Information about air quality in the Czech Republic

Information on the level ambient air pollution pursuant the Clean Air Act

Current overview of data from automated stations (non-verified data)

Updated: 2018-05-22 00:24 CEST

Region: Prague 2018-05-21 23:00 - 00:00 CEST SO2 NO2 CO PM10 O3 PM10 PM2,5
Code Name Classification Owner Air quality 1h
µg/m³
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8h
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     Centre of Prague 2 - good
AKALA Praha 8-Karlin traffic CHMI 2 - good 29.8 26.0 31.6
ALEGA Praha 2-Legerova traffic CHMI 2 - good 40.9 363 19.0 19.3 9.0
AREPA Praha 1-n. Republiky urban CHMI 25.8
ARIEA Praha 2-Riegrovy sady urban CHMI 24.0 5.0
ASMIA Praha 5-Smichov traffic CHMI 2 - good 23.9 35.0 27.1 21.0
AVRSA Praha 10-Vrsovice traffic CHMI 2 - good 31.0 22.7
AVYNA Praha 9-Vysocany traffic CHMI 3 - fair 25.8 18.0 72.0 22.0
     Periphery of Prague 3 - fair
AKOBA Praha 8-Kobylisy suburban CHMI 12.1 22.0 14.0
ALIBA Praha 4-Libus suburban CHMI 3 - fair 1.3 16.8 210 18.5 81.2 14.3 14.8
ASTOA Praha 5-Stodulky urban CHMI 3 - fair 21.0 88.2 18.2 16.0
ASUCA Praha 6-Suchdol suburban CHMI 3 - fair 22.0 98.6 14.7
ABREA Praha 6-Brevnov urban CHMI 1 - very good 15.1 17.0 17.0
ACHOA Praha 4-Chodov urban CHMI 1 - very good 13.8 7.0 14.0
ALERA Letiste Praha traffic Letiste Pr 2 - good 35.4 39.0 43.0 17.0
APRUA Praha 10-Prumyslova traffic CHMI 2 - good 12.2 21.0 22.9
Region: Stredocesky 2018-05-21 23:00 - 00:00 CEST SO2 NO2 CO PM10 O3 PM10 PM2,5
Code Name Classification Owner Air quality 1h
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SBERA Beroun traffic CHMI 2 - good 23.9 196 30.0 19.7 27.0
SKHOA Kutna Hora-Orebitska urban CHMI 1 - very good 15.9 12.0 19.7 9.0
SKLMA Kladno-stred mesta urban CHMI 3 - fair 13.0 94.8 18.5 7.0
SKLSA Kladno-Svermov urban CHMI 1 - very good 1.3 9.6 13.0 16.2
SMBOA Mlada Boleslav urban CHMI 3 - fair 9.9 14.0 95.4 13.4 13.0
SONRA Ondrejov rural CHMI 100.9
SPBRA Pribram-Brezové Hory urban CHMI 1 - very good 14.7 14.0 20.2
SRORA Rozdalovice-Ruska rural CHMI 1 - very good 5.1 10.9 11.0 14.5 6.0
STCSA Tobolka-Certovy schody rural VCs 9.9 196 99.4 11.0
Region: Jihocesky 2018-05-21 23:00 - 00:00 CEST SO2 NO2 CO PM10 O3 PM10 PM2,5
Code Name Classification Owner Air quality 1h
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CCBDA Ceske Budejovice urban CHMI 3 - fair 1.3 11.5 9.0 79.0 12.7 14.0
CCHUA Churanov rural CHMI 8.0 1.3 112.5
CHVOA Hojna Voda rural CHMI 3 - fair 15.0 99.6 11.5
CKOCA Kocelovice rural CHMI 91.6
CPRAA Prachatice suburban CHMI 2 - good 18.9 10.0 63.2 13.3
CTABA Tabor traffic CHMI 2 - good 20.9 214 10.0 51.1 15.0
Region: Plzensky 2018-05-21 23:00 - 00:00 CEST SO2 NO2 CO PM10 O3 PM10 PM2,5
