We present analysis of regularities in the small-scale spatiotemporal variability of the transmission and radiative properties of the atmosphere revealed from the results of atmospheric optics investigations in Tomsk region. Three main aspects were treated: 1) diurnal variation of the atmospheric transmission components (aerosol, water vapor) causing a decrease in the solar radiation influx in the evening period; 2) peculiarities of variations of the atmospheric transmission in the neighboring regions (urban – forest area) and the urban effect on the radiation regime; 3) interrelations of synoptic variations of individual components and the influence of the air masses changes, typical for the West-Siberian region, on the parameters under study.