Photovoltaic (PV) modules are one of the source through which solar energy is trapped for power generation. Worldwide accumulation of dust over the PV module causes a serious concern on the performance output. This paper deals with the artificially sprayed cement dust of different masses on three different PV modules with fixed tilt angle of 20° in a single day. Measurements of current, voltage and solar radiation are recorded manually every 30 minutes from 7.00am – 16.00pm. The performance of the solar panel with dust density of 0.359 mg/cm2 is less affected than the other two dust densities of 0.828 mg/cm2 and 1.040 mg/cm2. The results showed the average efficiency loss in the PV module of cement dust density 1.040 mg/cm2 is about 3.02% whereas the average efficiency loss in 0.828mg/cm2 is about 1.90% and in 0.359 mg/cm2 is about 0.68%.