Nod y Cynllun Aer Glân yw gwella ansawdd aer a lleihau effeithiau llygredd aer ar iechyd pobl, bioamrywiaeth, yr amgylchedd naturiol a'n heconomi.
A key priority for Welsh Government is to improve air quality and reduce the impacts of air pollution on human health, biodiversity, the natural environment, and our economy.