SmogRank / History / week of January 13, 2025

Most polluted cities, week of January 13, 2025

1,784 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	Lahore low-cost sensors Punjab, Pakistan	240.3
2	Dhaka low-cost sensors Dhaka Division, Bangladesh	187.3
3	Kolkata West Bengal, India	185.7
4	Delhi Delhi, India	177.1
5	N'Djamena N’Djaména, Chad	146.8
6	Kampala low-cost sensors Central Region, Uganda	146.0
7	Peshawar low-cost sensors Khyber Pakhtunkhwa, Pakistan	137.5
8	Ulan Bator Ulaanbaatar, Mongolia	136.3
9	Islamabad low-cost sensors Islamabad, Pakistan	112.8
10	Abuja low-cost sensors FCT, Nigeria	107.9
11	Karachi low-cost sensors Sindh, Pakistan	105.9
12	Dushanbe Dushanbe, Tajikistan	104.1
12	Hanoi Hanoi, Vietnam	104.1
14	Mumbai Maharashtra, India	97.8
15	Hyderabad Telangana, India	88.6
16	Kathmandu low-cost sensors Bagmati Province, Nepal	85.1
17	Sarajevo Federation of B&H, Bosnia and Herzegovina	65.0
18	Salor Tashkent Region, Uzbekistan	63.6
19	Baghdad Baghdad, Iraq	60.0
20	Tha Bo Nong Khai, Thailand	59.3
20	Kinshasa low-cost sensors Kinshasa, Democratic Republic of the Congo	59.3
22	Cairo Cairo, Egypt	57.8
23	Shanghai Shanghai, China	57.3
24	Conakry Conakry, Guinea	56.2
25	Dhahran Eastern Province, Saudi Arabia	55.4
26	Almaty low-cost sensors Almaty, Kazakhstan	54.8
27	Lubań Lower Silesia, Poland	52.6
28	Abidjan low-cost sensors Abidjan Autonomous District, Ivory Coast	51.1
29	Krotoszyn Greater Poland, Poland	50.9
30	Żywiec Silesia, Poland	50.4
31	Chennai Tamil Nadu, India	49.7
32	Banja Luka Srpska, Bosnia and Herzegovina	49.0
33	Yerevan low-cost sensors Yerevan, Armenia	46.3
34	Lazarevac Central Serbia, Serbia	45.3
35	Kigali Kigali, Rwanda	43.9
36	Yangon Yangon, Myanmar	43.7
37	Opole Opole Voivodeship, Poland	43.5
38	Marignane Provence-Alpes-Côte d'Azur, France	43.2
39	Bielsko-Biala Silesia, Poland	42.1
40	Sremčica Central Serbia, Serbia	41.1
41	Accra low-cost sensors Greater Accra, Ghana	40.3
42	Guangzhou Guangdong, China	39.2
43	Kazincbarcika Borsod-Abaúj-Zemplén, Hungary	38.0
44	Botevgrad low-cost sensors Sofia, Bulgaria	37.8
44	Jelenia Góra Lower Silesia, Poland	37.8
46	Kłodzko Lower Silesia, Poland	36.7
47	Dimitrovgrad low-cost sensors Haskovo, Bulgaria	36.1
48	Manlleu Catalonia, Spain	35.9
49	Shenyang Liaoning, China	35.8
50	Miskolc Borsod-Abaúj-Zemplén, Hungary	35.6
51	Haskovo low-cost sensors Haskovo, Bulgaria	35.5
52	Łask Łódź Voivodeship, Poland	35.4
53	Tuen Mun Tuen Mun, Hong Kong	35.2
54	Kielce Świętokrzyskie, Poland	34.7
54	Pančevo Vojvodina, Serbia	34.7
54	Obrenovac Central Serbia, Serbia	34.7
57	Zemun Central Serbia, Serbia	34.5
57	Wan Chai Wan Chai, Hong Kong	34.5
59	Istanbul low-cost sensors Istanbul, Turkey	33.9
60	Kranj Urban Municipality of Kranj, Slovenia	33.1
61	Skarżysko-Kamienna Świętokrzyskie, Poland	33.0
62	Dębica Subcarpathia, Poland	32.1
62	Jincheng Fukien, Taiwan	32.1
64	Izegem Flanders, Belgium	32.0
