The aim of this research work was to investigate the levels and possible health risk due to the presence of ambient air pollutants in the atmospheric air of moderate industrial areas (Bua factory, Flourmill and macoba areas) of Port Harcourt metropolis (Industry road). The study deployed standard methods and protocols to examine and monitor the parameters in the air of the study zones. The following; CO2, NO2, SO2, CO, O3, CH4, NH3, and particulate matters were determined. The results revealed that CO, SO2, NO2, O3, and NH3 were not among the detected pollutants in all the zones. The others detected were thus: Bua: PM25; 32.30±1.60 pg/m3, PM10; 36.55±1.15 pg/m3, VOC; 0.065±0.010 ppm. Flourmill: PM2.5; 23.15±2.650 pg/m3, PM10; 43.45±0.650 pg/m3, VOC; 0.195±0.020 ppm. Macoba: PM2.5; 40.80±0.59 pg/m3, PM10; 57.65±6.71 pg/m3, VOC; 0.080±0.010 ppm. The health risk analysis indicated low risk due to hydrogen sulphide and sulphur (IV) oxide presences. The levels of the pollutants were not too high but continuous inhalation may be injurious to the immediate inhabitants of the area. It is recommended that strict monitoring of the area should be encouraged.