Year Sulphur-dioxide (SO2), μg/m³ Nitrogen-dioxide (NO2), μg/m³ Lead (Pb), ng/m³ Ammonia (NH3), μg/m³ Nitric acid (HNO3), μg/m³ Carbon-dioxide (CO2), ppm Tropospheric ozone (O3), ppb
K-pusztaa Farkasfab Nyírjesc K-pusztad Farkasfae Nyírjesc K-pusztaf K-pusztaf Farkasfag Nyírjesh K-pusztaf Farkasfag Nyírjesh K-pusztaf Hegyhátsáli K-pusztaf Farkasfag Nyírjesh
1985 25.4 .. .. 9.8 .. .. 45.1 0.9 .. .. 1.8 .. .. .. .. .. .. ..
1986 15.2 .. .. 9.6 .. .. 34.2 0.8 .. .. 1.5 .. .. .. .. .. .. ..
1987 22.2 .. .. 9.1 .. .. 24.7 0.5 .. .. 1.8 .. .. .. .. .. .. ..
1988 10.2 .. .. 9.7 .. .. 28.2 0.8 .. .. 1.6 .. .. .. .. .. .. ..
1989 9.8 .. .. 8.3 .. .. 29.9 1.3 .. .. 2.1 .. .. 358 .. .. .. ..
1990 5.5 .. .. 8.1 .. .. 35.0 1.2 .. .. 2.2 .. .. 354 .. .. .. ..
1991 9.1 .. .. 7.4 .. .. 34.7 1.0 .. .. 1.6 .. .. 359 .. .. .. ..
1992 9.0 .. .. 7.0 .. .. 29.5 1.1 .. .. 1.8 .. .. .. .. .. .. ..
1993 7.0 .. .. 6.0 .. .. 32.9 1.1 .. .. 3.0 .. .. 358 .. .. .. ..
1994 7.0 .. .. 7.0 .. .. 27.2 1.2 .. .. 2.9 .. .. 362 .. .. .. ..
1995 5.0 .. .. 5.9 .. .. 24.9 0.9 .. .. 1.9 .. .. 364 363 31.9 .. ..
1996 5.5 .. .. 6.5 .. .. 28.1 0.8 .. .. 1.4 .. .. .. .. 32.0 .. ..
1997 10.6 .. .. 8.3 .. .. 24.2 1.4 .. .. 1.9 .. .. 367 367 37.3 38.2 ..
1998 8.3 4.9 17.3 5.9 6.5 2.6 23.0 1.0 .. .. 1.1 .. .. 370 372 38.9 34.2 34.9
1999 6.8 3.6 19.6 5.7 7.4 2.8 27.6 1.1 .. .. 1.3 .. .. 374 373 33.4 30.9 36.1
2000 5.7 2.5 16.6 5.3 4.7 4.8 ..
..j
 .. .. 1.2 .. .. .. 371 35.0 40.4 31.8
2001 5.1 2.1 9.4 5.7 6.5 3.6 ..
..j
 .. .. 1.0 .. .. .. .. 32.0 .. 22.1
2002 4.4 2.2 8.0 5.4 6.4 2.9 .. 0.5 .. .. 0.9 .. .. .. 376 33.2 .. 25.7
2003 4.8 2.3 6.2 5.5 6.3 2.5 .. 1.7 .. .. 1.2 .. .. .. 382 34.4 ..
..j
2004 3.4 1.5 4.5 5.0 5.1 .. .. 1.3 0.8 0.3 0.9 0.9 1.1 .. .. 28.2 .. 32.3
2005 2.3
..k
 3.0 4.6
..k
 2.8 .. 1.7 .. 0.5 1.1 .. 1.2 .. 386 26.9 .. 34.4
2006 1.8
..k
 3.0 5.9
..k
 3.0 .. 1.5 0.9 0.5 0.8 0.9 1.0 .. 391 28.6 .. 43.3
2007 1.4 0.8 2.3 5.2 4.7 2.7 .. 1.6 0.7 0.4 0.9 1.9 0.9 .. 388 30.5 32.2 41.2
2008 2.8 1.0 2.5 6.2 4.6 2.9 .. 1.9 0.7 0.5 1.4 0.6 0.9 .. 389 30.3 29.7 43.8
2009 2.7 1.3 3.1 6.2 4.1 2.7 7.0 1.6 0.6 0.4 1.3 0.6 1.2 .. 392 29.4 27.2 45.8
2010 2.4 1.0 2.3 7.5 4.0 2.4 7.6 1.3 0.5 0.4 1.6 0.5 0.9 .. 395 26.7 27.8 38.7
2011 2.7 0.9 3.5 7.2 4.0 2.6 8.1 1.6 0.7 0.5 1.4 1.0 1.3 .. 397 29.2 31.6
..j
2012 2.5 1.0 2.6 5.9 3.7 3.2 7.7 1.5 0.6 0.4 1.1 0.7 1.0 .. 398 32.2 32.2 39.8
2013 1.7 0.7 2.4 4.6 3.6 2.7 6.7 1.7 0.6 0.3 1.1 0.9 0.8 .. 402 29.0 33.5 34.3
2014 1.6 0.8 3.2 4.1 3.1 2.6 6.9 2.1 0.8 0.6 0.9 0.8 0.7 .. 403 25.8 30.2 32.3
2015 1.3 0.5 3.1 4.3 3.4 2.6 7.9 1.8 0.7 0.6 0.8 0.7 0.8 .. 406 25.6
..j
 37.2
2016 1.5 0.5 2.9 3.7 3.2 2.7 7.2 1.9 0.8 0.6 1.0 0.9 0.9 .. 408 22.9 25.6 33.1
2017 1.4 0.7
..j
 3.9 3.2
..j
 7.0 1.9 0.9
..j
 1.1 1.1
..j
 .. 412
..j
..j
..j
2018 1.3 0.7 5.8 3.8 3.5 2.7 7.4 2.1 0.9 0.7 0.9 0.9 1.0 .. 413 35.3 28.4
..j
2019 1.8
..l
..j
 6.8
..l
..j
 6.7 2.0
..l
 1.0 0.9
..l
 1.3 .. 414 31.6
..j
..j
2020 1.2 .. 7.0 6.1 .. 4.1 5.4 2.1 .. 0.7 0.6 .. 0.6 .. 417 26.2
..j
..j
2021 1.4 .. 8.1 7.7 .. 4.0 1.9 2.2 .. 0.7 0.6 .. 0.5 .. 420 28.7 29.6 42.2
2022 0.9 .. 8.1 9.2 .. 4.0 6.5 2.1 .. 0.8 0.5 .. 0.6 .. 424 28.5 29.6 41.2
2023 1.0 .. 9.7 6.3 .. 3.2
..j
 2.0 .. 0.6 0.6 .. 0.4 .. 424 27.7 28.3 40.9

