The use of seasonal ANN models with PCA-based inputs showed an increased prediction performance
compared with nonseasonal models. For seasonal ANN models, the overall model agreement in training between modeled and
observed values varied in the range of 0.78–0.83 and R2 values ranged in 0.681–0.727, which outperformed nonseasonal models.
The best testing R2 values of seasonal models for winter and summer periods ranged in 0.709–0.727 with lower testing error, and
the models did not show a tendency towards overpredicting or underpredicting the PM10 levels. The approach demonstrated in
the study appeared to be promising for predicting short-term levels of pollutants through the data sets with high irregularities and
could have significant applicability in the case of large number of considered inputs.