In this study, toxic heavy metal contamination in dust sam- ples obtained from different streets in Denizli, Turkey, was monitored. The areas selected include heavy, moderate, and normal traffic flow, building con- struction sites and other indus- trial activities near roads, car parks, school gardens, health cen- ters, and hospitals. The metals were determined by flame atomic absorption spectrometry. The concentration ranges were Cu at 20.4–147.4 μg g-1, Cr at 9.9–75.0 μg g-1, Ni at 22.8–86.2 μg g-1, Pb at 14.4–145.3 μg g-1, and Mn at 52.3–158.3 μg g-1. The Cd content for all dust samples was below 0.1 μg g-1. According to the geoaccumulation index (Igeo) clas- sification, Cr and Mn were pre- sent at the lower level (0