SmogRank / History / week of January 20, 2025

Most polluted cities, week of January 20, 2025

2,030 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	Dhaka low-cost sensors Dhaka Division, Bangladesh	241.6
2	Kolkata West Bengal, India	183.0
3	Lahore low-cost sensors Punjab, Pakistan	155.4
4	N'Djamena N’Djaména, Chad	132.7
5	Sarajevo Federation of B&H, Bosnia and Herzegovina	124.9
6	Kampala low-cost sensors Central Region, Uganda	121.7
7	Delhi Delhi, India	112.7
8	Mumbai Maharashtra, India	109.1
9	Banja Luka Srpska, Bosnia and Herzegovina	105.8
10	Kathmandu low-cost sensors Bagmati Province, Nepal	92.8
11	Karachi low-cost sensors Sindh, Pakistan	89.3
12	Ulan Bator Ulaanbaatar, Mongolia	79.8
13	Tha Bo Nong Khai, Thailand	75.8
14	Dushanbe Dushanbe, Tajikistan	73.2
15	Peshawar low-cost sensors Khyber Pakhtunkhwa, Pakistan	73.1
16	Islamabad low-cost sensors Islamabad, Pakistan	72.6
17	Hanoi Hanoi, Vietnam	71.8
18	Żywiec Silesia, Poland	70.1
19	Shenyang Liaoning, China	68.7
20	Hyderabad Telangana, India	67.8
21	Bishkek low-cost sensors Bishkek, Kyrgyzstan	67.5
22	Abuja low-cost sensors FCT, Nigeria	66.6
23	Codlea Brașov County, Romania	62.1
24	Baghdad Baghdad, Iraq	61.6
25	Kinshasa low-cost sensors Kinshasa, Democratic Republic of the Congo	61.5
26	Chennai Tamil Nadu, India	57.3
27	Lazarevac Central Serbia, Serbia	56.6
28	Tomaszów Lubelski Lublin, Poland	55.4
29	Salor Tashkent Region, Uzbekistan	54.6
30	Skarżysko-Kamienna Świętokrzyskie, Poland	54.5
31	Beijing Beijing, China	54.2
32	Kigali Kigali, Rwanda	52.0
33	Kraków Lesser Poland, Poland	51.2
34	Zemun Central Serbia, Serbia	51.0
35	Bielsko-Biala Silesia, Poland	50.8
36	Cairo Cairo, Egypt	50.2
37	Botevgrad low-cost sensors Sofia, Bulgaria	49.2
38	Almaty low-cost sensors Almaty, Kazakhstan	48.1
39	Guangzhou Guangdong, China	47.4
40	Shanghai Shanghai, China	47.2
41	Kielce Świętokrzyskie, Poland	45.9
42	Lublin Lublin, Poland	45.8
43	Krotoszyn Greater Poland, Poland	44.9
44	Obrenovac Central Serbia, Serbia	44.8
45	Otwock Mazovia, Poland	44.6
46	Zgierz Łódź Voivodeship, Poland	44.4
47	Yangon Yangon, Myanmar	43.9
48	Belgrade Central Serbia, Serbia	43.8
49	Dimitrovgrad low-cost sensors Haskovo, Bulgaria	43.4
50	Liptovský Mikuláš Žilina Region, Slovakia	42.9
51	Pančevo Vojvodina, Serbia	42.6
52	Thessaloníki Central Macedonia, Greece	42.2
53	Kutno Łódź Voivodeship, Poland	41.6
54	Haskovo low-cost sensors Haskovo, Bulgaria	41.3
55	Dej Cluj County, Romania	40.4
55	Starachowice Świętokrzyskie, Poland	40.4
57	Zamość Lublin, Poland	40.3
58	Nisko Subcarpathia, Poland	40.1
59	Abidjan low-cost sensors Abidjan Autonomous District, Ivory Coast	40.0
60	Włocławek Kujawsko-Pomorskie, Poland	39.5
61	Augustów Podlasie, Poland	39.2
62	Żyrardów Mazovia, Poland	39.0
62	Lubań Lower Silesia, Poland	39.0
