The FIA has announced a declaration of a Heat Hazard for this weekend’s Formula 1 Singapore Grand Prix, the first time since the rule was introduced.
Ahead of the 2025 season, the sport’s governing body implemented in its regulations – Article 26.19 – that, should the ambient temperature reach 31 degrees or above, the hazard would be declared.
With the Heat Index now confirmed to be reaching that at some stage over the course of the weekend, the declaration has been made.
The 31-degree milestone is expected to be reached on Saturday, with thunderstorms and rain expected on Friday and potentially during the race itself.
This means that teams will be required to fit cooling devices to the cars to be made available for the drivers to use.

These devices, somewhat controversial with mixed opinions from the drivers, will be compulsory next year, as they will be already rigged to the brand new 2026 cars.
The new rules were spawned after the Qatar Grand Prix of 2023, in which a number of drivers suffered profusely with the high temperatures, with Esteban Ocon reporting vomiting in his helmet, and Logan Sargeant retiring a healthy car due to the effects of the heat.
Last year, the humid conditions in Singapore caused problems before the race weekend got underway, with both Lewis Hamilton and George Russell pulled from their respective Mercedes media duties due to heatstroke.
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