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Barometric Pressure in Chicago, Illinois, US


0000 hPa
00.00 inHg


00.0 ℃
0.00 ℉


00.0 m/s
00.0 mph


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The pressure in Chicago, United States United States is predicted to slowly rise over the next few hours, with an average pressure of 1019.1 hPa today, which is considered normal.


Weather prediction: Expect more fair, dry, cool weather

The daily total fluctuation in pressure in Chicago is 2.2 hPa, with a low of 1018 hPa and a high of 1020.2 hPa. The daily average here is higher than in most cities around the world.



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.

Barometric pressure

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.


* The barometric pressure information for Chicago, Illinois, United States on this page is for educational purposes only. We are not responsible for its accuracy or reliability. This information is not medical advice. Consult a health professional for medical concerns and do not rely on this site for medical decisions.