Barometric Pressure in Chicago, United States 
0000 hPa
00.0 ℃
00.0%
00.0 m/s
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The pressure in Chicago, Illinois, United States is predicted rising over the next 24 hours, with an average pressure of today, which is lower than normal.
Weather prediction: Fine, possible showers
The daily total fluctuation in pressure in Chicago is , with a low of and a high of .
Forecast
Hourly Pressure Trends
Track the barometric pressure in Chicago hour by hour and stay informed about how it will change over the next 6 hours.
Upcoming Days
Stay informed about the barometric pressure trends in Chicago for the upcoming days, including daily minimum and maximum readings.
Barometric pressure in Chicago ranges from 29.8 to 30.4 inches. This is slightly above the national average. The pressure is highest in winter. It is lowest in summer.
Chicago is located on the southwestern shore of Lake Michigan. The lake is large and shallow. It has a significant effect on the city's weather. The lake maintains a steady temperature. This temperature affects the air above it.
The surrounding landscape is flat and low-lying. There are no mountains or hills nearby. This allows winds to blow freely. The winds come from Canada and the Gulf of Mexico. They bring different air masses to the city.
Cold air from Canada brings cold temperatures and low pressure. Warm air from the Gulf brings warm temperatures and high pressure. The clash of these air masses creates changing weather patterns.