There are two easy ways to keep the pork loin from drying in the air fryer. u003cbr/u003e1. u003cstrongu003eDon't overcook it: u003c/strongu003eMake sure you check the internal temperature with a meat thermometer after 40 minutes. When the thermometer reads 145°F, it's time to take it out. u003cbr/u003e2.u003cstrongu003e Let it rest:u003c/strongu003e Before slicing it, you must allow it to rest. This locks in so much moisture and really makes the difference between a dry slice of pork and a juicy one. I let my roast rest for 20 minutes before slicing.