Photo/Illutration The Tokyo Fire Department’s building in Tokyo’s Chiyoda Ward (Asahi Shimbun file photo)

A total of 8,341 people in Tokyo were taken by ambulance to hospitals for suspected heatstroke from June through August amid the record summer heat wave in the capital, according to the Tokyo Fire Department. 

The preliminary figure marks the highest number since the department began record-keeping in 2010.

Because high temperatures are expected to continue in September, fire officials are calling on the public to maintain vigilance against heat-related illnesses. 

According to the department, the number of people taken to hospital by ambulance for suspected heatstroke has been increasing year by year.

This year marks the second consecutive record-setting year, exceeding last year's total of 7,996 patients by the end of September.

By month, July saw the highest number in 2025 with 3,439 complaints, followed by August with 3,327, and June with 1,575.

Among those transported, there was one death, 47 patients were in critical condition including cardiopulmonary arrest and 3,125 suffered from heat exhaustion or heat prostration with symptoms such as dizziness, nausea or headache due to dehydration.

Last year, 741 people were transported to hospitals in September alone. The fire department is continuing to advise the public to take preventive measures, such as frequent hydration, and to quickly call emergency services (#119) if encountering someone in a severe condition, such as unconsciousness.

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