With temperatures expected to soar over the next few days, police are warning people not to leave children unattended in hot cars.
It comes after an incident in Ulladulla on the South Coast.
Paramedics say police called them to a car park at a shopping centre to assess a young child who had been found locked in a car.
The child was heat affected, but did not need hospital treatment.
With the Weather Bureau predicting temperatures in the high 30s and 40s over the coming days, police say it is dangerous to leave children, the elderly or pets unattended in cars - even if the air conditioner is on.
Police say although it may seem inconvenient to take a child or pet to pay for petrol or pop into a shop, the consequences of leaving them could be deadly.
© ABC 2012
13:25 EDT After a fairly cloudy morning, Sydney's skies are clearing nicely for a starry but cool night for Carols at the Domain.