Over recent decades, emissions of air pollutants from transport decreased. However, road transport remains one of the most significant sources of air pollutant emissions. In Slovenia in 2024 road transport accounted for 43 % to the total emissions of nitrogen oxides. In the period 1990-2024 emissions of substances that cause acidification and emissions of ozone precursors in the transport sector declined by 72 % and 76 %. In the period 2000-2024 emissions of particulate matter decreased by 52 %.

Greenhouse gas emissions from forest fires in Slovenia generally account for a small share of emissions in the LULUCF sector, but they can increase significantly in individual years due to major fire events. The highest emissions during the monitoring period were recorded in 2022, when more than 3,000 ha of forest were burned in the Goriški Kras. Higher temperatures, more frequent and severe droughts, and heatwaves may increase the risk of forest fires and their spread in the future, leading to greater uncertainty in the emissions balance and potentially more frequent emission peaks.

Slovenian forests are over-mature, the current ratio of forest development phases is unfavourable, forest regeneration is too slow, or the areas of forests under restoration are too small to significantly change the share of forest development phases and thus ensure sustainable forest development. The role of forests as a carbon sink is at risk.

Greenhouse gas (GHG) emissions due to land-use change generally show a declining trend. In 2024, emissions from deforestation decreased by 1.5% compared to the previous year, with approximately two-thirds of these emissions resulting from the establishment of agricultural land. Emissions from the expansion of settlements and related land uses decreased by 3% compared to the previous year, with the largest share of emissions (just over 76%) resulting from expansion onto agricultural land.

GHG emissions from industry decreased by 1.7% in 2024 compared with the previous year. Since 2019, an overall downward trend in GHG emissions can be observed in this sector. Emissions from the ETS subsector increased by 6.1% in 2024, following five consecutive years of decline. By contrast, GHG emissions from the non-ETS subsector of industry decreased by 11.2% compared with 2023. In 2024, the ETS subsector accounted for 59.5% of total GHG emissions from industry, while the non-ETS subsector accounted for 40.5%.