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[PR08] Emissions of air pollutants from transport
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Key message
Neutral

In the last decades, major emissions of air pollutants from transport decreased. However, road transport remains one of the most significant sources of air pollution. In Slovenia in 2022 road transport contributed 43 % to the total emissions of nitrogen oxides. In the period 1990-2022 emissions of substances that cause acidification and emissions of ozone precursors in transport sector declined by 71 % and 76 %. In the period 2000-2022 emissions of particulate matter decreased by 51 %.

Charts

Figure PR08-1: Air emissions from transport, Slovenia, 1990-2022
Sources:

Delci (kt) ()

Show data
acidifying substances[1000 t acid equivalents] ozone precursors[1000 t NMVOC equivalents] particulate matter[1000 t PM10 equivalents] acidifying substances[index (1990 = 100)] ozone precursors[index (1990 = 100)] particulate matter[index (2000 = 100)]
1990 1.12 94.03 100 100
1991 1.07 88.72 95.72 94.36
1992 1.03 89.36 92.35 95.03
1993 1.16 98.22 103.93 104.46
1994 1.26 101.08 112.01 107.50
1995 1.08 101.10 95.96 107.53
1996 1.12 104.65 99.67 111.30
1997 1.12 98.65 99.93 104.92
1998 0.89 79.28 79.67 84.32
1999 0.78 68.55 69.93 72.91
2000 0.74 63.01 28.89 65.58 67.01 100
2001 0.73 60.59 28.63 65.24 64.43 99.10
2002 0.63 54.11 25.99 56.27 57.55 89.95
2003 0.61 51.75 25.26 54.66 55.04 87.43
2004 0.63 50.08 26.19 56.37 53.26 90.66
2005 0.64 49.56 26.81 57.48 52.71 92.79
2006 0.66 49.12 27.60 58.99 52.24 95.52
2007 0.70 50.07 29.19 62.19 53.25 101.04
2008 0.77 54.11 32.48 68.97 57.55 112.41
2009 0.60 42.91 25.21 53.43 45.64 87.25
2010 0.58 41.36 24.44 51.56 43.99 84.59
2011 0.59 41.01 24.80 52.20 43.62 85.84
2012 0.58 40.21 24.78 51.95 42.76 85.76
2013 0.54 36.96 22.84 47.82 39.31 79.04
2014 0.52 35.34 21.98 45.98 37.59 76.09
2015 0.48 33.15 20.48 42.79 35.26 70.90
2016 0.47 32.63 20.32 42.38 34.70 70.32
2017 0.45 31.30 19.48 40.57 33.29 67.43
2018 0.42 29.09 18.12 37.68 30.94 62.70
2019 0.38 26.60 16.48 34.18 28.29 57.03
2020 0.30 21.23 12.96 26.73 22.57 44.85
2021 0.31 21.92 13.52 27.88 23.32 46.79
2022 0.33 22.70 14.18 29.28 24.15 49.07
Figure PR08-2: Structure of air emissions from transport, by pollutant, Slovenia, 2022
Sources:

National emissions inventory of air pollutants and greenhouse gases, Slovenian Environment Agency (2022)

Note:

Note to Table PR08-2: Releases expressed in * PM10 release equivalent, ** NMVOC equivalent, *** acidification equivalent

Show data
CH4[%] NMVOC[%] CO[%] SO2[%] NH3[%] PM10[%] NOx[%] Total[1000 t equiv. (PM10*, NMVOC**, acidif.***)] CH4[1000 t equiv. (PM10*, NMVOC**, acidif.***)] NMVOC[1000 t equiv. (PM10*, NMVOC**, acidif.***)] CO[1000 t equiv. (PM10*, NMVOC**, acidif.***)] SO2[1000 t equiv. (PM10*, NMVOC**, acidif.***)] NH3[1000 t equiv. (PM10*, NMVOC**, acidif.***)] PM10[1000 t equiv. (PM10*, NMVOC**, acidif.***)] NOx[1000 t equiv. (PM10*, NMVOC**, acidif.***)]
particulate matter* 0.16 1.06 9.41 89.37 14.18 0.02 0.15 1.33 12.67
ozone precursors** 0.01 14.60 8.01 77.37 22.70 0.00 3.32 1.82 17.57
acidifying substances*** 0.40 4.21 95.39 0.33 0.00 0.01 0.31
Figure PR08-3: Air emissions from passenger cars by pollutants, Slovenia, 2008-2022
Sources:

National emissions inventory of air pollutants and greenhouse gases, Slovenian Environment Agency (2022)

Show data
NOx[kt] CO2[kt] PM10 [kt] PM2.5[kt] NOx[index (2008 = 100)] CO2[index (2008 = 100)] PM10 [index (2008 = 100)] PM2.5[index (2008 = 100)]
2008 10.02 3822.45 1.05 0.80 100 100 100 100
2009 8.31 3377.40 0.89 0.67 82.94 88.36 84.80 83.92
2010 8.83 3557.55 0.96 0.72 88.08 93.07 91.38 90.98
2011 9.35 3766.43 1.00 0.74 93.35 98.53 94.60 93.44
2012 9.48 3731.00 0.98 0.73 94.58 97.61 93.29 91.58
2013 8.96 3534.18 0.91 0.66 89.42 92.46 85.99 83.39
2014 8.83 3507.16 0.85 0.61 88.10 91.75 80.71 76.62
2015 8.56 3475.95 0.81 0.57 85.37 90.94 76.42 71.61
2016 9.07 3685.37 0.82 0.58 90.55 96.41 78.17 72.43
2017 8.92 3728.30 0.80 0.55 89.01 97.54 75.91 69.06
2018 8.51 3716.71 0.77 0.52 84.92 97.23 73.28 64.94
2019 7.86 3570.50 0.72 0.48 78.38 93.41 68.69 59.81
2020 5.67 2747.65 0.55 0.35 56.60 71.88 52.17 44.47
2021 6.12 3199.11 0.62 0.40 61.08 83.69 59.18 49.79
2022 6.88 3703.95 0.70 0.44 68.69 96.90 66.42 55.09
Figure PR08-4: Air emissions from transport
Sources:

Slovenian Environmnet Agency (2023)

 

 

 

Last modified
15.07.2025
Author(s)

Martina Logar, Nataša Kovač, Slovenian Environment Agency