SmogRank / History / week of April 3, 2023

Most polluted cities, week of April 3, 2023

1,332 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	N'Djamena N’Djaména, Chad	158.7
2	Reykjavík Capital Region, Iceland	149.8
3	Dhaka low-cost sensors Dhaka Division, Bangladesh	102.7
4	Tha Bo Nong Khai, Thailand	100.2
5	Bamako Bamako, Mali	77.2
6	Lahore low-cost sensors Punjab, Pakistan	70.0
7	Shenyang Liaoning, China	67.1
8	Alexandria Alexandria, Egypt	64.2
9	Kathmandu low-cost sensors Bagmati Province, Nepal	62.0
10	Tlaquepaque Jalisco, Mexico	52.7
11	Delhi Delhi, India	52.5
12	Hanoi Hanoi, Vietnam	50.8
13	Cholula Puebla, Mexico	49.8
14	Novi Pazar Central Serbia, Serbia	44.9
15	Valjevo Central Serbia, Serbia	43.6
16	Baghdad Baghdad, Iraq	42.2
17	Jakarta Jakarta, Indonesia	41.8
18	Hyderabad Telangana, India	40.8
19	San Mateo Atenco México, Mexico	39.3
20	Lazarevac Central Serbia, Serbia	37.3
20	Tepeji del Río de Ocampo Hidalgo, Mexico	37.3
22	Mumbai Maharashtra, India	37.2
23	Celaya Guanajuato, Mexico	37.1
24	Mexicali Baja California, Mexico	36.6
25	Yangon Yangon, Myanmar	35.6
26	Peshawar low-cost sensors Khyber Pakhtunkhwa, Pakistan	35.1
27	Pristina Pristina, Kosovo	34.7
28	Shanghai Shanghai, China	34.4
29	Pirot Central Serbia, Serbia	34.3
30	Xonacatlán México, Mexico	34.0
30	Ciudad Benito Juárez Nuevo León, Mexico	34.0
32	Conakry Conakry, Guinea	33.9
33	Toluca México, Mexico	33.2
34	Niš Central Serbia, Serbia	32.4
35	Khartoum Khartoum, Sudan	31.9
36	Kragujevac Central Serbia, Serbia	31.8
37	San Francisco Tlalcilalcalpan México, Mexico	31.7
38	Guadalajara Jalisco, Mexico	31.6
39	Smederevo Central Serbia, Serbia	31.4
40	Pančevo Vojvodina, Serbia	31.2
41	Rabinal Baja Verapaz, Guatemala	30.5
41	Guatemala City Guatemala, Guatemala	30.5
43	Guangzhou Guangdong, China	30.2
44	Zemun Central Serbia, Serbia	29.9
45	Islamabad low-cost sensors Islamabad, Pakistan	29.8
46	Obrenovac Central Serbia, Serbia	29.6
47	Jeddah Mecca Region, Saudi Arabia	29.4
48	Kampala low-cost sensors Central Region, Uganda	28.9
49	Zapopan Jalisco, Mexico	28.7
50	Ciudad Nezahualcoyotl México, Mexico	28.4
51	Abuja low-cost sensors FCT, Nigeria	28.0
52	Puebla Puebla, Mexico	27.2
53	Cayenne Guyane, French Guiana	27.0
54	Belgrade Central Serbia, Serbia	26.9
55	Manama Manama, Bahrain	26.6
56	Beijing Beijing, China	25.7
57	Čačak Central Serbia, Serbia	25.5
58	Futog Vojvodina, Serbia	25.2
59	Naucalpan de Juárez México, Mexico	25.1
60	Mexico City Mexico City, Mexico	24.9
61	Şabāḩ as Sālim Mubārak al Kabīr, Kuwait	24.6
62	Santiago de Querétaro Querétaro, Mexico	24.2
63	Sremčica Central Serbia, Serbia	24.1
63	García Nuevo León, Mexico	24.1
65	Havířov Moravian-Silesian Region, Czechia	23.4
65	Cuernavaca Morelos, Mexico	23.4
67	Frýdek-Místek Moravian-Silesian Region, Czechia	23.2
