SmogRank / History / week of March 17, 2025

Most polluted cities, week of March 17, 2025

2,178 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	Saltillo Coahuila, Mexico	412.1
2	Cuddalore Tamil Nadu, India	125.5
3	Nalbāri Assam, India	125.2
4	Dera Māndi Delhi, India	120.2
5	Guwahati Assam, India	99.1
6	Narela Delhi, India	93.3
7	Meerut Uttar Pradesh, India	91.6
8	Hājīpur Bihar, India	83.2
9	Ghāziābād Uttar Pradesh, India	75.7
10	Vientiane low-cost sensors Vientiane Prefecture, Laos	75.1
11	Chiang Mai low-cost sensors Chiang Mai, Thailand	72.5
12	Bhiwadi Rajasthan, India	71.4
13	Najafgarh Delhi, India	70.4
14	Muzaffarnagar Uttar Pradesh, India	69.7
15	Gandhinagar Gujarat, India	67.9
16	Bāghpat Uttar Pradesh, India	65.9
17	Gurugram Haryana, India	63.4
18	Delhi Delhi, India	61.9
19	Sri Ganganagar Rajasthan, India	61.7
20	Angul Odisha, India	60.5
21	Sasarām Bihar, India	58.7
22	Nagaon Assam, India	57.8
23	Barbil Odisha, India	56.1
24	Hanumāngarh Rajasthan, India	55.2
25	Keonjhargarh Odisha, India	55.0
26	Nagpur Maharashtra, India	54.1
26	Jalgaon Maharashtra, India	54.1
28	Dubai low-cost sensors Dubai, United Arab Emirates	53.6
29	Ahmedabad Gujarat, India	53.1
30	Mahād Maharashtra, India	53.0
31	Sai Mai low-cost sensors Bangkok, Thailand	52.6
32	Gwalior Madhya Pradesh, India	52.3
32	Joda Odisha, India	52.3
34	Tumkūr Karnataka, India	52.2
35	Durgapur West Bengal, India	51.9
36	Begusarai Bihar, India	51.8
37	Lucknow Uttar Pradesh, India	51.7
37	Jalandhar Punjab, India	51.7
39	Singrauli Madhya Pradesh, India	51.6
40	Malegaon Maharashtra, India	51.0
41	Bang Pakong low-cost sensors Chachoengsao, Thailand	50.4
42	Rānīganj West Bengal, India	49.3
43	Boisar Maharashtra, India	49.1
44	Sholapur Maharashtra, India	48.9
45	Latur Maharashtra, India	48.7
46	Bangkok low-cost sensors Bangkok, Thailand	47.6
47	Ankleshwar Gujarat, India	46.9
48	Guadalajara Jalisco, Mexico	46.7
49	Rourkela Odisha, India	46.6
50	Kharghar Maharashtra, India	46.5
51	Shillong Meghalaya, India	45.9
51	Ropar Punjab, India	45.9
51	Kolkata West Bengal, India	45.9
54	Patna Bihar, India	45.3
54	Bhelai Chhattisgarh, India	45.3
54	Ajmer Rajasthan, India	45.3
57	Thāne Maharashtra, India	45.1
58	Nashik Maharashtra, India	44.9
58	Victoria de Durango Durango, Mexico	44.9
60	Gangtok Sikkim, India	44.5
61	Bharatpur Rajasthan, India	44.4
62	Prayagraj Uttar Pradesh, India	43.2
62	Agra Uttar Pradesh, India	43.2
64	Bhiwandi Maharashtra, India	43.1
65	Dādri Uttar Pradesh, India	42.9
66	Chānda Maharashtra, India	42.8
67	Sunland Park New Mexico, United States	42.5
68	Kalyān Maharashtra, India	42.4
68	Kłodzko Lower Silesia, Poland	42.4
70	Dhaulpur Rajasthan, India	42.3
70	Āsansol West Bengal, India	42.3
72	Badlapur Maharashtra, India	42.2
72	Valjevo Central Serbia, Serbia	42.2
74	El Paso Texas, United States	42.0
75	San Salvador Tizatlalli México, Mexico	41.5
76	Pune Maharashtra, India	40.9
77	Aurangabad Maharashtra, India	40.8
78	Ciudad Juárez Chihuahua, Mexico	40.3
79	Hāpur Uttar Pradesh, India	40.2
80	Chandigarh Chandigarh, India	40.1
81	Baripāda Odisha, India	39.7
82	Sawai Madhopur Rajasthan, India	39.5
83	Nanded Maharashtra, India	39.4
84	Patiāla Punjab, India	39.2
85	Akola Maharashtra, India	39.1
86	Tirupati Andhra Pradesh, India	38.8
87	Jaipur Rajasthan, India	38.7
88	Novi Pazar Central Serbia, Serbia	38.3
89	Vijayawada Andhra Pradesh, India	38.1
89	Kota Rajasthan, India	38.1
91	Shrīrāmpur West Bengal, India	37.7
91	Sāngli Maharashtra, India	37.7
93	Noida Uttar Pradesh, India	37.4
94	Cholula Puebla, Mexico	37.3
95	Czechowice-Dziedzice Silesia, Poland	37.2
96	Bhilai Chhattisgarh, India	36.7
97	Mangaluru Karnataka, India	36.3
97	Gummidipundi Tamil Nadu, India	36.3
99	Chittorgarh Rajasthan, India	35.9
100	Saharsa Bihar, India	35.8
100	Gaya Bihar, India	35.8
102	Closepet Karnataka, India	35.7
