SmogRank / History / week of April 7, 2025

Most polluted cities, week of April 7, 2025

2,003 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	Santa Anita Jalisco, Mexico	503.6
2	Delhi Delhi, India	70.8
3	Vientiane low-cost sensors Vientiane Prefecture, Laos	45.0
4	Chiang Mai low-cost sensors Chiang Mai, Thailand	38.4
5	Wan Chai Wan Chai, Hong Kong	37.5
6	Victoria de Durango Durango, Mexico	35.4
7	Hacienda Santa Fe Jalisco, Mexico	33.0
8	Dubai low-cost sensors Dubai, United Arab Emirates	31.9
9	Valjevo Central Serbia, Serbia	31.7
10	Tlaquepaque Jalisco, Mexico	31.5
11	Novi Pazar Central Serbia, Serbia	31.2
12	Jincheng Fukien, Taiwan	31.1
13	Sai Mai low-cost sensors Bangkok, Thailand	29.5
14	Tuen Mun Tuen Mun, Hong Kong	29.4
15	Niš Central Serbia, Serbia	28.5
16	Mong Kok Yau Tsim Mong District, Hong Kong	27.9
17	Fanling North District, Hong Kong	27.1
18	Cuernavaca Morelos, Mexico	26.9
19	Neili Taiwan, Taiwan	26.7
20	Aguascalientes Aguascalientes, Mexico	26.4
21	Erlun Taiwan, Taiwan	26.3
21	Banja Luka Srpska, Bosnia and Herzegovina	26.3
23	Vereeniging low-cost sensors Gauteng, South Africa	26.0
24	Chennai Tamil Nadu, India	25.8
25	Bang Pakong low-cost sensors Chachoengsao, Thailand	25.7
26	Tai Po Tai Po, Hong Kong	25.5
27	San Tung Chung Hang Islands, Hong Kong	25.4
28	Bangkok low-cost sensors Bangkok, Thailand	25.2
29	Tin Shui Wai Yuen Long, Hong Kong	25.1
29	Taoyuan Taiwan, Taiwan	25.1
31	Yuanlin Taiwan, Taiwan	24.9
32	Buzi Taiwan, Taiwan	24.5
33	Kwai Chung Kwai Tsing District, Hong Kong	24.3
34	Hsinchu Taiwan, Taiwan	24.2
34	Zhubei Taiwan, Taiwan	24.2
36	Douliu Taiwan, Taiwan	24.1
37	Erlin Taiwan, Taiwan	24.0
38	Victoria Central and Western, Hong Kong	23.8
39	Taichung Taiwan, Taiwan	23.4
39	Beigang Taiwan, Taiwan	23.4
39	Tsuen Wan Tsuen Wan, Hong Kong	23.4
39	Changhua Taiwan, Taiwan	23.4
39	Užice Central Serbia, Serbia	23.4
44	Toufen Taiwan, Taiwan	23.3
45	Taibao Taiwan, Taiwan	23.1
45	Sau Mau Ping Kwun Tong District, Hong Kong	23.1
47	Sham Shui Po Sham Shui Po District, Hong Kong	23.0
48	Obrenovac Central Serbia, Serbia	22.9
48	Zacatepec de Hidalgo Morelos, Mexico	22.9
48	Cholula Puebla, Mexico	22.9
48	Guadalajara Jalisco, Mexico	22.9
52	Istanbul low-cost sensors Istanbul, Turkey	22.8
53	Daxi Taiwan, Taiwan	22.7
54	Aberdeen Southern District, Hong Kong	22.5
55	Xinying Taiwan, Taiwan	22.4
55	Tainan Taiwan, Taiwan	22.4
57	Yongkang Taiwan, Taiwan	22.0
57	Cuautla Morelos, Mexico	22.0
59	Taipei Taiwan, Taiwan	21.9
59	Birmingham low-cost sensors England, United Kingdom	21.9
61	Sha Tin Sha Tin, Hong Kong	21.8
