Multiple ambulances were called to the Lake Bluff Fire Department, 45 East Center Avenue in Lake Bluff, to treat numerous people experiencing heat exhaustion during a parade Tuesday afternoon. | Photo: Max Weingardt

Three children were transported to the hospital after members of a marching band suffered heat exhaustion during the Fourth of July parade in Lake Bluff.

The last few floats were reaching the end of the parade’s mile-long route around 12:50 p.m. Tuesday.

Firefighters with the Lake Bluff Fire Department noticed some members of an out-of-state marching band were suffering from the heat, according to Lake Bluff officials.

The Mutual Aid Box Alarm System (MABAS) was activated to the box alarm level to bring multiple ambulances from Lake County fire departments to the scene.

Multiple ambulances were called to the Lake Bluff Fire Department, 45 East Center Avenue in Lake Bluff, to treat numerous people experiencing heat exhaustion during a parade Tuesday afternoon. | Photo: Max Weingardt

Three band members from the 70-member group were taken to the Lake Bluff Public Safety Building.

They were then transported by ambulance to Lake Forest Hospital for treatment, officials said.

The rest of the band troupe was also directed to the public safety building so they could cool off and be assessed by paramedics.

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Multiple ambulances were called to the Lake Bluff Fire Department, 45 East Center Avenue in Lake Bluff, to treat numerous people experiencing heat exhaustion during a parade Tuesday afternoon. | Photo: Joe Shuman/J. Shuman Photography (2023)

“Every Fourth of July Parade we have 2 to 3 ambulance transports. When it’s hot, it is not uncommon for the calls for service to be heat related,” Lake Bluff Fire Chief David Graf said.

The band members cooled off and hydrated before they were released to head back home on their buses for the rest of the holiday.

Temperatures had reached nearly 90 degrees when the band members fell ill from the heat.