Kreidenweis is interested in the characteristics of atmospheric particles that are responsible for compromised visibility, and has extensively studied the impacts of wildfires. She has investigated how breathable particles grow and form new particles during wild fires, performing open burns of biomass at the Missoula Fire Sciences Lab. She was made a University Distinguished Professor in 2014. In 2015 she served as Dean for Research at the Colorado State University College of Engineering. She serves on the Membership Committee of the American Meteorological Society. Her awards and honours include;   Her publications include;  Kreidenweis is Associate Editor of the Journal of Advances in Modeling Earth Systems.