Code Name Classification Owner Air quality 1h
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1h
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PKUJA Kamenny Ujezd rural CHMI 1 - very good 1.3 14.3 18.0 15.1 23.0
PPLAA Plzen-Slovany traffic MPl 3 - fair 5.1 11.3 336 14.0 91.8 13.2 13.0
PPLEA Plzen-stred traffic MPl 2 - good 5.3 26.4 15.0 14.8 8.0
PPLLA Plzen-Lochotin urban MPl 3 - fair 5.3 8.4 14.0 83.6 13.7 7.0
PPLVA Plzen-Doubravka suburban CHMI 3 - fair 4.5 9.9 9.0 85.4 14.0 1.0
PPMOA Plzen - mobil 18.10.2017 Plzeň - Mikulášské náměstí MPl 3 - fair 4.0 13.6 165 11.0 85.8 12.0 8.0
PPRMA Primda rural CHMI 99.4
Region: Karlovarsky 2018-05-21 23:00 - 00:00 CEST SO2 NO2 CO PM10 O3 PM10 PM2,5
Code Name Classification Owner Air quality 1h
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KCHMA Cheb suburban CHMI 1 - very good 4.0 16.8
KPRBA Prebuz rural CHMI 112.3
KSOMA Sokolov suburban CHMI 3 - fair 1.3 9.0 9.0 94.6 15.0 5.0
Region: Ustecky 2018-05-21 23:00 - 00:00 CEST SO2 NO2 CO PM10 O3 PM10 PM2,5
Code Name Classification Owner Air quality 1h
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1h
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8h
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UCHMA Chomutov urban CHMI 1 - very good 18.0 18.2
UDCMA Decin urban CHMI 2 - good 12.2 32.0 15.8 33.0
UDOKA Doksany rural CHMI 1.3 8.0 66.4
UKRUA Krupka rural CHMI 1 - very good 2.9 8.0 12.5
ULOMA Lom rural CHMI 1.3 6.7 30.0 17.2 19.0
ULTTA Litomerice urban CHMI 3 - fair 1.3 23.0 110.1 15.9
UMEDA Medenec rural CHMI 1 - very good 4.3 5.0 15.7
UMOMA Most urban CHMI 3 - fair 9.9 20.0 104.3 20.9 17.0
URVHA Rudolice v Horach rural CHMI 3 - fair 19.0 103.3 14.0
USNZA Sneznik rural CHMI 1.3 2.9 109.9
USTEA Steti urban MSTE 3 - fair 1.3 5.0 16.0 106.1 14.6 7.0
UTPMA Teplice urban CHMI 3 - fair 4.0 88.8 13.0 3.0
UTUSA Tusimice rural CHMI 3 - fair 1.3 10.3 22.0 89.2 20.4 19.0
UULDA Usti n.L.-Vseboricka traffic CHMI 1 - very good 14.5 266 19.0 17.1 10.0
UULKA Usti n.L.-Kockov suburban CHMI 3 - fair 1.3 3.6 19.0 113.5 11.8 16.0
UULMA Usti n.L.-mesto urban CHMI 3 - fair 1.3 9.9 17.0 88.4 18.3
Region: Liberecky 2018-05-21 23:00 - 00:00 CEST SO2 NO2 CO PM10 O3 PM10 PM2,5
Code Name Classification Owner Air quality 1h
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LCLMA Ceska Lipa urban CHMI 1 - very good 9.0 12.2
LFRTA Frydlant rural CHMI 1.3 98.0
LLILA Liberec Rochlice urban CHMI 3 - fair 3.5 13.4 21.0 79.4 11.9 13.0
LSOUA Sous rural CHMI 84.0
Region: Kralovehradecky 2018-05-21 23:00 - 00:00 CEST SO2 NO2 CO PM10 O3 PM10 PM2,5
Code Name Classification Owner Air quality 1h
