Formula 1’s governing body the FIA has declared a heat hazard for this weekend’s Italian Grand Prix, forcing drivers to either wear cooling vests or attach ballast to their cars.

Temperatures across Italy have soared once again in recent days, with a sixth heatwave of the summer affecting the country over the next week.

The region around Milan and Monza is bracing for temperatures north of 35C which has triggered the FIA’s heat protocol.

“In accordance with Article B1.5.10 of the FIA F1 Regulations, having received a forecast from the official weather service predicting that the heat index will be greater than 3