Finally I've had some change in scenery. Missouri has more hills and greenery (or rather trees changing colors), than western Iowa did.
Once I reached Kansas City area I noticed a definite change in humidity levels. Just east of Kansas City the sun disappeared behind a foggy haze. It continued until almost right before St Louis, and then the fog disappeared and the sun came out again.
I went through Warrenton, MO and noticed a distinct smell of Onions. I'm ready to be done with my trip. Now that I'm so close, I kind of just want to get there.