tscottme wrote:
What quirk of nature caused only the reporter's aircraft to become heat
soaked while sitting in 100 degree weather?

The fact that the APU was malfunctioning, thus no cabin ventilation until
engine start-up, and that the very engine start-up which was instrumental
in preventing slowly boiling the passengers to perfection was delayed for
over two hours.

So, it wasn't simply a hot day, it was a very unprofeesional handling of a
problem with an airplane - by the airline, mind, it seems the crew did the
best they could.