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HHKBA Hradec Kralove-Brnen traffic CHMI 2 - good 44.2 273 15.0 17.5 14.0
HHKOK Hradec Kralove-observator suburban CHMI 96.0
HKRYA Krkonose-Rychory rural CHMI 112.5
HPLOA Polom rural CHMI 3 - fair 4.8 18.0 110.7 12.1
HTRTA Trutnov - Tkalcovska urban CHMI 1 - very good 17.0 16.0
Region: Pardubicky 2018-05-21 23:00 - 00:00 CEST SO2 NO2 CO PM10 O3 PM10 PM2,5
Code Name Classification Owner Air quality 1h
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EMTPA Moravska Trebova - Piaristicka. urban CHMI 2 - good 40.6 13.0 18.0 6.0
EPAOA Pardubice-Rosice suburban CHMI 4.8 14.7
EPAUA Pardubice Dukla urban CHMI 3 - fair 1.3 8.0 69.0 14.2 16.0
ESVRA Svratouch rural CHMI 107.3
Region: Vysocina 2018-05-21 23:00 - 00:00 CEST SO2 NO2 CO PM10 O3 PM10 PM2,5
Code Name Classification Owner Air quality 1h
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JJIHA Jihlava urban CHMI 2 - good 1.3 9.9 244 12.0 45.1 13.2 19.0
JJIZA Jihlava-Znojemska traffic ZU-Ostrava 2 - good 25.8 11.0 11.5 7.0
JKMYA Kostelni Myslova rural CHMI 95.2
JKOSA Kosetice rural CHMI 3 - fair 2.9 6.3 108 16.0 92.2 17.5 14.0
JTREA Trebic suburban CHMI 2 - good 27.0 13.2
JZNZA Zdar nad Sazavou urban ZU-Ostrava 1 - very good 15.0 12.5 7.0
Region: Jihomoravsky 2018-05-21 23:00 - 00:00 CEST SO2 NO2 CO PM10 O3 PM10 PM2,5
Code Name Classification Owner Air quality 1h
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BBDNA Brno - Detska nemocnice urban CHMI 3.1 19.0 16.0 23.0
BBMAA Brno-Arboretum urban SMBrno 2 - good 12.6 27.1 17.0
BBMLA Brno-Lany suburban SMBrno 3 - fair 5.9 8.4 116 25.8 102.9 13.0 10.5
BBMSA Brno-Svatoplukova traffic SMBrno 2 - good 26.2 23.7 22.2 9.8
BBMVA Brno-Vystaviste traffic SMBrno 2 - good 18.7 25.4 17.9
BBMZA Brno-Zvonarka traffic SMBrno 2 - good 9.9 306 22.7 38.7 27.9 8.5
BBNAA Brno-Masna urban ZU-Ostrava 2 - good 10.9 28.0 28.2 10.0
BBNIA Brno-Lisen urban CHMI 1 - very good 17.0 14.8 9.0
BBNVA Brno-Uvoz traffic CHMI 1 - very good 21.2 235 20.0 20.4 8.0
BBNYA Brno-Turany suburban CHMI 3 - fair 5.6 8.8 24.0 93.6 16.6 13.0
BHODA Hodonin urban ZU-Ostrava 1 - very good 14.0 12.2 7.0
BKUCA Kucharovice rural CHMI 94.6
BMISA Mikulov-Sedlec rural CHMI 3 - fair 1.3 10.3 18.0 81.8 14.5 17.0
BMOCA Sivice rural Ceskomorav 1 - very good 4.8 13.4 8.0 7.0 5.0
BMOKA Mokra rural Ceskomorav 1 - very good 16.0 13.0 7.0
BZNOA Znojmo suburban CHMI 1 - very good 14.2 10.0 16.4 3.0
Region: Olomoucky 2018-05-21 23:00 - 00:00 CEST SO2 NO2 CO PM10 O3 PM10 PM2,5
Code Name Classification Owner Air quality 1h
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MBELA Belotin rural CHMI 1 - very good 16.0 19.8 7.0
MJESA Jesenik-lazne rural CHMI 3 - fair 3.7 5.4 15.0 83.0 15.5
MOLJA Olomouc-Hejcin urban CHMI 1 - very good 11.9 20.0 20.2 18.0
