SmogRank / History / week of December 18, 2023

Most polluted cities, week of December 18, 2023

1,791 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	Lahore low-cost sensors Punjab, Pakistan	336.3
2	Delhi Delhi, India	234.9
3	Dhaka low-cost sensors Dhaka Division, Bangladesh	186.3
4	Kolkata West Bengal, India	167.1
5	Ulan Bator Ulaanbaatar, Mongolia	159.4
6	Salor Tashkent Region, Uzbekistan	145.0
7	Peshawar low-cost sensors Khyber Pakhtunkhwa, Pakistan	135.6
8	Banja Luka Srpska, Bosnia and Herzegovina	134.8
9	Islamabad low-cost sensors Islamabad, Pakistan	130.3
10	N'Djamena N’Djaména, Chad	129.5
11	Sarajevo Federation of B&H, Bosnia and Herzegovina	127.9
12	Hyderabad Telangana, India	118.3
13	Tetovo Tetovo, North Macedonia	94.3
14	Dushanbe Dushanbe, Tajikistan	94.2
15	Abuja low-cost sensors FCT, Nigeria	93.1
16	Lagos low-cost sensors Lagos, Nigeria	92.0
17	Niš Central Serbia, Serbia	87.5
18	Mumbai Maharashtra, India	86.0
19	Karachi low-cost sensors Sindh, Pakistan	80.4
20	Kathmandu low-cost sensors Bagmati Province, Nepal	79.6
21	Skopje Grad Skopje, North Macedonia	78.4
22	Chennai Tamil Nadu, India	78.0
23	Veles Veles, North Macedonia	72.2
24	Tlaquepaque Jalisco, Mexico	69.4
25	Kavadarci Kavadarci, North Macedonia	68.4
26	Shenyang Liaoning, China	66.7
27	Capannori Tuscany, Italy	66.5
28	Bitola Bitola, North Macedonia	64.0
29	Manlleu Catalonia, Spain	60.0
30	Kampala low-cost sensors Central Region, Uganda	58.9
31	Almaty low-cost sensors Almaty, Kazakhstan	55.5
32	Montemurlo Tuscany, Italy	55.0
33	Ilinden Ilinden, North Macedonia	53.6
34	Belgrade Central Serbia, Serbia	53.2
35	Hanoi Hanoi, Vietnam	50.0
36	Ciudad Benito Juárez Nuevo León, Mexico	49.0
37	Pristina Pristina, Kosovo	47.5
38	Prato Tuscany, Italy	45.9
38	Victoria de Durango Durango, Mexico	45.9
40	Şabāḩ as Sālim Mubārak al Kabīr, Kuwait	43.2
41	Cholula Puebla, Mexico	42.0
42	San Salvador Tizatlalli México, Mexico	40.8
43	Zacatepec de Hidalgo Morelos, Mexico	40.6
44	Jakarta Jakarta, Indonesia	40.1
45	Benevento Campania, Italy	39.8
46	Haskovo low-cost sensors Haskovo, Bulgaria	39.5
47	Kochani Kochani, North Macedonia	38.2
48	Novi Sad Vojvodina, Serbia	38.1
49	Toluca México, Mexico	36.2
50	Santa Catarina Nuevo León, Mexico	35.3
51	Volos Thessaly, Greece	35.1
51	Guadalajara Jalisco, Mexico	35.1
53	Viareggio Tuscany, Italy	34.9
54	Alessandria Piedmont, Italy	34.4
55	Kigali Kigali, Rwanda	34.2
55	Sallanches Auvergne-Rhône-Alpes, France	34.2
57	Chiang Mai low-cost sensors Chiang Mai, Thailand	34.0
58	Botevgrad low-cost sensors Sofia, Bulgaria	33.9
58	Zapopan Jalisco, Mexico	33.9
60	Thessaloníki Central Macedonia, Greece	33.2
61	Arezzo Tuscany, Italy	32.8
62	Turin Piedmont, Italy	32.4
62	Florence Tuscany, Italy	32.4
64	Pisa Tuscany, Italy	31.3
65	Saltillo Coahuila, Mexico	31.2
