Air quality became a concern of highest priority in cities and town agglomerations, worldwide. Professional environmental
monitoring strategies are prerequisites for supplying appropriate programmes destined to maintain air quality. Due to their
capacity of bioaccumulation, tree species may be used as biomonitoring agents within programmes of monitoring air quality in
urban spaces. The present study aims to emphasize the ability of A. hippocastanum L., and T. cordata Mill. leaves to be used as
biomonitoring agents of air pollution with Cu, Pb, Zn, Cd. Atomic Absorption Spectrometry was used for quantification of the
heavy metals from leave matrices. The statistic software package IBM-SPPS Statistics was used for statistical analyzes. The
results show that A. hippocastanum L. leaves may be considered as a useful tool for biomonitoring Cu pollution and T. cordata
Mill. leaves, for biomonitoring Pb, Cd, and Zn, pollution, in conditions of air pollution with Pb, and alarming air Cu
concentrations. Gasoline/Diesel exhausts and abrasion of tires and brake linings are supposed to be the major sources of Cu, Pb,
Zn, Cd air pollution in considered urban area.