SmogRank / History / May 2025

Most polluted cities, May 2025

2,043 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	Cuddalore Tamil Nadu, India	92.9
2	Narela Delhi, India	79.0
3	Muzaffarnagar Uttar Pradesh, India	69.2
4	Najafgarh Delhi, India	64.5
5	Delhi Delhi, India	63.2
6	Lucknow Uttar Pradesh, India	60.7
7	Dushanbe Dushanbe, Tajikistan	59.9
8	Ghāziābād Uttar Pradesh, India	59.1
9	Bhiwadi Rajasthan, India	54.7
10	Hanumāngarh Rajasthan, India	54.5
11	Baddi Himachal Pradesh, India	53.8
12	Gandhinagar Gujarat, India	53.6
13	Patiāla Punjab, India	52.3
14	Noida Uttar Pradesh, India	50.7
15	Jaipur Rajasthan, India	49.2
16	Sri Ganganagar Rajasthan, India	49.0
17	Keonjhargarh Odisha, India	48.2
18	Rourkela Odisha, India	47.5
19	Hājīpur Bihar, India	47.1
20	Bhelai Chhattisgarh, India	46.7
21	Bikaner Rajasthan, India	46.2
22	Greater Noida Uttar Pradesh, India	45.8
23	Jalandhar Punjab, India	45.7
24	Ahmedabad Gujarat, India	44.6
25	Dubai low-cost sensors Dubai, United Arab Emirates	43.8
25	Ajmer Rajasthan, India	43.8
27	Vereeniging low-cost sensors Gauteng, South Africa	43.3
27	Dādri Uttar Pradesh, India	43.3
29	Tonk Rajasthan, India	43.0
30	Singrauli Madhya Pradesh, India	42.9
31	Nagaon Assam, India	42.8
32	Bhiwandi Maharashtra, India	42.5
33	Gwalior Madhya Pradesh, India	42.4
34	Badlapur Maharashtra, India	41.9
35	Chandigarh Chandigarh, India	41.3
36	Mohali Punjab, India	41.2
37	Anantapur Andhra Pradesh, India	41.0
38	Hyderabad Telangana, India	40.3
39	Kanpur Uttar Pradesh, India	40.0
40	Sīkar Rajasthan, India	39.6
41	Jhālāwār Rajasthan, India	39.2
42	Sawai Madhopur Rajasthan, India	38.9
42	Chūru Rajasthan, India	38.9
44	Vijayawada Andhra Pradesh, India	38.8
45	Cuttack Odisha, India	38.5
46	Nāgaur Rajasthan, India	38.0
47	Kalyān Maharashtra, India	37.9
48	Dausa Rajasthan, India	37.7
49	Jhunjhunūn Rajasthan, India	37.6
50	Meerut Uttar Pradesh, India	37.3
51	Nagpur Maharashtra, India	37.2
52	Patna Bihar, India	36.8
53	Bārmer Rajasthan, India	36.6
54	Bhilwara Rajasthan, India	36.3
55	Gaya Bihar, India	35.6
56	Tirupparangunram Tamil Nadu, India	35.4
56	Angul Odisha, India	35.4
58	Cholula Puebla, Mexico	35.3
59	Rasapūdipalem Andhra Pradesh, India	34.9
60	Kharghar Maharashtra, India	34.8
61	Chittorgarh Rajasthan, India	34.7
61	Prayagraj Uttar Pradesh, India	34.7
63	Karauli Rajasthan, India	34.6
64	Hacienda Santa Fe Jalisco, Mexico	34.5
65	Agra Uttar Pradesh, India	34.2
66	Kota Rajasthan, India	33.2
67	Rairangpur Odisha, India	33.0
68	Joda Odisha, India	32.5
69	Panvel Maharashtra, India	32.4
70	Bharatpur Rajasthan, India	32.2
71	Kolkata West Bengal, India	31.8
72	Sāngli Maharashtra, India	31.7
72	Gummidipundi Tamil Nadu, India	31.7
72	Puebla Puebla, Mexico	31.7
75	Būndi Rajasthan, India	31.6
76	Jalgaon Maharashtra, India	31.1
76	Dūngarpur Rajasthan, India	31.1
78	Bārān Rajasthan, India	30.8
79	Mahād Maharashtra, India	30.6
80	Jaisalmer Rajasthan, India	30.0
81	Tirumala Andhra Pradesh, India	29.9
81	Wadgaon Kolhati Maharashtra, India	29.9
83	Aurangabad Maharashtra, India	29.6
84	Jodhpur Rajasthan, India	29.5
85	Thāne Maharashtra, India	29.4
86	Jalor Rajasthan, India	29.2
87	Tlaquepaque Jalisco, Mexico	29.1
88	Rānīganj West Bengal, India	28.9
88	Amaravati Andhra Pradesh, India	28.9
90	Nashik Maharashtra, India	28.7
91	Ankleshwar Gujarat, India	28.5
92	Surat Gujarat, India	28.3
92	Barbil Odisha, India	28.3
94	Chāpra Bihar, India	28.2
95	Hāpur Uttar Pradesh, India	28.1
95	Bhopal Madhya Pradesh, India	28.1
95	Akola Maharashtra, India	28.1
95	Victoria de Durango Durango, Mexico	28.1
99	Vapi Gujarat, India	27.7
100	Amravati Maharashtra, India	27.5
101	Sholapur Maharashtra, India	27.3
102	Chennai Tamil Nadu, India	27.2
103	Rishīkesh Uttarakhand, India	26.7
104	Latur Maharashtra, India	26.6
105	Apizaco Tlaxcala, Mexico	26.5
106	Serilingampalle Telangana, India	26.4
106	Byasanagar Odisha, India	26.4
