is it safe to have the aircon on at night with 2 month old?

hi mummies, just wondering if its safe to have the aircon on at night w/ LO when sleeping— i realised whenever we have the fan on in the room, my LO ends up being sweaty throughout the night and it worries me. but im also super skeptical about having the aircon on as its been known that babies cant really regulate their temp at this age