Its Helicopter Emergency Medical Service responds to patients who have suffered trauma or serious medical emergencies 24 hours a day.
The skydive takes place on Saturday, August 25, across Salisbury Plain.
Nathan said: “I can confirm that I will be paying the £225 jump cost myself and no donations will be used to pay for me to complete my skydive.
“I want to raise as much money for the charity as I can. I became a volunteer for the air ambulance to give back some of my time and work to an important charity that saves lives.”
Nathan will attempt the skydive just four days after his 16th birthday.