66	Ourense Galicia, Spain	30.7
67	San Martin Texmelucan de Labastida Puebla, Mexico	30.5
68	Tuen Mun Tuen Mun, Hong Kong	30.4
69	Bailén Andalusia, Spain	29.8
69	Mexicali Baja California, Mexico	29.8
71	Beijing Beijing, China	29.4
72	Naples Campania, Italy	29.2
73	Dej Cluj County, Romania	28.8
74	Graz Styria, Austria	28.7
75	Humenné Prešov Region, Slovakia	28.5
76	Pátra West Greece, Greece	28.4
77	Wan Chai Wan Chai, Hong Kong	28.3
78	Veracruz Veracruz, Mexico	27.8
79	Mollet del Vallès Catalonia, Spain	27.6
80	Monterrey Nuevo León, Mexico	27.4
81	Yangon Yangon, Myanmar	27.2
81	Bangkok low-cost sensors Bangkok, Thailand	27.2
83	Valdemoro Madrid, Spain	26.9
83	Lleida Catalonia, Spain	26.9
85	Iaşi Iași County, Romania	26.5
85	Puebla Puebla, Mexico	26.5
87	Ciudad Apodaca Nuevo León, Mexico	26.4
88	Ciudad General Escobedo Nuevo León, Mexico	26.3
89	Cluj-Napoca Cluj County, Romania	26.0
89	Amora Setúbal, Portugal	26.0
91	Sevilla Andalusia, Spain	25.4
92	Athens Attica, Greece	25.2
92	Colombo Western Province, Sri Lanka	25.2
94	Craiova Dolj, Romania	25.0
94	Guangzhou Guangdong, China	25.0
96	Tin Shui Wai Yuen Long, Hong Kong	24.7
97	Addis Ababa Addis Ababa, Ethiopia	24.4
98	Paredes Porto, Portugal	24.3
98	Jesi The Marches, Italy	24.3
98	Celaya Guanajuato, Mexico	24.3
101	Girona Catalonia, Spain	24.1
101	Mixquiahuala de Juárez Hidalgo, Mexico	24.1
101	Morelia Michoacán, Mexico	24.1
104	Baku Baki, Azerbaijan	24.0
105	Givors Auvergne-Rhône-Alpes, France	23.8
106	Chihuahua Chihuahua, Mexico	23.3
107	Ružomberok Žilina Region, Slovakia	23.1
107	Cuernavaca Morelos, Mexico	23.1
109	Massa Tuscany, Italy	22.9
110	Cadereyta Jiménez Nuevo León, Mexico	22.7
111	Spišská Nová Ves Košice Region, Slovakia	22.5
112	Tai Po Tai Po, Hong Kong	22.3
113	Kennesaw Georgia, United States	22.2
114	Ancona The Marches, Italy	22.1
115	Murcia Murcia, Spain	21.9
116	Tijuana Baja California, Mexico	21.8
117	Caserta Campania, Italy	21.6
118	Bishkek low-cost sensors Bishkek, Kyrgyzstan	21.3
118	Jardines de la Silla Nuevo León, Mexico	21.3
120	Poggibonsi Tuscany, Italy	21.2
121	East Ridge Tennessee, United States	21.0
122	Falconara Marittima The Marches, Italy	20.8
123	Monaco Municipality of Monaco, Monaco	20.7
124	Mong Kok Yau Tsim Mong District, Hong Kong	20.4
124	Wolfsberg Carinthia, Austria	20.4
124	Ceglie Messapica Apulia, Italy	20.4
124	Silao de la Victoria Guanajuato, Mexico	20.4
124	Ciudad Juárez Chihuahua, Mexico	20.4
129	Gabrovo low-cost sensors Gabrovo, Bulgaria	20.3
130	Nyíregyháza Szabolcs-Szatmár-Bereg, Hungary	20.1
131	Vigo Galicia, Spain	20.0
132	Győr Győr-Moson-Sopron, Hungary	19.9
133	Victoria Central and Western, Hong Kong	19.8
133	Lyon Auvergne-Rhône-Alpes, France	19.8
135	Algiers Algiers, Algeria	19.5
135	Prievidza Trenčín Region, Slovakia	19.5