Footnotes

*Data stem from sampling excluding trophospheric ozone. More information is available at https://legszennyezettseg.met.hu/en.
a46° 58' 3'' N, 19° 33' 11'' E, 127 m From 2019 according to the data of the monitoring network.
b46° 54' 37'' N, 16° 18' 34'' E, 312 m From 2019 according to the data of the monitoring network.
c47° 52’ N, 19° 57' E, 702 m From 2019 according to the data of the monitoring network.
d46° 58' 3'' N, 19° 33' 11'' E, 127 m From 2019 according to the data of the monitoring network.
e46° 54' 37'' N, 16° 18' 34'' E, 312 m From 2019 according to the data of the monitoring network.
f46° 58' 3'' N, 19° 33' 11'' E, 127 m
g46° 54' 37'' N, 16° 18' 34'' E, 312 m
h47° 52’ N, 19° 57' E, 702 m
i46° 57’ N, 16° 39' E, 248 m
jData can not be evaluated because of technical reasons (insufficient number of measurements).
kSampling was paused at Farkasfa measuring station from 2005 to 2006.
lThere has been no data in Farkasfa since 1. May 2019.
Source: HungaroMet Hungarian Meteorological Service.

Explanation of symbols

..
Datum not available.
__, |
Break in series (limited comparability).
green number
Revised datum.
.