Perth's high temperatures have prompted the Department of Fire and Emergency Services to renew their calls for people to heed fire alerts.
The maximum temperatures from now through to Sunday are expected to reach the early forties, increasing the risk of a bushfire.
DFES state duty director Chris Arnol says that although emergency crews are well prepared, residents need to make an effort to minimise the risk.
"We are into summer, so we know that we need to be ready," he said.
"The important thing is that bushfire of course is a shared responsibility and we want the residents to stay up to date, keep alert, speak to their neighbours and look at our DFES website."
© ABC 2012
12:42 EDT Yesterday, the majority of the Upper Western district in New South Wales experienced their first 40 degree day for spring this year.