Barometric Pressure in Algonquin, United States 
1020.2 hPa
16.7 ℃
54%
2.89 m/s
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The average pressure in Algonquin, Illinois, United States today is , which is considered normal. Pressure is trending rising.
Weather prediction: Fairly fine, improving
The daily total fluctuation in pressure in Algonquin is , with a low of and a high of .
Forecast
Hourly Pressure Trends
Track the barometric pressure in Algonquin hour by hour across the next 6 hourly readings.
Algonquin, Illinois, sits in the open Fox River valley, where weather systems can move across the region without mountain barriers. Air pressure often rises behind cold fronts and falls ahead of storms. These shifts can bring quick changes in wind direction and temperature.
The Fox River and nearby low, gently rolling land shape local winds only slightly; they do not block large weather systems. Algonquin is far enough inland that Lake Michigan usually has a smaller effect than it does near the shore, though lake air can sometimes reach the area.
Winters are cold, with snow arriving when moist air meets passing systems; spring brings frequent fronts and changeable rain. Summers are warm and humid, with pop-up storms, while autumn often turns cooler and drier. Pressure systems pass through in every season, changing winds and storm chances.