By nature the sky is not totally clean, however when the concentration of particles is higher than normal it can attenuate the intensity of solar radiation more intensely. So the amount of solar radiation reaching the Earth’s surface largely depends on atmospheric turbidity. In this way, the objective of this work was to estimate the optimal daily values of atmospheric turbidity and radiative surface parameters such as: the Angstrom turbidity coefficient (β), Angstrom wavelength exponent (α), the albedo single dispersion (ω0) and ascending dispersion (Fc). By means of measurements of incident solar radiation (global, direct and diffuse), made between June and July 2019 in the Province of Huancayo-Peru, the parameters presented above were calculated. The numerical model used to calculate the components of direct, diffuse and global solar radiation, is the numerical model of broadband parameterization for clear sky; IQC (Iqbal, 1993) which is based on synoptic information. The results show β and α values of 0.16 and 1.3 respectively, suggesting a partially contaminated atmosphere.