Environmental indicators in Slovenia

Environmental indicators are based on graphs, maps and assessments and as such present environmental trends in Slovenia. The indicators represent one of the four pillars of our environmental reporting, and are prepared in accordance with the Environmental Protection Act. The Environmental Indicators in Slovenia website enables users to browse among 180 indicators. They are based on numerical data and they indicate the state, characteristics and trends of environmental development in Slovenia. They are prepared using a systematic approach based on data and monitoring, as shown in the information pyramid.

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In the post-2000 period, nitrogen consumption from mineral fertilisers initially declined. After 2009, consumption more or less stabilised at around 27,500 tonnes, with annual values ranging from 26,300 to 28,612 tonnes. In 2019, consumption was equal to the 2020 target (less than 28,000 tonnes of N per year). On average over the last few years, the 2020 target has been met.


Heavy metal emissions in Slovenia significantly decreased between 1990 and 2019. This can be largely attributed to the implementation of the EU legislation, improved surveillance and use of the best available technologies.


Emissions of total ozone precursors in Slovenia decreased by 58 % in the period 1990 to 2019. Emissions of nitrogen oxides decreased by 60 %, carbon monoxide by 67 %, non-methane volatile organic compounds by 52 % and methane by 24 %. The reason is mainly the introduction of more stringent emission standards for motor vehicles. This measure contributed to a significant reduction in emissions of nitrogen oxides and carbon dioxide from road transport which is the main source of ozone precursors.


Asthma is the most common chronic disease among children and one of the major causes of hospitalization to the age of fifteen. In 2019, in EU countries, the share of people reporting asthma was 5,7 %, and for Slovenia it was 4,8 %.  In the period 2015-2020, the municipalities of Mežica, Kostel, Kobilje, Idrija, Apače and Trzin stood out in terms of the number of hospitalizations for asthma. Children admitted to the hospital for asthma in 2020 were mostly 5 to 9 years old.


Due to high levels of lead in the environment, area of Upper Meža Valley was proclaimed as a brownfield site in 2007 and received special remediation with the aim to protect human health, especially children. The data show that the burden of children with lead improved in the first years of the program, which was not the case after 2010. Prevalence study of blood lead burden of children from Meža Valley conducted in 2018 showed higher values of blood lead, than study conducted in 2013. In the period 2019 to 2021, the measured values were again lower and close to the goal value.


In Slovenia, in 2020, children (0-14 years old) in larger cities were exposed to concentrations of 21-30 µg PM10/m3. In Europe, most children live in an environment where PM10 concentrations are below 26 µg/m3. It is a worrying fact that in Slovenia in 2018 about 2% of children were exposed to concentrations between 31 and 40 PM10/m3, and in 2019 as much as 53%, fortunately, concentrations decreased in 2020, so children were not exposed to concentrations above 30 µg PM10 / m3 that year.