What is the average barometric pressure in Chicago?

Chicago’s range of barometric extremes spans 2.28 inches of mercury from the city’s highest reading of 30.98 inches recorded Feb. 16, 1989, to the lowest of 28.70 inches on March 12, 1923. That range, while substantial, is only about a third of the world’s range of 6.37 inches.

Does Chicago have high or low air pressure?

Although Chicago’s barometric pressure does not routinely drop that low, readings below 29.10 have occurred in Chicago on numerous occasions. The last time was nearly seven years ago with a reading of 29.01 inches on Dec.

What is normal barometric pressure?

Normal pressure at sea level is 1013.3 millibars or 29.92 inches of mercury. Fluctuations in barometric pressure are usually a sign of weather conditions. A rise in pressure usually means improving weather while falling pressure may reflect impending inclement weather.

What was the barometric pressure in Chicago yesterday?

Chicago Weather History for the Previous 24 Hours

Time Temp Barometer
1:53 pm 65 °F 29.80 “Hg
12:53 pm 65 °F 29.82 “Hg
11:53 am 64 °F 29.85 “Hg

Can barometric pressure cause nausea?

Barometric pressure headaches occur after a drop in barometric pressure. They feel like your typical headache or migraine, but you may have some additional symptoms, including: nausea and vomiting. increased sensitivity to light.

What is considered high barometric pressure?

Hg. A barometer reading of 30 inches (Hg) is considered normal. Strong high pressure could register as high as 30.70 inches, whereas low pressure associated with a hurricane can dip below 27.30 inches (Hurricane Andrew had a measured surface pressure of 27.23 just before its landfall in Miami Dade County).