SmogRank / History / week of May 1, 2023

Most polluted cities, week of May 1, 2023

1,364 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	63.2
2	Dushanbe Dushanbe, Tajikistan	59.3
3	Delhi Delhi, India	56.7
4	Cholula Puebla, Mexico	51.4
5	Celaya Guanajuato, Mexico	47.0
6	Lahore low-cost sensors Punjab, Pakistan	46.6
7	Tha Bo Nong Khai, Thailand	45.7
8	Fort St. John British Columbia, Canada	42.9
9	Włocławek Kujawsko-Pomorskie, Poland	41.9
9	Ciudad Benito Juárez Nuevo León, Mexico	41.9
11	Peshawar low-cost sensors Khyber Pakhtunkhwa, Pakistan	41.4
12	Rabinal Baja Verapaz, Guatemala	39.6
12	Guatemala City Guatemala, Guatemala	39.6
14	Hanoi Hanoi, Vietnam	39.4
15	Grande Prairie Alberta, Canada	39.0
16	Kathmandu low-cost sensors Bagmati Province, Nepal	37.9
17	Silao de la Victoria Guanajuato, Mexico	35.9
18	Addis Ababa Addis Ababa, Ethiopia	35.0
19	Baghdad Baghdad, Iraq	34.6
20	Beijing Beijing, China	34.5
21	Kigali Kigali, Rwanda	34.4
22	Salamanca Guanajuato, Mexico	34.0
23	San Andrés Tuxtla Veracruz, Mexico	33.1
23	León de los Aldama Guanajuato, Mexico	33.1
25	Cuernavaca Morelos, Mexico	32.8
26	Guanajuato Guanajuato, Mexico	32.7
27	Belmopan Cayo District, Belize	31.5
28	Santiago de Querétaro Querétaro, Mexico	30.9
29	Yangon Yangon, Myanmar	29.8
30	Mexico City Mexico City, Mexico	29.7
31	Tlaxcala Tlaxcala, Mexico	29.5
32	Abasolo Guanajuato, Mexico	29.4
33	Fort McMurray Alberta, Canada	29.1
34	Irapuato Guanajuato, Mexico	29.0
35	Jakarta Jakarta, Indonesia	28.8
36	Veracruz Veracruz, Mexico	28.7
37	Puebla Puebla, Mexico	28.5
38	Kinshasa low-cost sensors Kinshasa, Democratic Republic of the Congo	27.5
39	Naucalpan de Juárez México, Mexico	27.3
40	Karachi low-cost sensors Sindh, Pakistan	26.9
41	San Miguel de Allende Guanajuato, Mexico	26.8
42	San Luis de la Paz Guanajuato, Mexico	26.6
43	Astana Astana, Kazakhstan	26.3
44	Pristina Pristina, Kosovo	26.0
45	Aguascalientes Aguascalientes, Mexico	25.5
46	Santa Catarina Nuevo León, Mexico	25.2
47	Guangzhou Guangdong, China	24.9
47	García Nuevo León, Mexico	24.9
49	Monterrey Nuevo León, Mexico	24.6
50	Pachuca de Soto Hidalgo, Mexico	24.4
51	Shenyang Liaoning, China	23.5
52	Hyderabad Telangana, India	23.3
53	Islamabad low-cost sensors Islamabad, Pakistan	23.2
54	Jastrzębie Zdrój Silesia, Poland	22.5
55	Valjevo Central Serbia, Serbia	21.5
56	Benevento Campania, Italy	21.1
57	Antananarivo Analamanga, Madagascar	20.1
58	Salor Tashkent Region, Uzbekistan	19.5
58	Laredo Texas, United States	19.5
60	Děčín Ústí nad Labem Region, Czechia	19.3
61	Ciudad Juárez Chihuahua, Mexico	19.2
62	Novi Pazar Central Serbia, Serbia	18.9
63	Ćuprija Central Serbia, Serbia	18.8
64	Lazarevac Central Serbia, Serbia	18.7
65	Obrenovac Central Serbia, Serbia	18.4
65	Conakry Conakry, Guinea	18.4
