Would we call it air pressure, more likely to be water pressure.
The pressure down there is a staggering 15,966 pounds (7.24 metric tonnes) per square inch, or roughly 1,086 times the pressure we live with at sea level. The Temperature down there is 27°F (-3°C), it is kept liquid by the amount of pressure from all the water above.
The pressure in the deepest parts of the ocean can be over 1000 times greater than the usual air pressure you experience at the surface. This immense pressure is caused by the weight of the water above pushing down on the seabed.
The pressure in the deepest part of the ocean, such as the Mariana Trench, can reach over 1,000 times the usual air pressure at sea level, which is about 101.3 kPa (kilopascals). This means the pressure at such depths can exceed 1,000 atmospheres. Such extreme pressure conditions create a unique environment that few organisms can survive.
Water pressure increases with depth, so the deepest spot in the ocean is probably the location of the greatest water pressure. The Marianas trench is the deepest place (10,911m) and the pressure is 108.6 MPa. For a comparason, the standard sea-level air pressure is only 101.325 kPa, or about 1000 less.
1-2% in the deepest part
At the bottom of the Mariana Trench (Pacific Ocean), where water pressure is about eight tons per square inch.
The pressure at the bottom of the ocean can be determined by the formula P = dgh, where d = 1025 kg per cubic meter, g is the acceleration due to gravity and h is the depth of the water in meters. At the bottom of the Marianas Trench (11034 meters), the pressure would be 1.11 E5 kPa, or 1095 times normal air pressure at sea level.
air pressure over the ocean is higher than air pressure over the land!
The higher parts
The deepest low pressure systems in the US typically form in the central Great Plains region, known as "Tornado Alley." This area experiences a collision of warm, moist air from the Gulf of Mexico and cold, dry air from the north, creating conditions for intense low pressure systems to develop.
air pressure
No air to breath and the pressure would be to great.
air pressure