A TODDLER has died after being “forgotten” inside a car in Spain – amid a horror heatwave which has seen temperatures surpass 35 degrees.

The boy, believed to be aged around two, was left inside his dad’s car on an industrial estate in the Costa Dorada town of Valls near the east coast city of Tarragona.

The alarm was raised around 3pm on Tuesday afternoon before firefighters rushed to the vehicle.

When they arrived, they found the youngster’s dad beside the child with the car door already open.

They tried to revive him with help from emergency medical responders who arrived soon after.

The responders practised CPR on the toddler before discovering he had gone into cardiac arrest.

Efforts to save his life were unsuccessful – and he was tragically pronounced dead at the scene.

A police probe into the horror accident has been launched.

It is unclear if any arrests have been made yet, but police questioned the parent shortly after the ordeal.

Police sources said the toddler’s dad had arrived for work at around 9am and allegedly forgot the child in his seat in the back of his car, the Daily Mail reported.

A horrified colleague is believed to have alerted the dad around six hours later – after passing by the car on the industrial estate and spotting the child inside.

Detectives are now reportedly working on the theory that the child died from heat exhaustion and dehydration after being left in the vehicle in 35 degree heat.

Psychologists have also been brought in to provide the toddler’s family with counselling.

More than 100 deaths since Saturday have been linked to Spain’s first summer heatwave.

Temperatures around 3pm on Tuesday in Valls went over 35 degrees.

In June, another dad was arrested after his helpless 18-month-old son died from being locked in a blazing hot car for three excruciating hours.

Scott Allen Gardner, 33, got a haircut and went drinking at a bar while his little boy’s temperature rose to a brutal 111 degrees, police said.

The dad was accused of ditching his son in the middle of the afternoon on June 6, when temperatures in Ormond Beach, Florida, north of Orlando, soared to 92 degrees.

After finally leaving Hanky Panky’s Lounge, Gardner went on to wait hours before finally calling the police and reporting the death, the Volusia Sheriff’s Department said.

When detectives interviewed the dad, he allegedly lied multiple times about what had happened.

Two weeks after his son’s death, Gardner was arrested at his mother’s home, video released by the sheriff’s department revealed.