Station 2003a 2004b 2005b 2006b 2007b 2008b 2009b 2010b 2011c 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022
Ajka, Bródy Imre u.
1 year average immission, µg/m³d 14.8 15.8 15.8 15.0 14.4 12.8 13.0 14.7 21.0 16.1 18.9
..e
 20.4 18.2 18.7 17.4 16.3 15.2 17.1 21.5
Hourly limit value excess, %f 0.00 0.09 0.00 0.01 0.03 0.05 0.00 0.01 x x x x x x x x x x x x
Békéscsaba, Kolozsvári u.g
1 year average immission, µg/m³d .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. 17.2
Hourly limit value excess, %f .. .. .. .. .. .. .. .. x x x x x x x x x x x x
Budapest, Baross térh
1 year average immission, µg/m³d
..e
 123.9 130.6 125.9 120.8 .. .. .. .. .. .. .. .. .. .. .. .. .. .. ..
Hourly limit value excess, %f
..e
 12.76 14.97 13.49 13.65 .. .. .. x x x x x x x x x x x x
Budapest, Budatétényi
1 year average immission, µg/m³d .. .. .. .. .. .. 115.4 60.2 53.3
..e
 27.6
..e
..e
..e
..e
..e
 40.1 34.5 34.5 33.9
Hourly limit value excess, %f .. .. .. .. .. .. 4.80 3.02 x x x x x x x x x x x x
Budapest, Csepel
1 year average immission, µg/m³d .. 46.1 63.7 85.7 57.3 47.9 37.9 52.9 61.5
..e
..e
..e
..e
..e
 30.5
..e
 39.6 31.7 37.9 35.8
Hourly limit value excess, %f .. 2.10 5.33 9.55 3.75 2.90 1.91 2.53 x x x x x x x x x x x x
Budapest, Erzsébet tér
1 year average immission, µg/m³d .. 119.8 132.4 133.6 99.6 101.6 93.2 97.7 102.5
..e
..e
..e
..e
..e
 90.0 72.5 70.8 38.7 36.5 35.0
Hourly limit value excess, %f .. 12.60 16.27 16.42 7.54 6.94 6.24 6.12 x x x x x x x x x x x x
Budapest, Gergely u.
1 year average immission, µg/m³d ..
..e
 55.9 59.0 59.5 57.2 58.9 60.2 66.9 52.3
..e
..e
..e
..e
..e
..e
 50.1 48.0 46.7 48.2
Hourly limit value excess, %f ..
..e
 3.29 3.51 3.81 3.59 3.34 3.06 x x x x x x x x x x x x
Budapest, Gilice tér
1 year average immission, µg/m³d 57.6 42.6 63.0 55.8 40.1 39.3 39.6 49.6 45.3 45.8 28.8 37.2 46.6 42.6 42.0 37.5 40.7 34.3 37.4 36.0
Hourly limit value excess, %f 3.35 1.03 4.91 3.69 1.54 1.06 1.21 2.67 x x x x x x x x x x x x
Budapest, Honvéd telep
1 year average immission, µg/m³d .. 50.3 56.6 76.4 66.9 50.4 43.1 49.1 52.2 43.2 36.7
..e
..e
..e
..e
..e
 48.8 40.4 41.5 33.3
Hourly limit value excess, %f .. 2.50 3.44 7.29 5.53 3.25 1.78 2.31 x x x x x x x x x x x x
Budapest, Káposztásmegyer
1 year average immission, µg/m³d .. .. .. .. .. .. .. 50.9 42.8 22.4 36.6
..e
..e
 66.0
..e
..e
 37.4 37.0 38.9 36.7
Hourly limit value excess, %f .. .. .. .. .. .. .. 4.58 x x x x x x x x x x x x
Budapest, Kosztolányi D. tér
1 year average immission, µg/m³d .. 86.0 152.2 129.5 104.8 98.7 93.6 94.6 92.6 87.1 90.7 69.6 61.3 68.7
..e
 64.9 69.2 58.7 55.5 54.3
Hourly limit value excess, %f .. 7.20 23.03 17.08 10.80 9.89 8.34 8.41 x x x x x x x x x x x x
Budapest, Kőrakás park
