SmogRank / History / May 2023

Most polluted cities, May 2023

1,267 cities ranked by their average PM2.5 over the 31 days. A city needs measurements on 70% of the days to be ranked.

← April 2023June 2023 →
#City µg/m³
1Grande Prairie Alberta, Canada
85.3
2Lahore low-cost sensors Punjab, Pakistan
72.8
3Dhaka low-cost sensors Dhaka Division, Bangladesh
70.6
4Delhi Delhi, India
58.3
5Baghdad Baghdad, Iraq
56.0
6Fort St. John British Columbia, Canada
49.5
7Ceglie Messapica Apulia, Italy
48.6
8Hyderabad Telangana, India
46.6
9Fort McMurray Alberta, Canada
46.4
10Peshawar low-cost sensors Khyber Pakhtunkhwa, Pakistan
44.8
11Jakarta Jakarta, Indonesia
44.1
12Beijing Beijing, China
42.3
13Edmonton Alberta, Canada
41.8
14Dushanbe Dushanbe, Tajikistan
41.1
15Celaya Guanajuato, Mexico
37.9
16Kathmandu low-cost sensors Bagmati Province, Nepal
37.1
17Hanoi Hanoi, Vietnam
36.1
18Kolkata West Bengal, India
35.3
19Kigali Kigali, Rwanda
33.9
20Guatemala City Guatemala, Guatemala
33.4
21Şabāḩ as Sālim Mubārak al Kabīr, Kuwait
33.3
22Chennai Tamil Nadu, India
33.2
23Rabinal Baja Verapaz, Guatemala
33.1
23Red Deer Alberta, Canada
33.1
25Prince Albert Saskatchewan, Canada
32.2
26St. Albert Alberta, Canada
31.4
27Guangzhou Guangdong, China
31.0
28Tha Bo Nong Khai, Thailand
30.2
29Salamanca Guanajuato, Mexico
30.0
30Addis Ababa Addis Ababa, Ethiopia
29.7
31Airdrie Alberta, Canada
27.9
32Islamabad low-cost sensors Islamabad, Pakistan
27.2
33León de los Aldama Guanajuato, Mexico
26.5
34Saskatoon Saskatchewan, Canada
25.4
35Antananarivo Analamanga, Madagascar
25.2
35Silao de la Victoria Guanajuato, Mexico
25.2
37Sherwood Park Alberta, Canada
25.1
38Calgary Alberta, Canada
24.6
39Pristina Pristina, Kosovo
24.2
40Astana Astana, Kazakhstan
24.0
41Swift Current Saskatchewan, Canada
23.6
42Belmopan Cayo District, Belize
23.3
43Mexico City Mexico City, Mexico
23.2
44Abasolo Guanajuato, Mexico
23.0
45Irapuato Guanajuato, Mexico
22.8
45Guanajuato Guanajuato, Mexico
22.8
47Karachi low-cost sensors Sindh, Pakistan
20.6
48Yangon Yangon, Myanmar
20.5
49Salor Tashkent Region, Uzbekistan
20.2
50Baku Baki, Azerbaijan
19.4
50Benevento Campania, Italy
19.4
50Ciudad Juárez Chihuahua, Mexico
19.4
53Prince George British Columbia, Canada
19.0
54San Miguel de Allende Guanajuato, Mexico
18.7
54Texarkana Texas, United States
18.7
56San Luis de la Paz Guanajuato, Mexico
18.3
57Jeddah Mecca Region, Saudi Arabia
17.6
57Bismarck North Dakota, United States
17.6
59Regina Saskatchewan, Canada
17.4
60Mumbai Maharashtra, India
16.1
61Athens Attica, Greece
16.0
61Hobbs New Mexico, United States
16.0
63West Fargo North Dakota, United States
15.9
64Havířov Moravian-Silesian Region, Czechia
15.7
64Pesaro The Marches, Italy
15.7
66Conakry Conakry, Guinea
15.4
67Acharnés Attica, Greece
15.2
68Ruse Ruse, Bulgaria
15.1
69Colombo Western Province, Sri Lanka
15.0
69Český Těšín Moravian-Silesian Region, Czechia
15.0
69Springdale Arkansas, United States
15.0
72Hernando Mississippi, United States
14.7
72Baytown Texas, United States
14.7
74Krefeld North Rhine-Westphalia, Germany
14.6
74Béthune Hauts-de-France, France
14.6
74Frýdek-Místek Moravian-Silesian Region, Czechia
14.6
74Houston Texas, United States
14.6
74Longmont Colorado, United States
14.6
79Izegem Flanders, Belgium
14.4
80Great Falls Montana, United States
14.2
80Lethbridge Alberta, Canada
14.2
82Lagos low-cost sensors Lagos, Nigeria
14.1
82Evergem Flanders, Belgium
14.1
82Moore Oklahoma, United States
14.1
85Prešov Prešov Region, Slovakia
14.0
85Niš Central Serbia, Serbia
14.0
85Waregem Flanders, Belgium
14.0
85Kortrijk Flanders, Belgium
14.0
85Ostrava Moravian-Silesian Region, Czechia
14.0
85Děčín Ústí nad Labem Region, Czechia
14.0
91Sulphur Louisiana, United States
13.9
91Pasadena Texas, United States
13.9
93Paradise California, United States
13.8
94Menen Flanders, Belgium
13.7
94Indio California, United States
13.7
94Rapid City South Dakota, United States
13.7
94Medicine Hat Alberta, Canada
13.7
98Jackson Mississippi, United States
13.6
98Conroe Texas, United States
13.6
98Missouri City Texas, United States
13.6
101Roeselare Flanders, Belgium
