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Continuous real-time measurements of aerosol scattering properties were investigated at Anantapur (14 degrees 62’ N, 77 degrees 65’ E, 331 m asl), a semi-arid region in southern India for the period of January 2011December 2011, using a three-wavelength Integrating Nephelometer. Aerosols scattering properties like the scattering coefficient (sigma(sp)), backscattering coefficient (sigma(sp)), scattering Angstrom exponent (angstrom), backscattering ratio (b(lambda)) and asymmetry parameter (g(lambda)) were measured for the period of study. The average values of (+/- standard deviation) sigma(sp), sigma(bsp) at 550 nm (sigma(550)(sp), sigma(550)(bsp)) and angstrom(700/450) were found to be 97 (+/- 9.2) M m-1 and 14 (+/- 0.93) M m-1 and 1.02 (+/- 0.3), respectively. The estimated average values of b? and g? at 550 nm from sigma(550)(sp) and sigma(550)(bsp) were 0.13 (+/- 0.09) and 0.59 (+/- 0.1), respectively. The maximum asymmetry parameter at 550 nm was found to be 0.63 +/- 0.01 in the month of October and minimum (0.52 +/- 0.03) during March, which shows the opposite trend with backscattering ratio. Significant correlation coefficients were noticed between different aerosol optical properties. The highest values of sigma(550)(sp) were observed during weekdays whereas low values during weekends. Scattering Angstrom exponent for the summer and winter seasons has been consistent with the input of fine mode particles from anthropogenic origin. (C) 2013 Elsevier Ltd. All rights reserved.