MOLSA Olomouc-Smeralova urban ZU-Ostrava 1 - very good 14.0 15.6 8.0
MPRRA Prerov urban CHMI 6.4 29.0 21.0 21.0
MPSTA Prostejov urban CHMI 1 - very good 14.0 18.1
MSMSA Sumperk - 5.ZS urban MSUM 1 - very good 12.2 11.5 15.4 11.3 4.4
Region: Zlinsky 2018-05-21 23:00 - 00:00 CEST SO2 NO2 CO PM10 O3 PM10 PM2,5
Code Name Classification Owner Air quality 1h
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ZOTMA Otrokovice - mesto traffic MOTRO 325
ZSNVA Stitna n.Vlari rural CHMI
ZTNVA Tesnovice rural CHMI 3 - fair 5.1 9.9 9.0 84.4 19.0 15.0
ZUHRA Uherske Hradiste traffic CHMI 2 - good 17.4 291 33.0 20.7
ZVMZA Valasske Mezirici urban CHMI 2 - good 23.0 18.8 14.0
ZZLNA Zlin suburban CHMI 2 - good 3.5 11.7 18.0 62.8 15.2 15.0
ZZZSA Zlin-ZS Kvitkova urban MZLI 2 - good 19.9 20.5 57.1 15.3 10.7
Region: Moravskoslezsky 2018-05-21 23:00 - 00:00 CEST SO2 NO2 CO PM10 O3 PM10 PM2,5
Code Name Classification Owner Air quality 1h
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TBKRA Bily Kriz rural CHMI 3.2 2.1 104.5
TCERA Cervena hora rural CHMI 8.8 94.0
TCTNA Cesky Tesin urban CHMI 2 - good 1.3 34.6 18.0 28.5 20.0
TFMIA Frydek-Mistek suburban CHMI 1 - very good 19.1 15.0 18.1 15.0
THAOA Havirov urban ZU, SMHa 2 - good 39.0 31.5
THARA Havirov urban CHMI 2 - good 24.0 23.4 6.0
TKAOK Karvina-ZU traffic ZU-Ostrava 2 - good 14.2 28.0 29.3 16.0
TKARA Karvina urban CHMI 3 - fair 4.3 14.3 24.0 73.2 24.6 19.0
TNSVA Nosovice rural ONOS 2 - good 29.6 19.5 17.4 10.9
TOCBA Ostrava-Ceskobratrsk traffic CHMI 21.0 492
TOFFA Ostrava-Fifejdy urban CHMI 3 - fair 5.3 17.2 15.0 72.4 23.8
TOHBA Ostrava-Hrabova industrial ZU, MSK 3 - fair 16.0 32.9 725 51.0 31.2
TOKUA Ostrava-Kuncicky industrial ZU, MSK 2 - good 5.6 14.0 186 34.0 25.5
TOMHK Ostrava-Marianske Ho industrial SMOstrava 3 - fair 5.6 11.3 133 33.0 75.8 22.0
TOPDA Ostrava-Poruba, DD traffic SMOstrava 2 - good 12.4 22.0 25.6
TOPOA Ostrava-Poruba/CHMU suburban CHMI 13.6
TOPRA Ostrava-Privoz industrial CHMI 3 - fair 38.9 25.1 43.0 39.6 26.0
TOREK Ostrava-Radvanice ZU industrial SMOstrava 3 - fair 5.6 15.5 192 35.0 72.0 33.1 23.0
TOROK Ostrava-Radvanice OZO suburban SMOstrava 3 - fair 5.6 12.4 42.0 77.8 22.3
TOVKA Opava-Katerinky urban CHMI 2 - good 21.4 32.0 51.5 19.7 20.0
TOZRA Ostrava-Zabreh urban CHMI 1 - very good 16.0 26.2 10.0
TRYCA Rychvald urban CHMI 2 - good 5.1 11.9 30.0 22.5 16.0
TSTDA Studenka rural CHMI 2 - good 6.1 34.6 284 19.0 33.9 22.7 19.0
TTRKA Trinec-Kanada suburban MTR 2 - good 13.6 35.0 21.6
TTROA Trinec-Kosmos urban CHMI 3 - fair 23.0 66.0 15.7 15.0
TVERA Vernovice rural CHMI 1 - very good 3.7 15.5 16.0 20.9 17.0
TVRTA Vratimov industrial ZU, MSK 2 - good 5.6 13.6 332 36.0 30.2

