SmogRank / History / week of December 30, 2024

Most polluted cities, week of December 30, 2024

1,824 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	237.8
2	Sarajevo Federation of B&H, Bosnia and Herzegovina	119.7
3	Dushanbe Dushanbe, Tajikistan	103.4
4	Mumbai Maharashtra, India	85.3
5	Chennai Tamil Nadu, India	76.4
6	Badger Alaska, United States	55.0
7	Phoenix Arizona, United States	50.5
8	Athens Attica, Greece	49.3
9	Zagreb low-cost sensors Zagreb, Croatia	48.9
10	Bangkok low-cost sensors Bangkok, Thailand	46.8
11	Botevgrad low-cost sensors Sofia, Bulgaria	46.7
12	Manlleu Catalonia, Spain	45.3
13	Yerevan low-cost sensors Yerevan, Armenia	44.4
14	Thessaloníki Central Macedonia, Greece	41.9
15	Wan Chai Wan Chai, Hong Kong	41.7
16	Ciudad Nezahualcoyotl México, Mexico	41.5
17	Tuen Mun Tuen Mun, Hong Kong	41.2
18	Jurupa Valley California, United States	40.3
19	Debrecen low-cost sensors Hajdú-Bihar, Hungary	39.5
20	Mesa Arizona, United States	38.4
21	Accra low-cost sensors Greater Accra, Ghana	37.9
22	Haskovo low-cost sensors Haskovo, Bulgaria	37.6
23	Ružomberok Žilina Region, Slovakia	37.5
24	Gorizia Friuli Venezia Giulia, Italy	37.4
25	Chiang Mai low-cost sensors Chiang Mai, Thailand	36.3
26	Tin Shui Wai Yuen Long, Hong Kong	35.9
27	San Tung Chung Hang Islands, Hong Kong	35.7
28	Klagenfurt am Wörthersee Carinthia, Austria	34.7
29	Codlea Brașov County, Romania	34.4
30	Victoria Central and Western, Hong Kong	33.9
31	Dimitrovgrad low-cost sensors Haskovo, Bulgaria	33.8
32	Sevlievo low-cost sensors Gabrovo, Bulgaria	33.6
32	Medina Estates low-cost sensors Greater Accra, Ghana	33.6
34	Istanbul low-cost sensors Istanbul, Turkey	33.4
34	Augsburg Bavaria, Germany	33.4
36	Craiova Dolj, Romania	33.2
36	Kempten (Allgäu) Bavaria, Germany	33.2
38	Fairbanks Alaska, United States	32.9
39	Tai Po Tai Po, Hong Kong	32.8
39	Veszprém Veszprém, Hungary	32.8
41	Tsuen Wan Tsuen Wan, Hong Kong	32.7
42	Ponferrada Castille and León, Spain	32.4
42	Tijuana Baja California, Mexico	32.4
44	Koper Urban Municipality of Koper, Slovenia	32.3
45	Graz Styria, Austria	32.1
46	Sau Mau Ping Kwun Tong District, Hong Kong	31.9
47	Martin Žilina Region, Slovakia	31.8
48	Sham Shui Po Sham Shui Po District, Hong Kong	31.5
49	Dej Cluj County, Romania	31.0
50	Compton California, United States	30.8
51	Munich Bavaria, Germany	30.5
52	Fanling North District, Hong Kong	30.1
53	Zgierz Łódź Voivodeship, Poland	29.9
53	Anaheim California, United States	29.9
55	Celje Urban Municipality of Celje, Slovenia	29.8
56	Molina de Segura Murcia, Spain	29.6
57	Dubai low-cost sensors Dubai, United Arab Emirates	29.5
58	Piraeus Attica, Greece	29.4
59	Sha Tin Sha Tin, Hong Kong	29.1
59	Ingolstadt Bavaria, Germany	29.1
61	Fengshan Takao, Taiwan	28.8
62	Chaozhou Taiwan, Taiwan	28.5
62	Jastrzębie Zdrój Silesia, Poland	28.5
64	Acharnés Attica, Greece	28.4
