Usher, Mary J. Blige, No Doubt, Common and Train are scheduled to headline an Earth Day rally and concert on the National Mall, hosted by will.i.am and Soledad O'Brien.
The rally on Saturday on the Washington Monument grounds will be free and open to the public. Fall Out Boy and My Morning Jacket are also set to perform.
The event is a joint initiative between the Earth Day Network and the Global Poverty Project, pushing to end extreme poverty and solve climate change.
Organizers announced Monday that the speakers will include United Nations Secretary-General Ban Ki-moon, World Bank President Jim Yong Kim, U.S. Interior Secretary Sally Jewell, Energy Secretary Ernest Moniz, NASA Administrator Charlie Bolden and numerous lawmakers.
The event is scheduled to run from 11 a.m. to 7 p.m.