... STATION ! MONITOR WINDSPEED, TEMPERATURE, WINDCHILL, BAROMETRIC PRESSURE, RELATIVE HUMIDITY AND HEAT INDEX DEWPOINT ! FORECAST ... relative humidity* dew point* heat index* barometric pressure and upcoming storms.* Altitude(Model 8910)0,-2h,- ... slowly moving air at 25Operating Temperature-40 to 85Atmospheric Pressure Functions:Modes:Atmospheric Pressure ScaleshPa ( millibar ), or inches of mercury ( ...