SmogRank / Episodes / Germany
Germany, Slovakia and 2 more countries, June 2023
For 2 days, from 20 to 21 June 2023, 19 cities in Germany, Slovakia, Poland and 1 more countries had PM2.5 at least twice their usual for the time of year. The worst reading was Senica, Trnava Region, Slovakia: 35.7 µg/m³ on 21 June, about 3.5× its usual 10.1.
No cause named We have no fire or smoke records for these days, so we only say what the measurements show.
Cities reached 19 in 4 countries
Days 2 20 to 21 June 2023
Worst day 20 June 14 cities counted
Furthest above usual 4.2× Eisenhüttenstadt
Day by day
Play 20 June 14 cities at twice their usual or more
Opole Krapkowice Nysa Kędzierzyn-Koźle Wrocław Racibórz Opava Bohumín Ostrava Kłodzko Jastrzębie Zdrój Havířov Frýdek-Místek Olomouc Katowice Český Těšín Valašské Meziříčí Přerov Třinec Czechowice-Dziedzice Kościan Kroměříž Zlín Bielsko-Biala Poznań Łódź Žilina Trenčín Jelenia Góra Židenice Hradec Králové Brno Kutno Pardubice Martin Włocławek Bydgoszcz Toruń Prievidza Kraków Partizánske Handlová Žiar nad Hronom Płock Banská Bystrica Świecie Znojmo Międzyrzecz Liberec Zvolen Karlova Ves Kielce Mladá Boleslav Żyrardów Klosterneuburg Vienna Gorzów Wielkopolski Poprad Perchtoldsdorf Mödling Esztergom Baden Pruszków Starachowice Tarnów Spišská Nová Ves Radom Sankt Pölten Prague Legionowo Warsaw Cottbus Děčín Konstancin-Jeziorna Wawer Otwock Mielec Kladno Ústí nad Labem Dębica Pułtusk Beroun České Budějovice Jasło Kazincbarcika Lubnjow Teplice Prešov Olsztyn Amstetten Szczecin Schwedt (Oder) Košice Litvínov Krosno Rzeszów Linz Ansfelden Eberswalde Steyr Nisko Vranov nad Topľou Traun Pilsen Humenné Wels Świnoujście Berlin Siedlce Łuków Kleinmachnow Snina Kętrzyn Lublin Passau Jarosław Przemyśl Sokolov Nauen Wittenberg Altenburg Neuruppin Brandenburg an der Havel Ełk Zamość Greiz Burghausen Weiden Marktredwitz Weißenfels Halle (Saale) Białystok Köthen Schwandorf in Bayern Traunreut Augustów Burg bei Magdeburg Jena Kelheim Magdeburg Güstrow Wittenberge Saalfeld Weimar Rostock Munich Wismar Starnberg Kalisz Łask Kadaň Nitra Bratislava Ružomberok Trnava Grajewo Most Teltow Senica Bernau bei Berlin Blankenfelde-Mahlow Potsdam Neuenhagen Falkensee Frankfurt (Oder) Strausberg Eisenhüttenstadt 17 Jun 18 19 20 21 22 23 24 Every measured city in the area, coloured by its PM2.5 that day; a dark ring marks a city at twice its usual or more. Bars: cities counted each day, coloured by their median level. Choose a day or press play; without JavaScript, the days link to that day's world ranking.