102	Kanpur Uttar Pradesh, India	35.7
102	Jhunjhunūn Rajasthan, India	35.7
105	Byasanagar Odisha, India	35.3
105	Wadgaon Kolhati Maharashtra, India	35.3
107	Bhāgalpur Bihar, India	35.0
107	Amravati Maharashtra, India	35.0
109	Pimpri-Chinchwad Maharashtra, India	34.9
110	Dūngarpur Rajasthan, India	34.8
111	Jodhpur Rajasthan, India	34.5
111	Buxar Bihar, India	34.5
113	Żywiec Silesia, Poland	34.4
113	Mohali Punjab, India	34.4
115	San Francisco Tlalcilalcalpan México, Mexico	34.3
116	Virār Maharashtra, India	34.0
117	Tlaquepaque Jalisco, Mexico	33.9
118	Vereeniging low-cost sensors Gauteng, South Africa	33.8
119	Bhayandar Maharashtra, India	33.7
120	Baddi Himachal Pradesh, India	33.6
121	Debrecen low-cost sensors Hajdú-Bihar, Hungary	33.3
121	Obrenovac Central Serbia, Serbia	33.3
123	Chāpra Bihar, India	33.1
123	San Luis de la Paz Guanajuato, Mexico	33.1
125	Pratāpgarh Rajasthan, India	32.8
125	Hacienda Santa Fe Jalisco, Mexico	32.8
127	Ciudad Nezahualcoyotl México, Mexico	32.7
127	Irapuato Guanajuato, Mexico	32.7
129	Kikinda Vojvodina, Serbia	32.4
129	Stodůlky low-cost sensors Prague, Czechia	32.4
131	Otwock Mazovia, Poland	32.2
131	Dhule Maharashtra, India	32.2
131	Serilingampalle Telangana, India	32.2
134	Bānswāra Rajasthan, India	32.1
135	Łask Łódź Voivodeship, Poland	31.8
136	Bettiah Bihar, India	31.7
137	Augustów Podlasie, Poland	31.4
137	Bhilwara Rajasthan, India	31.4
139	Hyderabad Telangana, India	31.3
140	Tonk Rajasthan, India	30.8
140	Rishīkesh Uttarakhand, India	30.8
142	Kielce Świętokrzyskie, Poland	30.5
142	Jincheng Fukien, Taiwan	30.5
144	Dębica Subcarpathia, Poland	30.4
144	Durg Chhattisgarh, India	30.4
146	Zamość Lublin, Poland	30.3
146	Smederevo Central Serbia, Serbia	30.3
146	Mumbai Maharashtra, India	30.3
146	Bielsko-Biala Silesia, Poland	30.3
146	Quthbullapur Telangana, India	30.3
151	Poznań Greater Poland, Poland	30.1
152	Włocławek Kujawsko-Pomorskie, Poland	30.0
153	Kalisz Greater Poland, Poland	29.9
154	Niš Central Serbia, Serbia	29.8
154	Tuen Mun Tuen Mun, Hong Kong	29.8
156	Ciudad Benito Juárez Nuevo León, Mexico	29.7
157	Radom Mazovia, Poland	29.6
158	Lublin Lublin, Poland	29.4
158	Bengaluru Karnataka, India	29.4
158	Santa Catarina Nuevo León, Mexico	29.4
161	Užice Central Serbia, Serbia	29.3
162	Indore Madhya Pradesh, India	29.0
163	Dausa Rajasthan, India	28.9
163	Erlun Taiwan, Taiwan	28.9
163	Mixquiahuala de Juárez Hidalgo, Mexico	28.9
166	Srinagar Jammu and Kashmir, India	28.7
166	Birmingham low-cost sensors England, United Kingdom	28.7
168	Anantapur Andhra Pradesh, India	28.5
169	Coimbatore Tamil Nadu, India	28.4
169	Būndi Rajasthan, India	28.4
171	Volos Thessaly, Greece	28.3
172	Tainan Taiwan, Taiwan	28.0
173	Jhālāwār Rajasthan, India	27.9
174	Wan Chai Wan Chai, Hong Kong	27.7
174	San Juan del Río Querétaro, Mexico	27.7
176	Douliu Taiwan, Taiwan	27.6
176	Yongkang Taiwan, Taiwan	27.6
176	Tuxtla Chiapas, Mexico	27.6
179	Arāria Bihar, India	27.4
179	Gorzów Wielkopolski Lubusz, Poland	27.4
181	Morādābād Uttar Pradesh, India	27.3
181	Atlixco Puebla, Mexico	27.3
183	Rājsamand Rajasthan, India	27.2
184	Jastrzębie Zdrój Silesia, Poland	27.0
185	Bikaner Rajasthan, India	26.8
186	Xinying Taiwan, Taiwan	26.7
187	Starachowice Świętokrzyskie, Poland	26.6
187	Raipur Chhattisgarh, India	26.6
187	Jelenia Góra Lower Silesia, Poland	26.6
187	Puebla Puebla, Mexico	26.6
191	Sīkar Rajasthan, India	26.3
191	Mexico City Mexico City, Mexico	26.3
191	Greater Noida Uttar Pradesh, India	26.3
194	Rzeszów Subcarpathia, Poland	26.2
194	Nisko Subcarpathia, Poland	26.2
196	Istanbul low-cost sensors Istanbul, Turkey	26.1
197	Yadgir Karnataka, India	26.0
198	Dej Cluj County, Romania	25.9
198	Faridabad Haryana, India	25.9
198	Beigang Taiwan, Taiwan	25.9

Top 200 of 2,178 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