67	Brawley California, United States	18.2
68	Havířov Moravian-Silesian Region, Czechia	18.0
69	Wan Chai Wan Chai, Hong Kong	17.7
70	Racibórz Silesia, Poland	17.6
71	Ashgabat Ashgabat, Turkmenistan	17.3
71	Athens Attica, Greece	17.3
71	Edinburg Texas, United States	17.3
74	Bielsko-Biala Silesia, Poland	17.2
75	Acharnés Attica, Greece	17.0
76	Colombo Western Province, Sri Lanka	16.7
76	Czechowice-Dziedzice Silesia, Poland	16.7
78	Zemun Central Serbia, Serbia	16.5
79	Mumbai Maharashtra, India	16.4
80	Lagos low-cost sensors Lagos, Nigeria	16.2
80	Český Těšín Moravian-Silesian Region, Czechia	16.2
82	Bohumín Moravian-Silesian Region, Czechia	16.1
83	Eagle Pass Texas, United States	16.0
84	Baku Baki, Azerbaijan	15.9
84	Pirot Central Serbia, Serbia	15.9
84	Frýdek-Místek Moravian-Silesian Region, Czechia	15.9
84	Banja Luka Srpska, Bosnia and Herzegovina	15.9
88	Texarkana Texas, United States	15.8
89	Béthune Hauts-de-France, France	15.7
90	Ancona The Marches, Italy	15.5
91	Beroun Central Bohemia, Czechia	15.4
92	Ostrava Moravian-Silesian Region, Czechia	15.3
93	Greiz Thuringia, Germany	15.2
94	Kadaň Ústí nad Labem Region, Czechia	15.1
94	Mission Bend Texas, United States	15.1
96	Asprópyrgos Attica, Greece	15.0
96	Abidjan low-cost sensors Abidjan Autonomous District, Ivory Coast	15.0
98	Čačak Central Serbia, Serbia	14.8
99	Kędzierzyn-Koźle Opole Voivodeship, Poland	14.7
99	Houston Texas, United States	14.7
101	Liberec Liberec Region, Czechia	14.6
102	Mong Kok Yau Tsim Mong District, Hong Kong	14.5
103	Brighton England, United Kingdom	14.4
103	Trnava Trnava Region, Slovakia	14.4
103	Mladá Boleslav Central Bohemia, Czechia	14.4
106	Belgrade Central Serbia, Serbia	14.3
107	Izegem Flanders, Belgium	14.2
107	Coconut Creek Florida, United States	14.2
109	Smederevo Central Serbia, Serbia	14.0
109	Kladno Central Bohemia, Czechia	14.0
111	Baytown Texas, United States	13.8
111	Conroe Texas, United States	13.8
113	Thessaloníki Central Macedonia, Greece	13.7
113	Valenciennes Hauts-de-France, France	13.7
113	Corpus Christi Texas, United States	13.7
116	Pančevo Vojvodina, Serbia	13.6
116	Cardiff Wales, United Kingdom	13.6
116	Graz Styria, Austria	13.6
116	Senica Trnava Region, Slovakia	13.6
116	Kraków Lesser Poland, Poland	13.6
121	Humenné Prešov Region, Slovakia	13.5
121	's-Gravenzande South Holland, The Netherlands	13.5
121	Menen Flanders, Belgium	13.5
121	Krefeld North Rhine-Westphalia, Germany	13.5
121	Prague Prague, Czechia	13.5
121	Canvey Island England, United Kingdom	13.5
127	Kragujevac Central Serbia, Serbia	13.4
128	Roeselare Flanders, Belgium	13.3
128	Valašské Meziříčí Zlín, Czechia	13.3
128	Most Ústí nad Labem Region, Czechia	13.3
128	Hradec Králové Hradec Králové Region, Czechia	13.3
132	Šabac Central Serbia, Serbia	13.2
133	Niš Central Serbia, Serbia	13.1
