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Data on air pollution shows that Slovenian cities are over-polluted with NO2 and PM10. Transport is one of the main causes of this pollution. Air quality in Slovenian cities improved during the economic recession after 2008, and after 2016 the NO2 pollution became worse again.


This indicator shows the impact of transport on air quality in urban areas, expressed as air concentration of nitrogen dioxide (NO2) and particulate matter (PM10) in the period 2002–2019 for Slovenia and in the period 2002–2017 for Europe. The calculation is based on the comparison of average annual and average maximum annual values of pollutants measured at monitoring locations that are exposed to a direct (city traffic stations) and indirect (city background stations) burden of traffic. The indicator also shows the number of times that limit values for PM10 particulates were exceeded in the period 2005–2019 in Slovenia.

 


Charts

Figure PR07-1: NO2 mean and maximum values of annual averages for traffic and urban background stations in Slovenia
Sources: 

Database of automatic readings from the national network for monitoring air quality (DMKZ), Hydrology and State of the Environment office, Slovenian Environment Agency, 2019 (22. 04. 2021)

Show data

Maribor (DMKZ)[µg/m3]

Ljubljana center (OMS Ljubljana)[µg/m3]

Celje (EIS Celje)[µg/m3]

Zagorje[µg/m3]

urban station - mean[µg/m3]

urban station - maximum[µg/m3]

Ljubljana Bežigrad (DMKZ)[µg/m3]

Celje (DMKZ)[µg/m3]

Nova Gorica[µg/m3]

background station - mean[µg/m3]

background station - maximum[µg/m3]

limit value[µg/m3]

2002

36

50

30

0

39

50

29

24

27

26.67

29

40

2003

37

59

22

0

39

59

32

27

27

28.67

32

40

2004

31

59

36

0

42

59

29

24

25

26

29

40

2005

33

59

40

0

44

59

27

26

24

25.67

27

40

2006

39

70

67

0

59

70

29

28

24

27

29

40

2007

37

66

29

0

44

66

28

23

25

25.33

28

40

2008

34

71

0

0

53

71

29

21

30

26.67

29

40

2009

32

55

0

0

44

55

31

22

28

27

31

40

2010

34

63

0

0

46

63

35

26

29

30

35

40

2011

34

55

0

0

45

55

31

25

28

28

31

40

2012

33

52

0

0

43

52

22

27

26

25

27

40

2013

32

43

20

23

29.50

43

29

26

25

26.67

29

40

2014

30

40

23

20

28.25

40

26

28

19

24.33

28

40

2015

31

36

23

25

28.75

36

30

29

22

27

30

40

2016

27

32

16

24

24.75

32

29

22

24

25

29

40

2017

27

50

22

28

31.75

50

30

28

30

29.33

30

40

2018

22

48

17

20

26.75

48

26

26

25

25.67

26

40

2019

25

45

14

20

19.67

45

25

25

26

25.33

26

40

Figure PR07-2: PM10 mean and maximum values of annual averages for traffic and urban background stations in Slovenia
Sources: 

Database of automatic readings from the national network for monitoring air quality (DMKZ), Hydrology and State of the Environment office, Slovenian Environment Agency, 2019 (22. 04. 2021)

Show data

Maribor (DMKZ)[µg/m3]

Celje (EIS Celje)[µg/m3]

Ljubljana center (OMS Ljubljana)[µg/m3]

Zagorje (DMKZ)[µg/m3]

Ljubljana Gospodarsko (DMKZ)[µg/m3]

Celje Mariborska (DMKZ)[µg/m3]

Nova Gorica Grčna (DMKZ)[µg/m3]

urban trafic station - mean[µg/m3]

urban trafic station - maximum[µg/m3]

Ljubljana Bežigrad (DMKZ)[µg/m3]

Celje (DMKZ)[µg/m3]

Ljubljana- Biotehniška fakulteta[µg/m3]

Kranj[µg/m3]

Novo mesto[µg/m3]

Hrastnik[µg/m3]

Nova Gorica[µg/m3]

Koper[µg/m3]

Velenje[µg/m3]

Maribor Vrbanski[µg/m3]

Ptuj[µg/m3]

urban background station - mean[µg/m3]

urban background station - maximum[µg/m3]

limit value[µg/m3]

