Kostas Eleftheratos graduated from the Department of Environment of the University of the Aegean (2000), received his MSc in Environmental Physics from the Department of Physics of the Aristotle University of Thessaloniki (2002) and his PhD on Geoenvironmental Sciences from the Department of Geology and Geoenvironment of the National and Kapodistrian University of Athens (2007).

He has worked as a postdoctoral researcher at the Center for Environmental Effects on Health of the Biomedical Research Foundation of the Academy of Athens (2008-2011). Lecturer of Atmospheric Physics at the Department of Geology and Geoenvironment of the National and Kapodistrian University of Athens (2012-2016), Assistant Professor of Atmospheric Physics with applications to Climatology (2016 - 2022), Associate Professor of Atmospheric Physics with applications to Climatology (2022 - present).

His research focuses on the changes in the composition of the atmosphere on short and long time and space scales (clouds, greenhouse gases, ozone, ultraviolet radiation, aerosols), the study of natural climatic oscillations, atmospheric effects from aircraft emissions, atmospheric pollution, changes in climatic parameters, and environmental effects on health.

He has participated in 23 international and 20 national competitive research projects and has coordinated 1 national competitive research project. He has authored or coauthored 45 journal publications, 14 book chapters/newsletters, 17 conference proceedings and 80 abstracts at international meetings.