At least 10 individuals were hospitalized and 100 others sought medical attention for heat-related ailments at a sold-out airshow in Colorado on Saturday, according to authorities.

With an anticipated attendance of 30,000 people, the two-day Pikes Peak Air Show commenced at the Colorado Springs Airport, approximately 90 miles from Denver.

A few hours after the event began, the Colorado Springs Fire Department announced that they were "actively responding" to a mass casualty incident.

At least 100 people received medical care from emergency personnel on-site, and 10 were transported to local hospitals, CSFD stated in a press release.

An update on the patients was not given Saturday evening.

"We classify an incident as a mass casualty when we encounter a situation like this, involving numerous heat-related illnesses. This allows us to request additional resources," CSFD Public Information Officer Ashley Franco informed ABC affiliate, KRDO .

Temperatures peaked at 96 degrees in the region, with minimal to no cloud cover, according to the National Weather Service.

"The Colorado Springs Fire Department collaborates closely with the airport and event organizers during major events. As always, we had a plan ready in case it was needed," stated CSFD Chief Randy Royal.

The Pikes Peak Air Show is set to continue on Sunday, with a heat advisory in effect and a forecasted high of 93 degrees. CSFD advised attendees to come prepared, "With water bottles, hats, sunscreen, umbrellas and other necessities to combat the heat."

' Erica B. Morris contributed to this report.