SmogRank / History / week of February 3, 2025

Most polluted cities, week of February 3, 2025

1,941 cities ranked by their average PM2.5 over the 7 days. A city needs measurements on 70% of the days to be ranked.

#	City	µg/m³
1	Delhi Delhi, India	102.8
2	Dushanbe Dushanbe, Tajikistan	91.0
3	Mumbai Maharashtra, India	81.6
4	Novi Pazar Central Serbia, Serbia	76.6
5	Valjevo Central Serbia, Serbia	71.0
6	Užice Central Serbia, Serbia	65.0
7	Opole Opole Voivodeship, Poland	63.0
8	Żywiec Silesia, Poland	62.3
9	Sarajevo Federation of B&H, Bosnia and Herzegovina	61.8
10	Dej Cluj County, Romania	56.6
11	Bielsko-Biala Silesia, Poland	55.9
12	Obrenovac Central Serbia, Serbia	55.2
13	Chennai Tamil Nadu, India	53.3
14	Racibórz Silesia, Poland	52.5
15	Celje Urban Municipality of Celje, Slovenia	47.2
16	Kłodzko Lower Silesia, Poland	46.5
17	Koprivnica Koprivnica-Križevci, Croatia	44.6
18	Kazincbarcika Borsod-Abaúj-Zemplén, Hungary	44.1
19	Czechowice-Dziedzice Silesia, Poland	43.8
20	Jastrzębie Zdrój Silesia, Poland	43.3
21	Havířov Moravian-Silesian Region, Czechia	42.0
22	Miskolc Borsod-Abaúj-Zemplén, Hungary	41.9
23	Lučenec Banská Bystrica Region, Slovakia	41.8
24	Otwock Mazovia, Poland	41.4
25	Niš Central Serbia, Serbia	41.3
26	Český Těšín Moravian-Silesian Region, Czechia	40.5
27	Łask Łódź Voivodeship, Poland	40.1
28	Novo Mesto Urban Municipality of Novo Mesto, Slovenia	39.9
29	Belgrade Central Serbia, Serbia	39.8
30	Trbovlje Municipality of Trbovlje, Slovenia	39.6
31	Ptuj Urban Municipality of Ptuj, Slovenia	39.3
32	Poznań Greater Poland, Poland	39.0
33	Lublin Lublin, Poland	38.7
34	Ljubljana Ljubljana, Slovenia	37.7
35	Kraków Lesser Poland, Poland	37.5
35	Kalisz Greater Poland, Poland	37.5
37	Rzeszów Subcarpathia, Poland	37.1
37	Gorzów Wielkopolski Lubusz, Poland	37.1
39	Worms Rheinland-Pfalz, Germany	37.0
39	Kędzierzyn-Koźle Opole Voivodeship, Poland	37.0
41	Sallanches Auvergne-Rhône-Alpes, France	36.9
41	Novi Sad Vojvodina, Serbia	36.9
43	Bohumín Moravian-Silesian Region, Czechia	36.8
43	Kranj Urban Municipality of Kranj, Slovenia	36.8
45	Dębica Subcarpathia, Poland	36.4
46	Włocławek Kujawsko-Pomorskie, Poland	36.1
47	Frýdek-Místek Moravian-Silesian Region, Czechia	35.3
48	Smederevo Central Serbia, Serbia	35.1
49	Valašské Meziříčí Zlín, Czechia	34.9
50	Jelenia Góra Lower Silesia, Poland	34.8
51	Lleida Catalonia, Spain	34.5
52	Beroun Central Bohemia, Czechia	34.4
53	Mainz Rheinland-Pfalz, Germany	34.3
54	Maribor Urban Municipality of Maribor, Slovenia	34.2
55	Prešov Prešov Region, Slovakia	33.8
56	Nyíregyháza Szabolcs-Szatmár-Bereg, Hungary	33.5
57	Kielce Świętokrzyskie, Poland	33.4
58	Wrocław Lower Silesia, Poland	32.9
59	Łódź Łódź Voivodeship, Poland	32.7
60	Martin Žilina Region, Slovakia	32.4
61	Przemyśl Subcarpathia, Poland	32.3
61	Nisko Subcarpathia, Poland	32.3
63	Gießen Hesse, Germany	32.1
64	Żyrardów Mazovia, Poland	31.9
