Barometric Pressure in Waterloo, United States 
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The pressure in Waterloo, Illinois, United States is predicted to rise over the next few hours, with an average pressure of 991.7 hPa today, which is lower than normal.
Weather prediction: Expect fair, dry, cool weather and a strong breeze
The daily total fluctuation in pressure in Waterloo is 4.1 hPa, with a low of 989.3 hPa and a high of 993.4 hPa.
Forecast
Hourly Pressure Trends
Track the barometric pressure in Waterloo hour by hour and stay informed about how it will change over the next 6 hours.
Waterloo, Illinois has changing air pressure due to its location in the Midwest. The city's flat plains allow winds to move freely, causing pressure changes. In summer, high pressure brings warm, sunny days. In winter, low pressure brings cold, snowy weather. Waterloo has a humid continental climate, with big temperature differences between seasons, affecting air pressure.