Welcome to the Sierra Club - Wisconsin Chapter.
We are Wisconsin's voice for the nation's oldest, largest and most influential grassroots environmental organization. Our members include 18,000 of your friends and neighbors. Inspired by Wisconsin’s beautiful lakes, forests, rivers, and other natural features, we work together to protect our communities and the planet.
Looking to take action on the most pressing issues in Wisconsin?
Make a Difference for Wisconsin's Future!
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Local News and Information
Celebrating Volunteers: Submit Nominations for Chapter Awards!
June 22, 2026
Each year, the Sierra Club Wisconsin Chapter recognizes outstanding volunteers for their contributions to our organization, our communities, and our planet. We know there is amazing work being done across our state, and today we are asking you to...
Data Centers and Clean Energy are Major Issues in Governors Race
June 21, 2026
This year, Wisconsin is experiencing a warmer, wetter climate with more extreme weather events. Farm fields oscillate between being flooded and experiencing drought. Wisconsinites struggle to enjoy the outdoors due to extreme heat, increased tick...
Honoring Dr. Al Gedicks
June 19, 2026
A memorial for Dr. Al Gedicks will be held on Saturday, July 18, 2026, at 10:00 am-3:00 pm Central, at the Menominee Casino Convention Center in Keshena, Wisconsin. A driving force of environmental justice alliances fighting mining companies in the...