Barometric Pressure in Swansea, United States 
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The pressure in Swansea, Illinois, United States is predicted to rise over the next few hours, with an average pressure of 991.3 hPa today, which is lower than normal.
Weather prediction: Expect fair, dry, cool weather and a strong breeze
The daily total fluctuation in pressure in Swansea is 3.8 hPa, with a low of 988.9 hPa and a high of 992.7 hPa.
Forecast
Hourly Pressure Trends
Track the barometric pressure in Swansea hour by hour and stay informed about how it will change over the next 6 hours.
The weather in Swansea, Illinois affects barometric pressure by changing it frequently. Pressure drops before storms and rises after they pass. This change helps predict weather forecasts.
Swansea's elevation is about 560 feet above sea level. Its flat landscape allows air to move freely, causing pressure to fluctuate easily. This makes pressure changes more noticeable.
In winter, pressure is usually high, bringing cold and clear skies. In summer, pressure is low, leading to warm and humid air. Spring and autumn bring moderate pressure and mild weather.
Swansea has a humid continental climate, which means big pressure changes occur throughout the year. This causes varying weather conditions, from cold and snowy to hot and humid.