Some days of lower temperatures - by festival standards - haven't meant a much of a drop in patient numbers, but an intense, shortlived dust storm has set this event apart.
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That's according to St John Ambulance event commander Peter Cameron, who said cases were "trending roughly the same" in the number and type of presentations this year.
"It is cooler, but it's still quite warm if you're out walking around all day enjoying the festival; it's still quite hot," Mr Cameron said.
"Roughly we're up to about 80 patients treated so far ... some days are busier than others."
He said the common problems were heat-related illness, dehydration, fainting, minor traumas and exacerbation of old health problems.
The patients have included a woman who had onlookers concerned when volunteers rushed to help her in Peel Street on Thursday.
"She was pregnant, but she had just fainted - no deliveries, thankfully," Mr Cameron said.
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The dust storm, which rolled over Tamworth about 3.30pm on Thursday, "caused a bit of work for us".
"People with respiratory illness and dust in the eyes, mainly," he said.
NSW Ambulance transports people to hospital if needed, and there have been seven of those cases so far, Mr Cameron said, mainly people with pre-existing medical conditions.
About 50 volunteers from across the state are stationed at busy points across the city from 8am until midnight, but they've been getting a chance to enjoy themselves, too.
"We run two eight-hour shifts, from a fatigue-management and welfare point of view, so once they've done their shift, they're free to do whatever they like," Mr Cameron said.
"We've got a family who we hire a large house off, and we can use the swimming pool and everything, so it's quite comfortable for them."
Along with NSW Ambulance officers, the volunteers will be at the cavalcade on Saturday morning, on both sides of the street.
"People will be well-looked-after, but I think it's predicted to be a reasonably hot day, so people just need to look after themselves," Mr Cameron said.
Along with drinking water, he advised wearing a hat, sunscreen and sunglasses.
A top of 36 degrees is forecast, with a possible thunderstorm, which could be severe.
- Find the St John Ambulance volunteers in Toyota Park, on Peel Street next to the Australia Post building, at West Tamworth Leagues Club and at TRECC