Total suspended particulate matter (TSP), sulphur dioxide (S02) and nitrogen dioxide (N02) have been monitored at Rawasari district and industrial area Pulogadung in Jakarta as part of the Global Environmental Monitoring System (GEMS/WHO)/Air Network since 1978. This study reports the yearly trend of TSP, S02, N02 during 1986-1995, and water soluble sulfate and nitrate content in particulate during 1986-1990, in both sites. There are similar patterns of the yearly change of TSP, SO2, NO2 in both sites during the monitoring period of 1986-1995, and sulphate and nitrate during the monitoring period of 1986-1990. The TSP levels in Rawasari and Pulogadung area are stable during 1986-1995 in the range of 150-300 pg/m3. The annual average concentrations of S02 and N02 up to 2.50 pg/m3 and 14.71 pg/m3 respectively, are observed. The sulphate levels in both sites tend to decrease, while the nitrate levels tend to increase. The sum of sulphate and nitrate content comprised at maximum of 8.20% of the total mass of TSP in Rawasari site, and 7.40% of mass of TSP in Pulogadung industrial site.