137	Ruse Ruse, Bulgaria	19.3
137	Sha Tin Sha Tin, Hong Kong	19.3
139	Tsuen Wan Tsuen Wan, Hong Kong	19.2
139	Tehuacán Puebla, Mexico	19.2
139	Fresno California, United States	19.2
142	Pécs Baranya, Hungary	19.0
142	Irapuato Guanajuato, Mexico	19.0
144	Córdoba Andalusia, Spain	18.9
144	Coslada Madrid, Spain	18.9
146	Millcreek Utah, United States	18.6
147	Sau Mau Ping Kwun Tong District, Hong Kong	18.5
147	León de los Aldama Guanajuato, Mexico	18.5
149	Kwai Chung Kwai Tsing District, Hong Kong	18.4
149	Hanford California, United States	18.4
151	Bakersfield California, United States	18.3
152	Banská Bystrica Banská Bystrica Region, Slovakia	18.1
152	Lugo Galicia, Spain	18.1
152	Borgomanero Piedmont, Italy	18.1
155	Tula de Allende Hidalgo, Mexico	18.0
156	León Castille and León, Spain	17.9
157	Trento Trentino-Alto Adige, Italy	17.8
157	Grand Rapids Michigan, United States	17.8
159	Sham Shui Po Sham Shui Po District, Hong Kong	17.7
159	Tepeji del Río de Ocampo Hidalgo, Mexico	17.7
161	Salerno Campania, Italy	17.6
161	La Spezia Liguria, Italy	17.6
163	Romans-sur-Isère Auvergne-Rhône-Alpes, France	17.4
164	Miskolc Borsod-Abaúj-Zemplén, Hungary	17.3
164	Esztergom Komárom-Esztergom, Hungary	17.3
166	Fanling North District, Hong Kong	17.2
167	Cayenne Guyane, French Guiana	17.0
168	Meyzieu Auvergne-Rhône-Alpes, France	16.9
169	Aberdeen Southern District, Hong Kong	16.8
169	Sama Asturias, Spain	16.8
171	Bucharest Bucharest, Romania	16.7
171	Sulphur Louisiana, United States	16.7
173	Chattanooga Tennessee, United States	16.6
174	Bogotá Bogota D.C., Colombia	16.5
174	Salamanca Guanajuato, Mexico	16.5
176	San Tung Chung Hang Islands, Hong Kong	16.4
176	Partizánske Trenčín Region, Slovakia	16.4
176	Handlová Trenčín Region, Slovakia	16.4
176	Visalia California, United States	16.4
176	Salt Lake City Utah, United States	16.4
181	Asprópyrgos Attica, Greece	16.3
181	Meylan Auvergne-Rhône-Alpes, France	16.3
183	Granada Andalusia, Spain	16.2
183	Abasolo Guanajuato, Mexico	16.2
185	Collado-Villalba Madrid, Spain	16.1
186	Kazincbarcika Borsod-Abaúj-Zemplén, Hungary	16.0
186	Lisbon Lisbon, Portugal	16.0
186	Valladolid Castille and León, Spain	16.0
189	Livorno Tuscany, Italy	15.9
190	Huelva Andalusia, Spain	15.8
190	San Andrés Tuxtla Veracruz, Mexico	15.8
190	Santiago de Querétaro Querétaro, Mexico	15.8
193	Vranov nad Topľou Prešov Region, Slovakia	15.7
193	Mladá Boleslav Central Bohemia, Czechia	15.7
193	West Jordan Utah, United States	15.7
196	Prešov Prešov Region, Slovakia	15.6
196	Rovereto Trentino-Alto Adige, Italy	15.6
196	Bolzano Trentino-Alto Adige, Italy	15.6
199	Gardanne Provence-Alpes-Côte d'Azur, France	15.5
199	Přerov Olomouc Region, Czechia	15.5

Top 200 of 1,791 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