The Midwest is currently experiencing dangerously high temperatures exacerbated by a phenomenon known as 'corn sweat,' where corn and other crops release significant amounts of water vapor through evapotranspiration. This process increases humidity levels, making already high temperatures feel more oppressive and potentially breaking temperature records. States like Iowa and Illinois, major corn producers, are seeing the most significant impact. The addition of moisture from crops to the atmosphere, combined with high-pressure systems blocking cooler weather, has led to extreme heat indices. The situation underscores broader climate issues, with heatwaves becoming more frequent and severe due to climate change.