Heat wave forecast for Australia's New South Wales

Temperatures are expected to reach 40 degree Celsius in western New South Wales this weekend.

The country's Bureau of Meteorology said there's a high to very high fire risk across most of the state. 

The state's health authorities are urging people to be cautious during the impending heat wave to avoid heat-related illness. 

Signs of heat-related illness include dizziness, confusion, vomiting and headaches. 

The heat wave that affected Sydney in February last year caused 96 deaths.