

But why? Just calling things dumb, or stupid, or idiotic without any explanation is just a grade school way of saying “I don’t like a thing”. Without seeking a way to understand, and thus overcome it, it’s always just going to be “I’m smart and they’re dumb”, which is often the argument of those you’d criticize of “inherent stupidity”.
I believe the temperatures within the chart are “feels like” temperatures rather than absolute temperatures. The X axis shows absolute values (what would likely show on the thermostat).
At OPs original temperature (91°F) the danger zone would be around 60-70% and higher. At OPs last updated temperature (94°F), the danger zone would be 55% or higher.