The metal(loid)s content in the environment is one of the important issues in the environmental management. The metal(loid)s may be present in the both from naturals like natural components of the Earth's crust and anthropogenic sources as human activity effects. Some metal(loid)s are toxic and dangerous for the environment. Chelyabinsk was chosen for researching as a typical industrial Russian city. Road dust and household dust were collected to investigate the contamination of metal(loid)s (Cr, Ni, Cu, Zn, As and Pb) in outdoor and indoor urban. A total of 32 road dust and 17 household dust samples were collected in the urban area during August 2017. The concentrations of metal(loid)s in the dust samples were determined using Аnalyst 400 (Perkin-Elmer) atomic absorption spectrometer with a flame atomization mode. The study shows that Zn has the highest content in road dust whilst in household dust, both As and Ni have the highest content. Cu, Pb, Zn and Cr contamination were significantly elevated in the outdoor and indoor dust. Risk assessment models described by United States Environmental Protection Agency (USEPA) was applied. The study showed that both children and adults having individual health quotient (HQ)<1 for all metal(loid)s are at negligible non-carcinogenic risk. The combined total exposure hazard index (HI) value for children was 1.07. It is indicating that the metal(loid)s detected would harm the children. The cancer risk for adults from exposure to As and Cr was found to be the acceptable or tolerable, their carcinogenic risk assessment (CRA) was in the range of 1E-6…1E-4. The cancer risk for children from exposure to As and Cr was found to be harmful to human beings (CRA > 1E-4).