke alerts to tens of millions of people in 20 of its 47 prefectures as near-record high temperatures scorched large areas and torrential rain pummelled other regions.
National broadcaster NHK warned the heat was life-threatening, with the capital and other places recording nearly 40 degrees Celsius.
Japan’s highest temperature ever 41.1°C first recorded in Kumagaya city, Saitama, in 2018 could be beaten, according to the meteorological agency.
Some places experienced their highest temperatures in more than four decades on Sunday, including Hirono town in Fukushima prefecture with 37.3°C.
The United States National Weather Service reported that a powerful heatwave stretching from California to Texas was expected to peak during an “extremely hot and dangerous weekend”.
California’s Death Valley, often among the hottest places on Earth, is also likely to register new peaks on Sunday, with the mercury possibly surpassing 54°C.
At a Texas construction site outside Houston, a 28-year-old worker who gave his name only as Juan struggled in the blazing heat.
“Just when I take a drink of water, I get dizzy, I want to vomit because of the heat,” he told AFP.
Southern California is fighting numerous wildfires, including one in Riverside County that has burned more than 7,500 acres (3,000 hectares) and prompted evacuation orders.
Further north, the Canadian government said wildfires had burned a record-breaking 10 million hectares this year, with more damage expected as the summer drags on.
Historic highs forecast
In Europe, Italians were warned to prepare for “the most intense heatwave of the summer and also one of the most intense of all time”.Predictions of historic highs in the coming days led the health ministry to sound a red alert for 16 cities including Rome, Bologna and Florence.
Temperatures are likely to hit 40°C in Rome by Monday and 42°C-43°C on Tuesday, smashing the record of 40.5°C set in August 2007.
Sicily and Sardinia could wilt under temperatures as high as 48°C, the European Space Agency warned “potentially the hottest temperatures ever recorded in Europe”.
The Acropolis in Athens, one of Greece’s top tourist attractions, closed for a third day running on Sunday during the hottest hours.
In Romania, temperatures are expected to reach 39°C on Monday across most of the country.
Little reprieve is forecast for Spain, where the met agency warned of a new heatwave on Monday through Wednesday taking temperatures above 40°C in the Canary Islands and the southern Andalusia region.
On La Palma island, which endured a volcanic eruption in 2021, a fire burned 5,000 hectares this weekend, forcing the evacuation of 4,000 people.