SmogRank / History / week of September 18, 2023

Most polluted cities, week of September 18, 2023

1,825 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	Tha Bo Nong Khai, Thailand	123.8
2	Lahore low-cost sensors Punjab, Pakistan	51.9
3	Kampala low-cost sensors Central Region, Uganda	49.6
4	Peshawar low-cost sensors Khyber Pakhtunkhwa, Pakistan	45.3
5	Jakarta Jakarta, Indonesia	42.5
6	Fort McMurray Alberta, Canada	42.1
7	Mexicali Baja California, Mexico	36.4
8	Addis Ababa Addis Ababa, Ethiopia	34.3
9	Delhi Delhi, India	33.4
10	Regina Saskatchewan, Canada	33.0
11	Dhaka low-cost sensors Dhaka Division, Bangladesh	32.9
12	Pristina Pristina, Kosovo	32.6
13	Şabāḩ as Sālim Mubārak al Kabīr, Kuwait	31.8
13	Santa Anita - Los Ficus Lima region, Peru	31.8
15	Lima Lima Province, Peru	30.1
16	Pleasanton California, United States	28.1
17	Saskatoon Saskatchewan, Canada	27.5
18	Guangzhou Guangdong, China	26.9
18	Richmond California, United States	26.9
18	Prince Albert Saskatchewan, Canada	26.9
21	Xonacatlán México, Mexico	26.8
22	Salinas California, United States	26.7
23	Quezon City low-cost sensors National Capital Region, Philippines	26.4
24	San Francisco Tlalcilalcalpan México, Mexico	26.3
24	Grande Prairie Alberta, Canada	26.3
26	San Jose California, United States	25.9
27	Oakland California, United States	25.7
28	Hanoi Hanoi, Vietnam	25.3
29	Sarajevo Federation of B&H, Bosnia and Herzegovina	25.1
29	Toluca México, Mexico	25.1
29	Redwood City California, United States	25.1
32	Tlaquepaque Jalisco, Mexico	25.0
32	Birmingham Alabama, United States	25.0
34	San Francisco California, United States	24.7
35	Bamako Bamako, Mali	24.6
36	Little Rock Arkansas, United States	24.3
37	Richards Bay low-cost sensors KwaZulu-Natal, South Africa	24.2
37	Villa Poeta José Gálvez Barrenechea Lima region, Peru	24.2
39	Ashgabat Ashgabat, Turkmenistan	24.0
39	Lompoc California, United States	24.0
41	Asprópyrgos Attica, Greece	23.7
42	San Leandro California, United States	23.4
43	Nairobi Nairobi County, Kenya	23.2
43	Athens Attica, Greece	23.2
45	Edmonton Alberta, Canada	23.0
46	Santa Rosa California, United States	22.9
47	Arroyo Grande California, United States	22.7
48	Livermore California, United States	22.5
49	Manteca California, United States	22.1
49	Stockton California, United States	22.1
51	Baku Baki, Azerbaijan	22.0
51	Nipomo California, United States	22.0
51	Medford Oregon, United States	22.0
54	San Rafael California, United States	21.9
55	Turlock California, United States	21.8
56	Modesto California, United States	21.5
57	Hollister California, United States	21.4
58	Ciudad Juárez Chihuahua, Mexico	21.2
58	Madera California, United States	21.2
60	San Luis Obispo California, United States	21.1
60	Santa Cruz California, United States	21.1
62	Concord California, United States	20.9
63	Hanford California, United States	20.8
64	Ashland Oregon, United States	20.7
65	Woodland California, United States	20.6
66	Islamabad low-cost sensors Islamabad, Pakistan	20.4
67	Fresno California, United States	20.3
67	Galt California, United States	20.3
67	Gilroy California, United States	20.3
70	São Paulo São Paulo, Brazil	20.0
71	Ciudad Apodaca Nuevo León, Mexico	19.8
72	Shakaskraal low-cost sensors KwaZulu-Natal, South Africa	19.7
72	Guadalajara Jalisco, Mexico	19.7
72	Ukiah California, United States	19.7
72	Bismarck North Dakota, United States	19.7
76	Davis California, United States	19.6
76	Prince George British Columbia, Canada	19.6
78	Antananarivo Analamanga, Madagascar	19.5
78	Sacramento California, United States	19.5
80	Wan Chai Wan Chai, Hong Kong	19.3
80	Lincoln California, United States	19.3
82	Compton California, United States	19.2
82	Folsom California, United States	19.2
82	Roseville California, United States	19.2
85	Tijuana Baja California, Mexico	19.1
86	Visalia California, United States	18.9
87	Naples Campania, Italy	18.8
87	Fontana California, United States	18.8
87	Bend Oregon, United States	18.8
87	San Francisco De Borja Lima region, Peru	18.8
91	Zapopan Jalisco, Mexico	18.7
91	Clovis California, United States	18.7
91	Yuba City California, United States	18.7
91	Redmond Oregon, United States	18.7
95	Salamanca Guanajuato, Mexico	18.6
96	Merced California, United States	18.5
97	Shenyang Liaoning, China	18.4
97	Nagai Yamagata, Japan	18.4
97	Corcoran California, United States	18.4
97	Porterville California, United States	18.4
