There has been some discussion on Tripadvisor about early fall colors. According to the fall color report Madison is currently at about 15%. That seems accurate to me, but some areas have really nice color as can be seen by our hike in the UW Arboretum today!
http://www.travelwisconsin.com/fall-color-report
UW Madison arboretum 9/21/14
Sumac in Curtis Prairie UW Madison arboretum 9/21/14
Sumac in Curtis Prairie UW Madison arboretum 9/21/14
Curtis Prairie UW Madison arboretum 9/21/14
UW Madison arboretum 9/21/14
Longnecker garden UW Madison arboretum 9/21/14
Sumac in Curtis Prairie at UW Madison Arboretum 9/21/14