108	Arāria Bihar, India	26.1
109	Āsansol West Bengal, India	26.0
109	Ciudad Benito Juárez Nuevo León, Mexico	26.0
111	Neelankarai Tamil Nadu, India	25.7
112	Rājsamand Rajasthan, India	25.1
112	Kolhāpur Maharashtra, India	25.1
114	Naucalpan de Juárez México, Mexico	24.9
115	Chānda Maharashtra, India	24.6
116	Mixquiahuala de Juárez Hidalgo, Mexico	24.4
116	Ciudad Nezahualcoyotl México, Mexico	24.4
118	Morādābād Uttar Pradesh, India	24.3
118	Tehuacán Puebla, Mexico	24.3
118	Aguascalientes Aguascalientes, Mexico	24.3
121	Saugor Madhya Pradesh, India	24.0
121	Pratāpgarh Rajasthan, India	24.0
121	Nandri Rajasthan, India	24.0
124	Monterrey Nuevo León, Mexico	23.8
125	Shillong Meghalaya, India	23.6
125	Tepeji del Río de Ocampo Hidalgo, Mexico	23.6
127	Shrīrāmpur West Bengal, India	23.3
127	Durgapur West Bengal, India	23.3
129	Shakaskraal low-cost sensors KwaZulu-Natal, South Africa	23.2
130	Tongaat low-cost sensors KwaZulu-Natal, South Africa	23.1
131	Istanbul low-cost sensors Istanbul, Turkey	22.9
132	San Martin Texmelucan de Labastida Puebla, Mexico	22.5
132	Ciudad Juárez Chihuahua, Mexico	22.5
134	Virār Maharashtra, India	22.3
134	Mexico City Mexico City, Mexico	22.3
136	Dhaulpur Rajasthan, India	22.2
137	Silchar Assam, India	22.1
138	Vijayapura Karnataka, India	22.0
138	Wan Chai Wan Chai, Hong Kong	22.0
140	Guadalajara Jalisco, Mexico	21.8
141	Jabalpur Madhya Pradesh, India	21.7
141	Boisar Maharashtra, India	21.7
143	Tulancingo Hidalgo, Mexico	21.4
144	Pimpri-Chinchwad Maharashtra, India	21.3
145	Baripāda Odisha, India	21.1
146	Sirohi Rajasthan, India	21.0
146	Khlong Luang low-cost sensors Pathum Thani, Thailand	21.0
148	Vientiane low-cost sensors Vientiane Prefecture, Laos	20.9
148	León de los Aldama Guanajuato, Mexico	20.9
150	Bhubaneswar Odisha, India	20.8
150	Bhayandar Maharashtra, India	20.8
150	Santiago de Querétaro Querétaro, Mexico	20.8
153	Bengaluru Karnataka, India	20.4
154	Mumbai Maharashtra, India	20.2
154	Salamanca Guanajuato, Mexico	20.2
156	Pune Maharashtra, India	20.1
156	Nanded Maharashtra, India	20.1
156	Iloilo low-cost sensors Western Visayas, Philippines	20.1
159	Raipur Chhattisgarh, India	20.0
160	Tepic Nayarit, Mexico	19.9
160	Fort McMurray Alberta, Canada	19.9
162	Guwahati Assam, India	19.8
163	San Juan del Río Querétaro, Mexico	19.7
164	Hubballi Karnataka, India	19.5
164	San Luis Potosí San Luis Potosí, Mexico	19.5
166	Celaya Guanajuato, Mexico	19.3
167	Mérida Yucatán, Mexico	19.1
168	Irapuato Guanajuato, Mexico	19.0
169	Shivamogga Karnataka, India	18.7
170	Sai Mai low-cost sensors Bangkok, Thailand	18.4
171	Ourense Galicia, Spain	18.3
172	Gudalur Tamil Nadu, India	18.2
173	Sunland Park New Mexico, United States	17.8
174	San Miguel de Allende Guanajuato, Mexico	17.5
175	Perundurai Tamil Nadu, India	17.4
175	Santa Anita Jalisco, Mexico	17.4
177	Tula de Allende Hidalgo, Mexico	17.3
178	Indore Madhya Pradesh, India	17.0
179	Bangkok low-cost sensors Bangkok, Thailand	16.8
180	Durg Chhattisgarh, India	16.7
181	Prince Albert Saskatchewan, Canada	16.6
182	Kalaburagi Karnataka, India	16.5
182	Abasolo Guanajuato, Mexico	16.5
184	Tuen Mun Tuen Mun, Hong Kong	16.4
185	Jincheng Fukien, Taiwan	16.2
185	Zapopan Jalisco, Mexico	16.2
187	Edinburg Texas, United States	15.9
188	El Paso Texas, United States	15.5
188	Rangiora Canterbury, New Zealand	15.5
190	Laredo Texas, United States	15.4
191	La Providencia Siglo XXI Hidalgo, Mexico	15.3
191	Chrang Chamreh Muoy low-cost sensors Phnom Penh, Cambodia	15.3
193	Ōtsuki Yamanashi, Japan	15.2
194	Onomichi Hiroshima, Japan	15.1
195	Richards Bay low-cost sensors KwaZulu-Natal, South Africa	14.8
196	Bang Pakong low-cost sensors Chachoengsao, Thailand	14.6
196	Tamana Kumamoto, Japan	14.6
196	Brownsville Texas, United States	14.6
196	Socorro Texas, United States	14.6
200	Nakatsu Oita, Japan	14.4

Top 200 of 2,043 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