61	New Taipei City Taipei, Taiwan	21.8
63	Nantou Taiwan, Taiwan	21.7
64	Miaoli Taiwan, Taiwan	21.5
65	Debrecen low-cost sensors Hajdú-Bihar, Hungary	21.4
65	Valencia Valencia, Spain	21.4
67	Addis Ababa Addis Ababa, Ethiopia	21.3
67	Chiayi City Taiwan, Taiwan	21.3
67	Medina Estates low-cost sensors Greater Accra, Ghana	21.3
70	Xizhou Taiwan, Taiwan	21.2
71	Zhushan Taiwan, Taiwan	21.1
72	Dushanbe Dushanbe, Tajikistan	20.9
73	Zhudong Taiwan, Taiwan	20.8
73	Puebla Puebla, Mexico	20.8
73	Ciudad Nezahualcoyotl México, Mexico	20.8
76	Shulin Taipei, Taiwan	20.7
77	Żywiec Silesia, Poland	20.3
78	Požarevac Central Serbia, Serbia	20.2
79	Kikinda Vojvodina, Serbia	20.1
79	Accra low-cost sensors Greater Accra, Ghana	20.1
81	Zagreb low-cost sensors Zagreb, Croatia	19.7
81	Ciudad Juárez Chihuahua, Mexico	19.7
83	Xizhi Taipei, Taiwan	19.6
84	Tehuacán Puebla, Mexico	19.5
85	Jastrzębie Zdrój Silesia, Poland	19.4
86	Magong Taiwan, Taiwan	19.2
87	Tepeji del Río de Ocampo Hidalgo, Mexico	19.1
88	Kaohsiung Takao, Taiwan	19.0
89	Puli Taiwan, Taiwan	18.8
89	Tamano Okayama, Japan	18.8
89	Bielsko-Biala Silesia, Poland	18.8
92	Tepic Nayarit, Mexico	18.7
92	Shikokuchūō Ehime, Japan	18.7
94	Naucalpan de Juárez México, Mexico	18.6
94	San Luis de la Paz Guanajuato, Mexico	18.6
96	Fengshan Takao, Taiwan	18.5
96	Onoda Yamaguchi, Japan	18.5
96	Kurashiki Okayama, Japan	18.5
96	Tijuana Baja California, Mexico	18.5
100	Mexico City Mexico City, Mexico	18.4
101	Mollet del Vallès Catalonia, Spain	18.3
102	Ourense Galicia, Spain	18.2
103	Łask Łódź Voivodeship, Poland	17.8
104	Imabari Ehime, Japan	17.7
105	Nichelino Piedmont, Italy	17.5
106	Tamana Kumamoto, Japan	17.4
107	Iloilo low-cost sensors Western Visayas, Philippines	17.3
107	Zapopan Jalisco, Mexico	17.3
107	Monterrey Nuevo León, Mexico	17.3
110	Arida Wakayama, Japan	17.2
111	Menen Flanders, Belgium	17.1
111	Oria Basque Country, Spain	17.1
113	Mixquiahuala de Juárez Hidalgo, Mexico	17.0
114	Kariya Hyōgo, Japan	16.9
114	Asakuchi Okayama, Japan	16.9
116	Keelung Taiwan, Taiwan	16.8
116	Anan Tokushima, Japan	16.8
116	Saijō Ehime, Japan	16.8
116	Roeselare Flanders, Belgium	16.8
116	Irapuato Guanajuato, Mexico	16.8
121	Trento Trentino-Alto Adige, Italy	16.6
122	Takamatsu Kagawa, Japan	16.5
122	Shido Kagawa, Japan	16.5
122	Ciudad Benito Juárez Nuevo León, Mexico	16.5
125	Lochristi Flanders, Belgium	16.4
126	Chaozhou Taiwan, Taiwan	16.3
126	Kalisz Greater Poland, Poland	16.3
126	Czechowice-Dziedzice Silesia, Poland	16.3
129	Aioi Hyōgo, Japan	16.2
130	Sakaiminato Tottori, Japan	16.1
130	Okayama Okayama, Japan	16.1