65	Ludwigshafen am Rhein Rheinland-Pfalz, Germany	31.8
66	Accra low-cost sensors Greater Accra, Ghana	31.5
66	Speyer Rheinland-Pfalz, Germany	31.5
68	Čadca Žilina Region, Slovakia	31.4
69	Esztergom Komárom-Esztergom, Hungary	31.3
69	Děčín Ústí nad Labem Region, Czechia	31.3
69	Toruń Kujawsko-Pomorskie, Poland	31.3
72	Katowice Silesia, Poland	31.1
73	Brzeg Opole Voivodeship, Poland	31.0
74	Zamość Lublin, Poland	30.9
74	Tarnów Lesser Poland, Poland	30.9
74	Győr Győr-Moson-Sopron, Hungary	30.9
77	Bydgoszcz Kujawsko-Pomorskie, Poland	30.8
78	Mielec Subcarpathia, Poland	30.6
78	Chaozhou Taiwan, Taiwan	30.6
78	Frankfurt am Main Hesse, Germany	30.6
81	Legionowo Mazovia, Poland	30.5
82	Kehl Baden-Wurttemberg, Germany	30.4
83	Bad Kreuznach Rheinland-Pfalz, Germany	30.3
83	Prague Prague, Czechia	30.3
85	Pruszków Mazovia, Poland	30.2
85	Lampertheim Hesse, Germany	30.2
85	Třinec Moravian-Silesian Region, Czechia	30.2
88	Fengshan Takao, Taiwan	30.1
88	Ružomberok Žilina Region, Slovakia	30.1
90	Kassel Hesse, Germany	29.9
91	Mannheim Baden-Wurttemberg, Germany	29.8
92	Bernburg Saxony-Anhalt, Germany	29.6
93	Augustów Podlasie, Poland	29.5
94	Passau Bavaria, Germany	29.4
94	Ústí nad Labem Ústí nad Labem Region, Czechia	29.4
96	Wawer Mazovia, Poland	29.3
96	Púchov Trenčín Region, Slovakia	29.3
96	Manlleu Catalonia, Spain	29.3
99	Merseburg Saxony-Anhalt, Germany	29.2
100	Eschborn Hesse, Germany	29.0
101	Starachowice Świętokrzyskie, Poland	28.9
101	Wittenberg Saxony-Anhalt, Germany	28.9
103	Humenné Prešov Region, Slovakia	28.8
103	Traun Upper Austria, Austria	28.8
105	Košice Košice Region, Slovakia	28.7
105	Annemasse Auvergne-Rhône-Alpes, France	28.7
105	Žilina Žilina Region, Slovakia	28.7
108	Rüsselsheim am Main Hesse, Germany	28.6
109	Vranov nad Topľou Prešov Region, Slovakia	28.5
109	Wetzlar Hesse, Germany	28.5
109	Weißenfels Saxony-Anhalt, Germany	28.5
109	Zvolen Banská Bystrica Region, Slovakia	28.5
113	Jarosław Subcarpathia, Poland	28.4
114	Konstancin-Jeziorna Mazovia, Poland	28.3
114	Dessau Saxony-Anhalt, Germany	28.3
114	Bensheim Hesse, Germany	28.3
114	Teplice Ústí nad Labem Region, Czechia	28.3
114	Olomouc Olomouc Region, Czechia	28.3
114	Mollet del Vallès Catalonia, Spain	28.3
120	Přerov Olomouc Region, Czechia	28.0
121	Kaohsiung Takao, Taiwan	27.9
121	Limburg an der Lahn Hesse, Germany	27.9
121	Most Ústí nad Labem Region, Czechia	27.9
121	Litvínov Ústí nad Labem Region, Czechia	27.9
125	Neuwied Rheinland-Pfalz, Germany	27.5
125	Karlsruhe Baden-Wurttemberg, Germany	27.5
125	Datteln North Rhine-Westphalia, Germany	27.5
128	Riedstadt Hesse, Germany	27.4
129	Istanbul low-cost sensors Istanbul, Turkey	27.3
129	Warsaw Mazovia, Poland	27.3
129	Heilbronn Baden-Wurttemberg, Germany	27.3
129	Hattersheim Hesse, Germany	27.3
133	Szczecin West Pomerania, Poland	27.2
134	Strasbourg Grand Est, France	27.0
134	Pécs Baranya, Hungary	27.0