2001

48

0

0

0

0

0

0

48

48

43

45

0

0

0

0

0

0

0

0

0

46

50

40

2002

50

0

0

47

0

0

0

48.50

50

42

46

0

0

0

0

39

0

0

0

0

43.50

47

40

2003

58

51

0

51

0

0

0

53.33

58

46

53

0

0

0

0

37

0

0

0

0

47

53

40

2004

48

40

0

44

0

0

0

44

48

41

41

0

0

0

0

35

0

0

0

0

39.25

41

40

2005

43

45

0

52

0

0

0

46.67

52

37

43

0

0

0

0

34

0

0

0

0

42.25

55

40

2006

43

0

0

46

0

0

0

44.50

46

33

35

0

0

0

0

32

31

0

0

0

34.20

40

40

2007

40

0

0

41

0

0

0

40.50

41

32

32

0

0

0

0

33

29

0

0

0

32.60

37

40

2008

34

0

44

44

0

0

0

40.67

44

30

30

0

0

0

0

31

25

0

0

0

30.80

38

40

2009

30

0

48

36

0

0

0

38

48

29

31

26

0

0

0

28

23

0

0

0

28.33

33

40

2010

33

0

42

36

0

0

0

37

42

30

32

27

32

31

27

29

25

0

0

0

29.67

34

40

2011

34

0

44

37

0

0

0

38.33

44

32

35

30

30

32

30

27

27

0

26

0

30.89

35

40

2012

30

0

45

32

0

0

0

35.67

45

26

31

27

26

28

24

24

24

22

24

0

26.89

32

40

2013

30

26

41

29

0

0

0

31.50

41

24

29

26

25

27

23

22

20

21

20

0

25.11

30

40

2014

26.52

29

38

28

0

0

0

30.38

38

22.70

27.67

22.20

21.94

22.53

20.76

21.01

19.08

20

19

0

22.72

27.67

40

2015

28

35

40

32

0

0

0

33.75

40

28

32

27

26

28

24

24

23

22

21

0

26.78

32

40

2016

27

27

40

29

0

0

0

30.75

40

24

32

27

23

26

22

21

19

19

20

0

24.44

32

40

2017

28

25

33

29

29

33

25

28.86

33

25

30

25

26

27

23

23

20

21

20

26

24.58

29

40

2018

28

29

35

32

24

31

24

29

35

27

28

21

22

26

22

20

18

19

21

25

23

28

40

2019

23

24

34

25

24

29

23

26

34

21

26

19

19

21

20

20

17

17

18

22

20.17

26

40

Figure PR07-3: Number of exceedances of the daily limit value of particulate matter (50 ug/m3) for traffic and urban background stations in Slovenia
Sources: 

Database of automatic readings from the national network for monitoring air quality (DMKZ). Hydrology and State of the Environment office, Slovenian Environment Agency, 2019 (22. 04. 2021)

Show data

Maribor (DMKZ)[number]

Ljubljana center (OMS Ljubljana)[number]

Celje (EIS Celje)[number]

Celje (DMKZ)[number]

Trbovlje[number]

Ljubljana Bežigrad (DMKZ)[number]

Ljubljana- Biotehniška fakulteta[number]

Kranj[number]

Novo mesto[number]

Zagorje[number]

Hrastnik[number]

Nova Gorica[number]

Koper[number]

Velenje[number]

Maribor Vrbanski[number]

Ptuj[number]

Ljubljana Gospodarsko[number]

Celje Mariborska[number]

Nova Gorica Grčna[number]

2005

101

0

89

97

157

70

0

0

0

143

0

37

0

0

0

0

0

0

0

2006

108

0

92

59

86

47

0

0

0

106

0

47

40

0

0

0

0

0

0

2007

91

0

0

48

81

46

0

0

0

99

0

40

19

0

0

0

0

0

0

2008

54

101

0

37

72

36

0

0

0

109

0

33

11

0

0

0

0

0

0

2009

35

112

0

42

48

30

25

0

0

56

0

24

2

0

0

0

0

0

0

2010

47

74

0

58

64

43

32

37

60

68

30

25

15

0

0

0

0

0

0

2011

64

94

0

73

68

63

51

55

69

75

51

28

21

0

25

0

0

0

0

2012

34

107

0

55

65

27

21

27

45

62

17

19

23

11

8

0

0

0

0

2013

36

74

35

51

50

22

24

28

49

48

15

12

10

8

7

0

0

0

0

2014

25

55

41

41

33

19

12

12

22

38

10

19

16

15

10

0

0

0

0

2015

34

85

76

70

50

43

35

17

40

70

22

24

28

9

3

0

0

0

0

2016

43

66

45

53

38

36

40

27

41

51

25

15

11

10

21

0

0

0

0

2017

35

51

39

49

39

30

32

28

33

46

19

24

18

19

21

38

39

57

21

2018

30

51

43

35

37

28

16

13

31

55

11

6

4

2

12

25

20

45

5

2019

13

37

25

23

16

16

8

8

10

28

9

10

8

2

0

15

21

43

10

Figure PR07-4: NO2 mean values of annual averages for traffic stations in Europe, 2017
Sources: 

EEA, Exceedances of air quality limit values due to traffic, 2019 (4. 06. 2021)

Figure PR07-5: NO2 mean values of annual averages for urban background stations in Europe, 2017
Sources: 

EEA, Exceedances of air quality limit values due to traffic, 2019 (4. 06. 2021)

Figure PR07-6: PM10 mean values of daily averages for traffic stations in Europe, 2017
Sources: 

EEA, Exceedances of air quality limit values due to traffic, 2019 (4. 06. 2021)

Figure PR07-7: PM10 mean values of daily averages for urban backround stations in Europe, 2017
Sources: 

EEA, Exceedances of air quality limit values due to traffic, 2019 (4. 06. 2021)


Goals

To comply with the following limit values for ambient air concentrations of nitrogen oxides in order to protect human health and vegetation:

  • hourly NO2 concentration limit value for human health protection: 200 µg/m3 (allowed exceedance: 18 times within a calendar year);
  • annual NO2 concentration limit value for human health protection (to be met by 1 January 2010): 40 µg/m3;
  • annual critical value for plant protection: 30 µg NOx/m3. Critical value for NO2 measured in three consecutive hours at places that are representative for air quality in areas of at least 100 km2, in the entire area or in agglomerations must not exceed 400 µg/m3.

Limit values for ambient air concentration of PM10 particulates for protection of human health:

  • daily PM10 concentration limit value: 50 µg/m3 (allowed exceedance: 35 times within a calendar year);
  • annual PM10 concentration limit value: 40 µg/m3.


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