64	Istanbul low-cost sensors Istanbul, Turkey	38.9
65	Łódź Łódź Voivodeship, Poland	38.6
66	Sevlievo low-cost sensors Gabrovo, Bulgaria	38.4
67	Przemyśl Subcarpathia, Poland	37.7
67	Kaohsiung Takao, Taiwan	37.7
69	Chiayi City Taiwan, Taiwan	37.4
70	Ruse Ruse, Bulgaria	37.1
71	Bucharest Bucharest, Romania	37.0
71	Sremčica Central Serbia, Serbia	37.0
73	Warsaw Mazovia, Poland	36.9
73	Łask Łódź Voivodeship, Poland	36.9
75	Ružomberok Žilina Region, Slovakia	36.8
76	Douliu Taiwan, Taiwan	36.1
77	Czechowice-Dziedzice Silesia, Poland	35.9
78	Naucalpan de Juárez México, Mexico	35.5
79	Miskolc Borsod-Abaúj-Zemplén, Hungary	35.3
80	Fengshan Takao, Taiwan	34.8
80	Xonacatlán México, Mexico	34.8
82	Legionowo Mazovia, Poland	34.6
83	Tainan Taiwan, Taiwan	34.5
84	Craiova Dolj, Romania	34.2
84	Toruń Kujawsko-Pomorskie, Poland	34.2
86	Radom Mazovia, Poland	34.1
87	Xinying Taiwan, Taiwan	34.0
88	Yongkang Taiwan, Taiwan	33.9
89	Wawer Mazovia, Poland	33.7
90	Poznań Greater Poland, Poland	33.5
91	Pruszków Mazovia, Poland	33.4
92	Rzeszów Subcarpathia, Poland	32.8
92	Kranj Urban Municipality of Kranj, Slovenia	32.8
94	Konstancin-Jeziorna Mazovia, Poland	32.3
94	Kalisz Greater Poland, Poland	32.3
96	Iaşi Iași County, Romania	32.2
97	Opole Opole Voivodeship, Poland	32.1
98	Gabrovo low-cost sensors Gabrovo, Bulgaria	31.8
99	Dębica Subcarpathia, Poland	31.4
99	Chaozhou Taiwan, Taiwan	31.4
101	Murcia Murcia, Spain	31.1
101	Molina de Segura Murcia, Spain	31.1
103	Koprivnica Koprivnica-Križevci, Croatia	31.0
104	Olsztyn Warmia-Masuria, Poland	30.7
105	Beigang Taiwan, Taiwan	30.5
106	Martin Žilina Region, Slovakia	30.4
107	Siedlce Mazovia, Poland	29.7
108	Cluj-Napoca Cluj County, Romania	29.6
109	Płock Mazovia, Poland	29.4
110	Ciechanów Mazovia, Poland	29.3
110	Erlun Taiwan, Taiwan	29.3
110	Gorzów Wielkopolski Lubusz, Poland	29.3
110	Elbląg Warmia-Masuria, Poland	29.3
114	Świecie Kujawsko-Pomorskie, Poland	29.2
114	Ecatepec de Morelos México, Mexico	29.2
116	Palma Balearic Islands, Spain	29.1
117	Zhushan Taiwan, Taiwan	28.9
118	Ełk Warmia-Masuria, Poland	28.8
118	Katowice Silesia, Poland	28.8
120	Yuanlin Taiwan, Taiwan	28.7
121	Žilina Žilina Region, Slovakia	28.6
122	Kazincbarcika Borsod-Abaúj-Zemplén, Hungary	28.4
123	Gorizia Friuli Venezia Giulia, Italy	28.0
124	Mielec Subcarpathia, Poland	27.9
125	Jincheng Fukien, Taiwan	27.8
125	Čadca Žilina Region, Slovakia	27.8
127	Taibao Taiwan, Taiwan	27.7
127	Radomsko Łódź Voivodeship, Poland	27.7
129	Tuen Mun Tuen Mun, Hong Kong	27.2
129	Novo Mesto Urban Municipality of Novo Mesto, Slovenia	27.2
131	Gdynia Pomerania, Poland	27.0
132	Košice Košice Region, Slovakia	26.9
132	Celje Urban Municipality of Celje, Slovenia	26.9
134	Athens Attica, Greece	26.8
134	Hanford California, United States	26.8
