SmogRank / History / week of August 14, 2023

Most polluted cities, week of August 14, 2023

1,651 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	Kelowna British Columbia, Canada	118.5
2	Vernon British Columbia, Canada	92.1
3	Penticton British Columbia, Canada	88.4
4	Redmond Oregon, United States	84.7
5	Spokane Washington, United States	77.4
6	Spokane Valley Washington, United States	71.2
7	Bend Oregon, United States	64.6
8	Moses Lake Washington, United States	59.3
9	Dhaka low-cost sensors Dhaka Division, Bangladesh	57.5
10	Kamloops British Columbia, Canada	56.9
11	Manama Manama, Bahrain	55.7
12	Dushanbe Dushanbe, Tajikistan	55.3
13	Cranbrook British Columbia, Canada	53.6
14	Ashland Oregon, United States	51.0
15	Peshawar low-cost sensors Khyber Pakhtunkhwa, Pakistan	49.8
16	Şabāḩ as Sālim Mubārak al Kabīr, Kuwait	49.0
17	Walla Walla Washington, United States	48.1
17	Tri-Cities Washington, United States	48.1
19	Coeur d'Alene Idaho, United States	47.4
20	Kampala low-cost sensors Central Region, Uganda	47.2
21	Hermiston Oregon, United States	45.0
22	Lahore low-cost sensors Punjab, Pakistan	44.7
23	Sunnyside Washington, United States	42.1
24	Medford Oregon, United States	41.8
25	Pendleton Oregon, United States	40.4
26	Alexandria Alexandria, Egypt	39.6
27	Pasco Washington, United States	38.8
28	Kigali Kigali, Rwanda	38.2
29	The Dalles Oregon, United States	37.7
30	Islamabad low-cost sensors Islamabad, Pakistan	37.5
31	Pullman Washington, United States	37.3
32	Addis Ababa Addis Ababa, Ethiopia	37.1
32	Yakima Washington, United States	37.1
34	Kolkata West Bengal, India	36.8
35	Ellensburg Washington, United States	36.1
36	Delhi Delhi, India	35.9
37	Hanoi Hanoi, Vietnam	34.8
38	Sarajevo Federation of B&H, Bosnia and Herzegovina	33.3
39	Moscow Idaho, United States	33.0
39	Prince Albert Saskatchewan, Canada	33.0
41	Ancona The Marches, Italy	32.3
42	Lewiston Idaho, United States	31.6
43	Wenatchee Washington, United States	31.2
44	Shenyang Liaoning, China	30.1
45	Greater Sudbury Ontario, Canada	30.0
46	North Bay Ontario, Canada	29.5
47	Guangzhou Guangdong, China	28.3
48	Chennai Tamil Nadu, India	28.2
49	Pristina Pristina, Kosovo	27.8
50	Beijing Beijing, China	27.3
51	Cataño Cataño, Puerto Rico	26.4
52	N'Djamena N’Djaména, Chad	26.2
52	Grants Pass Oregon, United States	26.2
54	Baku Baki, Azerbaijan	26.1
55	Chilliwack British Columbia, Canada	25.3
56	Calgary Alberta, Canada	24.7
57	Saskatoon Saskatchewan, Canada	24.2
58	Eugene Oregon, United States	24.1
59	Hyderabad Telangana, India	24.0
60	Nairobi Nairobi County, Kenya	22.6
61	Fort McMurray Alberta, Canada	22.4
62	Jesi The Marches, Italy	22.1
63	Barrie Ontario, Canada	22.0
64	Karachi low-cost sensors Sindh, Pakistan	21.5
65	Regina Saskatchewan, Canada	21.4
66	Senica Trnava Region, Slovakia	21.3
67	Banja Luka Srpska, Bosnia and Herzegovina	20.9
68	Belgrade Central Serbia, Serbia	20.4
69	Antananarivo Analamanga, Madagascar	20.3
69	Altamont Oregon, United States	20.3
71	Prešov Prešov Region, Slovakia	20.1
72	Falconara Marittima The Marches, Italy	20.0
73	Rouyn-Noranda Quebec, Canada	19.7
74	Bratislava Bratislava Region, Slovakia	19.6
75	Vranov nad Topľou Prešov Region, Slovakia	19.5
75	Most Ústí nad Labem Region, Czechia	19.5
75	Squamish British Columbia, Canada	19.5
78	Ciudad Juárez Chihuahua, Mexico	19.3
78	Helena Montana, United States	19.3
80	Humenné Prešov Region, Slovakia	19.2
81	Ang Mo Kio New Town Singapore	19.0
81	Fort-de-France Martinique, Martinique	19.0
83	Le Robert Martinique, Martinique	18.9
83	Oakville Ontario, Canada	18.9
85	Le Lamentin Martinique, Martinique	18.8
86	Great Falls Montana, United States	18.6
87	Jeddah Mecca Region, Saudi Arabia	18.4
87	Snina Prešov Region, Slovakia	18.4
89	Algiers Algiers, Algeria	18.2
89	Kelheim Bavaria, Germany	18.2
89	Trnava Trnava Region, Slovakia	18.2
92	Auburn Washington, United States	18.1
92	Newmarket Ontario, Canada	18.1
94	Děčín Ústí nad Labem Region, Czechia	18.0
94	Edmonton Alberta, Canada	18.0
96	Vilnius Vilnius, Lithuania	17.9
97	Tha Bo Nong Khai, Thailand	17.8
97	São Paulo São Paulo, Brazil	17.8
97	Holland Michigan, United States	17.8
100	Lethbridge Alberta, Canada	17.7
