The measured concentrations of nitrogen dioxide and total nitrogen oxides in outdoor air do not exceed the prescribed limit values, so these two pollutants are not harmful human health and vegetation.

In 2017 air pollution due to PM₁₀ was comparable to years before. Exceedences of the daily limit PM₁₀ concentration were above the allowed annual number of 35 in year 2017 at ten measuring sites in the interior of Slovenia: four in urban-traffic type of measuring site, three in urban background, two in rural-agricultural type and one in suburban background. All exceedances were recorded in the cold half of the year because individual heating is the major source of PM₁₀ and the unfavourable meteorological conditions are present.