SmogRank / History / week of March 27, 2023

Most polluted cities, week of March 27, 2023

1,365 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	Reykjavík Capital Region, Iceland	321.1
2	N'Djamena N’Djaména, Chad	151.5
3	Tlaquepaque Jalisco, Mexico	81.5
4	Dhaka low-cost sensors Dhaka Division, Bangladesh	81.4
5	Lahore low-cost sensors Punjab, Pakistan	79.7
6	Bamako Bamako, Mali	77.4
7	Beijing Beijing, China	62.9
8	Kathmandu low-cost sensors Bagmati Province, Nepal	59.5
9	Shenyang Liaoning, China	58.5
10	San Mateo Atenco México, Mexico	51.7
11	Delhi Delhi, India	50.8
12	Ciudad Benito Juárez Nuevo León, Mexico	47.9
13	Abuja low-cost sensors FCT, Nigeria	47.1
14	Baghdad Baghdad, Iraq	42.5
15	Alexandria Alexandria, Egypt	41.8
16	Hanoi Hanoi, Vietnam	40.4
17	Guadalajara Jalisco, Mexico	39.8
18	Peshawar low-cost sensors Khyber Pakhtunkhwa, Pakistan	38.9
19	Celaya Guanajuato, Mexico	38.1
20	Xonacatlán México, Mexico	36.2
21	Mexicali Baja California, Mexico	35.9
22	Yangon Yangon, Myanmar	35.7
23	Kampala low-cost sensors Central Region, Uganda	34.2
23	Khartoum Khartoum, Sudan	34.2
23	Ciudad Nezahualcoyotl México, Mexico	34.2
26	Shanghai Shanghai, China	33.6
27	San Salvador Tizatlalli México, Mexico	33.1
28	San Francisco Tlalcilalcalpan México, Mexico	32.8
29	Toluca México, Mexico	32.5
30	Ciudad Juárez Chihuahua, Mexico	31.1
31	García Nuevo León, Mexico	30.1
32	Conakry Conakry, Guinea	29.2
33	Santa Catarina Nuevo León, Mexico	28.6
34	Islamabad low-cost sensors Islamabad, Pakistan	28.3
35	Monterrey Nuevo León, Mexico	28.2
36	Mexico City Mexico City, Mexico	27.9
36	Ciudad Apodaca Nuevo León, Mexico	27.9
38	Naucalpan de Juárez México, Mexico	27.8
39	Salamanca Guanajuato, Mexico	27.4
40	Santiago de Querétaro Querétaro, Mexico	27.1
41	Şabāḩ as Sālim Mubārak al Kabīr, Kuwait	26.6
42	Tepeji del Río de Ocampo Hidalgo, Mexico	26.1
43	Pristina Pristina, Kosovo	25.9
44	Aguascalientes Aguascalientes, Mexico	25.8
45	Guangzhou Guangdong, China	25.4
46	Salor Tashkent Region, Uzbekistan	25.3
47	Baku Baki, Azerbaijan	24.9
48	Addis Ababa Addis Ababa, Ethiopia	24.5
48	Puebla Puebla, Mexico	24.5
50	León de los Aldama Guanajuato, Mexico	24.4
51	Guatemala City Guatemala, Guatemala	24.2
52	Mumbai Maharashtra, India	24.1
53	Cadereyta Jiménez Nuevo León, Mexico	24.0
54	Almaty low-cost sensors Almaty, Kazakhstan	23.4
55	Lima Lima Province, Peru	23.3
56	San Miguel de Allende Guanajuato, Mexico	22.8
57	Niš Central Serbia, Serbia	22.7
58	Pachuca de Soto Hidalgo, Mexico	22.5
58	San Luis Potosí San Luis Potosí, Mexico	22.5
60	Bishkek low-cost sensors Bishkek, Kyrgyzstan	22.3
60	Rabinal Baja Verapaz, Guatemala	22.3
62	Colombo Western Province, Sri Lanka	22.2
62	San Luis de la Paz Guanajuato, Mexico	22.2
64	Chisinau Chișinău Municipality, Moldova	22.1
