Add the tri-tip to the bowl. Move the tri-tip around in the bowl so it’s well-coated then refrigerate it for a minimum of 1 hour and up to overnight.

When ready to cook, remove the tri-tip from the fridge and let it rest at room temperature for 30 minutes.

Preheat the air fryer to 400°F.

Place the tri-tip in the basket (discarding the marinade) and cook it for 8 minutes per pound until it reaches your desired level of doneness. Remove the tri-tip from the air fryer when it reaches an internal temperature of 130°F for medium-rare, 140°F for medium and 150°F for medium-well. (The tri-tip internal temperature will rise about 10°F while it rests.)

Transfer the tri-tip onto a cutting board, tent it with foil and let it rest for 10 minutes before slicing and serving.