Summary. We propose to apply the two-stage cluster approach for the investigation of the dynamics in emissions of the most common pollutants into the atmosphere in Lviv region. The mathematical model was described. The implementation of the proposed approach was performed in the Matlab 7.10.0 environment and the results were presented.

Кеу words: clustering, k-means algorithm, Kohonen’s self-organizing maps, the atmosphere air, emissions of pollutants.