SmogRank / History / March 2024

Most polluted cities, March 2024

1,432 cities ranked by their average PM2.5 over the 31 days. A city needs measurements on 70% of the days to be ranked.

#	City	µg/m³
1	N'Djamena N’Djaména, Chad	176.4
2	Dhaka low-cost sensors Dhaka Division, Bangladesh	117.8
3	Chiang Mai low-cost sensors Chiang Mai, Thailand	101.4
4	Lahore low-cost sensors Punjab, Pakistan	99.9
5	Delhi Delhi, India	76.9
6	Kathmandu low-cost sensors Bagmati Province, Nepal	71.4
7	Kampala low-cost sensors Central Region, Uganda	70.3
8	Kolkata West Bengal, India	70.1
9	Peshawar low-cost sensors Khyber Pakhtunkhwa, Pakistan	61.1
10	Hanoi Hanoi, Vietnam	53.8
11	Beijing Beijing, China	53.2
12	Hyderabad Telangana, India	47.5
13	Karachi low-cost sensors Sindh, Pakistan	46.4
14	Yangon Yangon, Myanmar	46.3
15	Shenyang Liaoning, China	43.6
16	Kigali Kigali, Rwanda	42.1
17	Cairo Cairo, Egypt	41.8
18	Mumbai Maharashtra, India	40.3
19	Novi Pazar Central Serbia, Serbia	38.5
20	Baghdad Baghdad, Iraq	36.2
21	Islamabad low-cost sensors Islamabad, Pakistan	35.9
22	Dushanbe Dushanbe, Tajikistan	35.3
23	Ulan Bator Ulaanbaatar, Mongolia	34.9
24	Działdowo Warmia-Masuria, Poland	34.4
25	Bangkok low-cost sensors Bangkok, Thailand	33.5
26	Colombo Western Province, Sri Lanka	33.1
27	Włocławek Kujawsko-Pomorskie, Poland	32.8
28	Banja Luka Srpska, Bosnia and Herzegovina	32.1
29	Sarajevo Federation of B&H, Bosnia and Herzegovina	30.9
30	Poznań Greater Poland, Poland	30.4
31	Racibórz Silesia, Poland	30.1
32	Zgierz Łódź Voivodeship, Poland	29.9
32	Łask Łódź Voivodeship, Poland	29.9
34	Skarżysko-Kamienna Świętokrzyskie, Poland	29.6
34	Kościan Greater Poland, Poland	29.6
36	Chennai Tamil Nadu, India	29.5
37	Szczecin West Pomerania, Poland	29.3
37	Kutno Łódź Voivodeship, Poland	29.3
39	Radomsko Łódź Voivodeship, Poland	29.0
40	Jakarta Jakarta, Indonesia	28.7
40	Opole Opole Voivodeship, Poland	28.7
42	Guangzhou Guangdong, China	28.6
43	Kalisz Greater Poland, Poland	28.4
44	Żywiec Silesia, Poland	28.2
45	Siedlce Mazovia, Poland	28.1
46	Celaya Guanajuato, Mexico	28.0
47	Bielsko-Biala Silesia, Poland	27.9
48	Katowice Silesia, Poland	27.5
49	Lębork Pomerania, Poland	27.1
49	Kraków Lesser Poland, Poland	27.1
51	Otwock Mazovia, Poland	27.0
52	Salor Tashkent Region, Uzbekistan	26.9
52	Zhushan Taiwan, Taiwan	26.9
52	Jastrzębie Zdrój Silesia, Poland	26.9
55	Fengshan Takao, Taiwan	26.5
56	Pruszków Mazovia, Poland	26.4
56	Astana Astana, Kazakhstan	26.4
56	Almaty low-cost sensors Almaty, Kazakhstan	26.4
59	Jincheng Fukien, Taiwan	26.0
60	Douliu Taiwan, Taiwan	25.9
61	Chaozhou Taiwan, Taiwan	25.7
