Is the barometerPressure that is returned by the HERE Destination Weather API corrected to mean sea-level pressure (MSLP)?
The description that is given doesn't seem to indicate if this is a corrected or uncorrected value.
Barometric pressure in mbar/in. If the element is in the response and it contains a value, there is a Double in the String. If the element is in the response and it does not contain a value, there is an asterisk (*) in the String.