67	Banja Luka Srpska, Bosnia and Herzegovina	23.2
69	Wan Chai Wan Chai, Hong Kong	22.9
70	Karachi low-cost sensors Sindh, Pakistan	22.7
71	Almaty low-cost sensors Almaty, Kazakhstan	22.6
71	Bohumín Moravian-Silesian Region, Czechia	22.6
73	Salamanca Guanajuato, Mexico	22.5
74	Český Těšín Moravian-Silesian Region, Czechia	22.4
75	Santa Catarina Nuevo León, Mexico	21.9
75	Ciudad Juárez Chihuahua, Mexico	21.9
77	Salor Tashkent Region, Uzbekistan	21.6
77	Mong Kok Yau Tsim Mong District, Hong Kong	21.6
79	San Andrés Tuxtla Veracruz, Mexico	21.5
79	Monterrey Nuevo León, Mexico	21.5
81	Baku Baki, Azerbaijan	20.9
82	Ostrava Moravian-Silesian Region, Czechia	20.8
83	Apizaco Tlaxcala, Mexico	20.7
84	Addis Ababa Addis Ababa, Ethiopia	20.5
84	Valašské Meziříčí Zlín, Czechia	20.5
84	Pachuca de Soto Hidalgo, Mexico	20.5
84	León de los Aldama Guanajuato, Mexico	20.5
88	Irapuato Guanajuato, Mexico	20.3
89	Ponca City Oklahoma, United States	20.2
90	Łask Łódź Voivodeship, Poland	20.1
91	Děčín Ústí nad Labem Region, Czechia	19.7
92	Victoria Central and Western, Hong Kong	19.2
92	Cadereyta Jiménez Nuevo León, Mexico	19.2
94	Accra low-cost sensors Greater Accra, Ghana	19.0
95	Bor Central Serbia, Serbia	18.9
96	Ciudad Apodaca Nuevo León, Mexico	18.6
97	Guanajuato Guanajuato, Mexico	18.5
98	Krefeld North Rhine-Westphalia, Germany	18.4
99	Colombo Western Province, Sri Lanka	18.3
99	Pécs Baranya, Hungary	18.3
101	Roubaix Hauts-de-France, France	18.2
101	San Miguel de Allende Guanajuato, Mexico	18.2
103	Iaşi Iași County, Romania	18.1
103	Roeselare Flanders, Belgium	18.1
103	Izegem Flanders, Belgium	18.1
106	Antananarivo Analamanga, Madagascar	18.0
106	Tsuen Wan Tsuen Wan, Hong Kong	18.0
108	Bogotá Bogota D.C., Colombia	17.9
109	Kwai Chung Kwai Tsing District, Hong Kong	17.7
109	Evergem Flanders, Belgium	17.7
111	Ashgabat Ashgabat, Turkmenistan	17.6
111	San Luis de la Paz Guanajuato, Mexico	17.6
111	Liberpolis County of Osijek-Baranja, Croatia	17.6
114	Botevgrad low-cost sensors Sofia, Bulgaria	17.5
114	Coatzacoalcos Veracruz, Mexico	17.5
116	Tai Po Tai Po, Hong Kong	17.4
116	Fanling North District, Hong Kong	17.4
116	Kortrijk Flanders, Belgium	17.4
116	Užice Central Serbia, Serbia	17.4
116	Veracruz Veracruz, Mexico	17.4
121	Ćuprija Central Serbia, Serbia	17.3
121	Most Ústí nad Labem Region, Czechia	17.3
123	Belmopan Cayo District, Belize	17.2
123	Tijuana Baja California, Mexico	17.2
125	San Luis Potosí San Luis Potosí, Mexico	17.1
125	Victoria de Durango Durango, Mexico	17.1
127	Radom Mazovia, Poland	17.0
127	Menen Flanders, Belgium	17.0
127	Ciudad General Escobedo Nuevo León, Mexico	17.0
130	Bishkek low-cost sensors Bishkek, Kyrgyzstan	16.9
130	Tin Shui Wai Yuen Long, Hong Kong	16.9
132	Bremerhaven Bremen, Germany	16.7
132	Toruń Kujawsko-Pomorskie, Poland	16.7
