In 1993 Yalonda Sinde helped spearhead the Community Coalition for Environmental Justice (CCEJ), a grassroots organization in Seattle that gained national recognition for eliminating two major sources of air pollution and mobilizing low income communities and communities of color to work together to achieve justice and equality.  The organization also helped form the first people of color and indigenous people northwest environmental justice network.  

Yalonda is currently the Executive Director of the Association of Environmental Health Academic Programs, an organization that works to improve the health of people and the planet by creating and supporting environmental health academic programs.