Barometers measure air pressure, sometimes explained as the
weight of the air pressing down on the earth. This pressure
helps determine upcoming weather, and aids in forecasting
weather trends. When the barometric pressure is high, it
inhibits clouds and rain from forming, leading to generally fair
weather. Low barometric pressure allows clouds to form, leading
to precipitation of many kinds and poor weather. Barometers
often use water in a spout to determine the air pressure; in a
basic barometer, if the water level is low, the air pressure is
high, whereas if the water is high in the spout, air pressure is
low. More advanced barometers use antennas and internal
measurements to determine the air pressure, and whether it is
rising, falling, or remaining steady. For more information on
barometric pressure, be sure to check out our Newsletter
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