The Singapore Grand Prix this weekend was declared an official Formula One ‘Heat Hazard’ on Thursday. As the ambient temperatures are expected to reach 31 degrees Celsius on both Saturday and Sunday, it marks the first time this new rule has been applied to help drivers stay cool.

Singapore’s Marina Bay Street Circuit is one of the most physically challenging F1 races, with extreme heat, humidity, and weather conditions. During the night race, which often lasts the maximum two-hour race limit, drivers can lose up to three kilograms.

Race director Rui Marques informed the teams on Thursday afternoon about the regulation.

Marques stated, “Having received a forecast from the official Weather Service predicting that the Heat Index will be greater than 31 °C at some time during the race… a H

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