What A/C? House has none, car has none, and plus my allergies are really bad whenever it doesn't snow, so I can't handle A/C at all. I'm better with no A/C so I'm very tolerant of not having it. I think it was severe dehydration that might've been the problem even though I was drinking water the time I was out in the sun.
Then what could it have been?
I'm also quite independent of A/C, as the A/C in our car got busted, and I prefer to not use the A/C in my room (despite the fact I sweat bullets at times during the 90 odd degree temperatures out there), as it's clumsy, and turning the knobs hurts my fingers, as they are stiff and require a lot of force to be put into it. I've really scratched up my fingers with that thing! I just like the heat, I guess.
