TEMPERATURES are set to soar over the weekend as this week's heatwave sticks around.
The Wide Bay Burnett copped temperatures about 39 degrees on Wednesday and Thursday.
After a hot and humid start to the week, residents in Gayndah saw temperatures climb to 36 degrees on Tuesday.
Bureau of Meteorology meteorologist Annabelle Ford said the heatwave was due to stagnant airmass across the region.
"The heat has been building up over the last several days and, with stagnant airmass not changing at all, it allows the heat to build up,” Ms Ford said.
As the days progress, thunderstorms are expected to linger at least until the weekend.
"We're expecting thunderstorms every day with this current weather,” Ms Ford said.
"The temperatures will stay above average all week with mostly sunny days,” she said.
Nearby Blackall, southeast of Longreach, broke records for the second time this month, only dropping to 30.7C on Monday night.
The Queensland Ambulance Service reported 17 calls for heat-related issues on Tuesday.
Ms Ford advised everyone to heed calls to stay indoors and in air-conditioning.
"Stay hydrated, stay cool and avoid working during the hottest part of the day. If you can, stay in the air-conditioning,” she said.
QAS director of operations David Hartley said risk of heat-related illnesses would be high during the middle of the day.
"We'll be encouraging as many people as possible to stay indoors and out of the heat to protect themselves from heat illness,” he said.
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