132	Kutno Łódź Voivodeship, Poland	16.7
135	Zlín Zlín, Czechia	16.6
135	Aguascalientes Aguascalientes, Mexico	16.6
137	Lublin Lublin, Poland	16.4
137	Lagos low-cost sensors Lagos, Nigeria	16.4
139	Beroun Central Bohemia, Czechia	16.3
140	Győr Győr-Moson-Sopron, Hungary	16.2
140	Abasolo Guanajuato, Mexico	16.2
142	Chisinau Chișinău Municipality, Moldova	16.0
143	Abidjan low-cost sensors Abidjan Autonomous District, Ivory Coast	15.8
143	Cottbus Brandenburg, Germany	15.8
143	Zgierz Łódź Voivodeship, Poland	15.8
146	Żyrardów Mazovia, Poland	15.7
146	Bremen Bremen, Germany	15.7
146	Lille Hauts-de-France, France	15.7
149	Aberdeen Southern District, Hong Kong	15.6
149	's-Gravenzande South Holland, The Netherlands	15.6
149	Oldenburg Lower Saxony, Germany	15.6
149	Hradec Králové Hradec Králové Region, Czechia	15.6
149	Włocławek Kujawsko-Pomorskie, Poland	15.6
154	Pruszków Mazovia, Poland	15.5
154	Grays England, United Kingdom	15.5
154	Eindhoven North Brabant, The Netherlands	15.5
154	Willebroek Flanders, Belgium	15.5
154	Hamburg Hamburg, Germany	15.5
154	Alessandria Piedmont, Italy	15.5
160	Sau Mau Ping Kwun Tong District, Hong Kong	15.4
160	Lochristi Flanders, Belgium	15.4
160	Beveren Flanders, Belgium	15.4
160	Antwerp Flanders, Belgium	15.4
164	Znojmo South Moravian, Czechia	15.3
165	Acharnés Attica, Greece	15.2
165	Maldegem Flanders, Belgium	15.2
165	Valenciennes Hauts-de-France, France	15.2
168	Dieppe Normandy, France	15.1
169	Prague Prague, Czechia	15.0
169	Oviedo Asturias, Spain	15.0
171	Athens Attica, Greece	14.9
172	Pilsen Plzeň Region, Czechia	14.8
173	Ruse Ruse, Bulgaria	14.7
173	San Tung Chung Hang Islands, Hong Kong	14.7
173	Gent Flanders, Belgium	14.7
176	Bucharest Bucharest, Romania	14.6
176	Mons Wallonia, Belgium	14.6
176	Béthune Hauts-de-France, France	14.6
179	Arrecife Canary Islands, Spain	14.5
179	Zwijndrecht Flanders, Belgium	14.5
179	Kapellen Flanders, Belgium	14.5
179	Frankfurt (Oder) Brandenburg, Germany	14.5
179	Žilina Žilina Region, Slovakia	14.5
179	Olomouc Olomouc Region, Czechia	14.5
185	Vigo Galicia, Spain	14.4
186	Maassluis South Holland, The Netherlands	14.3
186	Itzehoe Schleswig-Holstein, Germany	14.3
186	Friesoythe Lower Saxony, Germany	14.3
186	Duisburg North Rhine-Westphalia, Germany	14.3
190	Kiel Schleswig-Holstein, Germany	14.2
190	Liberec Liberec Region, Czechia	14.2
190	Naples Campania, Italy	14.2
193	Wilhelmshaven Lower Saxony, Germany	14.1
193	Blankenfelde-Mahlow Brandenburg, Germany	14.1
195	San Isidro Canary Islands, Spain	14.0
195	Mühlhausen Thuringia, Germany	14.0
195	Falconara Marittima The Marches, Italy	14.0
198	Thessaloníki Central Macedonia, Greece	13.9
198	Sha Tin Sha Tin, Hong Kong	13.9
198	Cardiff Wales, United Kingdom	13.9

Top 200 of 1,332 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