Why the atmospheric pressure at Mumbai is higher than Mt. Everest?

Atmospheric pressure is higher in Mumbai than on Mount Everest because pressure decreases with elevation in the atmosphere. Mumbai is at sea level, where the weight of the air above exerts greater pressure, while Mount Everest, at over 8,848 meters, has much less air above it, resulting in lower pressure. Additionally, the density of air decreases with altitude, contributing to the significant difference in atmospheric pressure between the two locations.