It depends, normally everyone reports baro as the equivalent sea level value regardless of their actual elevation ASL, in other words unless the barometer is at sea level the reported value will be higher than the measured value (unless it’s below sea level in Death Valley in which case it will be lower than the measured value). If your airport number is a sea level number then that’s the same number you would want to display, if it’s not a sea level number then you would have to do some calculation.
What airport (so I can look at its data)?