Why can’t the atmospheric pressure be calculated using the formula P = pgh?

Very simply, I tell you: in the formula P = ρgh, preference is given to the density of water, rather than the density of atmospheric pressure. Due to the fact that the height at which the body is located has a very large effect on the pressure density, it has the ability to either increase its density or decrease it. In addition to altitude, various types of atmospheric phenomena also affect density, be it rain, heat, snow, etc.