You should always use a meat thermometer to check the doneness of pork. All pork cuts, with the exception of ham and ground pork, are safe to eat at 145°F. Ground pork is safe at 160°F, while precooked ham is ready at 140°F. For other cuts, 145°F won't produce tender pork, so follow the suggested internal temperature for pork based on your cut by using a meat thermometer.