CHMI is responsible for data completeness and quality only at the stations that are administered by CHMI (see the entry "Owner" indicated with the published data).

Current overview of data from Poland automated stations

These data are for operational reasons 2 hours delayed

Region: Malopolski 2018-05-21 21:00 - 22:00 CEST SO2 NO2 CO PM10 O3 PM10 PM2,5
Code Name Classification Owner Air quality 1h
µg/m³
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8h
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YKRAA Krakow urban MWIOS 33.1
YTARA Tarnow urban MWIOS 15.8
YTRZA Trzebinia urban MWIOS 423 12.0
YZAKA Zakopane urban MWIOS 406 19.6
Region: Opolskie 2018-05-21 21:00 - 22:00 CEST SO2 NO2 CO PM10 O3 PM10 PM2,5
Code Name Classification Owner Air quality 1h
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QKEKA Kedzierzyn-Kozle urban OWIOS 22.0
QOPOA Opole urban OWIOS
QZDZA Zdzieszowice urban OWIOS 30.0
Region: Dolnoslaskie 2018-05-21 21:00 - 22:00 CEST SO2 NO2 CO PM10 O3 PM10 PM2,5
Code Name Classification Owner Air quality 1h
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VDZRA Dzierzoniow urban DWIOS 17.9
VOSIA Osieczów rural DWIOS
VZASA Zabkowice Slaskie urban DWIOS 14.7
Region: Slaskie 2018-05-21 21:00 - 22:00 CEST SO2 NO2 CO PM10 O3 PM10 PM2,5
Code Name Classification Owner Air quality 1h
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WBIBA Bielsko Biala urban SWIOS 20.4
WCIEA Cieszyn urban SWIOS 141 22.0
WCZAA Czestochowa - Armii Krajowej traffic SWIOS 422 21.8
WCZBA Czestochowa - Baczyrskiego urban SWIOS 277 21.0
WDAGA Dabrowa Górnicza urban SWIOS 301 35.9
WGLIA Gliwice urban SWIOS 24.1
WKATA Katowice urban SWIOS 20.2
WRYBA Rybnik urban SWIOS 798 18.0
WSOSA Sosnowiec urban SWIOS
WTYCA Tychy urban SWIOS 15.3
WUSTA Ustron urban SWIOS 15.9
WWOZA Wodzislaw urban SWIOS 106 23.8
WZABA Zabrze urban SWIOS 310 23.4
WZLPA Zloty Potok rural SWIOS 15.6
WZYWA Zywiec urban SWIOS

