‘Heat hazard’ at Singapore GP means F1 drivers will carry cooling equipmentBy Canadian Press on October 2, 2025. Share this story:SINGAPORE (AP) — This week’s Singapore Grand Prix has officially been declared a “heat hazard,” meaning cars must carry cooling equipment. Race director Rui Marques declared a heat hazard on Thursday because the temperature is forecast to be above 31 degrees (88 F) during the race weekend. Singapore is a notoriously tough race for F1 drivers because of the heat and humidity on the street circuit, even though the race is held at night. In the past, F1 drivers have said the Singapore heat makes their in-car drinking water supplies uncomfortable to drink, some likening it to hot tea .