SmogRank / History / week of July 31, 2023

Most polluted cities, week of July 31, 2023

1,718 cities ranked by their average PM2.5 over the 7 days. A city needs measurements on 70% of the days to be ranked.

← week of July 24, 2023week of August 7, 2023 →
#City µg/m³
1Morelia Michoacán, Mexico
53.4
2Dushanbe Dushanbe, Tajikistan
53.3
3Mexicali Baja California, Mexico
52.9
4Vernon British Columbia, Canada
47.8
5Manama Manama, Bahrain
45.0
6Jakarta Jakarta, Indonesia
44.6
7Lahore low-cost sensors Punjab, Pakistan
40.9
8Badger Alaska, United States
39.5
9Santa Anita - Los Ficus Lima region, Peru
39.2
10Fort McMurray Alberta, Canada
39.1
11Dhaka low-cost sensors Dhaka Division, Bangladesh
38.9
12Peshawar low-cost sensors Khyber Pakhtunkhwa, Pakistan
38.5
13Addis Ababa Addis Ababa, Ethiopia
33.4
14Kamloops British Columbia, Canada
33.0
15Prince Albert Saskatchewan, Canada
30.9
16São Paulo São Paulo, Brazil
30.7
17Pristina Pristina, Kosovo
29.9
18Fairbanks Alaska, United States
29.7
19Şabāḩ as Sālim Mubārak al Kabīr, Kuwait
29.4
20Chennai Tamil Nadu, India
26.8
21Delhi Delhi, India
26.5
21Lima Lima Province, Peru
26.5
23Bamako Bamako, Mali
26.2
24Hanoi Hanoi, Vietnam
26.0
25Karachi low-cost sensors Sindh, Pakistan
25.8
26Islamabad low-cost sensors Islamabad, Pakistan
25.5
27Beijing Beijing, China
24.3
28Swift Current Saskatchewan, Canada
24.2
29Victoria de Durango Durango, Mexico
23.7
30Indio California, United States
22.7
31Great Falls Montana, United States
22.4
32Guangzhou Guangdong, China
22.2
33Kolkata West Bengal, India
22.0
33Xonacatlán México, Mexico
22.0
35Kelowna British Columbia, Canada
21.3
36Canton Ohio, United States
21.1
36Calexico California, United States
21.1
38Saskatoon Saskatchewan, Canada
20.6
39Warren Ohio, United States
20.4
40San Francisco Tlalcilalcalpan México, Mexico
20.3
41Villa Poeta José Gálvez Barrenechea Lima region, Peru
20.1
42Baku Baki, Azerbaijan
20.0
42Ciudad Apodaca Nuevo León, Mexico
20.0
44Antananarivo Analamanga, Madagascar
19.9
45Szeged Csongrád, Hungary
19.8
46Sarajevo Federation of B&H, Bosnia and Herzegovina
19.5
47Cleveland Ohio, United States
19.1
47Youngstown Ohio, United States
19.1
49Holland Michigan, United States
18.8
50Regina Saskatchewan, Canada
18.7
51Penticton British Columbia, Canada
18.6
52Shenyang Liaoning, China
18.5
52Nagai Yamagata, Japan
18.5
52Toluca México, Mexico
18.5
52Cranbrook British Columbia, Canada
18.5
56Lincoln Park Michigan, United States
18.4
57Hyderabad Telangana, India
18.3
57Detroit Michigan, United States
18.3
57West Mifflin Pennsylvania, United States
18.3
60Kalamazoo Michigan, United States
18.2
60Windsor Ontario, Canada
18.2
62Dearborn Michigan, United States
18.1
63Ciudad Juárez Chihuahua, Mexico
17.7
63London Ontario, Canada
17.7
65San Salvador Tizatlalli México, Mexico
17.5
66Edmonton Alberta, Canada
17.3
67Pittsburgh Pennsylvania, United States
17.2
68Ypsilanti Michigan, United States
17.1
69Akron Ohio, United States
17.0
70Salor Tashkent Region, Uzbekistan
16.9
71San Mateo Atenco México, Mexico
16.8
71Medina Ohio, United States
16.8
71Wilkinsburg Pennsylvania, United States
16.8
74Takasaki Gunma, Japan
16.7
74Westerville Ohio, United States
16.7
74Superior Wisconsin, United States
16.7
77Taylor Michigan, United States
16.6
77Duluth Minnesota, United States
16.6
79Asprópyrgos Attica, Greece
16.5
79St. Thomas Ontario, Canada
16.5
81Los Angeles California, United States
16.4
82Steubenville Ohio, United States
16.2
83Shaker Heights Ohio, United States
16.1
84Dayton Ohio, United States
16.0
84McKeesport Pennsylvania, United States
16.0
86Middletown Ohio, United States
15.9
86Springfield Ohio, United States
15.9
88Banning California, United States
15.8
89Huelva Andalusia, Spain
15.7
89Minneapolis Minnesota, United States
15.7
89Chatham Ontario, Canada
15.7
92Sliema Tas-Sliema, Malta
15.6
92Santa Catarina Nuevo León, Mexico
15.6
92Norwood Ohio, United States
15.6
92South Bend Indiana, United States
15.6
92Brawley California, United States
15.6
92Helena Montana, United States
15.6
98West Fargo North Dakota, United States
15.4
98Erie Pennsylvania, United States
