How is station pressure determined in relation to barometric pressure?

Station pressure is measured at a specific elevation, which means that the altitude at which the pressure measurement is taken must be accounted for to ensure accuracy. This is done by compensating for the height of the barometer compared to the designated station elevation.

When meteorologists or aviators refer to "station pressure," they are often discussing the pressure adjusted to the actual elevation of the station where the measurement is taken. This adjustment is necessary because air pressure decreases with an increase in altitude. Therefore, the pressure recorded at a weather station at a higher elevation will inherently be lower than that at sea level due to the thinner atmosphere above it.

By compensating for this height difference, the measurement reflects the actual atmospheric pressure at the station's specific elevation, providing a more accurate depiction of the weather conditions being monitored.