With my new laser infrared thermometer I can measure the temperature of any surface. The attic upstairs goes up to 104F (42C) even though outside it’s “only” 93F (34C)

So I postpone pulling the line set up there until tomorrow morning.

And some other time I might install a gable louver vent in the attic, so that the hotter than outside air can flow out.

The great room AC still works pretty well; the temperature at the air outlet is 55F (12C)