136	Ingolstadt Bavaria, Germany	26.9
136	Darmstadt Hesse, Germany	26.9
138	Münster North Rhine-Westphalia, Germany	26.8
138	Marburg an der Lahn Hesse, Germany	26.8
138	Kaiserslautern Rheinland-Pfalz, Germany	26.8
138	Bottrop North Rhine-Westphalia, Germany	26.8
138	České Budějovice South Bohemian Region, Czechia	26.8
143	Maarssen Utrecht, The Netherlands	26.7
143	Krefeld North Rhine-Westphalia, Germany	26.7
145	Wiesbaden Hesse, Germany	26.4
145	Oberhausen North Rhine-Westphalia, Germany	26.4
145	Gyál Pest County, Hungary	26.4
145	Nitra Nitra Region, Slovakia	26.4
145	Silao de la Victoria Guanajuato, Mexico	26.4
150	Trebišov Košice Region, Slovakia	26.3
150	Trier Rheinland-Pfalz, Germany	26.3
152	Dillingen Saarland, Germany	26.2
153	Heidelberg Baden-Wurttemberg, Germany	26.1
154	Kladno Central Bohemia, Czechia	26.0
155	Białystok Podlasie, Poland	25.9
155	Walsrode Lower Saxony, Germany	25.9
155	Dortmund North Rhine-Westphalia, Germany	25.9
155	Bamberg Bavaria, Germany	25.9
159	Gelsenkirchen North Rhine-Westphalia, Germany	25.8
160	Wels Upper Austria, Austria	25.7
160	Trenčín Trenčín Region, Slovakia	25.7
162	Schiedam South Holland, The Netherlands	25.6
162	Altenburg Thuringia, Germany	25.6
164	Ansfelden Upper Austria, Austria	25.5
164	Schwäbisch Hall Baden-Wurttemberg, Germany	25.5
164	Mladá Boleslav Central Bohemia, Czechia	25.5
164	Kadaň Ústí nad Labem Region, Czechia	25.5
168	Jasło Subcarpathia, Poland	25.4
169	Wiesloch Baden-Wurttemberg, Germany	25.3
170	Magdeburg Saxony-Anhalt, Germany	25.2
170	Köthen Saxony-Anhalt, Germany	25.2
170	Duisburg North Rhine-Westphalia, Germany	25.2
170	Dunaújváros Fejér, Hungary	25.2
170	Znojmo South Moravian, Czechia	25.2
175	Hanau am Main Hesse, Germany	25.1
175	Greiz Thuringia, Germany	25.1
175	Irapuato Guanajuato, Mexico	25.1
178	Borken North Rhine-Westphalia, Germany	25.0
178	Bratislava Bratislava Region, Slovakia	25.0
180	Oldenburg Lower Saxony, Germany	24.9
180	Koblenz Rheinland-Pfalz, Germany	24.9
180	Düsseldorf North Rhine-Westphalia, Germany	24.9
180	Meylan Auvergne-Rhône-Alpes, France	24.9
184	Weimar Thuringia, Germany	24.8
184	Grenoble Auvergne-Rhône-Alpes, France	24.8
184	Żary Lubusz, Poland	24.8
184	Ourense Galicia, Spain	24.8
188	Barneveld Gelderland, The Netherlands	24.7
188	Linz Upper Austria, Austria	24.7
188	Würzburg Bavaria, Germany	24.7
188	Tübingen Baden-Wurttemberg, Germany	24.7
188	Fulda Hesse, Germany	24.7
188	Sereď Trnava Region, Slovakia	24.7
194	Unna North Rhine-Westphalia, Germany	24.6
194	Nuremberg Bavaria, Germany	24.6
194	Essen North Rhine-Westphalia, Germany	24.6
197	IJsselstein Utrecht, The Netherlands	24.5
197	Teltow Brandenburg, Germany	24.5
197	Michelstadt Hesse, Germany	24.5
197	Radomsko Łódź Voivodeship, Poland	24.5

Top 200 of 1,941 shown.

Good 0–9.0Moderate 9.1+Unhealthy for sensitive groups 35.5+Unhealthy 55.5+Very unhealthy 125.5+Hazardous 225.5+No data