133	Koksijde Flanders, Belgium	13.1
133	Lille Hauts-de-France, France	13.1
133	Kłodzko Lower Silesia, Poland	13.1
137	Prešov Prešov Region, Slovakia	13.0
137	Győr Győr-Moson-Sopron, Hungary	13.0
137	Olomouc Olomouc Region, Czechia	13.0
137	Pesaro The Marches, Italy	13.0
137	Novi Sad Vojvodina, Serbia	13.0
137	Austin Texas, United States	13.0
137	Pasadena Texas, United States	13.0
144	Košice Košice Region, Slovakia	12.9
144	Ruse Ruse, Bulgaria	12.9
144	Dunkirk Hauts-de-France, France	12.9
144	Jelenia Góra Lower Silesia, Poland	12.9
148	La Línea de la Concepción Andalusia, Spain	12.8
148	Maldegem Flanders, Belgium	12.8
148	Altenburg Thuringia, Germany	12.8
148	Missouri City Texas, United States	12.8
152	Kortrijk Flanders, Belgium	12.7
152	Katowice Silesia, Poland	12.7
152	Vigo Galicia, Spain	12.7
155	Brno South Moravian, Czechia	12.6
155	Opole Opole Voivodeship, Poland	12.6
155	Richmond California, United States	12.6
158	Evergem Flanders, Belgium	12.5
159	Wrocław Lower Silesia, Poland	12.4
159	Saginaw Texas, United States	12.4
161	Ulu Bedok Singapore	12.3
161	Kościan Greater Poland, Poland	12.3
161	Naples Campania, Italy	12.3
161	Jesi The Marches, Italy	12.3
165	Spišská Nová Ves Košice Region, Slovakia	12.1
165	Fanling North District, Hong Kong	12.1
165	Hobbs New Mexico, United States	12.1
168	Weiden Bavaria, Germany	12.0
169	Khalándrion Attica, Greece	11.9
169	Žilina Žilina Region, Slovakia	11.9
169	Znojmo South Moravian, Czechia	11.9
169	Ústí nad Labem Ústí nad Labem Region, Czechia	11.9
169	Łask Łódź Voivodeship, Poland	11.9
169	Falconara Marittima The Marches, Italy	11.9
169	Corsicana Texas, United States	11.9
176	Botevgrad low-cost sensors Sofia, Bulgaria	11.8
176	Jülich North Rhine-Westphalia, Germany	11.8
176	Halle (Saale) Saxony-Anhalt, Germany	11.8
176	Toruń Kujawsko-Pomorskie, Poland	11.8
180	Tarnów Lesser Poland, Poland	11.7
180	České Budějovice South Bohemian Region, Czechia	11.7
182	Abuja low-cost sensors FCT, Nigeria	11.6
182	Litvínov Ústí nad Labem Region, Czechia	11.6
184	Sremčica Central Serbia, Serbia	11.5
184	Victoria Central and Western, Hong Kong	11.5
184	Maassluis South Holland, The Netherlands	11.5
184	Zlín Zlín, Czechia	11.5
184	St. Louis Missouri, United States	11.5
189	Canterbury England, United Kingdom	11.4
189	Beveren Flanders, Belgium	11.4
189	Antwerp Flanders, Belgium	11.4
189	Shreveport Louisiana, United States	11.4
193	Żyrardów Mazovia, Poland	11.3
193	Bor Central Serbia, Serbia	11.3
193	Tsuen Wan Tsuen Wan, Hong Kong	11.3
193	Sau Mau Ping Kwun Tong District, Hong Kong	11.3
193	Grays England, United Kingdom	11.3
193	Teltow Brandenburg, Germany	11.3
193	Gdynia Pomerania, Poland	11.3
193	Tallahassee Florida, United States	11.3

Top 200 of 1,364 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