13.5
101Bohumín Moravian-Silesian Region, Czechia
13.5
101Edmond Oklahoma, United States
13.5
101Fort Worth Texas, United States
13.5
101Mission Bend Texas, United States
13.5
101Burnsville Minnesota, United States
13.5
107Asprópyrgos Attica, Greece
13.4
107Sliema Tas-Sliema, Malta
13.4
107Banja Luka Srpska, Bosnia and Herzegovina
13.4
107Port Arthur Texas, United States
13.4
107Thornton Colorado, United States
13.4
107Helena Montana, United States
13.4
113Belgrade Central Serbia, Serbia
13.3
113Oklahoma City Oklahoma, United States
13.3
113Saginaw Texas, United States
13.3
116Trnava Trnava Region, Slovakia
13.2
116Birmingham Alabama, United States
13.2
116Austin Texas, United States
13.2
119Opava Moravian-Silesian Region, Czechia
13.1
119Novi Sad Vojvodina, Serbia
13.1
119Watertown South Dakota, United States
13.1
119Denver Colorado, United States
13.1
123Antwerp Flanders, Belgium
13.0
123Kladno Central Bohemia, Czechia
13.0
123St. Louis Missouri, United States
13.0
126Roubaix Hauts-de-France, France
12.9
126Beroun Central Bohemia, Czechia
12.9
126Little Rock Arkansas, United States
12.9
129Maldegem Flanders, Belgium
12.8
129Lille Hauts-de-France, France
12.8
129Corsicana Texas, United States
12.8
129Kamloops British Columbia, Canada
12.8
133Modugno Apulia, Italy
12.7
133Derby Kansas, United States
12.7
133La Porte Texas, United States
12.7
133Laredo Texas, United States
12.7
137Humenné Prešov Region, Slovakia
12.6
137Grays England, United Kingdom
12.6
137Dieppe Normandy, France
12.6
137Senica Trnava Region, Slovakia
12.6
137Brawley California, United States
12.6
142Spišská Nová Ves Košice Region, Slovakia
12.5
142Thionville Grand Est, France
12.5
142Shreveport Louisiana, United States
12.5
142Hattiesburg Mississippi, United States
12.5
146Duisburg North Rhine-Westphalia, Germany
12.4
146Třinec Moravian-Silesian Region, Czechia
12.4
146Edinburg Texas, United States
12.4
149La Línea de la Concepción Andalusia, Spain
12.3
149Zwijndrecht Flanders, Belgium
12.3
149Koksijde Flanders, Belgium
12.3
149Grimbergen Flanders, Belgium
12.3
149Beveren Flanders, Belgium
12.3
149Dunkirk Hauts-de-France, France
12.3
149Baton Rouge Louisiana, United States
12.3
156Košice Košice Region, Slovakia
12.2
156Graz Styria, Austria
12.2
156Kadaň Ústí nad Labem Region, Czechia
12.2
156Bogotá Bogota D.C., Colombia
12.2
156Hueytown Alabama, United States
12.2
156San Antonio Texas, United States
12.2
156Redford Michigan, United States
12.2
163Datteln North Rhine-Westphalia, Germany
12.1
163Valašské Meziříčí Zlín, Czechia
12.1
163Durango Basque Country, Spain
12.1
163Alessandria Piedmont, Italy
12.1
163Waterloo Iowa, United States
12.1
168Most Ústí nad Labem Region, Czechia
12.0
168Bensalem Pennsylvania, United States
12.0
168West Mifflin Pennsylvania, United States
12.0
171Ulu Bedok Singapore
11.9
171Kapellen Flanders, Belgium
11.9
171Přerov Olomouc Region, Czechia
11.9
171West Memphis Arkansas, United States
11.9
171Elizabeth New Jersey, United States
11.9
171Ken Caryl Colorado, United States
11.9
177Willebroek Flanders, Belgium
11.8
177Gent Flanders, Belgium
11.8
177Sainte-Geneviève-des-Bois Île-de-France, France
11.8
177Beauvais Hauts-de-France, France
11.8
177Olomouc Olomouc Region, Czechia
11.8
177Denton Texas, United States
11.8
177Live Oak Texas, United States
11.8
177Cheyenne Wyoming, United States
11.8
185Almaty low-cost sensors Almaty, Kazakhstan
11.7
185Aarschot Flanders, Belgium
11.7
185Jesi The Marches, Italy
11.7
185Tijuana Baja California, Mexico
11.7
185Tulsa Oklahoma, United States
11.7
185East Ridge Tennessee, United States
11.7
185Richmond California, United States
11.7
185Sheridan Wyoming, United States
11.7
185Hamilton Ontario, Canada
11.7
185La Crescenta-Montrose low-cost sensors California, United States
11.7
195Las Palmas de Gran Canaria Canary Islands, Spain
11.6
195Douai Hauts-de-France, France
11.6
195Liberec Liberec Region, Czechia
11.6
195Kansas City Kansas, United States
11.6
195Shakopee Minnesota, United States
11.6
200Jülich North Rhine-Westphalia, Germany
11.5

Top 200 of 1,267 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