64	Kraków Lesser Poland, Poland	32.0
64	Celje Urban Municipality of Celje, Slovenia	32.0
67	Baku Baki, Azerbaijan	31.5
68	Arles Provence-Alpes-Côte d'Azur, France	31.3
69	Belgrade Central Serbia, Serbia	30.9
70	Radomsko Łódź Voivodeship, Poland	30.8
71	Menen Flanders, Belgium	30.7
72	Fengshan Takao, Taiwan	30.6
72	Kalisz Greater Poland, Poland	30.6
74	Lochristi Flanders, Belgium	30.4
74	Esztergom Komárom-Esztergom, Hungary	30.4
76	Mong Kok Yau Tsim Mong District, Hong Kong	30.2
76	Katowice Silesia, Poland	30.2
78	Cluj-Napoca Cluj County, Romania	30.0
79	Chaozhou Taiwan, Taiwan	29.8
79	San Tung Chung Hang Islands, Hong Kong	29.8
81	Maldegem Flanders, Belgium	29.6
81	Antwerp Flanders, Belgium	29.6
81	Ptuj Urban Municipality of Ptuj, Slovenia	29.6
81	Novo Mesto Urban Municipality of Novo Mesto, Slovenia	29.6
85	Beveren Flanders, Belgium	29.5
85	Liptovský Mikuláš Žilina Region, Slovakia	29.5
87	Gent Flanders, Belgium	29.3
88	Kaohsiung Takao, Taiwan	29.2
88	Brzeg Opole Voivodeship, Poland	29.2
90	Roeselare Flanders, Belgium	29.0
90	Kędzierzyn-Koźle Opole Voivodeship, Poland	29.0
92	Beijing Beijing, China	28.9
93	Lučenec Banská Bystrica Region, Slovakia	28.8
94	Tin Shui Wai Yuen Long, Hong Kong	28.7
95	Kehl Baden-Wurttemberg, Germany	28.6
96	Sevlievo low-cost sensors Gabrovo, Bulgaria	28.5
96	Drammen Buskerud, Norway	28.5
98	Gabrovo low-cost sensors Gabrovo, Bulgaria	28.4
98	Grimbergen Flanders, Belgium	28.4
100	Jeddah Mecca Region, Saudi Arabia	28.3
101	Nyíregyháza Szabolcs-Szatmár-Bereg, Hungary	28.2
101	Kortrijk Flanders, Belgium	28.2
103	Kapellen Flanders, Belgium	28.1
103	Wrocław Lower Silesia, Poland	28.1
103	Ecatepec de Morelos México, Mexico	28.1
106	Salon-de-Provence Provence-Alpes-Côte d'Azur, France	28.0
106	Asunción low-cost sensors Asuncion, Paraguay	28.0
106	Naucalpan de Juárez México, Mexico	28.0
106	Ciudad Nezahualcoyotl México, Mexico	28.0
106	Hanford California, United States	28.0
111	Košice Košice Region, Slovakia	27.9
111	Tournai Wallonia, Belgium	27.9
113	Mielec Subcarpathia, Poland	27.8
114	Denain Hauts-de-France, France	27.3
115	Tai Po Tai Po, Hong Kong	27.2
115	Kwai Chung Kwai Tsing District, Hong Kong	27.2
115	Nitra Nitra Region, Slovakia	27.2
115	Trbovlje Municipality of Trbovlje, Slovenia	27.2
119	Zwijndrecht Flanders, Belgium	27.1
120	Stabroek Flanders, Belgium	27.0
120	Avignon Provence-Alpes-Côte d'Azur, France	27.0
122	Tsuen Wan Tsuen Wan, Hong Kong	26.8
122	Willebroek Flanders, Belgium	26.8
122	Kutno Łódź Voivodeship, Poland	26.8
125	Prešov Prešov Region, Slovakia	26.6
125	Racibórz Silesia, Poland	26.6
125	Ourense Galicia, Spain	26.6
125	Maribor Urban Municipality of Maribor, Slovenia	26.6
129	Mons Wallonia, Belgium	26.4
129	Lampertheim Hesse, Germany	26.4
131	Bottrop North Rhine-Westphalia, Germany	26.2
131	Győr Győr-Moson-Sopron, Hungary	26.2
133	Iaşi Iași County, Romania	26.1
133	Sham Shui Po Sham Shui Po District, Hong Kong	26.1