136	Gdańsk Pomerania, Poland	26.7
137	Púchov Trenčín Region, Slovakia	26.6
138	Quezon City low-cost sensors National Capital Region, Philippines	26.5
139	Bydgoszcz Kujawsko-Pomorskie, Poland	26.4
139	Maribor Urban Municipality of Maribor, Slovenia	26.4
141	Hita Oita, Japan	26.3
142	Maebaru-chūō Fukuoka, Japan	26.2
143	Ptuj Urban Municipality of Ptuj, Slovenia	26.1
144	Nyíregyháza Szabolcs-Szatmár-Bereg, Hungary	26.0
145	Varna Varna, Bulgaria	25.9
145	Klagenfurt am Wörthersee Carinthia, Austria	25.9
145	Passau Bavaria, Germany	25.9
145	Racibórz Silesia, Poland	25.9
149	Brzeg Opole Voivodeship, Poland	25.8
150	Nantou Taiwan, Taiwan	25.7
151	Ljubljana Ljubljana, Slovenia	25.6
152	Wan Chai Wan Chai, Hong Kong	25.5
153	Addis Ababa Addis Ababa, Ethiopia	24.9
153	Trbovlje Municipality of Trbovlje, Slovenia	24.9
155	Fresno California, United States	24.8
156	Pécs Baranya, Hungary	24.7
156	Silao de la Victoria Guanajuato, Mexico	24.7
158	Sallanches Auvergne-Rhône-Alpes, France	24.6
159	Buzi Taiwan, Taiwan	24.2
159	Algiers Algiers, Algeria	24.2
159	Szczecin West Pomerania, Poland	24.2
159	Sopot Pomerania, Poland	24.2
159	Jastrzębie Zdrój Silesia, Poland	24.2
159	Higashigō Saga, Japan	24.2
165	Changhua Taiwan, Taiwan	24.1
165	Kłodzko Lower Silesia, Poland	24.1
167	Taichung Taiwan, Taiwan	24.0
167	Wolfsberg Carinthia, Austria	24.0
167	Wrocław Lower Silesia, Poland	24.0
170	Sofia Sofia-Capital, Bulgaria	23.9
171	Banská Bystrica Banská Bystrica Region, Slovakia	23.7
172	Giżycko Warmia-Masuria, Poland	23.6
172	Manlleu Catalonia, Spain	23.6
174	Suwałki Podlasie, Poland	23.5
175	Colombo Western Province, Sri Lanka	23.4
175	Tanushimarumachi-toyoki Fukuoka, Japan	23.4
175	Ōzu Kumamoto, Japan	23.4
175	Romans-sur-Isère Auvergne-Rhône-Alpes, France	23.4
179	Pátra West Greece, Greece	23.3
179	Ciudad Nezahualcoyotl México, Mexico	23.3
181	Corcoran California, United States	23.1
181	Tsushima Nagasaki, Japan	23.1
181	Arao Kumamoto, Japan	23.1
184	Ōmuta Fukuoka, Japan	23.0
184	Mexico City Mexico City, Mexico	23.0
184	Bakersfield California, United States	23.0
187	Białystok Podlasie, Poland	22.9
188	Erlin Taiwan, Taiwan	22.8
188	San Tung Chung Hang Islands, Hong Kong	22.8
188	Świnoujście West Pomerania, Poland	22.8
191	Koper Urban Municipality of Koper, Slovenia	22.7
192	Itoshima Fukuoka, Japan	22.6
193	Lučenec Banská Bystrica Region, Slovakia	22.5
194	Mong Kok Yau Tsim Mong District, Hong Kong	22.3
194	Prievidza Trenčín Region, Slovakia	22.3
194	Kędzierzyn-Koźle Opole Voivodeship, Poland	22.3
197	Tin Shui Wai Yuen Long, Hong Kong	22.2
197	Uekimachi-mōno Kumamoto, Japan	22.2
199	Irapuato Guanajuato, Mexico	22.1
200	Visalia California, United States	22.0

Top 200 of 2,030 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