65	Irapuato Guanajuato, Mexico	21.8
66	Karachi low-cost sensors Sindh, Pakistan	21.2
67	San Andrés Tuxtla Veracruz, Mexico	20.9
67	Minatitlán Veracruz, Mexico	20.9
69	Guanajuato Guanajuato, Mexico	20.1
70	Sama Asturias, Spain	19.9
71	Wan Chai Wan Chai, Hong Kong	19.7
71	Cuernavaca Morelos, Mexico	19.7
73	Yerevan low-cost sensors Yerevan, Armenia	18.7
74	La Orotava Canary Islands, Spain	18.6
75	Oviedo Asturias, Spain	18.5
76	Gijón Asturias, Spain	18.4
77	Abasolo Guanajuato, Mexico	17.7
78	Jastrzębie Zdrój Silesia, Poland	17.6
79	Tulsa Oklahoma, United States	17.5
80	Mong Kok Yau Tsim Mong District, Hong Kong	17.3
80	Tijuana Baja California, Mexico	17.3
82	Dushanbe Dushanbe, Tajikistan	17.2
83	Las Palmas de Gran Canaria Canary Islands, Spain	17.1
84	Kościan Greater Poland, Poland	17.0
85	Lublin Lublin, Poland	16.7
85	Apizaco Tlaxcala, Mexico	16.7
85	Belmopan Cayo District, Belize	16.7
88	San Francisco De Borja Lima region, Peru	15.7
89	Otwock Mazovia, Poland	15.6
90	Veracruz Veracruz, Mexico	15.5
90	Edmonton Alberta, Canada	15.5
92	Acharnés Attica, Greece	15.4
92	Houston Texas, United States	15.4
92	Santa Anita - Los Ficus Lima region, Peru	15.4
95	Edinburg Texas, United States	15.1
96	Jenks Oklahoma, United States	15.0
97	Jeddah Mecca Region, Saudi Arabia	14.8
97	Ashgabat Ashgabat, Turkmenistan	14.8
97	Arona Canary Islands, Spain	14.8
100	Łuków Lublin, Poland	14.5
100	Laredo Texas, United States	14.5
102	Villa Poeta José Gálvez Barrenechea Lima region, Peru	14.4
103	Łask Łódź Voivodeship, Poland	14.3
103	Baytown Texas, United States	14.3
105	Athens Attica, Greece	14.2
105	Topeka Kansas, United States	14.2
105	Valley Station Kentucky, United States	14.2
105	Sulphur Louisiana, United States	14.2
105	Pasadena Texas, United States	14.2
110	Victoria Central and Western, Hong Kong	14.1
110	Chihuahua Chihuahua, Mexico	14.1
112	Sau Mau Ping Kwun Tong District, Hong Kong	14.0
112	Włocławek Kujawsko-Pomorskie, Poland	14.0
112	Vigo Galicia, Spain	14.0
115	Radom Mazovia, Poland	13.9
115	Tin Shui Wai Yuen Long, Hong Kong	13.9
117	Thessaloníki Central Macedonia, Greece	13.8
117	Lagos low-cost sensors Lagos, Nigeria	13.8
117	Katowice Silesia, Poland	13.8
117	Corpus Christi Texas, United States	13.8
121	Starachowice Świętokrzyskie, Poland	13.6
121	Santa Cruz de Tenerife Canary Islands, Spain	13.6
121	Mission Bend Texas, United States	13.6
124	Prešov Prešov Region, Slovakia	13.5
124	Ponca City Oklahoma, United States	13.5
126	Racibórz Silesia, Poland	13.4
126	Redford Michigan, United States	13.4
128	Košice Košice Region, Slovakia	13.3
128	Algiers Algiers, Algeria	13.3
128	Granite City Illinois, United States	13.3
128	Missouri City Texas, United States	13.3
132	Tsuen Wan Tsuen Wan, Hong Kong	13.2
132	Bielsko-Biala Silesia, Poland	13.2