1 year average immission, µg/m³d .. 54.2 60.5 60.6 58.5 58.6 44.9 49.4 50.1 44.4 39.0 43.5 43.3 47.8 53.0 48.3 50.9 39.7 44.8 42.8
Hourly limit value excess, %f .. 2.60 4.42 4.48 4.89 4.48 2.10 3.02 x x x x x x x x x x x x
Budapest, Pesthidegkút
1 year average immission, µg/m³d .. 35.8 45.0 50.2 34.2 32.0 28.4 30.8 34.1 30.3
..e
..e
 31.2 27.9 32.0 28.2 25.8 29.8 26.6 22.0
Hourly limit value excess, %f .. 8.50 2.07 2.68 1.09 1.24 0.95 0.95 x x x x x x x x x x x x
Budapest, Széna tér
1 year average immission, µg/m³d .. 99.6 125.8 109.5 101.2 101.0 79.3 89.8 103.1
..e
 93.8 95.5 106.6 92.4 99.6 93.5 96.5 69.9 77.9 66.4
Hourly limit value excess, %f .. 8.50 15.15 12.20 9.52 8.63 6.10 7.36 x x x x x x x x x x x x
Budapest, Teleki térj
1 year average immission, µg/m³d .. .. .. .. 89.6 74.1 67.3 69.3 71.0 62.0 65.7 69.4 70.8 70.7 72.3 74.2 69.4 60.3 61.3 59.8
Hourly limit value excess, %f .. .. .. .. 9.12 7.32 4.84 5.30 x x x x x x x x x x x x
Budapest, Tétényk
1 year average immission, µg/m³d .. .. 78.3 81.0 74.6 95.6 75.0 .. .. .. .. .. .. .. .. .. .. .. .. ..
Hourly limit value excess, %f .. .. 8.43 8.30 7.45 9.18 5.10 .. x x x x x x x x x x x x
Debrecen, Hajnal u.
1 year average immission, µg/m³d .. .. .. .. .. .. 74.7 71.6 73.6 75.2 .. 73.3 74.8 75.8 74.6 67.1 76.0 59.3 59.8 53.9
Hourly limit value excess, %f .. .. .. .. .. .. 4.46 4.16 x x x x x x x x x x x x
Debrecen, Kalotaszeg tér
1 year average immission, µg/m³d 34.0 20.7 36.3 29.1 25.5 30.6 26.3 27.3 30.0 28.2 28.6 33.7 32.8 36.4 27.1 32.5 31.4 26.4 31.2 25.8
Hourly limit value excess, %f 1.49 0.43 1.47 0.95 0.59 0.95 0.57 0.69 x x x x x x x x x x x x
Debrecen, Klinika
1 year average immission, µg/m³d .. 25.7 25.6 26.5 24.7 25.0 35.7 35.6 37.8 37.4 31.7 33.0 31.0 30.1 28.8 31.4 29.5 29.5 31.4 17.0
Hourly limit value excess, %f .. 0.20 0.27 0.41 0.17 0.41 0.94 0.57 x x x x x x x x x x x x
Dorog, Zsigmondy lakótelep
1 year average immission, µg/m³d 35.0 36.1 37.3 37.4 28.3 26.0 24.8 23.3 24.7
..e
..e
 19.5 35.1 20.6 24.8
..e
..e
 37.6
..e
..e
Hourly limit value excess, %f 0.18 0.34 0.16 0.09 0.07 0.02 0.10 0.08 x x x x x x x x x x x x
Dunaújváros, Köztársaság út
1 year average immission, µg/m³d 20.3 19.8 22.0 25.2 22.8 22.6 23.7 21.3 26.8 25.6 23.2 32.0 25.2 23.6 28.1 28.1 28.6 28.3 26.0 20.0
Hourly limit value excess, %f 0.32 0.36 0.48 0.58 0.38 0.30 0.33 0.21 x x x x x x x x x x x x
Eger, Katona térl
1 year average immission, µg/m³d 48.5 46.5 49.1 44.3 45.3 46.6 40.3 44.2 53.8 37.3 .. .. .. .. .. .. .. .. .. ..
Hourly limit value excess, %f 1.78 0.92 1.09 0.90 1.06 0.94 0.77 1.26 x x x x x x x x x x x x
Eger 2, Malomárok u.m
1 year average immission, µg/m³d .. .. .. .. .. .. .. .. .. 37.8 24.8 26.7 27.9 26.7 29.3 30.5 26.0 22.6 27.3 21.9
Hourly limit value excess, %f .. .. .. .. .. .. .. .. x x x x x x x x x x x x
Esztergom, Petőfi Sándor u.
