Drivers may use cooling systems as FIA issues heat hazard for Italian GP

The governing body for Formula 1, the FIA, has issued a heat‑hazard warning for the Italian Grand Prix at Monza. According to the announcement, the heat index is projected to surpass the 31 °C threshold during the event.

In response, the FIA permits the use of a driver cooling system (DCS). The DCS integrates a pump, plumbing network and a thermal store that circulates cold fluid to a specially designed fire‑proof jacket. While drivers can choose whether to wear the jacket, the rest of the system must remain mounted on the car. A ballast of 0.5 kg must be added to the cockpit if the jacket is not used to maintain balance.

Monza joins other venues where the FIA has applied the heat‑hazard rule, such as the Singapore and United States Grands Prix scheduled for 2025 and the Austrian round earlier this season.

Meteorological forecasts expect temperatures of 34 °C on Friday, 35 °C on Saturday and a repeat of 34 °C on race day, prompting teams to ready the extra cooling gear.