Fall foliage can change instantly in Vermont, which is why knowing when and where peak season will occur is key to a great leaf-peeping season.

More: 'Primed for a show': Why 2024 is shaping up to be a great fall foliage year in Vermont The next week will bring patchy foliage to the entire state and partial foliage in the North, Smoky Mountains says. By the week of Sept. 23, Vermont's foliage will be partial as areas in the state's northern part start to near their peak.

Fall colors aren't just pleasing to the eyes, they're also a huge moneymaker for local economies. Vermont's Agency of Commerce and Community Development estimates that leaf peeping generates around $600 million and constitutes upwards of 20% of the state's total annual tourism economic activity each year.

Some parts of the Adirondacks are approaching the midpoint seasonal leaf transition this week, with other locations just beginning to see the color change. As usual, the area leads the way for color transition in the Empire State.

However, while New York City may not notice a change, I Love NY, the state’s tourism website, issued its second New York Fall Foliage Report, which indicates that most of the state is experiencing a turn toward the customary colors associated with the season.