1 year average immission, µg/m³d .. .. 29.5 31.8 28.1 41.7 41.2 31.3 22.5 24.2 18.7 16.9 18.9 17.6 19.3 17.0 16.2 17.1 17.5 15.4
Hourly limit value excess, %f .. .. 0.71 0.85 0.59 3.62 3.30 2.29 x x x x x x x x x x x x
Győr, Ifjúság körút
1 year average immission, µg/m³d 66.1 47.6 47.0 48.3 49.5 43.3 60.3 40.7 42.1 34.7 36.4 41.5 44.3 42.3 40.8 41.9 44.9 27.5
..e
..e
Hourly limit value excess, %f 2.30 1.35 1.16 1.13 1.66 1.12 1.70 1.26 x x x x x x x x x x x x
Győr, Szent István út
1 year average immission, µg/m³d 82.5 79.6 76.0 73.6 69.2 63.9 40.4 60.8 43.0 50.0 46.9 53.5 56.0 53.1 55.5 48.9
..e
 41.2 41.8 37.5
Hourly limit value excess, %f 6.08 5.11 4.20 3.76 2.97 2.60 0.90 2.22 x x x x x x x x x x x x
Kazincbarcika, Egressy Béni út
1 year average immission, µg/m³d 32.7 24.4 23.9 26.4 24.0 25.5 26.5 23.3 20.2 19.8 18.8 20.1 20.6 21.6 24.6 21.6 20.3 16.3 23.7 21.3
Hourly limit value excess, %f 0.17 0.02 0.01 0.03 0.05 0.02 0.12 0.01 x x x x x x x x x x x x
Kecskemét, Tóth László sétány
1 year average immission, µg/m³d .. .. .. .. .. ..
..e
 19.9 15.1 10.7
..e
..e
..e
 16.3 28.3 26.3 27.0 19.6 21.1 16.0
Hourly limit value excess, %f .. .. .. .. .. ..
..e
 0.16 x x x x x x x x x x x x
Komló, Templom tér
1 year average immission, µg/m³d 76.0 53.8 46.2 .. 81.9 39.4 51.3 41.0 39.8 52.8
..e
..e
..e
 27.4
..e
..e
 26.3
..e
 26.2 22.4
Hourly limit value excess, %f 6.79 4.36 1.43 .. 9.35 2.17 0.39 0.33 x x x x x x x x x x x x
Miskolc, Alföldi u.
1 year average immission, µg/m³d .. 47.7 47.5 41.5 31.3 33.9 35.8 37.3 37.2 35.0 30.8 34.7 33.3 31.0 36.3 33.0 32.2 29.6 39.6 21.9
Hourly limit value excess, %f .. 1.80 2.26 1.97 0.81 0.87 1.40 1.67 x x x x x x x x x x x x
Miskolc, Búza tér
1 year average immission, µg/m³d 108.6 117.3 119.8 119.2 98.4 88.9 81.5 80.5 74.2 74.1 69.4 72.9 84.9 81.0 80.8 77.9 78.6 70.0 71.1 63.6
Hourly limit value excess, %f 12.34 15.13 16.71 15.34 10.03 7.76 5.58 5.97 x x x x x x x x x x x x
Miskolc, Lavotta u.
1 year average immission, µg/m³d .. 33.5 40.3 49.3 22.6 36.3 25.5 22.4 26.0 30.7 29.0 27.3 27.4 25.6 27.0 22.1 25.6 19.0 28.9 22.4
Hourly limit value excess, %f .. 0.50 66.00 1.34 0.17 0.69 0.18 0.07 x x x x x x x x x x x x
Mosonmagyaróvár, Gulyás Lajos u. 5.
1 year average immission, µg/m³d .. .. .. .. .. .. .. .. .. ..
..e
 20.4 23.6 22.0 22.1 20.7 24.5 15.1 15.1 21.3
Hourly limit value excess, %f .. .. .. .. .. .. .. .. x x x x x x x x x x x x
Nyíregyháza, Széna tér
1 year average immission, µg/m³d 52.8 45.6 63.0 57.0 45.5 45.4 37.8 38.7 46.3 41.7 46.5 48.8 46.4 45.3 44.2 47.1 46.7 36.2 46.3 37.5
Hourly limit value excess, %f 3.12 2.15 5.11 4.41 2.50 2.42 1.48 1.98 x x x x x x x x x x x x
Oszlár, Petőfi u.
1 year average immission, µg/m³d .. 22.9 18.8 23.4 16.5 19.6 15.4 15.7 17.3 17.4 14.6 20.3 17.4 15.3 15.4 14.1 14.1 13.0 13.4 12.9
Hourly limit value excess, %f .. 0.00 0.04 0.00 0.00 0.00 0.00 0.00 x x x x x x x x x x x x
Pécs, Boszorkány u.
