Barometric Pressure in Philadelphia, United States 
0000 hPa
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The pressure in Philadelphia, Pennsylvania, United States is predicted to slowly drop over the next few hours, with an average pressure of 1021.1 hPa today, which is considered normal.
Weather prediction: Expect more wet and unsettled conditions
The daily total fluctuation in pressure in Philadelphia is 5.2 hPa, with a low of 1017.4 hPa and a high of 1022.6 hPa.
Forecast
Hourly Pressure Trends
Track the barometric pressure in Philadelphia hour by hour and stay informed about how it will change over the next 6 hours.
The barometric pressure in Philadelphia varies throughout the year. It is influenced by the city's location on the East Coast. Pressure systems from the Atlantic Ocean and the Gulf of Mexico have an impact on the city. The pressure changes can bring different weather patterns to the area.
Philadelphia is surrounded by water and land. The Delaware River borders the city to the south and west. The Appalachian Mountains are to the west and northwest. The Atlantic Ocean is to the east. The combination of these geographic features affects the atmospheric pressure.
The landscape around Philadelphia contributes to the pressure changes. The ocean and mountains force air masses to rise or sink. This rising and sinking air changes the pressure. As a result, Philadelphia experiences a variety of weather conditions.