62	Przemyśl Subcarpathia, Poland	25.6
62	Lazarevac Central Serbia, Serbia	25.6
64	Żyrardów Mazovia, Poland	25.5
65	Erlin Taiwan, Taiwan	25.2
66	Bydgoszcz Kujawsko-Pomorskie, Poland	25.1
67	Zamość Lublin, Poland	25.0
67	Starachowice Świętokrzyskie, Poland	25.0
67	Náchod Hradec Králové Region, Czechia	25.0
70	Beigang Taiwan, Taiwan	24.9
70	Gorzów Wielkopolski Lubusz, Poland	24.9
70	Czechowice-Dziedzice Silesia, Poland	24.9
73	Legionowo Mazovia, Poland	24.8
74	Kościerzyna Pomerania, Poland	24.5
75	Zemun Central Serbia, Serbia	24.4
75	Kaohsiung Takao, Taiwan	24.4
77	Taibao Taiwan, Taiwan	24.3
77	Chiayi City Taiwan, Taiwan	24.3
79	Kłodzko Lower Silesia, Poland	24.2
80	Łuków Lublin, Poland	24.1
81	Kędzierzyn-Koźle Opole Voivodeship, Poland	24.0
82	Mielec Subcarpathia, Poland	23.9
82	Yongkang Taiwan, Taiwan	23.9
82	Erlun Taiwan, Taiwan	23.9
85	Radom Mazovia, Poland	23.7
85	Lublin Lublin, Poland	23.7
87	Pančevo Vojvodina, Serbia	23.6
87	Yuanlin Taiwan, Taiwan	23.6
89	Puli Taiwan, Taiwan	23.4
90	Grajewo Podlasie, Poland	23.2
91	Konstancin-Jeziorna Mazovia, Poland	23.1
92	Tainan Taiwan, Taiwan	23.0
93	Algiers Algiers, Algeria	22.8
94	Wrocław Lower Silesia, Poland	22.5
94	Toruń Kujawsko-Pomorskie, Poland	22.5
96	Jarosław Subcarpathia, Poland	22.3
97	Nisko Subcarpathia, Poland	22.2
97	Niš Central Serbia, Serbia	22.2
99	Baku Baki, Azerbaijan	22.0
99	Olsztyn Warmia-Masuria, Poland	22.0
99	Płock Mazovia, Poland	22.0
102	Nantou Taiwan, Taiwan	21.9
103	Miskolc Borsod-Abaúj-Zemplén, Hungary	21.8
103	Bytów Pomerania, Poland	21.8
105	Shulin Taipei, Taiwan	21.7
106	Kielce Świętokrzyskie, Poland	21.5
106	Xinying Taiwan, Taiwan	21.5
106	Łódź Łódź Voivodeship, Poland	21.5
109	Salamanca Guanajuato, Mexico	21.4
110	Hsinchu Taiwan, Taiwan	21.3
111	Augustów Podlasie, Poland	21.1
111	Taichung Taiwan, Taiwan	21.1
113	Rzeszów Subcarpathia, Poland	20.9
114	Ban Khlong Prawet low-cost sensors Bangkok, Thailand	20.8
114	Zhubei Taiwan, Taiwan	20.8
114	Abuja low-cost sensors FCT, Nigeria	20.8
114	Strzelce Opolskie Opole Voivodeship, Poland	20.8
118	Elbląg Warmia-Masuria, Poland	20.6
119	Pułtusk Mazovia, Poland	20.3
120	Warsaw Mazovia, Poland	20.2
120	Belgrade Central Serbia, Serbia	20.2
122	Obrenovac Central Serbia, Serbia	20.1
122	Gdynia Pomerania, Poland	20.1
124	Toufen Taiwan, Taiwan	20.0
124	Jelenia Góra Lower Silesia, Poland	20.0
126	Addis Ababa Addis Ababa, Ethiopia	19.9
127	Smederevo Central Serbia, Serbia	19.6
127	Silao de la Victoria Guanajuato, Mexico	19.6
129	Wawer Mazovia, Poland	19.5
130	Antananarivo Analamanga, Madagascar	19.1
130	Zhudong Taiwan, Taiwan	19.1
130	Changhua Taiwan, Taiwan	19.1
