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CHARLOTTE -- With temperatures soaring into the upper 90's, paramedics are staying busy. They responded to a higher volume of calls Thursday, including a postal worker who had to be taken to the hospital with a heat-related illness.

Dennis Hughes doesn't have to struggle to find the word to describe his day at work Thursday.

"It's hot, I promise you that," he said.

Hughes is a mail carrier and spends much of his day outdoors.

"You come in the mornings and you hydrate yourself before you go out, and make sure that you do have enough water," he said.

Thursday afternoon, one of his coworkers found out how dangerous the triple digits can be. Medic took her to the hospital and hughes had to finish her route.

"When I got here all the ambulance people were here, supervisors were here, so I'm just taking up"

The call to help Hughes' coworker was one of three heat-related calls medic responded to Thursday. Paramedics say that might not sounds like much, but they rarely get any, even during the summer.

"If you wait until you're outside and try to hydrate, you're already behind," said John Tompkins, a paramedic. "You need to be hydrating days, days ahead of the time."

Paramedics say it seems like people are taking their advice and staying hydrated.

"People have been heeding the warnings and staying in the air conditioning when they can," said Tompkins.