132	Cayenne Guyane, French Guiana	13.2
132	Fort Smith Arkansas, United States	13.2
136	Rio Claro São Paulo, Brazil	13.1
137	Asprópyrgos Attica, Greece	13.0
137	Avilés Asturias, Spain	13.0
137	Banja Luka Srpska, Bosnia and Herzegovina	13.0
137	Indianapolis Indiana, United States	13.0
141	San Isidro Canary Islands, Spain	12.9
141	Coconut Creek Florida, United States	12.9
143	Ełk Warmia-Masuria, Poland	12.8
143	Kwai Chung Kwai Tsing District, Hong Kong	12.8
145	Most Ústí nad Labem Region, Czechia	12.7
145	Toruń Kujawsko-Pomorskie, Poland	12.7
147	Pułtusk Mazovia, Poland	12.6
147	Limeira São Paulo, Brazil	12.6
147	Ferraz de Vasconcelos São Paulo, Brazil	12.6
150	Augustów Podlasie, Poland	12.5
150	São Paulo São Paulo, Brazil	12.5
150	Olathe Kansas, United States	12.5
150	Brownsville Texas, United States	12.5
154	Warsaw Mazovia, Poland	12.4
154	Opole Opole Voivodeship, Poland	12.4
156	Pruszków Mazovia, Poland	12.3
156	Arrecife Canary Islands, Spain	12.3
156	Kutno Łódź Voivodeship, Poland	12.3
156	Campinas São Paulo, Brazil	12.3
156	St. Albert Alberta, Canada	12.3
161	Żyrardów Mazovia, Poland	12.2
161	Tai Po Tai Po, Hong Kong	12.2
161	Ulu Bedok Singapore	12.2
164	Grajewo Podlasie, Poland	12.1
164	Zgierz Łódź Voivodeship, Poland	12.1
164	Kraków Lesser Poland, Poland	12.1
167	Wawer Mazovia, Poland	12.0
167	Czechowice-Dziedzice Silesia, Poland	12.0
169	Havířov Moravian-Silesian Region, Czechia	11.9
169	Lębork Pomerania, Poland	11.9
169	Santo André São Paulo, Brazil	11.9
169	Kansas City Kansas, United States	11.9
169	Port Arthur Texas, United States	11.9
169	Whitehorse Yukon, Canada	11.9
175	Bucharest Bucharest, Romania	11.8
175	La Línea de la Concepción Andalusia, Spain	11.8
175	Děčín Ústí nad Labem Region, Czechia	11.8
178	Cluj-Napoca Cluj County, Romania	11.7
178	Kazincbarcika Borsod-Abaúj-Zemplén, Hungary	11.7
178	Suwałki Podlasie, Poland	11.7
178	Nisko Subcarpathia, Poland	11.7
178	Wichita Kansas, United States	11.7
178	San Antonio Texas, United States	11.7
184	Znojmo South Moravian, Czechia	11.6
184	Pesaro The Marches, Italy	11.6
186	São José do Rio Preto São Paulo, Brazil	11.5
186	Moore Oklahoma, United States	11.5
186	East Ridge Tennessee, United States	11.5
186	St. John's Newfoundland and Labrador, Canada	11.5
190	Białystok Podlasie, Poland	11.4
190	Ribeirão Preto São Paulo, Brazil	11.4
190	Callao Callao, Peru	11.4
190	Birmingham Alabama, United States	11.4
194	Spišská Nová Ves Košice Region, Slovakia	11.3
194	Durango Basque Country, Spain	11.3
194	Conroe Texas, United States	11.3
194	Dallas Texas, United States	11.3
198	Fanling North District, Hong Kong	11.2
198	Lormont New Aquitaine, France	11.2
198	Gasteiz / Vitoria Basque Country, Spain	11.2

Top 200 of 1,365 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