What is the standard atmospheric pressure at sea level?

The standard atmospheric pressure at sea level is defined as 14.7 pounds per square inch (psi). This value is a key reference point in various fields, including meteorology, aviation, and engineering. It represents the pressure exerted by the weight of the atmosphere above a surface at sea level, and it is critical for understanding how pressure changes with altitude and weather systems.

This standard is widely recognized and often used in calculations involving gases and fluids, making it a fundamental concept in both scientific study and practical applications. Knowing this value allows professionals to account for pressure variations in different conditions and ensures consistency in measurements and calculations across various disciplines.