65	Kaohsiung Takao, Taiwan	28.3
66	Mexico City Mexico City, Mexico	28.2
67	Aberdeen Southern District, Hong Kong	28.1
67	Racibórz Silesia, Poland	28.1
67	Czechowice-Dziedzice Silesia, Poland	28.1
70	Tempe Arizona, United States	27.8
71	Ljubljana Ljubljana, Slovenia	27.7
72	Riverside California, United States	27.6
73	Winterthur low-cost sensors Zurich, Switzerland	27.5
74	Baku Baki, Azerbaijan	27.3
75	Long Beach California, United States	27.2
76	Burbank California, United States	27.1
77	Kranj Urban Municipality of Kranj, Slovenia	26.9
78	Naucalpan de Juárez México, Mexico	26.8
79	Kędzierzyn-Koźle Opole Voivodeship, Poland	26.6
80	Fresno California, United States	26.3
81	Glendale Arizona, United States	26.2
82	Żywiec Silesia, Poland	25.8
82	Maribor Urban Municipality of Maribor, Slovenia	25.8
84	Worms Rheinland-Pfalz, Germany	25.5
85	Linz Upper Austria, Austria	25.1
86	Murcia Murcia, Spain	25.0
87	Gabrovo low-cost sensors Gabrovo, Bulgaria	24.8
88	Miskolc Borsod-Abaúj-Zemplén, Hungary	24.7
89	Asprópyrgos Attica, Greece	24.5
89	Novo Mesto Urban Municipality of Novo Mesto, Slovenia	24.5
91	Carson low-cost sensors California, United States	24.3
91	Los Angeles California, United States	24.3
93	Stodůlky low-cost sensors Prague, Czechia	24.2
94	Jincheng Fukien, Taiwan	24.1
95	Tübingen Baden-Wurttemberg, Germany	24.0
96	Chula Vista California, United States	23.9
97	Otwock Mazovia, Poland	23.7
97	Čadca Žilina Region, Slovakia	23.7
97	Hawthorne low-cost sensors California, United States	23.7
100	Addis Ababa Addis Ababa, Ethiopia	23.1
100	Douliu Taiwan, Taiwan	23.1
100	Ourense Galicia, Spain	23.1
100	Fontana California, United States	23.1
100	San Diego California, United States	23.1
105	Opole Opole Voivodeship, Poland	23.0
105	Visalia California, United States	23.0
107	Alcalá de Guadaira Andalusia, Spain	22.9
107	Bohumín Moravian-Silesian Region, Czechia	22.9
109	Augustów Podlasie, Poland	22.8
109	Wolfsberg Carinthia, Austria	22.8
111	Sevilla Andalusia, Spain	22.7
111	Lillestrøm Akershus, Norway	22.7
113	Traun Upper Austria, Austria	22.5
113	Pécs Baranya, Hungary	22.5
113	Púchov Trenčín Region, Slovakia	22.5
116	Győr Győr-Moson-Sopron, Hungary	22.4
117	Žilina Žilina Region, Slovakia	22.3
118	Ptuj Urban Municipality of Ptuj, Slovenia	22.2
119	Olomouc Olomouc Region, Czechia	22.0
120	Nyíregyháza Szabolcs-Szatmár-Bereg, Hungary	21.9
121	Sarpsborg Østfold, Norway	21.8
122	Yongkang Taiwan, Taiwan	21.6
122	Tainan Taiwan, Taiwan	21.6
124	Banská Bystrica Banská Bystrica Region, Slovakia	21.5
124	Bakersfield California, United States	21.5
126	Bellinzona Ticino, Switzerland	21.4
126	Trbovlje Municipality of Trbovlje, Slovenia	21.4
128	Fredrikstad Østfold, Norway	21.3
129	Socorro Texas, United States	21.2
130	Zhushan Taiwan, Taiwan	21.0
130	Chiayi City Taiwan, Taiwan	21.0
130	Znojmo South Moravian, Czechia	21.0
133	Kazincbarcika Borsod-Abaúj-Zemplén, Hungary	20.9
