Broken AC. 81 degrees in apartment too hot for baby?

Serena

My ac broke in my apartment so I’m currently waiting for maintenance to come by and fix it. My room is the hottest room of the house so me and my 8 week old daughter are in the living room as it’s cooler with the ceiling fan in the dining room blowing. I worry about SIDS all the time and I’m a FTM. Should I keep my daughter in just a diaper for now or would a onesie and diaper be fine?

I live in California and the city I live gets up to 115 degrees.