Ambient Weather Support

You will want to calculate your barometric pressure to an official reporting station in your area.  Since barometric pressure does not drastically change in a 50 mile radius (unless the weather is rapidly changing), this method of calibration is acceptable.

To determine the relative pressure for your location, locate an official reporting station near you using Ambientweather.net/baro , and set your weather station to match the official reporting station.

To calibrate the relative pressure, you must be in the SET Mode. To enter the SET mode, press and hold the SET button for two seconds. Refer to the table below.

Note that it is the second of the pressure settings. The first changes the pressure units of measure, the second is the relative pressure calibration. It is a common mistake to confuse the two settings.

When the relative pressure is flashing, press the TEMP/+ button to increase the barometer value and BARO/- to decrease the barometer value from the official source.