Tokyo officials say 187 people died of heatstroke in August in the Japanese capital. Of those people, 178 passed away indoors.

The Medical Examiner's Office says 95 percent of those who perished indoors were not using air conditioners.

Officials in Tokyo say 28 people died of heatstroke in the city during the eight-day period from August 12 to August 19. That brings the total number of fatalities this month to 131.

The Medical Examiner's Office says that 11 of the 28 victims were in their 70s. Ten were in their 80s. It says about 80 percent of the victims were at least 70 years old.

People in Tokyo are struggling with the scorching summer heat. Health officials say 79 people died of heatstroke in the capital this month.

They say about 80 percent of the victims were aged 70 or older. Most of them either did not have an air conditioner or were not using it.

Officials in Tokyo say 26 people died of heatstroke in the metropolitan area over nine days through Monday, as a severe heat wave continues to grip Japan.

The Medical Examiner's Office said about 80 percent of the victims were aged 70 or over.

Japan was blanketed by sweltering heat on Sunday. Temperatures in many areas rose above 35 degrees Celsius, putting people's health at risk.

It was the hottest day of the year so far in many places. In central Tokyo, the daytime high was just under 35 degrees.

Temperatures soared on Tuesday across wide areas in Japan. The country is no stranger to blazing summers, but the need to wear facemasks due to the coronavirus poses a health risk all of its own -- heatstroke.

A high-pressure system pushed temperatures up. The mercury topped 35 degrees Celsius in a part of Fukuoka Prefecture in the southwest, and some other areas.