Barometric Pressure in Collinsville, United States 
1015.3 hPa
17.5 ℃
63%
5.1 m/s
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The average pressure in Collinsville, Illinois, United States today is , which is considered normal. Pressure is trending falling.
Weather prediction: Rain at frequent intervals
The daily total fluctuation in pressure in Collinsville is , with a low of and a high of .
Forecast
Hourly Pressure Trends
Track the barometric pressure in Collinsville hour by hour across the next 6 hourly readings.
Barometric pressure in Collinsville, Illinois is influenced by the city's location in the Midwestern United States. Weather patterns from the Gulf of Mexico and the Arctic Circle collide in the region. This mix of cold and warm air masses causes frequent changes in atmospheric pressure.
Collinsville is situated in a valley near the Mississippi River. The surrounding landscape is relatively flat, with rolling hills and plains. This topography allows winds to flow freely, contributing to fluctuations in barometric pressure. The proximity to the river also plays a role, as moisture from the water can influence local weather patterns.