How it spread
Trnava Trnava, 17 June: 11.9 µg/m³, 1.1× usual Trnava, 18 June: 16.9 µg/m³, 1.5× usual Trnava, 19 June: 25.6 µg/m³, 2.3× usual Trnava, 20 June: 29.4 µg/m³, 2.6× usual Trnava, 21 June: 30.5 µg/m³, 2.7× usual Trnava, 22 June: 21.7 µg/m³, 1.9× usual Trnava, 23 June: 21.4 µg/m³, 1.9× usual Trnava, 24 June: 7.4 µg/m³, 0.7× usual Senica Senica, 17 June: 11.8 µg/m³, 1.2× usual Senica, 18 June: 17.1 µg/m³, 1.7× usual Senica, 19 June: 25.0 µg/m³, 2.5× usual Senica, 20 June: 29.3 µg/m³, 2.9× usual Senica, 21 June: 35.7 µg/m³, 3.5× usual Senica, 22 June: no reading Senica, 23 June: no reading Senica, 24 June: no reading Most Most, 17 June: 10.2 µg/m³, 1.0× usual Most, 18 June: 12.9 µg/m³, 1.2× usual Most, 19 June: 19.3 µg/m³, 1.8× usual Most, 20 June: 31.6 µg/m³, 3.0× usual Most, 21 June: 14.2 µg/m³, 1.3× usual Most, 22 June: 14.7 µg/m³, 1.4× usual Most, 23 June: 9.4 µg/m³, 0.9× usual Most, 24 June: 8.7 µg/m³, 0.8× usual Eisenhüttenstadt Eisenhüttenstadt, 17 June: 13.3 µg/m³, 1.9× usual Eisenhüttenstadt, 18 June: 13.6 µg/m³, 1.9× usual Eisenhüttenstadt, 19 June: 21.0 µg/m³, 3.0× usual Eisenhüttenstadt, 20 June: 29.6 µg/m³, 4.2× usual Eisenhüttenstadt, 21 June: 17.8 µg/m³, 2.5× usual Eisenhüttenstadt, 22 June: 13.4 µg/m³, 1.9× usual Eisenhüttenstadt, 23 June: 11.3 µg/m³, 1.6× usual Eisenhüttenstadt, 24 June: 10.1 µg/m³, 1.4× usual Frankfurt (Oder) Frankfurt (Oder), 17 June: 16.0 µg/m³, 2.4× usual Frankfurt (Oder), 18 June: 14.1 µg/m³, 2.1× usual Frankfurt (Oder), 19 June: 20.2 µg/m³, 3.0× usual Frankfurt (Oder), 20 June: 27.6 µg/m³, 4.1× usual Frankfurt (Oder), 21 June: 17.3 µg/m³, 2.6× usual Frankfurt (Oder), 22 June: 11.5 µg/m³, 1.7× usual Frankfurt (Oder), 23 June: 11.8 µg/m³, 1.8× usual Frankfurt (Oder), 24 June: 9.8 µg/m³, 1.5× usual Neuenhagen Neuenhagen, 17 June: 13.6 µg/m³, 2.0× usual Neuenhagen, 18 June: 15.3 µg/m³, 2.3× usual Neuenhagen, 19 June: 19.4 µg/m³, 2.9× usual Neuenhagen, 20 June: 26.7 µg/m³, 4.0× usual Neuenhagen, 21 June: 18.5 µg/m³, 2.8× usual Neuenhagen, 22 June: 11.0 µg/m³, 1.6× usual Neuenhagen, 23 June: 11.4 µg/m³, 1.7× usual Neuenhagen, 24 June: 9.6 µg/m³, 1.4× usual Teltow Teltow, 17 June: 15.5 µg/m³, 1.7× usual Teltow, 18 June: 16.2 µg/m³, 1.8× usual Teltow, 19 June: 20.0 µg/m³, 2.2× usual Teltow, 20 June: 26.6 µg/m³, 3.0× usual Teltow, 21 June: 20.5 µg/m³, 2.3× usual Teltow, 22 June: 11.4 µg/m³, 1.3× usual Teltow, 23 June: 13.4 µg/m³, 1.5× usual Teltow, 24 June: 11.3 µg/m³, 1.3× usual Nitra Nitra, 17 June: 9.8 µg/m³, 0.9× usual Nitra, 18 June: 13.5 µg/m³, 1.3× usual Nitra, 19 June: 22.4 µg/m³, 2.1× usual Nitra, 20 June: 26.4 µg/m³, 2.5× usual Nitra, 21 June: 24.4 µg/m³, 2.3× usual Nitra, 22 June: no reading Nitra, 23 June: no reading Nitra, 24 June: no reading Blankenfelde-Mahlow Blankenfelde-Mahlow, 17 June: 14.4 µg/m³, 2.1× usual Blankenfelde-Mahlow, 18 June: 14.3 µg/m³, 2.1× usual Blankenfelde-Mahlow, 19 June: 18.2 µg/m³, 2.7× usual Blankenfelde-Mahlow, 20 June: 26.0 µg/m³, 3.9× usual Blankenfelde-Mahlow, 21 June: 18.8 µg/m³, 2.8× usual Blankenfelde-Mahlow, 22 June: 9.6 µg/m³, 1.4× usual Blankenfelde-Mahlow, 23 June: 11.0 µg/m³, 1.6× usual Blankenfelde-Mahlow, 24 June: 9.3 µg/m³, 1.4× usual