1 year average immission, µg/m³d 69.3 28.1 31.8 20.3 31.3 18.9 16.7 17.6 23.5 21.4 25.7 22.5 26.3 23.7 25.4 27.4 24.9 16.2 19.6 23.2
Hourly limit value excess, %f 7.12 1.25 1.53 0.23 1.31 0.24 0.18 0.29 x x x x x x x x x x x x
Pécs, Légszeszgyár u.n
1 year average immission, µg/m³d 130.0 90.3 57.3 65.4 124.6 85.2 .. .. .. .. .. .. .. .. .. .. .. .. .. ..
Hourly limit value excess, %f 15.13 6.47 1.90 3.31 16.00 5.64 .. .. x x x x x x x x x x x x
Pécs, Nevelési Központ
1 year average immission, µg/m³d .. .. ..
..e
 17.6 22.6 12.8 12.9 18.1 19.7
..e
..e
 29.5
..e
 27.5 25.4 24.9 23.3 24.4 21.9
Hourly limit value excess, %f .. .. ..
..e
 0.11 0.42 0.05 0.10 x x x x x x x x x x x x
Pécs, Szabadság út
1 year average immission, µg/m³d 107.8 119.5 89.3 71.5 124.8 66.8 66.3 92.5 90.8 75.1 84.2
..e
 112.4 113.9 112.7 114.0 117.9 95.0 104.3 101.1
Hourly limit value excess, %f 12.41 16.15 6.23 5.53 13.83 2.25 5.28 7.22 x x x x x x x x x x x x
Putnok, Bajcsy-Zsilinszky úto
1 year average immission, µg/m³d .. 28.7 27.4 22.9 20.9 20.6 14.3 11.8 8.9 14.6 14.4 15.4 14.0
..e
..e
 17.7 12.5 7.3 12.0 11.3
Hourly limit value excess, %f .. 0.00 0.00 0.00 0.00 0.00 0.00 0.00 x x x x x x x x x x x x
Sajószentpéter, Sport u.
1 year average immission, µg/m³d 23.5 22.6 22.0 23.1 21.2 20.8 22.0 22.4 19.8 21.8 17.7 21.6 21.6 21.0 23.5 21.7 19.9 18.1 19.2 18.5
Hourly limit value excess, %f 0.03 0.03 0.01 0.00 0.00 0.00 0.00 0.01 x x x x x x x x x x x x
Salgótarján, Vasvári Pál út
1 year average immission, µg/m³d
..e
 36.6 32.6 33.3 28.8 27.3 24.1 25.9 23.8 26.1 22.1 19.1
..e
 20.4 19.6 22.7 26.2 25.0 21.9 13.6
Hourly limit value excess, %f
..e
 0.75 0.62 0.61 0.43 0.39 0.20 0.49 x x x x x x x x x x x x
Sopron, Kodály Zoltán tér
1 year average immission, µg/m³d .. 23.6 27.1 29.3 23.7 23.8 26.9 20.7 27.9 18.2 23.3 23.4 23.6 23.1 24.5 21.1 23.0 19.0 18.5
..e
Hourly limit value excess, %f .. 0.39 0.47 0.27 0.15 0.20 0.20 0.01 x x x x x x x x x x x x
Százhalombatta, Búzavirág tér
1 year average immission, µg/m³d 26.3 19.9 24.1 25.5 23.5 24.6 25.1 30.0 29.3 18.8 21.5
..e
 22.9 20.7 23.5 22.3 22.0 22.3 21.4 26.4
Hourly limit value excess, %f 0.09 0.13 0.21 0.07 0.10 0.11 0.10 0.35 x x x x x x x x x x x x
Százhalombatta2, Erőmű út
1 year average immission, µg/m³d .. .. 35.5 35.2 34.6 29.2 29.7 27.5 .. .. .. .. .. .. .. .. .. .. 21.4 24.2
Hourly limit value excess, %f .. .. 1.15 0.69 0.62 0.13 0.16 0.22 x x x x x x x x x x x x
Százhalombatta3, Liszt Ferenc sétány
1 year average immission, µg/m³d .. .. 25.2 26.1 25.3 23.3 20.3 22.2 26.7 22.1 19.7
..e
..e
..e
..e
 25.1 23.2 26.5 17.5 22.3
Hourly limit value excess, %f .. .. 38.00 0.20 0.19 0.15 0.01 0.07 x x x x x x x x x x x x
Szeged, Kossuth L. sugárútp
1 year average immission, µg/m³d 54.4 56.3 60.7 60.0 67.3 70.6 56.6 49.3 78.2 .. .. .. .. .. .. .. .. .. .. ..
