Barometric Pressure in Harvard, United States 
1013 hPa
15.0 ℃
50%
3.0 m/s
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Forecast
Hourly Pressure Trends
Track the barometric pressure in Harvard hour by hour across the next 6 hourly readings.
Harvard, Illinois has a humid continental climate, which means big temperature differences between summer and winter.
In summer, warm air rises, making air pressure low. This leads to humid and stormy weather. In winter, cold air sinks, making air pressure high. This brings dry and cold air.
The city's flat geography allows winds to move freely, making air pressure changes more noticeable. Harvard's location in the Midwest also means it's affected by cold Arctic air from Canada and warm air from the Gulf of Mexico.
During winter, Harvard's air pressure is usually high due to cold air dominating. In spring and fall, pressure is more balanced as warm and cold air mix. In summer, pressure is generally low due to warm air rising.