Vallero is an American environmental author and scientist.
He was born in East St.
Louis, Illinois and grew up in Collinsville, Illinois.
He received a bachelor's degree and a master's degree in city and regional planning from Southern Illinois University-Edwardsville.
He also earned a masters in civil and environmental engineering (environmental health sciences) from the University of Kansas and a PhD in civil and environmental engineering from Duke University with a thesis on "“Dicarboximide Fungicide Flux to the Lower Troposphere from an Aquic Hapludult Soil”