Sunday heat wave

I'm sitting in my apartment this past Sunday afternoon, shvitzing.  It's really hot for some reason, even though I have the AC and fan on full blast.  It's been getting hotter and hotter all afternoon, and I can't figure out why the AC is not working.  It's a small apartment;  it shouldn't be that hard for the AC to cool everything down.

Then I realize my oven was still on from the lunch I had heated up 4 hours earlier.