# Quick Answer: How High Can You Go Before You Need Oxygen?

## Can you breathe 15000 feet?

Sea level to 10,000 feet cabin altitude — no problem.

Above 10,000 feet cabin altitude — most of us will go unconscious above 15,000 to 20,000 feet.

Above 10,000 feet, with the yellow emergency oxygen mask the airlines provide (or any supplemental oxygen supply not provided under pressure) — no problem..

## Is there oxygen at 35000 feet?

You might already know that ‘breathable’ air is in short supply at the altitude where most commercial planes operate. … In other words, there’s ample air at 35,000 feet, and there is sufficient oxygen in it. In fact, there’s even a reasonable amount of air at the altitude where the International Space Station operates!

## How cold is it at 24000 feet?

Standard atmospheric pressure at sealevel = 29.92 inches of Hg. Temperature — As air is warmed, it expands and thus has a lower density. Hot air rises, which is what keeps hot-air balloons up, and cold air sinks. Standard atmospheric temperature at sealevel = 59.0°F.

## Can you breathe at 20000 feet?

It is the lack of oxygen rather than the reduced air pressure that actually limits the height at which we can breathe. An elevation of about 20,000 feet above sea level is the maximum height at which sufficient oxygen exists in the air to sustain us.

## Can you breathe at 35000 feet?

Whether you are flying aboard a small Cessna or a jumbo-sized Airbus A380, you can breathe freely inside the cabin without wearing a mask or respirator. Even at a cruising altitude of 35,000 feet, you shouldn’t have trouble breathing.

## Can a human survive at 35000 feet?

Its very likely that the brain will be alive for the entire duration as it only takes 4 minutes to fall 35,000 feet. Losing consciousness is certain within 30 seconds (maybe less) due to the stress of the event and not enough oxygen in the air at that height.

## Can planes fly at 50000 feet?

Normally, passenger jets or airplanes, fly can fly at an altitude, maximum of 42000 feet. Currently, no passenger airplanes are “able” to fly at 50,000 feet or above. Because, at these altitudes, air density is very low, which wouldn’t sustain the heavy weight of the passenger aircrafts.

## How hard is it to breathe at 14000 feet?

At 14,000 ft, the air has 43% less oxygen than at sea level. Because of the reduced air pressure at high altitude, the volume of air you breathe into you lungs contains less oxygen molecules in each breath.

## Why do planes fly at 38000 feet?

Due to lower resistance at higher altitudes, commercial airplanes can keep moving forward with minimal fuel expenditure. Commercial airplanes typically fly between 32,000 feet and 38,000 feet, with the sweet spot being approximately 35,000 feet, which is popularly referred to as cruising altitude.

## What altitude is safe without oxygen?

26,000 feet26,000 feet (8,000 meters) is the official ‘Death Zone’ where severe altitude sickness occurs without the use of supplemental oxygen. The body begins shutting down, eventually leading to death.

## At what altitude does breathing become difficult?

The higher the elevation, the more difficult breathing becomes. According to the Cleveland Clinic, heights above sea level are categorized as follows: high altitude: 8,000 to 12,000 feet (2,438 to 3,658 meters) very high altitude: 12,000 to 18,000 feet (3,658 meters to 5,486 meters)

## How cold is it at 35000 feet?

about -54CHow cold is it up there? The higher you get, the colder it gets, up until 40,000 feet. If the temperature at ground level was 20C, at 40,000 feet it would be -57C. At 35,000 feet the air temperature is about -54C.

## Do airplanes get fresh air?

Most airplanes get fresh air from their jet engines. Like automotive engines, the jet engines used in airplanes require air. … The compressed fresh air travels to the airplane’s air conditioning unit where it’s cooled, after which it’s released through the vents.

## How can I increase my breathing at high altitude?

Once you’ve mastered the belly breath, you can add resistance to your exhalation by pursing your lips and exhaling forcefully, and this is what mountaineers call the Pressure Breath. This is one of the most important breaths for climbing at high altitudes and helps combat the decrease in atmospheric pressure.

## At what altitude do you run out of oxygen?

It refers to altitudes above a certain point where the amount of oxygen is insufficient to sustain human life for an extended time span. This point is generally tagged as 8,000 m (26,000 ft, less than 356 millibars of atmospheric pressure).

## Can you breathe at 40000 feet?

Somewhere between 30,000 and 40,000 feet the pressure around you becomes far too low to push those oxygen molecules across the membranes in your lungs, and you get hypoxic (altitude sickness). If you try to breathe 100 percent oxygen above 40,000 feet for very long without a special type of mask, you’ll die.

## What helps breathing at high altitudes?

The medication acetazolamide can reduce symptoms of altitude sickness and help improve labored breathing. You may also be given the steroid dexamethasone. Other treatments include a lung inhaler, high blood pressure medication (nifedipine), and a phosphodiesterase inhibitor medication.

## What makes you hard to breathe?

Many conditions can make you feel short of breath: Lung conditions such as asthma, emphysema, or pneumonia. Problems with your trachea or bronchi, which are part of your airway system. Heart disease can make you feel breathless if your heart cannot pump enough blood to supply oxygen to your body.

## What percent oxygen is dangerous?

An oxygen level below 88% can be dangerous for any period of time. An oxygen level below 85% warrants a trip to the hospital. Keep in mind that an oxygen level 80% and lower puts your vital organs in danger, so it is important to keep a blood oxygen level chart handy so you know what levels require immediate treatment.

## Do planes fly over Everest?

Airplanes often avoid air paths that take them over Mt Everest or the Pacific Ocean. … This is because “the Himalayas have mountains higher than 20,000 feet, including Mt Everest standing at 29,035 feet. However, most commercial airplanes can fly at 30,000 feet.”

## Is there breathable air at 30000 feet?

At 30,000 feet, while trying to breathe, “the air in their lungs… would expand so quickly they would, for lack of a better term, explode,” Kring says.