Current overview of data from Austrian automated stations

Region: Wien 2018-05-21 23:00 - 00:00 CEST SO2 NO2 CO PM10 O3 PM10 PM2,5
Code Name Classification Owner Air quality 1h
µg/m³
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1AKHA Wien-AKH (Allgemeines Krankenhaus) traffic MSW 3 - fair 50.6 17.5 12.9 10.1
1AWHA Wien-A23-Wehlistraße traffic MSW 2 - good 5.3 47.7 170 20.8 16.9 11.0
1BELA Wien-Belgradplatz traffic MSW 3 - fair 73.0 17.8 15.5 10.3
1FLGA Wien-Floridsdorf Gerichtsgasse traffic MSW 2 - good 45.3 21.4 14.2 12.8
1GAUA Wien-Gaudenzdorf traffic MSW 3 - fair 52.3 16.0 14.1 9.6
1HERA Wien-Hermannskogel suburban MSW 1.7 34.0 65.7
1HIKA Wien-Hietzinger traffic MSW 37.3 287
1HOWA Wien-Hohe Warte suburban MSW 4.9 21.9 53.5
1KAEA Wien-Kaiser-Ebersdorf industrial MSW 2 - good 4.0 38.2 17.5 15.9 11.0
1KENA Wien-Kendlerstraße traffic MSW 3 - fair 68.0 21.5 14.5 13.9
1LABA Wien-Laaer Berg traffic MSW
1LIGA Wien-Liesing-Gewerbegebiet traffic MSW 1 - very good 22.2 12.0 13.4 8.3
1LOBA Wien-Lobau suburban MSW 1 - very good 14.1 9.2 25.8 11.3 6.8
1SCHA Wien-Schafberg suburban MSW 2 - good 3.0 26.3 17.4 14.2 11.3
1STAA Wien-Stadlau urban MSW 2 - good 3.9 36.2 25.9 16.0 15.2
1STEA Wien-Stephansplatz urban MSW 7.9 64.1 25.8
1TABA Wien-Taborstrasse traffic MSW 3 - fair 80.0 281 36.5 13.8 16.8
Region: Niederösterreich 2018-05-21 23:00 - 00:00 CEST SO2 NO2 CO PM10 O3 PM10 PM2,5
Code Name Classification Owner Air quality 1h
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2AMSA Amstetten urban Amt der NÖ 3 - fair 14.5 10.5 72.0 13.9
2BIEA Biedermannsdorf traffic Amt der NÖ
2DUNA Dunkelsteinerwald rural Amt der NÖ 4.0 8.0 23.5
2FORA Forsthof rural Amt der NÖ 1.0 5.5 92.0
2GANA Gänserndorf Amt der NÖ 2 - good 3.0 17.0 16.5 55.0 11.2
2GREA Gr. Enzersdorf II. rural Amt der NÖ 1.0 19.0 10.0
2HAIA Hainburg suburban Amt der NÖ 3 - fair 3.0 15.0 13.0 78.0 14.8
2HEIA Heidenreichstein rural Amt der NÖ 3 - fair 2.0 5.0 13.5 89.0 14.5
2IRNA Irnfritz rural Amt der NÖ 1.5 99.0
2KEMA Kematen suburban Amt der NÖ 3 - fair 9.0 7.5 73.5 9.1
2KLOA Klosterneuburg urban Amt der NÖ 2.0 8.5 86.0
2KLVA Klosterneuburg Verkehr traffic Amt der NÖ 1 - very good 14.5 17.5 17.2
2KOLA Kollmitzberg rural Amt der NÖ 2.0 94.5
2KREA Krems urban Amt der NÖ 2 - good 1.0 14.5 13.5 35.0 15.1
2MANA Mannswörth industrial Amt der NÖ 3 - fair 60.5 17.0 15.5
2MISA Mistelbach rural Amt der NÖ 3 - fair 1.0 13.5 73.0 12.0
2NEUA Neusiedl rural Amt der NÖ 1 - very good 2.0 19.5 15.0 15.0
2POCA Pöchlam urban Amt der NÖ 13.5 80.5
2PURA Purkersdorf suburban Amt der NÖ 15.0 23.5
2SCHA Schwechat industrial Amt der NÖ 2 - good 4.0 33.5 215 14.5 30.0 15.6 9.5
2SPOA St. Polten urban Amt der NÖ 2 - good 3.0 16.0 13.0 61.5 12.1 9.0
2SPVA St. Pölten Verkehr traffic Amt der NÖ 2 - good 14.5 212 14.0 58.0 13.2
2SRTA Sreithofen rural Amt der NÖ 2 - good 5.5 8.5 11.5 57.5 13.6
2STOA Stockerau traffic Amt der NÖ 36.0 13.0 13.0
2SVAA St. Valentin-A1 traffic Amt der NÖ 18.0 6.0
2TRAA Traismauer suburban Amt der NÖ 1 - very good 4.0 14.0 13.0 13.9
2TRSA Trasdorf suburban Amt der NÖ 2 - good 4.0 27.0 10.0 11.5
2TUKA Tulbinger Kogel rural Amt der NÖ 4.0 11.5
2TULA Tulln urban Amt der NÖ 2 - good 3.5 10.0 19.0 50.0 15.5
2WOLA Wolkersdorf rural Amt der NÖ 10.5 104.5
2ZIEA Ziersdorf rural Amt der NÖ 1 - very good 13.0 14.0 13.1
2ZWEA Zwentendorf suburban Amt der NÖ 2.0 22.5 5.0
Region: Oberösterreich 2018-05-21 23:00 - 00:00 CEST SO2 NO2 CO PM10 O3 PM10 PM2,5
Code Name Classification Owner Air quality 1h
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3ASEA Asten AOL 11.9
3BISA Bad-Ischl suburban AOL 11.3
3BZEA Braunau Zentrum suburban AOL 9.9
3EKRA Enns-Kristein 3 traffic AOL 122 16.0
3ENZA Enzenkirchen AOL
3FEUA Feuerkogel AOL 7.9
3GRNA Grunbach rural AOL 10.8
3HAIA Haid AOL 186 10.6
3LENA Lenzing industrial AOL
3LEZA Lenzing 2 AOL
3LNWA Linz-Neue Welt urban AOL 387 18.0
3LRMA Linz-Romerbergtunnel traffic AOL 183 14.0
3LSTA Linz-Stadtpark urban AOL 15.0
3LTUA Linz-24er-Turm traffic AOL
3RANA Ranshofen 3 AOL 10.6
3SCHA Schwand AOL
3SGAA Steyregg-Au industrial AOL 187 12.5
3STEA Steyr suburban AOL 13.9
3TRAA Traun suburban AOL 12.3
3VKLA Vöcklabruck suburban AOL 9.8
3WELA Wels urban AOL 164 12.6
3ZBLA Zobelboden 2 rural AOL