133	Victoria Central and Western, Hong Kong	26.1
133	Mannheim Baden-Wurttemberg, Germany	26.1
133	Freiburg Baden-Wurttemberg, Germany	26.1
133	Pezinok Bratislava Region, Slovakia	26.1
139	Clermont-Ferrand Auvergne-Rhône-Alpes, France	26.0
140	Bardejov Prešov Region, Slovakia	25.9
140	Mechelen Flanders, Belgium	25.9
140	Žilina Žilina Region, Slovakia	25.9
140	Trenčín Trenčín Region, Slovakia	25.9
144	Rzeszów Subcarpathia, Poland	25.7
144	Jasło Subcarpathia, Poland	25.7
144	Oberhausen North Rhine-Westphalia, Germany	25.7
144	Karlsruhe Baden-Wurttemberg, Germany	25.7
148	Jastrzębie Zdrój Silesia, Poland	25.5
149	Ashgabat Ashgabat, Turkmenistan	25.4
149	Trebišov Košice Region, Slovakia	25.4
149	Zaventem Flanders, Belgium	25.4
152	Lillehammer Innlandet, Norway	25.3
153	Bern Bern, Switzerland	25.1
153	Bensheim Hesse, Germany	25.1
153	Saint Helier low-cost sensors St Helier, Jersey	25.1
153	Łódź Łódź Voivodeship, Poland	25.1
153	Czechowice-Dziedzice Silesia, Poland	25.1
158	Sau Mau Ping Kwun Tong District, Hong Kong	25.0
158	Koksijde Flanders, Belgium	25.0
160	Erlun Taiwan, Taiwan	24.8
161	Fresno California, United States	24.6
162	Sha Tin Sha Tin, Hong Kong	24.5
162	Fanling North District, Hong Kong	24.5
162	Duisburg North Rhine-Westphalia, Germany	24.5
165	Yongkang Taiwan, Taiwan	24.4
166	Tainan Taiwan, Taiwan	24.3
166	Čadca Žilina Region, Slovakia	24.3
166	Silao de la Victoria Guanajuato, Mexico	24.3
169	Vranov nad Topľou Prešov Region, Slovakia	24.2
169	Zvolen Banská Bystrica Region, Slovakia	24.2
169	Mexico City Mexico City, Mexico	24.2
172	Basel Basel-City, Switzerland	24.1
173	Dillingen Saarland, Germany	24.0
174	Partizánske Trenčín Region, Slovakia	23.9
174	Oviedo Asturias, Spain	23.9
176	Tübingen Baden-Wurttemberg, Germany	23.8
176	Stuttgart Baden-Wurttemberg, Germany	23.8
178	Douliu Taiwan, Taiwan	23.7
178	Rixensart Wallonia, Belgium	23.7
178	Handlová Trenčín Region, Slovakia	23.7
181	Saarbrücken Saarland, Germany	23.6
181	Badger Alaska, United States	23.6
183	Humenné Prešov Region, Slovakia	23.5
184	Thionville Grand Est, France	23.4
185	Brussels Brussels Capital, Belgium	23.3
185	Gelsenkirchen North Rhine-Westphalia, Germany	23.3
187	The Hague South Holland, The Netherlands	23.2
187	Lörrach Baden-Wurttemberg, Germany	23.2
187	Krefeld North Rhine-Westphalia, Germany	23.2
187	Heilbronn Baden-Wurttemberg, Germany	23.2
187	Dortmund North Rhine-Westphalia, Germany	23.2
187	Prievidza Trenčín Region, Slovakia	23.2
193	Wiesloch Baden-Wurttemberg, Germany	23.0
194	Starachowice Świętokrzyskie, Poland	22.9
194	Xinying Taiwan, Taiwan	22.9
194	Reutlingen Baden-Wurttemberg, Germany	22.9
197	Jarosław Subcarpathia, Poland	22.8
197	Aberdeen Southern District, Hong Kong	22.8
197	Heidelberg Baden-Wurttemberg, Germany	22.8
200	Völklingen Saarland, Germany	22.7

Top 200 of 1,784 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