Kadaň Kadaň, 17 June: 9.9 µg/m³, 0.9× usual Kadaň, 18 June: 12.0 µg/m³, 1.1× usual Kadaň, 19 June: 21.0 µg/m³, 2.0× usual Kadaň, 20 June: 25.9 µg/m³, 2.5× usual Kadaň, 21 June: 14.0 µg/m³, 1.3× usual Kadaň, 22 June: 16.1 µg/m³, 1.5× usual Kadaň, 23 June: 8.0 µg/m³, 0.8× usual Kadaň, 24 June: 9.1 µg/m³, 0.9× usual Potsdam Potsdam, 17 June: 12.0 µg/m³, 1.8× usual Potsdam, 18 June: 13.2 µg/m³, 2.0× usual Potsdam, 19 June: 20.1 µg/m³, 3.0× usual Potsdam, 20 June: 25.8 µg/m³, 3.9× usual Potsdam, 21 June: 19.7 µg/m³, 3.0× usual Potsdam, 22 June: 10.5 µg/m³, 1.6× usual Potsdam, 23 June: 9.0 µg/m³, 1.4× usual Potsdam, 24 June: 9.0 µg/m³, 1.4× usual Bernau bei Berlin Bernau bei Berlin, 17 June: 15.4 µg/m³, 2.3× usual Bernau bei Berlin, 18 June: 15.5 µg/m³, 2.3× usual Bernau bei Berlin, 19 June: 18.8 µg/m³, 2.8× usual Bernau bei Berlin, 20 June: 25.5 µg/m³, 3.8× usual Bernau bei Berlin, 21 June: 19.7 µg/m³, 2.9× usual Bernau bei Berlin, 22 June: 11.5 µg/m³, 1.7× usual Bernau bei Berlin, 23 June: 11.1 µg/m³, 1.7× usual Bernau bei Berlin, 24 June: 9.2 µg/m³, 1.4× usual Falkensee Falkensee, 17 June: 10.7 µg/m³, 1.7× usual Falkensee, 18 June: 11.8 µg/m³, 1.9× usual Falkensee, 19 June: 19.0 µg/m³, 3.1× usual Falkensee, 20 June: 25.4 µg/m³, 4.1× usual Falkensee, 21 June: 19.0 µg/m³, 3.1× usual Falkensee, 22 June: 10.8 µg/m³, 1.7× usual Falkensee, 23 June: 8.6 µg/m³, 1.4× usual Falkensee, 24 June: 8.3 µg/m³, 1.3× usual Strausberg Strausberg, 17 June: 14.8 µg/m³, 2.4× usual Strausberg, 18 June: 13.3 µg/m³, 2.1× usual Strausberg, 19 June: 16.6 µg/m³, 2.7× usual Strausberg, 20 June: 25.3 µg/m³, 4.1× usual Strausberg, 21 June: 19.6 µg/m³, 3.2× usual Strausberg, 22 June: 10.2 µg/m³, 1.6× usual Strausberg, 23 June: 10.0 µg/m³, 1.6× usual Strausberg, 24 June: 8.5 µg/m³, 1.4× usual Grajewo Grajewo, 17 June: 19.9 µg/m³, 2.1× usual Grajewo, 18 June: 18.4 µg/m³, 1.9× usual Grajewo, 19 June: 17.3 µg/m³, 1.8× usual Grajewo, 20 June: no reading Grajewo, 21 June: 28.2 µg/m³, 2.9× usual Grajewo, 22 June: 20.8 µg/m³, 2.2× usual Grajewo, 23 June: no reading Grajewo, 24 June: no reading Bratislava Bratislava, 17 June: 8.2 µg/m³, 0.8× usual Bratislava, 18 June: 13.6 µg/m³, 1.3× usual Bratislava, 19 June: 16.7 µg/m³, 1.6× usual Bratislava, 20 June: 22.8 µg/m³, 2.2× usual Bratislava, 21 June: 27.3 µg/m³, 2.6× usual Bratislava, 22 June: 18.4 µg/m³, 1.8× usual Bratislava, 23 June: 14.6 µg/m³, 1.4× usual Bratislava, 24 June: 4.7 µg/m³, 0.5× usual Kalisz Kalisz, 17 June: 14.6 µg/m³, 1.2× usual Kalisz, 18 June: 16.6 µg/m³, 1.4× usual Kalisz, 19 June: 18.6 µg/m³, 1.6× usual Kalisz, 20 June: no reading Kalisz, 21 June: 27.0 µg/m³, 2.3× usual Kalisz, 22 June: 17.2 µg/m³, 1.5× usual Kalisz, 23 June: no reading Kalisz, 24 June: no reading Łask Łask, 17 June: 15.5 µg/m³, 1.5× usual Łask, 18 June: 17.4 µg/m³, 1.7× usual Łask, 19 June: 16.5 µg/m³, 1.6× usual Łask, 20 June: no reading Łask, 21 June: 26.0 µg/m³, 2.5× usual Łask, 22 June: 11.7 µg/m³, 1.1× usual Łask, 23 June: no reading Łask, 24 June: no reading Ružomberok Ružomberok, 17 June: 14.6 µg/m³, 1.5× usual Ružomberok, 18 June: 9.8 µg/m³, 1.0× usual Ružomberok, 19 June: 10.8 µg/m³, 1.1× usual Ružomberok, 20 June: 18.8 µg/m³, 1.9× usual Ružomberok, 21 June: 25.0 µg/m³, 2.6× usual Ružomberok, 22 June: 19.5 µg/m³, 2.0× usual Ružomberok, 23 June: 28.1 µg/m³, 2.9× usual Ružomberok, 24 June: 11.0 µg/m³, 1.1× usual 17 Jun 18 19 20 21 22 23 24 Every counted city, in the order the episode reached them, 3 days before to 3 after. Each square is a day, coloured by that day's PM2.5; outlined: at twice the city's usual or more. Good 0–50
