Heat and humidity effectors
In more rural areas, humidity and heat index values could feel even higher due to crops being produced here. This is through a process called evapotranspiration, or something that's a little easier to say, corn sweat. When corn draws in water from the ground, it goes through its system and releases the excess on their leaves through pores called stomata. This is essentially the sweat of the plant, thus the name. All plants do this, but with how large corn as a singular plant is, it affects humidity more than other crops.
We all know blacktop can get hot, but if an entire area is covered by pavement, what does that do to the temperature? This effect is called the urban heat island, the idea that more developed areas don’t have a great way to diffuse heat, thus can get hotter than more natural areas. A lot of man-made structures have materials that are good at absorbing heat and remitting it, whereas more natural areas are better at reflecting the energy we get from the sun, all the heat energy being reemitted can increase temperatures over 5 degrees in some areas. A great way to mitigate these effects is more green spaces in urban areas.