The Italian Grand Prix at Monza has been officially declared a heat-hazard race because temperatures are expected to rise above 31°C during Sunday’s race. Temperatures around Monza are forecast to reach the mid-30s, following a period of very hot weather across Italy.
The decision allows Formula 1 drivers to use a cooling system designed to reduce their body temperature while racing. The system circulates cooled liquid through pipes in a fireproof layer worn underneath their racing suits.
The cooling system is optional, but drivers who choose not to use it must carry an additional 5kg of ballast in their cars. This prevents drivers who do not use the system from gaining a performance advantage.
The Italian Grand Prix is the second Formula 1 race this season to be classified as a heat-hazard event, following the Austrian Grand Prix earlier in the summer. Some drivers may choose not to use the cooling system because it can be uncomfortable and there have been concerns about the coolant running out before the race ends.
Heat is a serious concern for Formula 1 drivers because cockpit temperatures can exceed 40°C. Drivers also wear several layers of fireproof clothing, along with a balaclava and helmet, making the conditions particularly demanding.