Moderate 51–100
Sensitive groups 101–150
Unhealthy 151–200
Very unhealthy 201–300
Hazardous 301+
Every city it reached
City Days Highest Usual Above usual
Eisenhüttenstadt Brandenburg, Germany 1 20 June 7.1 4.2× Frankfurt (Oder) Brandenburg, Germany 1 20 June 6.7 4.1× Falkensee Brandenburg, Germany 1 20 June 6.2 4.1× Strausberg Brandenburg, Germany 1 20 June 6.2 4.1× Neuenhagen Brandenburg, Germany 1 20 June 6.7 4.0× Potsdam Brandenburg, Germany 1 20 June 6.6 3.9× Blankenfelde-Mahlow Brandenburg, Germany 1 20 June 6.7 3.9× Bernau bei Berlin Brandenburg, Germany 1 20 June 6.7 3.8× Senica Trnava Region, Slovakia 2 21 June 10.1 3.5× Teltow Brandenburg, Germany 1 20 June 8.9 3.0× Most Ústí nad Labem Region, Czechia 1 20 June 10.6 3.0× Grajewo Podlasie, Poland 1 21 June 9.6 2.9× Ružomberok Žilina Region, Slovakia 1 23 June 9.7 2.9× Trnava Trnava Region, Slovakia 2 21 June 11.2 2.7× Bratislava Bratislava Region, Slovakia 1 21 June 10.4 2.6× Łask Łódź Voivodeship, Poland 1 21 June 10.4 2.5× Nitra Nitra Region, Slovakia 1 20 June 10.6 2.5× Kadaň Ústí nad Labem Region, Czechia 1 20 June 10.5 2.5× Kalisz Greater Poland, Poland 1 21 June 11.8 2.3×
Daily means in µg/m³. Usual: the city's median for this time of year (its days within 21 days of the date, every year, leaving out the week around it). Above usual: its highest day against that.
Against other episodes in Germany and Slovakia
Number 6 of 10 episodes in Germany and Slovakia since our records began, by cities reached.
Central Europe, February 2023 604 Eastern Europe, December 2023 107 Central Europe, April 2023 65 Eastern Europe, December 2023 29 Belgium and Germany, May 2023 26 Germany, Slovakia and 2 more countries, June 2023 19 Czechia, Slovakia and Austria, December 2023 16 South-eastern Europe, December 2023 16 Czechia and Slovakia, January 2023 9 Czechia and Germany, May 2023 8 Bars: cities reached; colour: the level of the episode's highest daily reading.
Use this page SmogRank, Germany, Slovakia and 2 more countries, June 2023: 19 cities with PM2.5 at twice their usual or more, 20 to 21 June 2023, smogrank.com/episodes/2023-06-germany-slovakia-and-2-more-countries (accessed 2 October 2026).
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You're welcome to reuse a single chart, image or figure with this citation and a link. Terms .
An episode is a run of days when many cities close to each other (four or more within 350 km on a day, 8 or more in all) each had a daily PM2.5 mean of at least 25 µg/m³ and at least 2 times their usual for that time of year. Found in our own measurements, not picked by hand. How we find episodes . Values are each city's daily mean of its own monitors; causes are the usual kinds for a pattern like this, not a confirmed source.
