Racing Queensland officials have acted on weather bureau advice in moving today's Ipswich race meeting to tomorrow.
Chief steward Wade Birch said it had been hoped Ipswich could go ahead today with the usual precautions in place.
But advice from the bureau that temperatures would reach 45C has forced a switch.
"It is the first time I can remember a meeting in southeast Queensland being moved because of the heat," Birch said. "But we have said all along human and horse safety has to be a paramount," he said.
The Gold Coast's Goldmarket meeting will go ahead with 35C forecast.