Barometric Pressure -

, also known as atmospheric pressure, is the force exerted by the weight of the air in Earth's atmosphere at a given point. Because air has mass, gravity pulls it toward Earth, creating pressure on everything it touches. Standard Sea-Level Values

At sea level, the average barometric pressure is defined as . This standard is equivalent to: 29.92 inches of mercury (inHg) 1013.25 millibars (mb) or hectopascals (hPa) 760 millimeters of mercury (mmHg or torr) 14.7 pounds per square inch (psi) Key Influencing Factors What is Barometric Pressure? - Setra Systems barometric pressure