Sierra Club Illinois Chapter

From the shores of Lake Michigan to the forests of the Shawnee, Illinois is a state rich in natural beauty. We are committed to protecting the diversity of our state's natural resources through campaigns on conservation, energy issues, clean water, and transportation. 

Volunteer with us, become a member, or donate and help us protect the water, air, land and wildlife in our beautiful state.

For up-to-date news and actions follow us on social media. We're on Twitter, Facebook, and Instagram.

Welcome to the Illinois Chapter of Sierra Club!

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Belle Smith Springs in the Shawnee National Forest

Monarch Butterfly

Butterfly milkweed

Inspiring Connections Outdoors Tour of Metropolitan Water Reclamation District (MWRD) Plant

Inspiring Connections Outdoors clean up at Montrose Beach

Eagle Valley Group River Cleanup

Eagle Valley Group River Cleanup

Rally in Chicago to support EPA workers.

Women's March on Chicago

Chicago Inspiring Connections Outdoors (ICO) Paddling Trip at Skokie Lagoons

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Local News and Information

Illinois Must Step Up Now To Lead On the Environment

April 22, 2025
55 years ago, on the first Earth Day, a grassroots movement rose up to protect the basic building blocks that made America great - clean air, water, and our natural heritage.  Our country responded quickly with bipartisan leadership that...