101	Astana Astana, Kazakhstan	18.3
101	Morelia Michoacán, Mexico	18.3
103	Bakersfield California, United States	18.1
103	Roseburg Oregon, United States	18.1
105	Acharnés Attica, Greece	18.0
105	Carson low-cost sensors California, United States	18.0
105	Orcutt California, United States	18.0
105	Torrance low-cost sensors California, United States	18.0
109	Piraeus Attica, Greece	17.8
109	Ciudad Nezahualcoyotl México, Mexico	17.8
111	Salor Tashkent Region, Uzbekistan	17.7
111	N'Djamena N’Djaména, Chad	17.7
111	Anaheim California, United States	17.7
111	Santa Barbara California, United States	17.7
115	Lagos low-cost sensors Lagos, Nigeria	17.6
115	Arden-Arcade California, United States	17.6
117	Bangkok low-cost sensors Bangkok, Thailand	17.5
117	Long Beach California, United States	17.5
119	Beijing Beijing, China	17.4
119	Cuernavaca Morelos, Mexico	17.4
119	Hawthorne low-cost sensors California, United States	17.4
122	Hyderabad Telangana, India	17.3
123	Atascadero California, United States	17.2
124	Los Angeles California, United States	17.1
125	Kolkata West Bengal, India	17.0
126	Puebla Puebla, Mexico	16.9
127	Khalándrion Attica, Greece	16.8
127	Inglewood low-cost sensors California, United States	16.8
129	Ancona The Marches, Italy	16.7
129	Hernando Mississippi, United States	16.7
131	Sliema Tas-Sliema, Malta	16.6
131	Grants Pass Oregon, United States	16.6
133	Duque de Caxias Rio de Janeiro, Brazil	16.4
133	Vacaville California, United States	16.4
135	East Saint Louis Illinois, United States	16.3
135	Agoura low-cost sensors California, United States	16.3
135	Santa Monica low-cost sensors California, United States	16.3
138	Jurupa Valley California, United States	16.2
139	Lomita low-cost sensors California, United States	16.1
140	West Fargo North Dakota, United States	16.0
140	La Crescenta-Montrose low-cost sensors California, United States	16.0
142	Riverside California, United States	15.9
143	Naucalpan de Juárez México, Mexico	15.7
143	Bartlett Tennessee, United States	15.7
143	Oceanside California, United States	15.7
146	Thousand Oaks California, United States	15.6
146	Red Deer Alberta, Canada	15.6
148	Tarnów Lesser Poland, Poland	15.5
149	Abuja low-cost sensors FCT, Nigeria	15.1
149	Benevento Campania, Italy	15.1
151	Niihama Ehime, Japan	15.0
151	Minamata Kumamoto, Japan	15.0
153	Esztergom Komárom-Esztergom, Hungary	14.9
153	Iowa City Iowa, United States	14.9
155	Ciudad Benito Juárez Nuevo León, Mexico	14.8
155	Hueytown Alabama, United States	14.8
155	Burbank California, United States	14.8
158	West Memphis Arkansas, United States	14.7
158	Shreveport Louisiana, United States	14.7
158	Altamont Oregon, United States	14.7
161	Davenport Iowa, United States	14.6
162	Falconara Marittima The Marches, Italy	14.4
162	San Diego California, United States	14.4
164	Żabbar Ħaż-Żabbar, Malta	14.3
164	Saltillo Coahuila, Mexico	14.3
166	Thessaloníki Central Macedonia, Greece	14.2
167	Kathmandu low-cost sensors Bagmati Province, Nepal	14.1
167	Ang Mo Kio New Town Singapore	14.1
167	Calexico California, United States	14.1
167	Santa Clarita California, United States	14.1
167	Simi Valley California, United States	14.1
172	Jeddah Mecca Region, Saudi Arabia	14.0
172	Niš Central Serbia, Serbia	14.0
172	Alessandria Piedmont, Italy	14.0
172	Celaya Guanajuato, Mexico	14.0
172	Clinton Iowa, United States	14.0
172	Muscatine Iowa, United States	14.0
178	Ruse Ruse, Bulgaria	13.9
178	Honmachi Kumamoto, Japan	13.9
178	Hattiesburg Mississippi, United States	13.9
178	Poway California, United States	13.9
178	Jardines de la Silla Nuevo León, Mexico	13.9
183	Ulu Bedok Singapore	13.8
183	Trussville Alabama, United States	13.8
185	Miskolc Borsod-Abaúj-Zemplén, Hungary	13.7
185	Glendora California, United States	13.7
187	Mosta Il-Mosta, Malta	13.6
187	Mexico City Mexico City, Mexico	13.6
187	Swift Current Saskatchewan, Canada	13.6
190	Dębica Subcarpathia, Poland	13.5
190	Kasaoka Okayama, Japan	13.5
190	Kraków Lesser Poland, Poland	13.5
190	Salerno Campania, Italy	13.5
190	Columbus Georgia, United States	13.5
190	Granite City Illinois, United States	13.5
190	Texarkana Texas, United States	13.5
190	El Cajon California, United States	13.5
198	Springfield Illinois, United States	13.4
198	Moline Illinois, United States	13.4
200	Iyo Ehime, Japan	13.3

Top 200 of 1,825 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