What Temp To Cook Pork Loin

Pork loin responds well to moderate oven heat, but the final internal reading matters most. If you are wondering what temp to cook pork loin, the short answer is 145°F for a juicy, safe result. That number comes from the USDA and it changed the old way many of us were taught to cook pork.

For years, people cooked pork until it was grey and dry. Today we know better. A little pink in the middle is fine and even desirable.

The oven temperature and the internal temperature are two different things. Both matter, but the internal reading is the one that decides when you pull the meat out.

The Short Answer

Oven temp: 350°F to 375°F
Internal temp: 145°F
Rest time: 3 to 5 minutes

Set your oven to 350°F for a roast that cooks evenly without drying out. Some cooks prefer 375°F for a bit more browning on the outside. Either works fine.

The 145°F target applies to whole pork loin roasts and pork loin chops. Ground pork is different and needs 160°F.

Why 145°F Is The Right Number

Food safety rules used to say 160°F for pork. That was based on fear of trichinosis, a parasite that is now very rare in commercial pork.

Modern farming and inspection have basically removed that risk. The USDA lowered the recommended temp to 145°F back in 2011.

At 145°F, the meat is safe and still juicy. Push it to 160°F and you get a dry, chewy roast. That is the whole reason this number matters so much.

Carryover Cooking Matters

Here is a detail many people miss. Meat keeps cooking after you take it out of the oven.

The internal temp can rise another 5 to 10 degrees while the roast rests. So if you pull it at 145°F, it might climb to 152°F on the counter.

For that reason, some cooks pull pork loin at 140°F and let carryover finish the job. Try both and see what you like.

How To Cook Pork Loin Step By Step

Follow these steps and you will get a tender roast every time. The method is simple and does not need fancy gear.

Take the pork loin out of the fridge 30 minutes before cooking. This helps it cook evenly.
Pat it dry with paper towels. Dry meat browns better.
Season all over with salt, pepper, and any herbs you like. Garlic powder and rosemary work great.
Preheat your oven to 350°F.
Place the loin in a roasting pan, fat side up.
Insert a meat thermometer into the thickest part, away from bone and fat.
Roast until the internal temp hits 140°F to 145°F.
Remove from the oven and cover loosely with foil.
Let it rest 3 to 5 minutes before slicing.

That is it. No basting needed, no flipping, no stress.

How Long Does It Take

Time depends on the size of your roast. Use these rough guides for a 350°F oven.

2 to 3 pound loin: 45 to 60 minutes
3 to 4 pound loin: 60 to 75 minutes
4 to 5 pound loin: 75 to 90 minutes

These are estimates only. Always trust the thermometer over the clock. A roast can hit 145°F sooner or later than you expect.

What About Boneless Vs Bone In

Boneless pork loin cooks a little faster. Bone in roasts take longer because the bone slows heat transfer near the center.

Both are fine. Just check the temp early and often so you do not overshoot.

Common Mistakes To Avoid

Most dry pork comes from a few simple errors. Avoid these and your roast will be tender.

Cooking to 160°F or higher. This is the biggest one. Stop at 145°F.
Skipping the rest. Slicing right away lets the juices run out.
Not using a thermometer. Guessing never works with pork.
Cooking cold meat straight from the fridge. Let it sit out first.
Cutting the roast against the grain. Slice across it for tender bites.

A basic instant read thermometer costs under 20 dollars. It is the best tool you can buy for pork.

Resting And Slicing Your Pork Loin

Resting lets the juices redistribute through the meat. Skip this and they end up on the cutting board instead of your plate.

Three to five minutes is enough for a loin roast. A large roast can rest up to 10 minutes under foil.

When you slice, cut across the grain into pieces about half an inch thick. This shortens the muscle fibers and makes each bite easier to chew.

Storing And Reheating Leftovers

Leftover pork loin keeps in the fridge for 3 to 4 days. Store it in a sealed container.

Reheat gently in a covered pan with a splash of broth. High heat will dry it out fast. You can also eat it cold in sandwiches or salads.

Quick Recap

Cook pork loin at 350°F in the oven and pull it at 145°F internal. Let it rest a few minutes, then slice against the grain.

That is the whole formula. Get a thermometer, watch the temp, and you will never serve dry pork again.

What Temp To Cook Pork Loin