Legend

Index Air quality SO2 NO2 CO O3 PM10
1h
µg/m³
1h
µg/m³
8h
µg/m³
1h
µg/m³
1h
µg/m³
     1      very good 0 - 25 0 - 25 0 - 1000 0 - 33 0 - 20
     2      good > 25 - 50 > 25 - 50 > 1000 - 2000 > 33 - 65 > 20 - 40
     3      fair > 50 - 120 > 50 - 100 > 2000 - 4000 > 65 - 120 > 40 - 70
     4      suitable > 120 - 350 > 100 - 200 > 4000 - 10000 > 120 - 180 > 70 - 90
     5      poor > 350 - 500 > 200 - 400 > 10000 - 30000 > 180 - 240 > 90 - 180
     6      very poor > 500 > 400 > 30000 > 240 > 180
Component is not measured on this station
Incomplete data

The conditions for the determination of air pollution index

The calculation of air quality index is based on the assessment of 1-hour concentration of sulphur dioxide (SO2), nitrogen dioxide (NO2), suspended particles (PM10), 8-hour running concentrations of carbon monoxide (CO) and 1-hour ground - level ozone concentrations (O3) in the summer period (1. 4. - 30. 9.). The calculation considers the possible impact of air pollution on the health of population. The calculation for PM10 uses 1-hour average concentrations because they better reflect the current situation (the limits for 1-hour concentrations were derived on the basis of statistical analysis of 24-hour and 1-hour concentrations).

The 1-hour ozone concentrations (O3) are given in the winter period (1. 10. - 31. 3.) as well, although they are not included in the calculation of air quality index. For information purposes, the last column presents the 24-hour running average concentrations of PM10, which are not included in the calculation of air quality index.

  1. Data for the calculation of air quality index are based on current measurements and they are not verified.
  2. Air Quality Index is shown for each quantity in a given locality separately and as an overall index for the locality in column Air Quality is presented the highest of them. Conditions for display is the measurement of PM10 on the site.
  3. Air quality index is imaged in case the 1-hour data are available at least for NO2, O3 and PM10 in the summer period (1.4. - 30.9.) or at least for NO2 and PM10 in the winter period (1.10. - 31.3.), if they are subject of standard measurements in the locality.
  4. The term “incomplete data” may indicate that the instruments at the station were under calibration during the respective hour.
  5. The air quality index is based on data measured strictly pursuant to the current national legislation (Act No. 201/2012 Coll. on air protection, as amended, and Decree No. 330/2012 Coll. on the method of assessment and evaluation of ambient air pollution levels and on the extent of informing the public about levels of ambient air pollution and during smog situations) and pursuant to the requirements of the European Union.