Abstract: The effect of burning naked lamp on the levels of air pollutants, SPM, NO2, SO2, THC and CO was determined in Diobu area of Port Harcourt metropolis, Nigeria using active sampling methods involving a high volume sampler, a train of impingers and a digital gas monitor. The concentrations of SPM ranged between 10.7 and 682.8 �g m 3, NO2 ranged between 35 and 180.8 �g m 3, THC ranged between 9.1 and 10.9 �g m 3, CO ranged 1.0 and 3.5 ppm while SO2 (<6.5 �g m 3) did not vary. The levels of pollutants measured during burning naked kerosene lamp were higher than those measured without the naked lamp. In particular the differences in the levels of SPM and NO2 between the burning naked lamp measurements and without the naked lamp measurements were found to be significant (p<0.05). The levels of SPM and NO2 measured during the burning naked lamp exceeded their permissible limits recommended by local and international agencies. The regular use of naked lamps in homes and night markets were therefore discouraged.