134	Nuremberg Bavaria, Germany	20.7
135	Košice Košice Region, Slovakia	20.6
136	Xinying Taiwan, Taiwan	20.5
137	Prešov Prešov Region, Slovakia	20.4
137	Kielce Świętokrzyskie, Poland	20.4
137	Inglewood low-cost sensors California, United States	20.4
140	Agüimes Canary Islands, Spain	20.3
140	Prievidza Trenčín Region, Slovakia	20.3
140	Torrance low-cost sensors California, United States	20.3
143	Speyer Rheinland-Pfalz, Germany	20.2
143	Lučenec Banská Bystrica Region, Slovakia	20.2
145	León Castille and León, Spain	20.1
146	El Cajon California, United States	19.9
147	Ansfelden Upper Austria, Austria	19.8
148	Włocławek Kujawsko-Pomorskie, Poland	19.7
148	Calexico California, United States	19.7
148	Hanford California, United States	19.7
151	Yuanlin Taiwan, Taiwan	19.6
151	Bamberg Bavaria, Germany	19.6
151	Lillehammer Innlandet, Norway	19.6
151	Oceanside California, United States	19.6
155	Iloilo low-cost sensors Western Visayas, Philippines	19.5
156	Nantou Taiwan, Taiwan	19.4
156	Maspalomas Canary Islands, Spain	19.4
156	Handlová Trenčín Region, Slovakia	19.4
159	Erlun Taiwan, Taiwan	19.3
159	Baden Lower Austria, Austria	19.3
161	Bailén Andalusia, Spain	19.2
161	Perchtoldsdorf Lower Austria, Austria	19.2
163	Přerov Olomouc Region, Czechia	19.1
163	Florin low-cost sensors California, United States	19.1
165	Wels Upper Austria, Austria	19.0
165	Kraków Lesser Poland, Poland	19.0
167	Dębica Subcarpathia, Poland	18.8
167	Ingenio Canary Islands, Spain	18.8
167	Zvolen Banská Bystrica Region, Slovakia	18.8
170	Passau Bavaria, Germany	18.7
170	Pezinok Bratislava Region, Slovakia	18.7
172	Esztergom Komárom-Esztergom, Hungary	18.5
172	Collado-Villalba Madrid, Spain	18.5
174	Bucharest Bucharest, Romania	18.4
175	Beigang Taiwan, Taiwan	18.3
176	Radom Mazovia, Poland	18.2
176	Würzburg Bavaria, Germany	18.2
176	Partizánske Trenčín Region, Slovakia	18.2
176	Ostrava Moravian-Silesian Region, Czechia	18.2
180	Vienna Vienna, Austria	18.1
180	Kalisz Greater Poland, Poland	18.1
182	Žiar nad Hronom Banská Bystrica Region, Slovakia	18.0
182	Valdemoro Madrid, Spain	18.0
184	Traunreut Bavaria, Germany	17.9
184	Havířov Moravian-Silesian Region, Czechia	17.9
186	Trebišov Košice Region, Slovakia	17.8
186	Humenné Prešov Region, Slovakia	17.8
186	Lublin Lublin, Poland	17.8
186	Łask Łódź Voivodeship, Poland	17.8
186	Lomita low-cost sensors California, United States	17.8
191	Nisko Subcarpathia, Poland	17.7
191	Huelva Andalusia, Spain	17.7
191	Heilbronn Baden-Wurttemberg, Germany	17.7
191	Kłodzko Lower Silesia, Poland	17.7
191	Modesto California, United States	17.7
196	Casa Grande Arizona, United States	17.5
197	Clovis California, United States	17.4
198	Erlin Taiwan, Taiwan	17.3
199	Katowice Silesia, Poland	17.1
199	Stockton California, United States	17.1

Top 200 of 1,824 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