15.4
100Fontana California, United States
15.3
101Wan Chai Wan Chai, Hong Kong
15.2
101West Memphis Arkansas, United States
15.2
101Burnsville Minnesota, United States
15.2
101Thunder Bay Ontario, Canada
15.2
105Calgary Alberta, Canada
15.1
106Toledo Ohio, United States
15.0
107Mason Ohio, United States
14.9
107Jurupa Valley California, United States
14.9
107Brantford Ontario, Canada
14.9
110Elkhart Indiana, United States
14.8
111Port Huron Michigan, United States
14.7
111Kitchener Ontario, Canada
14.7
111Oakville Ontario, Canada
14.7
111Whitehorse Yukon, Canada
14.7
115Jeddah Mecca Region, Saudi Arabia
14.6
115Indianapolis Indiana, United States
14.6
115Saint Paul Minnesota, United States
14.6
115Shakopee Minnesota, United States
14.6
119Springdale Arkansas, United States
14.5
119Franklin Park Illinois, United States
14.5
119Lansing Michigan, United States
14.5
119Cheektowaga New York, United States
14.5
119Dublin Ohio, United States
14.5
124Ang Mo Kio New Town Singapore
14.4
124Ishinomaki Miyagi, Japan
14.4
124Cincinnati Ohio, United States
14.4
124Saint Cloud Minnesota, United States
14.4
124Fort St. John British Columbia, Canada
14.4
124Hamilton Ontario, Canada
14.4
130Lebanon Ohio, United States
14.3
130Bismarck North Dakota, United States
14.3
132Athens Attica, Greece
14.2
132Calumet City Illinois, United States
14.2
132Riverside California, United States
14.2
135Winston-Salem North Carolina, United States
14.1
135Gary Indiana, United States
14.1
135Hermitage Pennsylvania, United States
14.1
135Milton Ontario, Canada
14.1
135Red Deer Alberta, Canada
14.1
135Sarnia Ontario, Canada
14.1
141Acharnés Attica, Greece
14.0
141Tijuana Baja California, Mexico
14.0
141Naperville Illinois, United States
14.0
144Sagae Yamagata, Japan
13.9
144Celaya Guanajuato, Mexico
13.9
144Portage Indiana, United States
13.9
147Colombo Western Province, Sri Lanka
13.8
147Redford Michigan, United States
13.8
149Iyo Ehime, Japan
13.7
149Shreveport Louisiana, United States
13.7
149Rochester Minnesota, United States
13.7
149Saint Michael Minnesota, United States
13.7
149Waterdown Ontario, Canada
13.7
154Santa Cruz de Tenerife Canary Islands, Spain
13.6
154Guadalajara Jalisco, Mexico
13.6
154Grand Rapids Michigan, United States
13.6
154Eau Claire Wisconsin, United States
13.6
154St. Catharines Ontario, Canada
13.6
159Mosta Il-Mosta, Malta
13.5
159Ciudad Benito Juárez Nuevo León, Mexico
13.5
159Little Rock Arkansas, United States
13.5
159Joliet Illinois, United States
13.5
159Weirton Heights West Virginia, United States
13.5
159Compton California, United States
13.5
165Naucalpan de Juárez México, Mexico
13.4
165Chihuahua Chihuahua, Mexico
13.4
165Johnstown Pennsylvania, United States
13.4
165Guelph Ontario, Canada
13.4
169Ruse Ruse, Bulgaria
13.3
169Kiryū Gunma, Japan
13.3
169Salamanca Guanajuato, Mexico
13.3
169Northbrook Illinois, United States
13.3
169Altamont Oregon, United States
13.3
174Ulu Bedok Singapore
13.2
174Greensboro North Carolina, United States
13.2
174Raleigh North Carolina, United States
13.2
177Shinjō Yamagata, Japan
13.1
177Jeffersonville Indiana, United States
13.1
177Apple Valley Minnesota, United States
13.1
177Glendora California, United States
13.1
177Newmarket Ontario, Canada
13.1
182Sofia Sofia-Capital, Bulgaria
13.0
182Fort Thomas Kentucky, United States
13.0
182Texarkana Texas, United States
13.0
182Anderson Indiana, United States
13.0
182Appleton Wisconsin, United States
13.0
182Burbank California, United States
13.0
188Monterrey Nuevo León, Mexico
12.9
188Chula Vista California, United States
12.9
188Ōsaki Miyagi, Japan
12.9
191Sakata Yamagata, Japan
12.8
191Jenison Michigan, United States
12.8
193Bangkok low-cost sensors Bangkok, Thailand
12.7
193Tepeji del Río de Ocampo Hidalgo, Mexico
12.7
193Rockford Illinois, United States
12.7
193Green Bay Wisconsin, United States
12.7
197Clinton Iowa, United States
12.6
197Des Plaines Illinois, United States
12.6
197Milwaukee Wisconsin, United States
12.6
197Mississauga Ontario, Canada
12.6

Top 200 of 1,718 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