Corn Sweat Intensifies Midwest Humidity During Summer Heat Waves
Corn Sweat Intensifies Midwest Humidity During Summer Heat Waves
US · Published Jul 29, 2026
The Midwest is experiencing heightened humidity levels due to a phenomenon known as 'corn sweat,' which is the informal term for evapotranspiration.
This natural process occurs when corn plants absorb water from the soil and release it as water vapor through tiny pores in their leaves.

Impact & Risks

The increased humidity caused by corn sweat primarily affects residents of the Midwest, where large-scale corn farming is prevalent. The added moisture in the air can make already high temperatures feel even hotter, increasing the risk of heat-related illnesses such as heat exhaustion and heatstroke. Vulnerable populations, including the elderly, children, and those with pre-existing health conditions, are particularly at risk. Outdoor workers and individuals without access to air conditioning may also face heightened discomfort and health risks during these conditions.

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