130	Izegem Flanders, Belgium	16.1
133	Higashinozoe Hyōgo, Japan	16.0
133	Łódź Łódź Voivodeship, Poland	16.0
133	Derby Kansas, United States	16.0
136	Yilan Taiwan, Taiwan	15.9
136	Nakatsu Oita, Japan	15.9
136	Schiedam South Holland, The Netherlands	15.9
136	Los Angeles California, United States	15.9
140	Kakogawachō-honmachi Hyōgo, Japan	15.8
140	Bizen Okayama, Japan	15.8
142	Marugame Kagawa, Japan	15.7
142	Maebaru-chūō Fukuoka, Japan	15.7
142	Kasaoka Okayama, Japan	15.7
142	Waterford Munster, Ireland	15.7
142	Milan Lombardy, Italy	15.7
147	Otwock Mazovia, Poland	15.6
147	Kłodzko Lower Silesia, Poland	15.6
149	Quezon City low-cost sensors National Capital Region, Philippines	15.5
149	Niihama Ehime, Japan	15.5
149	Kan’onjichō Kagawa, Japan	15.5
149	Rixensart Wallonia, Belgium	15.5
149	Grimbergen Flanders, Belgium	15.5
149	Rovereto Trentino-Alto Adige, Italy	15.5
155	Belgrade Central Serbia, Serbia	15.3
155	Takahashi Okayama, Japan	15.3
155	Sōja Okayama, Japan	15.3
155	Shimonoseki Yamaguchi, Japan	15.3
155	Katowice Silesia, Poland	15.3
160	Sanzhi Taipei, Taiwan	15.2
160	Tsuyama Okayama, Japan	15.2
160	Hikari Yamaguchi, Japan	15.2
160	Le Havre Normandy, France	15.2
160	Wichita Kansas, United States	15.2
160	Tatsuno Hyōgo, Japan	15.2
166	Yerevan low-cost sensors Yerevan, Armenia	15.1
166	Tsushima Nagasaki, Japan	15.1
168	Ōmuta Fukuoka, Japan	15.0
168	Rennes Brittany, France	15.0
168	Stodůlky low-cost sensors Prague, Czechia	15.0
171	Ikedachō Tokushima, Japan	14.9
171	Amagasaki Hyōgo, Japan	14.9
171	Turin Piedmont, Italy	14.9
174	Bexley England, United Kingdom	14.8
174	Kortrijk Flanders, Belgium	14.8
174	Gent Flanders, Belgium	14.8
177	Akashi Hyōgo, Japan	14.7
177	Miyakonojō Miyazaki, Japan	14.7
177	Matsuyama Ehime, Japan	14.7
177	Westbury low-cost sensors England, United Kingdom	14.7
177	Bellinzona Ticino, Switzerland	14.7
177	Mechelen Flanders, Belgium	14.7
177	Evergem Flanders, Belgium	14.7
177	Roubaix Hauts-de-France, France	14.7
177	Bilbao Basque Country, Spain	14.7
177	Hyūga Miyazaki, Japan	14.7
177	Mima Tokushima, Japan	14.7
188	Tahara Aichi, Japan	14.6
188	Suzuka Mie, Japan	14.6
188	Saiki Oita, Japan	14.6
188	Nishio Aichi, Japan	14.6
188	Zwijndrecht Flanders, Belgium	14.6
193	Yokkaichi Mie, Japan	14.5
193	Narutochō-mitsuishi Tokushima, Japan	14.5
193	Kitakyushu Fukuoka, Japan	14.5
193	Ikaruga Hyōgo, Japan	14.5
193	Lučenec Banská Bystrica Region, Slovakia	14.5
193	Capannori Tuscany, Italy	14.5
193	Owariasahi Aichi, Japan	14.5
200	Dej Cluj County, Romania	14.4

Top 200 of 2,003 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