Air pressure is highest at sea level. The layer of air that scientists can measure with reasonable accuracy extends around 25 miles up, according to LiveScience. The pressure applied by the atmosphere on normal body is atmospheric pressure.Generally we can say it 1 atm =760mm of Hg or 760 torr.

At a height of 5 km it is approximately half the value at the earth’s surface. Air pressure is also known as barometric pressure, which is measured by barometers. The highest barometric pressure ever recorded was 32.01 inches. Atmospheric pressure definition, the pressure exerted by the earth's atmosphere at any given point, being the product of the mass of the atmospheric column of the unit area above the given point and of the gravitational acceleration at the given point. Standard atmospheric pressure is 101.325 kPa. Air pressure is lower at high altitudes, where there is less air pushing down. Barometric pressure — also known as atmospheric pressure — describes the weight of the air surrounding the earth.

The portion of the atmosphere that sustains life only extends for three miles. Normal atmospheric pressure is considered to be 760 mm Hg = 1,013.25 mbar = 101,325 N/m 2. The lowest known barometric pressure was recorded over the Pacific Ocean during a typhoon on … As we go above the earth surface normal atmospheric pressure decreases and vice versa. See more. Atmospheric pressure at the earth’s surface varies from place to place and with time. It can also be quoted as 760 mm Hg, or 14,696 psi.

This reading was taken in Agata, Siberia, on December 31, 1968, during clear and extremely cold weather. What Is Barometric Pressure. Air pressure within Earth’s atmosphere changes frequently but always falls within a set range.

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