I In line with the times, air quality has also undergone changes which resultedin air pollution. The DKI Jakarta Government has officially implemented the LowEmission Zone (LEZ) area in the Kawasan Kota Tua Jakarta (Jakarta Old City) toovercome these problems. Kawasan Kota Tua Jakarta is a cultural heritage areathat applies LEZ and there hasn’t been research on the analysis of heavy metals inthe ambient air of the Kawasan Kota Tua Jakarta. This research was carried outwith several objectives, specifically identifying the presence or absence of heavymetals in particles (TSP); analyze the concentration of three parameters (particles,Hg, and As) based on the Ambient Air Quality Standard; comparing theconcentrations of the three parameters inside the LEZ and outside the LEZ; andidentify the efforts to control these three parameters. Descriptive quantitativeresearch methods are used. Samples were taken using a portable High Volume AirSampler (HVAS) and analyzed using AAS Hydride for Hg and As. Samples weretaken at 4 location points for 7 days (morning, afternoon, evening) in a period of 3months, between March – May 2022 and obtained 84 samples. Concentrations ofparticles, Hg, and As are still eligible of Ambient Air Quality Standard, butmonitoring is still required. The range of TSP, Hg, and As concentrations from thethree sampling points at the LEZ location are 5 - 73 g/Nm3; 0.016 – 0.051 g/Nm3;and 0 – 0.0003 g/Nm3. Meanwhile, the range of concentrations of TSP, Hg, andAs outside LEZ locations are 9 – 80 g/Nm3; 0.024 – 0.053 g/Nm3; 0.0001 –0.0013 g/Nm3. Some efforts to control to control the three parameters areexpanding LEZ, installing Diesel Particulate Filter (DPF) technology on dieselengines of commercial vehicles and cars using diesel engines, rearrangement ofdetected locations by adding green open space (RTH), and setting Ambient AirQuality Standard for Hg and As parameters into the Regulations of Government.Further research is needed by taking a larger number of samples over a longperiod of time and evaluating Ambient Air Quality Standard.