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[ZR06] Air pollution by nitrogen dioxide
State

Key message
Good

The measured concentrations of nitrogen dioxide and total nitrogen oxides in outdoor air do not exceed the prescribed limit values, so pollution with these two pollutants is not dangerous to human health and vegetation.

Charts

Figure ZR06-1: Number of hours with exceeded average 1-hour limit value of NO2 concentration (permitted exceeding is 18 hours) 
Sources:

Datebase from the national network for monitoring air quality (DMKZ), Slovenian Environemt Agency, 2012.

Note to Figure ZR6-1: The measuring station Ljubljana center, which is operated by the Municipality of Ljubljana, has moved from its location at the intersection of Figovec to Vošnjak and Tivoli streetsat at the end of 2009. The station was renovated in accordance with the requirements of the law. 

np = no data

Show data
1992 1993 1994 1995 1996 1997 1998 1999 2000 2001
Urban background number of hours 5 9 14 6 1 np 0 0 0 0
Ljubljana Bežigrad number of hours np np np np np np np np np np
Celje number of hours 5 9 14 6 1 np 0 0 0 0
Nova Gorica number of hours np np np np np np np np np np
Koper number of hours np np np np np np np np np np
Suburban background number of hours np np np np np 0 0 0 0 0
Trbovlje number of hours np np np np np 0 0 0 0 0
Urban-traffic type number of hours 15 21 2 0 0 0 3 2 7 0
- Ljubljana center number of hours 15 21 0 0 0 0 3 2 0 0
- Maribor center number of hours 0 3 2 0 0 0 0 0 7 0
Rural/Agricultural type number of hours np np np np np np np np np np
Murska Sobota - Rakičan number of hours np np np np np np np np np np
permitted exceedance number of hours 18 18 18 18 18 18 18 18 18 18
2002 2003 2004 2005 2006 2007 2008 2009 2010 2011
Urban background number of hours 0 0 0 0 0 0 0 0 0 0
Ljubljana Bežigrad number of hours np 0 0 0 0 0 0 0 0 0
Celje number of hours 0 0 0 0 0 0 0 0 0 0
Nova Gorica number of hours 0 0 0 0 0 0 0 0 0 0
Koper number of hours np np np np np np 0 0 0 0
Suburban background number of hours 0 0 0 0 0 0 0 0 0 0
Trbovlje number of hours 0 0 0 0 0 0 0 0 0 0
Urban-traffic type number of hours 0 0 0 0 1 2 0 0 7 0
- Ljubljana center number of hours 0 np np np np np np np 7 0
- Maribor center number of hours 0 0 0 0 1 2 0 0 0 0
Rural/Agricultural type number of hours 0 0 0 0 0 0 0 0 np 0
Murska Sobota - Rakičan number of hours 0 0 0 0 0 0 0 0 np 0
permitted exceedance number of hours 18 18 18 18 18 18 18 18 18 18
2012
Urban background number of hours 0
Ljubljana Bežigrad number of hours 0
Celje number of hours 0
Nova Gorica number of hours 0
Koper number of hours 0
Suburban background number of hours 0
Trbovlje number of hours 0
Urban-traffic type number of hours 1
- Ljubljana center number of hours 0
- Maribor center number of hours 1
Rural/Agricultural type number of hours 0
Murska Sobota - Rakičan number of hours 0
permitted exceedance number of hours 18
Figure ZR06-2: Average annual concentration of NO2 (annual limit value is 40 μg/m3) 
Sources:

Database from the National network for monitoring air quality (DMKZ), Slovenian Environmental Agency; Database of automatic measurement measuring network TPP, TPP Trbovlje the Ljubljana, Milan Vidmar Electric Institute , 2011.

Note to Figure ZR6-2: Measuring Station Ljubljana center, which is operated by the Municipality of Ljubljana, has moved from its location at the intersection of Figovec to Vošnjak and Tivoli streets at the end of 2009. The station was renovated in accordance with the requirements of the law. Data for the new station Ljubljana center will be available from 2010.

