Barometric Pressure in Chicago, Illinois, US

The pressure in Chicago, United States is predicted to steady rise over the next few hours, with an average pressure of 1005.9 hPa today, which is lower than normal.

Weather prediction: Continued current weather

The daily total fluctuation in pressure in Chicago is 7.8 hPa, with a low of 1001.5 hPa and a high of 1009.3 hPa. The daily average here is lower than in most cities around the world.

Forecast

• Low Pressure
• Normal Range
• High Pressure

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.

Disclaimer

* 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.