Key message
Bad

In 2021, the levels of benzo(a)pyrene at all urban monitoring sites reached the target value. Annual trends of benzo(a)pyrene levels show that the highest levels are measured during the heating season. In summer, levels are significantly lower at all locations.

In 2021, the annual levels of arsenic, nickel, cadmium and lead in urban monitoring sites were lower than the prescribed limit or target value. In Žerjav in the Upper Mežiška valley, high levels of arsenic, cadmium and lead throughout the year are mainly related to the operation of the surrounding industry. Average annual values ​​of arsenic and cadmium at the Žerjav monitoring site are higher than at other monitoring sites, but do not exceed the prescribed quality standards. In 2021, however, the limit value for lead was exceeded for the first time since 2009, when we have been carrying out measurements in Žerjav.


Charts

Figure ZR17-1: The average concentrations of arsenic in PM10 at selected monitoring sites, 2008-2021
Sources:

Slovenian Environment Agency, Air Quality Measurement Dataset, 2021

Show data
CE bolnica[ng/m3] LJ Bežigrad[ng/m3] LJ Biotehniška[ng/m3] MB Titova[ng/m3] NG Grčna[ng/m3] Iskrba[ng/m3] Žerjav[ng/m3] limit value
2008 0.73 1.20 0.73 6
2009 0.47 0.61 0.40 2.70 6
2010 0.48 0.80 0.33 2.20 6
2011 0.58 0.76 0.45 1.90 6
2012 0.56 0.66 0.38 2 6
2013 0.65 0.48 0.29 1.70 6
2014 0.42 0.61 0.30 1.90 6
2015 0.50 0.58 0.31 2.10 6
2016 0.53 0.40 0.44 0.23 1.90 6
2017 0.55 0.44 0.48 0.26 1.30 6
2018 0.48 0.42 0.49 0.26 1.70 6
2019 0.42 0.35 0.35 0.22 2.10 6
2020 0.38 0.30 0.34 0.17 1.40 6
2021 0.37 0.33 0.32 0.24 0.18 2.30 6
Figure ZR17-2: The average concentrations of cadmium in PM10 at selected monitoring sites, 2008-2021
Sources:

 

Slovenian Environment Agency, Air Quality Measurement Dataset, 2021

Show data
CE bolnica[ng/m3] LJ Bežigrad[ng/m3] LJ Biotehniška[ng/m3] MB Titova[ng/m3] NG Grčna[ng/m3] Iskrba[ng/m3] Žerjav[ng/m3] limit value
2008 0 0 0.76 0.38 0 0.13 0 5
2009 0 0 0.22 0.27 0 0.10 2.60 5
2010 0 0 0.26 0.31 0 0.11 4.40 5
2011 0 0 0.47 0.55 0 0.26 2.50 5
2012 0 0 0.25 0.24 0 0.11 1.50 5
2013 0 0 0.28 0.24 0 0.08 2.50 5
2014 0 0 0.22 0.22 0 0.09 2.70 5
2015 0 0 0.23 0.20 0 0.08 4.90 5
2016 0.95 0 0.22 0.19 0 0.07 5.70 5
2017 0.38 0 0.19 0.17 0 0.07 1.90 5
2018 0.39 0.25 0.19 0 0.08 1.90 5
2019 0.52 0.18 0 0.16 0 0.06 1.30 5
2020 0.64 0.25 0 0.18 0 0.08 2.80 5
2021 0.34 0.20 0 0.13 0.12 0.06 2.70 5
Figure ZR17-3: The average concentrations of nickel particles PM10 at selected monitoring sites, 2008-2021
Sources:

 

Slovenian Environment Agency, Data collection of air quality measurements, 2021

Show data
CE bolnica[ng/m3] LJ Bežigrad[ng/m3] LJ Biotehniška[ng/m3] MB Titova[ng/m3] NG Grčna[ng/m3] Iskrba[ng/m3] Žerjav[ng/m3] limit value
2008 0 0 6.70 3.50 0 3.30 0 20
2009 0 0 5.20 2.40 0 2.60 1.70 20
2010 0 0 4.50 3 0 1.80 1.80 20
2011 0 0 7.20 3.20 0 2.30 2.40 20
2012 0 0 5.70 3.80 0 2.40 2.40 20
2013 0 0 6.45 3.42 0 2.32 2.80 20
2014 0 0 3.30 2 0 1 1.90 20
2015 0 0 3.60 1.60 0 0.88 2.70 20
2016 1.60 0 2.60 1.60 0 0.83 1.20 20
2017 1.60 0 2.80 1.80 0 0.78 1.10 20
2018 1.50 3.60 1.70 0 0.96 1.30 20
2019 1.20 2.10 1.40 0 0.72 0.96 20
2020 1.20 1.40 1.40 0 0.87 0.92 20
2021 1.40 2.20 1.50 0.90 0.68 1.70 20
Figure ZR17-4: The average concentrations of lead in particulate matter PM10 at selected monitoring sites, 2008-2021
Sources:

 

Slovenian Environment Agency, Data collection of air quality measurements, 2021

Show data
CE bolnica[ng/m3] LJ Bežigrad[ng/m3] LJ Biotehniška[ng/m3] MB Titova[ng/m3] NG Grčna[ng/m3] Iskrba[ng/m3] Žerjav[ng/m3] limit value
2008 0 0 14.20 13.90 0 3.90 0 500
2009 0 0 8.30 9.70 0 3.30 293 500
2010 0 0 8.30 11.70 0 3.30 254 500
2011 0 0 10.80 11.50 0 3.60 300 500
2012 0 0 7.40 10.50 0 2.90 252 500
2013 0 0 6.64 10.60 0 2.10 384 500
2014 0 0 5.60 25 0 2.30 329 500
2015 0 0 7.10 11.10 0 2 338 500
2016 7.50 0 6.10 7 0 6.10 351 500
2017 7.60 0 5.80 7.50 0 1.80 320 500
2018 7.40 12.70 8.40 0 2.10 400 500
2019 6.90 6.70 0 6.40 0 1.50 357 500
2020 7 7.10 0 6.40 0 1.60 437 500
2021 5.70 5.90 0 5.70 1.20 1.20 694 500
Figure ZR17-5: The average concentrations of benzo(a)pyren in particulate matter PM10 at selected monitoring sites
Sources:

Slovenian Environment Agency, Data collection of air quality measurements, 2021

Show data
LJ Bežigrad[ng/m3] LJ Biotehniška[ng/m3] MB Titova[ng/m3] Iskrba[ng/m3] NG Grčna[ng/m3] limit value
2009 0 0.87 0.92 0.23 0 1
2010 0 1.10 1.10 0.24 0 1
2011 0 1.10 1.10 0.23 0 1
2012 0 1.30 1.20 0.25 0 1
2013 0 1.10 1.10 0.20 0 1
2014 0 0.73 0.97 0.14 0 1
2015 0 1.30 1.10 0.19 0 1
2016 0 1.40 1.40 0.19 0 1
2017 0 1 1 0.16 0 1
2018 1 0 0.83 0.17 0.93 1
2019 1.20 0 0.73 0.12 0.95 1
2020 1.30 0 0.93 0.17 1.10 1
2021 0.95 0 0.69 0.16 1 1

Methodology

Date of data source summarization