np = no data

Show data
1992 1993 1994 1995 1996 1997 1998 1999 2000 2001
Urban background µg/m3 32 37 37 35 33 np 29 28 30 26
Ljubljana Bežigrad µg/m3 np np np np np np np np np np
Celje µg/m3 32 37 37 35 33 np 29 28 30 26
Nova Gorica µg/m3 np np np np np np np np np np
Koper µg/m3 np np np np np np np np np np
Suburban background µg/m3 np np np np np 29 19 17 18 6
Trbovlje µg/m3 np np np np np 29 29 26 28 np
- Škale µg/m3 np np np np np np 8 8 8 6
Urban-traffic type µg/m3 50 50 43 39 39 37 41 44 41 37
Ljubljana center µg/m3 49 47 41 38 39 36 42 49 38 36
Maribor center µg/m3 50 53 45 39 39 38 39 39 44 38
Rural/Agricultural type µg/m3 np np np np np np np np np np
Murska Sobota - Rakičan µg/m3 np np np np np np np np np np
Rural/Industrial type µg/m3 7 7 10 10 4 5 6 7 6 6
- Zavodnje µg/m3 3 5 11 9 5 7 7 6 7 6
- Kovk µg/m3 10 8 8 11 2 4 7 9 7 6
- Vnajnarje µg/m3 np np np np np 4 3 5 4 5
annual limit value µg/m3 40 40 40 40 40 40 40 40 40 40
2002 2003 2004 2005 2006 2007 2008 2009 2010 2011
Urban background µg/m3 27 29 26 26 27 25 25 25 28 27
Ljubljana Bežigrad µg/m3 29 32 29 27 29 28 29 31 35 31
Celje µg/m3 24 27 24 26 28 23 21 22 26 25
Nova Gorica µg/m3 27 27 25 24 24 25 30 28 29 28
Koper µg/m3 np np np np np np 21 19 21 22
Suburban background µg/m3 28 20 18 15 16 15 16 13 14 13
Trbovlje µg/m3 28 32 27 24 23 22 23 17 20 17
- Škale µg/m3 np 8 9 5 9 8 8 9 8 8
Urban-traffic type µg/m3 36 37 31 33 39 37 34 32 49 45
Ljubljana center µg/m3 np np np np np np np np 63 55
Maribor center µg/m3 36 37 31 33 39 37 34 32 34 34
Rural/Agricultural type µg/m3 14 15 11 14 15 17 16 14 np 16
Murska Sobota - Rakičan µg/m3 14 15 11 14 15 17 16 14 np 16
Rural/Industrial type µg/m3 6 5 8 6 7 7 7 6 6 9
- Zavodnje µg/m3 np 6 5 3 4 3 3 4 5 9
- Kovk µg/m3 6 3 13 10 12 12 12 9 9 11
- Vnajnarje µg/m3 6 5 5 4 5 5 5 4 4 7
annual limit value µg/m3 40 40 40 40 40 40 40 40 40 40
2012
Urban background µg/m3 23
Ljubljana Bežigrad µg/m3 22
Celje µg/m3 27
Nova Gorica µg/m3 26
Koper µg/m3 18
Suburban background µg/m3 12
Trbovlje µg/m3 17
- Škale µg/m3 7
Urban-traffic type µg/m3 43
Ljubljana center µg/m3 52
Maribor center µg/m3 33
Rural/Agricultural type µg/m3 19
Murska Sobota - Rakičan µg/m3 19
Rural/Industrial type µg/m3 8
- Zavodnje µg/m3 8
- Kovk µg/m3 6
- Vnajnarje µg/m3 10
annual limit value µg/m3 40
Figure ZR06-3: Critical values ​​for NOx for the protection of plants (annual limited value of  concentration of NOx in the natural environment 30 µg NOx /m3) 
Sources:

Database from the National network for monitoring air quality (DMKZ), Slovenian Environmental Agency; Database of automatic measurement measuring network TPP, TPP Trbovlje the Ljubljana, Milan Vidmar Electric Institute ,2011.

Note to Figure ZR6-2: Measuring Station Ljubljana center, which is operated by the Municipality of Ljubljana, has moved from its location at the intersection of Figovec to Vošnjak and Tivoli streets at the end of 2009. The station was renovated in accordance with the requirements of the law. Data for the new station Ljubljana center will be available from 2010.

np = no data

Show data
1997 1998 1999 2000 2001 2002 2003 2004 2005 2006
Urban background µg/m3 np np np np 44 42 45 43 43 45
Ljubljana Bežigrad µg/m3 np np np np np 48 49 46 43 45
Celje µg/m3 np np np np 44 37 44 41 45 46
Nova Gorica µg/m3 np np np np np 41 43 43 41 43
Koper µg/m3 np np np np np np np np np np
Suburban background µg/m3 np np 9 30 8 35 33 29 24 25
Trbovlje µg/m3 np np np 50 np 52 54 47 41 39
- Škale µg/m3 9 9 8 18 11 10 6 10
Urban-traffic type µg/m3 np np np np 68 61 61 54 60 71
Ljubljana center µg/m3 np np np np 64 np np np np np
Maribor center µg/m3 np np np np 72 61 61 54 60 71
Rural/Agricultural type µg/m3 np np np np np 19 20 17 20 23
Murska Sobota - Rakičan µg/m3 np np np np np 19 20 17 20 23
Rural/Industrial type µg/m3 7 6 8 9 7 7 6 10 7 8
- Zavodnje µg/m3 9 8 7 9 8 7 7 5 5
- Kovk µg/m3 6 7 11 9 7 7 5 17 12 14
- Vnajnarje µg/m3 5 3 6 5 6 6 5 5 5
annual limit value for protection of vegetation µg/m3 30 30 30 30 30 30 30 30 30 30
2007 2008 2009 2010 2011 2012
Urban background µg/m3 43 43 45 50 47 44
Ljubljana Bežigrad µg/m3 45 52 57 64 56 47
Celje µg/m3 40 40 47 53 47 50
Nova Gorica µg/m3 44 50 53 56 57 50
Koper µg/m3 np 28 24 28 28 28
Suburban background µg/m3 26 25 23 25 22 21
Trbovlje µg/m3 38 40 37 40 33 32
- Škale µg/m3 13 10 9 9 10 9
Urban-traffic type µg/m3 70 63 61 95 88 81
Ljubljana center µg/m3 np np np 122 105 96
Maribor center µg/m3 70 63 61 68 70 65
Rural/Agricultural type µg/m3 24 22 20 np 28
Murska Sobota - Rakičan µg/m3 24 22 20 np 28
Rural/Industrial type µg/m3 10 7 6 7 11 9
- Zavodnje µg/m3 11 6 5 7 11 10
- Kovk µg/m3 14 10 8 11 13 7
- Vnajnarje µg/m3 5 5 6 4 8 11
annual limit value for protection of vegetation µg/m3 30 30 30 30 30 30

Goals

Methodology

Last modified
02.12.2013
Author(s)

Tanja Koleša, Dijana Nježić, Slovenian Environment Agency;