What is lowest temperature that a flame can be?

Question

'coldest fire'

Answer 1

Since temperature is used to measure molecular motion I do not expect to find say "cold fire" since fire itself is produced from extremely high levels of molecular motion. Like when you rub your hands together you notice heat (do not confuse heat with temperature, they are related but heat is energy that is gained or released during a change in temperature) that comes from exited molecules in your body vibrating because of their increase in temperature. No if you were to rub your hands a couple of thousand metres per second your hands would catch fire. It is because the molecules in your hands would be moving extremely fast. I suppose if you want the coldest one I would guess around 500 °C to 530 °C.

Answer 2

subwarm temperatures.