We are activists, environmentalists and explorers.
Founded by John Muir in 1892, the Sierra Club works to protect communities, conserve wild places, and explore nature. The Chicago Sierra Club is 7,500 members strong. Our territory stretches south from the Lake County line to the Indiana border, west to part of La Grange, and north through Niles and Skokie. We are active in environmental issues, electoral campaigns, and social events.
Check our Calendar below for information on some of our upcoming events. Visit the Volunteer tab above to find information on teams and leaders who can help you get involved, and follow us on Instagram, Bluesky and Facebook to stay up to date.
Chicago Sierra Club Events Calendar
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Local News and Information
Meet our first round of environmental champions in the 2027 Chicago municipal elections!
October 14, 2026
Sierra Club seeks to elect environmental champions who will work with the environmental movement to tackle the climate crisis, fight for environmental justice and make every community more walkable, bikeable and transit-forward Sierra Club’s...
Sierra Club Chicago Statement of Support for Shape Oak Park
October 2, 2026
The Chicago Group sent the following statement to the Village Board of Oak Park on Sept. 30, 2026. To the Village Board of Oak Park, My name is David Teeghman, and I am the Executive Committee Chair for Sierra Club’s Chicago...
167 Pounds of Beach Litter Cleared!
June 2, 2026
On Saturday, April 25, 2026, the Chicago Water Team partnered with the Alliance for the Great Lakes and the Truman College Environmental Club for our annual Earth Day Beach Cleanup at Montrose Beach. The Chicago Group has been cleaning the city...