101	Litvínov Ústí nad Labem Region, Czechia	17.6
101	Naples Campania, Italy	17.6
101	Milton Ontario, Canada	17.6
101	Swift Current Saskatchewan, Canada	17.6
105	Ulu Bedok Singapore	17.5
106	Kitchener Ontario, Canada	17.3
107	Košice Košice Region, Slovakia	17.2
108	Columbia City Washington, United States	17.1
109	Fujinomiya Shizuoka, Japan	17.0
109	Guelph Ontario, Canada	17.0
111	Nitra Nitra Region, Slovakia	16.8
112	Ilinden Ilinden, North Macedonia	16.7
112	Ostrava Moravian-Silesian Region, Czechia	16.7
114	Chiang Mai low-cost sensors Chiang Mai, Thailand	16.6
114	Mosta Il-Mosta, Malta	16.6
114	Kadaň Ústí nad Labem Region, Czechia	16.6
114	Brampton Ontario, Canada	16.6
114	London Ontario, Canada	16.6
119	Salor Tashkent Region, Uzbekistan	16.5
119	Sliema Tas-Sliema, Malta	16.5
121	Kalamazoo Michigan, United States	16.4
121	Brookings South Dakota, United States	16.4
123	Szeged Csongrád, Hungary	16.3
123	Shakaskraal low-cost sensors KwaZulu-Natal, South Africa	16.3
123	Győr Győr-Moson-Sopron, Hungary	16.3
123	Tigard Oregon, United States	16.3
123	Windsor Ontario, Canada	16.3
128	Ruse Ruse, Bulgaria	16.2
128	Tetovo Tetovo, North Macedonia	16.2
128	Airdrie Alberta, Canada	16.2
128	Red Deer Alberta, Canada	16.2
132	Beroun Central Bohemia, Czechia	16.1
132	Grand Rapids Michigan, United States	16.1
134	Wolfsberg Carinthia, Austria	16.0
134	Znojmo South Moravian, Czechia	16.0
134	Teplice Ústí nad Labem Region, Czechia	16.0
134	Kladno Central Bohemia, Czechia	16.0
134	Mississauga Ontario, Canada	16.0
134	Toronto Ontario, Canada	16.0
140	Graz Styria, Austria	15.9
140	Český Těšín Moravian-Silesian Region, Czechia	15.9
140	Naucalpan de Juárez México, Mexico	15.9
140	Celaya Guanajuato, Mexico	15.9
140	Renton Washington, United States	15.9
140	Waterdown Ontario, Canada	15.9
146	Żabbar Ħaż-Żabbar, Malta	15.8
146	Albany Oregon, United States	15.8
148	Birmingham Alabama, United States	15.7
148	Butte Montana, United States	15.7
148	St. Thomas Ontario, Canada	15.7
151	Spišská Nová Ves Košice Region, Slovakia	15.6
151	Modugno Apulia, Italy	15.6
151	Brantford Ontario, Canada	15.6
151	Hamilton Ontario, Canada	15.6
155	Calumet City Illinois, United States	15.5
156	Klagenfurt am Wörthersee Carinthia, Austria	15.4
157	Niš Central Serbia, Serbia	15.3
157	Takasaki Gunma, Japan	15.3
157	Collado-Villalba Madrid, Spain	15.3
157	Silao de la Victoria Guanajuato, Mexico	15.3
157	Franklin Park Illinois, United States	15.3
157	Peterborough Ontario, Canada	15.3
163	Minamata Kumamoto, Japan	15.2
163	Lagos low-cost sensors Lagos, Nigeria	15.2
163	Cleveland Ohio, United States	15.2
163	Parkland Washington, United States	15.2
163	Tacoma Washington, United States	15.2
168	Žilina Žilina Region, Slovakia	15.1
168	Havířov Moravian-Silesian Region, Czechia	15.1
168	Duluth Minnesota, United States	15.1
168	Canby Oregon, United States	15.1
172	Cluj-Napoca Cluj County, Romania	15.0
172	Olomouc Olomouc Region, Czechia	15.0
172	Novi Sad Vojvodina, Serbia	15.0
172	Middletown Ohio, United States	15.0
172	Chikusei Ibaraki, Japan	15.0
177	Kathmandu low-cost sensors Bagmati Province, Nepal	14.9
177	Nagai Yamagata, Japan	14.9
177	Martin Žilina Region, Slovakia	14.9
177	Hradec Králové Hradec Králové Region, Czechia	14.9
177	Coquitlam British Columbia, Canada	14.9
182	Přerov Olomouc Region, Czechia	14.8
182	Prague Prague, Czechia	14.8
182	Frýdek-Místek Moravian-Silesian Region, Czechia	14.8
182	Montemurlo Tuscany, Italy	14.8
182	Joliet Illinois, United States	14.8
182	Minneapolis Minnesota, United States	14.8
182	Appleton Wisconsin, United States	14.8
189	Partizánske Trenčín Region, Slovakia	14.7
189	Jenison Michigan, United States	14.7
189	Seattle Washington, United States	14.7
192	Colombo Western Province, Sri Lanka	14.6
192	Indianapolis Indiana, United States	14.6
192	Ayase Kanagawa, Japan	14.6
195	Asprópyrgos Attica, Greece	14.5
195	Saint Cloud Minnesota, United States	14.5
195	Superior Wisconsin, United States	14.5
198	Mladá Boleslav Central Bohemia, Czechia	14.4
198	Detroit Michigan, United States	14.4
198	Green Bay Wisconsin, United States	14.4

Top 200 of 1,651 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