I usually take my little ones outside for an hour, their first couple of days out, just to get them used to it. Today (80F) was perfect for them, and they were having so much fun, I just left them (four-week-old silkies). They are in a pen with a rooster and two hens that I've had little ones with twice before. They're like the adoption family.
I would try doing it early in the morning when it's the coolest, but would worry about the back and forth from AC to outdoors and vice versa. I'd try come up with a place outdoors for them.
Hopefully, you'll be able to do that and not get into any trouble!
As @Debbie292d wrote, think about the temp changes. Can you close the ac vent? If not, cover it and use a thermometer to monitor the temp in the brooder/bathtub. Possibly lower the lamp just a smidge. Though they are fine at 80, maybe get the temp, in an area (not the whole brooder/tub to 85. Continue taking them out daily either early in the morning and/or the evening, depending on the temps, for them to adjust.