The change in barometric pressure may have a number of implications for the weather.
Typical barometric pressure range for sea level: 28 to 31 inches of mercury (711 to 787 mm Hg), with 29.92 inches (760 mm) indicating 1 atmosphere.
Barometric Pressure
Change in Air Column
Associated Weather
high
downwards and warms
good
low
upwards and cools
bad
A rapid rise or fall in barometric pressure is associated with high winds.
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Specialty: Emergency Medicine, Critical Care