Hourly limit value excess, %f 2.67 2.73 2.92 2.15 4.16 4.38 1.70 2.03 x x x x x x x x x x x x
Szeged 2, Rózsa u.q
1 year average immission, µg/m³d .. .. .. .. .. .. .. .. 31.3 26.9 27.4 25.4 25.4 23.7 20.8 22.6 23.5 20.5 19.8 20.0
Hourly limit value excess, %f .. .. .. .. .. .. .. .. x x x x x x x x x x x x
Szentgotthárd, Füzes u. 7.
1 year average immission, µg/m³d .. .. .. .. .. .. .. .. .. ..
..e
 15.8 21.0 22.7 20.4 15.7 11.2
..e
 12.4
..e
Hourly limit value excess, %f .. .. .. .. .. .. .. .. x x x x x x x x x x x x
Székesfehérvár, Palotai út
1 year average immission, µg/m³d .. 46.6 50.0 48.1 32.6 38.3 36.3 41.1 35.2 42.4 36.6 36.3 37.4 35.9 40.6 41.5 40.2 32.3 31.4 34.7
Hourly limit value excess, %f .. 2.40 2.72 1.52 0.64 1.57 1.11 2.13 x x x x x x x x x x x x
Szolnok, Ady Endre út
1 year average immission, µg/m³d 38.5 31.1 38.9 42.4 .. .. 48.5 46.8 49.7 44.5 39.5 46.2 46.9 44.0 46.3 49.5 44.4 43.1 40.7 36.5
Hourly limit value excess, %f 0.00 0.16 0.77 0.50 .. .. 0.47 0.37 x x x x x x x x x x x x
Szombathely, Markusovszky Lajos u.
1 year average immission, µg/m³d .. .. .. .. .. .. .. .. .. ..
..e
 20.0 22.2 22.5 24.3 20.5 20.8
..e
 12.7 16.0
Hourly limit value excess, %f .. .. .. .. .. .. .. .. x x x x x x x x x x x x
Tatabánya, Erdész u.r
1 year average immission, µg/m³d 50.0 43.9 59.2 45.6 42.7 47.0 43.7 37.7
..e
 .. .. .. .. .. .. .. .. .. .. ..
Hourly limit value excess, %f 1.38 1.14 2.25 1.78 1.84 1.77 0.90 1.72 x x x x x x x x x x x x
Tatabánya, Ságvári út
1 year average immission, µg/m³d 55.1 54.2 40.1 38.9 33.5 31.3 32.4 32.7 32.9 30.2 31.4 32.8 31.6 27.9 34.7 29.2 26.8 23.4 28.1 26.7
Hourly limit value excess, %f 3.12 3.38 0.72 0.50 0.40 0.19 0.20 0.28 x x x x x x x x x x x x
Tököl, Millenium park
1 year average immission, µg/m³d .. .. .. .. 40.8 30.1 31.6 32.5 32.8
..e
..e
..e
..e
 23.5 25.6 28.3
..e
 21.8 25.8 20.2
Hourly limit value excess, %f .. .. .. .. 1.97 0.60 0.50 1.01 x x x x x x x x x x x x
Vác, Görgey Artúr u.s
1 year average immission, µg/m³d 62.8 55.2 63.4 51.6 54.9 33.9 30.0 32.9 33.7 .. .. .. .. .. .. .. .. .. .. ..
Hourly limit value excess, %f 3.59 3.86 4.33 2.38 3.52 1.00 0.50 1.07 x x x x x x x x x x x x
Vác, Csányi krt.t
1 year average immission, µg/m³d .. .. .. .. .. .. .. .. 47.5
..e
..e
..e
..e
..e
..e
 31.1
..e
 26.0 50.1 27.8
Hourly limit value excess, %f .. .. .. .. .. .. .. .. x x x x x x x x x x x x
Várpalota, Szent István út
1 year average immission, µg/m³d
..e
 51.5 44.5 46.7 37.5 36.5 31.5 39.2 36.3
..e
 38.9 48.7 41.2 44.9 37.6 45.3 49.8 44.8 52.4 74.8
Hourly limit value excess, %f
..e
 3.22 2.09 2.15 0.65 0.78 0.16 0.99 x x x x x x x x x x x x
Veszprém, Kádár u.
