The present study shows the current scenario of the prospective health risk of exposure to fine particulate matter and its composition at industry level. The indoor and outdoor sampling of fine particulate matter was conducted in residential site (Industry-1) and road site (Industry-2) shoe industry in Agra city. The average concentration of PM sizes accounted in indoor during sampling duration were 30.11µg/m3±10.29µg/m3 for PM1.0, 47.79 µg/m3±45.49µg/m3 for PM2.5 and 90.15µg/m3±33.61 µg/m3 for PM10 at industry-1, and 7.66 µg/m3±1.86 µg/m3 for PM1.0, 22.24 µg/m3±3.69 µg/m3 for PM2.5 and 60.89 µg/m3±49.06 µg/m3 for PM10 at industry-2. The concentration of the three components of PM (PM1.0, PM2.5, PM10) was found to be highest in industry-1 in comparison to industry-2. The full-day variation of fine particulate matter concentration and indoor meteorological parameters were also monitored. The average mass concentrations of various fraction of PM (PM1.0, PM2.5, PM10) were collected at indoor and outdoor environment in two leather (shoe) small scale industries by APM 550. After acid digestion, quantification of 16 major metals Cu, Ba, Cd, Cr, Fe, Mn, Ni, Pb, Al, K, Ca, Na, Mg, As, Co and Zn was done using ICP-AES (Inductive Couple Plasma-Atomic Emission  Spectroscopy) and AAS (Atomic Absorption spectroscopy).  

Keywords: Air pollution, Indoor air quality (IAQ), Fine particulate matter, heavy metals, correlation analysis, Occupational Exposure Levels