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Barometric pressure is the weight of an overlying air mass in a particular area. Itâs synonymous with atmospheric pressure. Meteorologists monitor barometric readings to predict weather changes; shifts in the barometer can indicate the approach of a high-pressure (usually fair-weather) or low-pressure (more unsettled) system.
Best Answer: Barometric readings show what the barometric pressure or air pressure is. Air pressure is the force exerted on you by the weight of tiny particles of air. Barometers are used to measure the current air pressure at a particular location in inches of mercury or in millibars (mb). A measurement of 29.92 inches of mercury is equivalent to 1013.25 millibars. Air pressure can tell us about what kind of weather to expect as well. If a high pressure system is on its way, often you can expect cooler temperatures and clear skies.