1 year average immission, µg/m³d 27.6 26.4 36.9 34.9 37.6 32.6 31.2 32.2 35.1
..e
 32.6 33.3 33.3 30.3 29.8 33.2 32.9 27.3 28.6 32.8
Hourly limit value excess, %f 0.50 0.57 1.18 1.25 1.50 1.09 0.84 1.02 x x x x x x x x x x x x
Farkasfa (Rural background station)
1 year average immission, µg/m³d .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. ..
Hourly limit value excess, %f .. .. .. .. .. .. .. .. x x x x x x x x x x x x
Hernádszurdok, Gátőrház 3. (Rural background station)
1 year average immission, µg/m³d
..e
 18.2 17.0 12.5 12.0 8.7 8.4 13.4 16.4 18.6 14.1 15.2 16.1 14.5 16.0 15.9 12.8 9.8 9.3 8.1
Hourly limit value excess, %f
..e
 0.00 0.00 0.00 0.00 0.00 0.00 0.00 x x x x x x x x x x x x
Hortobágy (Rural background station)
1 year average immission, µg/m³d .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. 6.1 8.6
..e
Hourly limit value excess, %f .. .. .. .. .. .. .. .. x x x x x x x x x x x x
K-puszta (Rural background station)
1 year average immission, µg/m³d .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. 6.6 8.5
..e
Hourly limit value excess, %f .. .. .. .. .. .. .. .. x x x x x x x x x x x x
Nyírjes (Rural background station)
1 year average immission, µg/m³d .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. 4.6 4.5 4.5
Hourly limit value excess, %f .. .. .. .. .. .. .. .. x x x x x x x x x x x x
Rudabánya, Erdőszállás u. 5. (Rural background station)
1 year average immission, µg/m³d 16.0 14.0 20.7 15.3 12.2 12.4 10.8 14.8 15.2 10.8 10.7 10.8 10.1 10.2 11.5 11.6 8.8 9.1 14.8 12.9
Hourly limit value excess, %f 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 x x x x x x x x x x x x
Sarród, Fertőújlak (Rural background station)
1 year average immission, µg/m³d 9.6 9.4 8.5 10.7 11.5 12.3 13.6 12.5 11.5 11.8 10.3 7.8 10.9
..e
 10.5 7.8 6.8
..e
..e
..e
Hourly limit value excess, %f 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 x x x x x x x x x x x x

Footnotes

*More information is available at https://legszennyezettseg.met.hu/en.
aHourly limit value: 200 µg/m³ Annual limit value: 100 µg/m³
bHourly limit value: 200 µg/m³ Annual limit value: 70 µg/m³
cNew legislation 4/2011 (I. 14.) Ministry of RD regulation doesn't include limit value for NOx.
dIt is counted from 1 hourly averages.
eNumber of valid data does not fulfill the quality requirements of the laws in force.
fNumber of exceedences of the hourly limit value as a percentage of the total hourly averages.
gThis monitoring station has been measuring from 01 .02 .2022.
hMonitoring station of Baross tér operated until 14.06.2007., then the monitoring system was relocated to Budapest Teleki tér, because of the underground construction.
iBudapest Tétény measuring station was relocated to Budapest Budatétény in 2009. Measuring time from 03.09. 2009.
jThis monitoring station has been measuring from 25.08.2007. by the relocation of measuring station Budapest Baross tér.
kMeasuring station Budapest Tétény was relocated in 2009 to Budapest Budatétény. Measuring period: until 01.09.2009.
lMeasuring station Eger was relocated within the city in measuring station Eger2. Measuring period: until 30. 09. 2012.
mMeasuring station Eger was relocated within the city in Eger2 station. Measuring period from 01.10.2012.
nThe work of this measuring station was finished by the 1st January 2009.
oThe work of this measuring station was finished by the 21st August 2015.
pMeasuring station Szeged was relocated within the city in 2011. Measuring period: until 21. 03. 2011.
qMeasuring station Szeged was relocated within the city in 2011. Measuring period from 26. 03. 2011.
rThe work of this measuring station was finished by the 21st June 2011.
sMeasuring station Vác was relocated within the city in 2011. Measuring period until 11. 10. 2011.
tMeasuring station Vác was relocated within the city in 2011. Measuring period from 14. 10. 2011.
Source: Hungarian Meteorological Service Observation Department Air Quality Reference Centre.

Explanation of symbols

..
Datum not available.
0
Less than half of unit.
x
Not applicable.
.