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Atmospheric pressure is not the same everywhere on Earth. Atmospheric pressure depends on the altitude (or height) of your location.  Many places on Earth are at sea level, which has an atmospheric pressure of 1 kilogram per square centimeter (14.7 pounds per square inch). The higher up we go, the less air pressure we will encounter. For example, Denver, Colorado is about 1.6 kilometers (1 mile) above sea level. The atmospheric pressure of Denver drops to 0.85 kilograms per square centimeter (12 pounds per square inch) at this altitude.