A five-year-old girl found in a car parked in the driveway of a home in the Hunter region of New South Wales last week in searing heat has died in hospital

The child was placed in an induced coma after being found unresponsive in the vehicle outside a house, in Port Stephens on Tuesday afternoon..

She died this morning.

Temperatures hit 35C in the area that afternoon.

Last weekend, two sisters - aged one and two - died inside a station wagon parked across the front yard of a family home in Logan, south of Brisbane.

Their mother, 27-year-old Kerri-Ann Conley, was charged with two counts of murder and was remanded in custody.

In Auckland during the week a young girl, thought to be aged between five and seven years, was rescued from a car in sweltering heat in Kohimarama, after emergency services smashed a window to release her.