rising air pressure
constant air pressure
falling air pressure
Two examples:
Weather forecast shows rain, the air pressure is falling
off quickly and steeply >> strong rain is probable.
Weather forecast shows rain, the air pressure has risen
in the last 12 hours but in the last 3 hours as fallen off
somewhat >> light rain is probable.
Temperature and humidity trend
For the temperature and humidity values measured by the
base station and wireless sensor, the trend is displayed in
the form of an arrow:
rising
constant
falling
Air pressure indicator
Furthermore, an air pressure histogram for the last
24 hours is displayed.
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The currently prevailing air pressure is
displayed in the chosen unit (usually: hPa
= hectopascals).
Weather Station with Wireless Outdoor Sensor WS 1600