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Humidity Soars in the Central U.S.
This week, the central United States is experiencing a heat wave with rapidly rising humidity levels. While high temperatures are normal for this region in the summer, this particular spell is feeling even more intense than usual. One surprising reason for this is the vast fields of corn found across the area.
Corn’s Surprising Impact on Weather
Corn fields actually play a big role in increasing humidity during hot weather. Farmer Mark Baker explains that each acre of corn can release about 4,000 gallons of moisture into the air every day. This process, sometimes called “corn sweat,” makes the air more humid and increases the AccuWeather RealFeel® Temperature, making hot days feel even hotter.
“Corn Sweat” vs. Other Plants
The effect of corn on humidity is far more pronounced than that of most other plants. For example, a large oak tree typically adds about 100 gallons of water to the air each day—significantly less than an acre of corn. As a result, stepping out of a cornfield into open air can feel noticeably cooler and less stifling.
RealFeel® Temperatures Soar
Because of “corn sweat,” AccuWeather RealFeel® Temperatures are expected to exceed 100 degrees in many Corn Belt states, such as Iowa, Illinois, Indiana, and Missouri. This means the weather will feel much hotter than the thermometer suggests, especially near cornfields.
The Trend Continues Until Harvest
The amplified heat and humidity from corn fields will persist until harvest season in early autumn. Until then, people living in and around the Corn Belt can expect heat waves to feel even more uncomfortable when “corn sweat” is at its peak.
