Air Fryer Pork Tenderloin: Juicy at 400°F

Air fryer pork tenderloin cooks at 400°F (204°C) in about 16 to 22 minutes, producing a deeply browned exterior and a juicy center. Because tenderloin is lean, a few extra minutes can dry it out. Start checking the center at 14 minutes and use 145°F (63°C)—not a fixed time—as the finish line.

Recipe at a glance

• Prep time: 10 minutes
• Cook time: 16 to 22 minutes
• Rest time: at least 3 minutes; 5 minutes recommended
• Total time: about 37 minutes
• Temperature: 400°F (204°C)
• Yield: 4 servings
• Safe internal temperature: Reach 145°F (63°C) in the thickest center, then rest at least 3 minutes. Reheat leftovers to 165°F (74°C).

Exact ingredients

• 1 pork tenderloin, 1.25 to 1.5 pounds (567 to 680 g)
• 1 tablespoon olive oil
• 1 tablespoon Dijon mustard
• 1 teaspoon kosher salt
• 1 teaspoon smoked paprika
• 1 teaspoon garlic powder
• 1/2 teaspoon onion powder
• 1/2 teaspoon coarsely ground black pepper
• 1/2 teaspoon dried thyme

Pork tenderloin is the long, narrow cut. It is not the same as a wide pork loin roast, which needs a different cooking time. The Dijon does not make the finished pork strongly mustard-flavored; it forms a thin layer that helps the seasoning adhere and brown.

Trim and season the tenderloin

1. Do not rinse the pork. Open the package and thoroughly blot the surface with paper towels. Washing raw meat can splash bacteria around the sink and nearby surfaces.
2. Slide a thin, sharp knife under the tough white silver skin. Angle the blade slightly upward and trim it away while preserving as much meat as possible. A little soft fat can remain.
3. If one end is very thin, fold about 2 inches (5 cm) underneath so it matches the body in thickness, then secure it with cotton kitchen twine. Even thickness helps the center cook before the tip dries out.
4. Rub the olive oil and Dijon over every side. Combine the salt, smoked paprika, garlic powder, onion powder, pepper and thyme, then press the blend evenly onto the pork.

How to air fry pork tenderloin at 400°F

1. If your manufacturer recommends preheating, preheat the air fryer to 400°F (204°C) for 3 minutes.
2. Place the seasoned tenderloin lengthwise in the center of the basket. If it is too long, curve it gently without pressing it against the wall; do not cut it in half. Leave about 1 inch of open space around it for airflow.
3. Cook at 400°F for 8 minutes, then turn it with tongs. Cook 6 minutes more and insert an instant-read thermometer sideways into the thickest center.
4. If it has not reached 145°F (63°C), continue in 2-minute increments, checking after each interval. A 1.25- to 1.5-pound tenderloin generally needs 18 to 22 minutes total.
5. At 145°F, transfer the pork to a clean cutting board. Tent loosely with foil and rest at least 3 minutes, or 5 minutes for better juice retention. The temperature may rise a few degrees while it rests.
6. Slice against the grain into 1/2-inch (1.3-cm) medallions. Spoon any resting juices over the pork and serve.

Weight-based temperature and time chart

These times are starting points. Air fryer wattage, the pork’s starting temperature, its thickest diameter and basket crowding all affect the result. If cooking two tenderloins of different sizes, test each one and remove the smaller piece first.

How to check the temperature correctly

Insert an instant-read thermometer horizontally from the side toward the thickest center. This makes it easier for the probe to cross the center of a narrow tenderloin. Check two spots rather than measuring only the tapered end or the side that touched the basket. USDA guidance for whole cuts of pork is 145°F followed by at least a 3-minute rest. Safely cooked pork can remain slightly pink, so color is not a reliable doneness test.

Five keys to browned, juicy pork

• Dry the surface: Moisture creates steam instead of browning. Blot thoroughly before applying oil and seasoning.
• Tuck the thin end: Folding the tip underneath reduces the difference in cooking speed from one end to the other.
• Leave basket space: Wrapping the pork in foil or crowding it against the wall blocks hot-air circulation and softens the crust.
• Finish by temperature: The clock provides an estimate; 145°F provides the stop signal. Taking lean tenderloin to 160°F before resting can make it dry.
• Rest before slicing: Cutting immediately releases more juice onto the board. Wait at least 3 minutes, then slice across the grain.

Serving ideas and related recipes

For a maple-mustard finish, mix 1 tablespoon Dijon with 1 tablespoon maple syrup and brush it on during the final 2 minutes. A sugary glaze can scorch at 400°F if applied at the beginning. Lemon green beans, a crisp salad or mashed potatoes turn the pork into a balanced dinner.

For a bone-in pork cut, use the separate air fryer pork chops guide. Other easy proteins include crispy air fryer chicken drumsticks and juicy air fryer salmon. Air fryer butternut squash makes a natural fall side dish.

Storage and reheating

Refrigerate leftover pork in a shallow airtight container within 2 hours and use it within 3 to 4 days. For longer storage, cool it completely, package meal-size portions with their juices and freeze for 2 to 3 months. Thawing overnight in the refrigerator minimizes moisture loss.

Arrange slices in a small oven-safe dish without piling them up. Add 1 tablespoon broth or water, cover loosely with foil and air fry at 350°F (177°C) for 3 to 5 minutes. A larger unsliced piece may need 6 to 9 minutes. Turn halfway through and verify 165°F (74°C) in the center. Reheat only the portion you plan to eat because repeated heating dries lean pork.

Frequently asked questions

Are pork tenderloin and pork loin the same cut?

No. Tenderloin is a long, narrow cut that usually weighs 1 to 1.5 pounds. A pork loin roast is much wider and heavier. This temperature and chart are for tenderloin; using them for a large loin could leave its center undercooked.

Is pork tenderloin safe at 145°F?

Yes. USDA advises cooking pork steaks, chops and roasts to 145°F in the center followed by at least a 3-minute rest. Ground pork has a separate 160°F (71°C) minimum.

Can the center still be slightly pink?

Yes, if an accurate thermometer confirmed 145°F and the pork rested at least 3 minutes. Do not rely only on meat color, juice color or firmness to judge safety.

Can I season it in advance?

You can apply the dry seasoning up to 24 hours ahead, cover and refrigerate. Take it out only 15 to 20 minutes before cooking, and never leave raw pork at room temperature for more than 2 hours.

Can I air fry pork tenderloin from frozen?

Refrigerator thawing gives the most even result. For faster thawing, seal it in a leakproof bag, submerge in cold water and change the water every 30 minutes, then cook immediately. Do not thaw pork on the counter or in warm water.

Can I line the basket with foil?

If your air fryer manufacturer permits it, a small piece can sit directly beneath the food. Do not cover the vents, which weakens browning, and always weigh foil down with food so it cannot blow into the heating element.

Food-safety references

• USDA FSIS: Pork From Farm to Table
• FoodSafety.gov: Safe Minimum Internal Temperatures
• FoodSafety.gov: Cold Food Storage Charts

Air fryers vary in actual temperature and fan strength. For the first batch, begin checking before the chart’s minimum time and follow your appliance manufacturer’s safety instructions.