133	Neili Taiwan, Taiwan	19.0
134	Sremčica Central Serbia, Serbia	18.7
135	Buzi Taiwan, Taiwan	18.6
136	Świecie Kujawsko-Pomorskie, Poland	18.3
137	Tarnów Lesser Poland, Poland	18.2
137	Białystok Podlasie, Poland	18.2
137	Taipei Taiwan, Taiwan	18.2
137	New Taipei City Taipei, Taiwan	18.2
141	Daxi Taiwan, Taiwan	18.1
141	Miaoli Taiwan, Taiwan	18.1
141	Taoyuan Taiwan, Taiwan	18.1
144	Kołobrzeg West Pomerania, Poland	18.0
145	Sopot Pomerania, Poland	17.8
146	Gdańsk Pomerania, Poland	17.5
147	Xizhou Taiwan, Taiwan	17.4
148	Ciudad Juárez Chihuahua, Mexico	17.1
149	Quezon City low-cost sensors National Capital Region, Philippines	16.8
150	Belmopan Cayo District, Belize	16.7
150	San Luis de la Paz Guanajuato, Mexico	16.7
152	Żary Lubusz, Poland	16.5
153	Xizhi Taipei, Taiwan	16.4
153	Baytown Texas, United States	16.4
155	Irapuato Guanajuato, Mexico	16.2
156	Ełk Warmia-Masuria, Poland	16.1
157	Ulu Bedok Singapore	15.8
158	Keelung Taiwan, Taiwan	15.6
159	Suwałki Podlasie, Poland	15.4
160	Mission Texas, United States	15.3
161	Novi Sad Vojvodina, Serbia	15.1
162	Hamar Innlandet, Norway	14.9
163	Botevgrad low-cost sensors Sofia, Bulgaria	14.8
163	León de los Aldama Guanajuato, Mexico	14.8
165	Asunción low-cost sensors Asuncion, Paraguay	14.5
166	Magong Taiwan, Taiwan	14.3
167	Bishkek low-cost sensors Bishkek, Kyrgyzstan	14.1
167	Edinburg Texas, United States	14.1
169	Saijō Ehime, Japan	14.0
170	Ang Mo Kio New Town Singapore	13.8
171	Hualien City Taiwan, Taiwan	13.6
172	Haskovo low-cost sensors Haskovo, Bulgaria	13.4
173	San Miguel de Allende Guanajuato, Mexico	13.1
174	Kansas City Kansas, United States	13.0
175	Niihama Ehime, Japan	12.9
175	Nakatsu Oita, Japan	12.9
175	Maebaru-chūō Fukuoka, Japan	12.9
175	Guanajuato Guanajuato, Mexico	12.9
179	Shikokuchūō Ehime, Japan	12.8
180	Yilan Taiwan, Taiwan	12.7
180	Kasaoka Okayama, Japan	12.7
182	Sanzhi Taipei, Taiwan	12.5
182	Abasolo Guanajuato, Mexico	12.5
182	Birmingham Alabama, United States	12.5
185	Sevlievo low-cost sensors Gabrovo, Bulgaria	12.3
185	Fukuyama Hiroshima, Japan	12.3
185	Regina Saskatchewan, Canada	12.3
188	Kurashiki Okayama, Japan	12.2
188	Arida Wakayama, Japan	12.2
190	Szeged Csongrád, Hungary	12.1
190	Maarssen Utrecht, The Netherlands	12.1
192	Miyakonojō Miyazaki, Japan	12.0
192	Ponca City Oklahoma, United States	12.0
194	Yawata Kyoto, Japan	11.9
194	Tsushima Nagasaki, Japan	11.9
196	Tamano Okayama, Japan	11.8
196	Kanoya Kagoshima, Japan	11.8
196	Asakuchi Okayama, Japan	11.8
199	Tahara Aichi, Japan	11.7
199	Koga Fukuoka, Japan	11.7

Top 200 of 1,432 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