SmogRank / History / September 2025

Most polluted cities, September 2025

2,439 cities ranked by their average PM2.5 over the 30 days. A city needs measurements on 70% of the days to be ranked.

#	City	µg/m³
1	Calexico California, United States	178.8
2	Kanchipuram Tamil Nadu, India	104.0
3	Gummidipundi Tamil Nadu, India	79.2
4	Cuddalore Tamil Nadu, India	70.7
5	Peshawar low-cost sensors Khyber Pakhtunkhwa, Pakistan	64.6
6	Faisalabad low-cost sensors Punjab, Pakistan	62.6
7	Gujranwala low-cost sensors Punjab, Pakistan	62.0
8	Rourkela Odisha, India	59.5
9	Dushanbe Dushanbe, Tajikistan	57.1
10	Ariyalūr Tamil Nadu, India	55.6
11	Lahore low-cost sensors Punjab, Pakistan	52.5
12	Multan low-cost sensors Punjab, Pakistan	51.9
13	Rasapūdipalem Andhra Pradesh, India	50.7
14	Sialkot low-cost sensors Punjab, Pakistan	50.5
15	Kigali Kigali, Rwanda	50.1
16	Chāpra Bihar, India	49.9
17	Kadapa Andhra Pradesh, India	44.3
18	Greater Noida Uttar Pradesh, India	44.1
18	Santa Anita - Los Ficus Lima region, Peru	44.1
20	Bhiwadi Rajasthan, India	43.6
21	Serilingampalle Telangana, India	43.4
22	Karauli Rajasthan, India	41.4
23	Muzaffarnagar Uttar Pradesh, India	40.0
24	Istanbul low-cost sensors Istanbul, Turkey	39.8
25	Vereeniging low-cost sensors Gauteng, South Africa	39.6
26	Baddi Himachal Pradesh, India	39.3
27	Narela Delhi, India	38.7
28	Jakarta Jakarta, Indonesia	38.5
29	Rawalpindi low-cost sensors Punjab, Pakistan	38.4
29	Bānswāra Rajasthan, India	38.4
31	Bhāgalpur Bihar, India	38.1
32	Buxar Bihar, India	37.9
33	Nalbāri Assam, India	37.5
34	Joda Odisha, India	37.1
35	Dādri Uttar Pradesh, India	36.7
36	Dubai low-cost sensors Dubai, United Arab Emirates	36.5
37	Lima Lima Province, Peru	35.6
38	Lucknow Uttar Pradesh, India	35.5
39	Bahawalpur low-cost sensors Punjab, Pakistan	35.3
40	Vapi Gujarat, India	35.2
41	Tonk Rajasthan, India	35.1
42	Sri Ganganagar Rajasthan, India	34.9
43	Wenatchee Washington, United States	34.8
44	Islamabad low-cost sensors Islamabad, Pakistan	34.7
44	Ghāziābād Uttar Pradesh, India	34.7
44	Anantapur Andhra Pradesh, India	34.7
44	Noida Uttar Pradesh, India	34.7
48	Virār Maharashtra, India	33.3
49	Addis Ababa Addis Ababa, Ethiopia	32.9
50	Morādābād Uttar Pradesh, India	32.6
51	Angul Odisha, India	32.5
52	Delhi Delhi, India	31.9
53	Nagaon Assam, India	31.3
54	San Francisco De Borja Lima region, Peru	30.6
55	Quetta low-cost sensors Balochistan, Pakistan	30.4
55	Hāpur Uttar Pradesh, India	30.4
55	Gwalior Madhya Pradesh, India	30.4
58	Patna Bihar, India	30.2
59	Agra Uttar Pradesh, India	29.8
60	Jalandhar Punjab, India	29.4
61	Wadgaon Kolhati Maharashtra, India	29.3
62	Rānīganj West Bengal, India	29.1
62	Kanpur Uttar Pradesh, India	29.1
64	Dhaulpur Rajasthan, India	29.0
65	Kharghar Maharashtra, India	28.9
66	Ankleshwar Gujarat, India	28.6
67	Karachi low-cost sensors Sindh, Pakistan	28.5
68	Ajmer Rajasthan, India	28.4
69	Jalgaon Maharashtra, India	28.2
70	Callao Callao, Peru	28.1
71	Kalyān Maharashtra, India	28.0
72	Aurangabad Maharashtra, India	27.9
73	Tiruchirappalli Tamil Nadu, India	27.6
73	Aya Nagar Delhi, India	27.6
75	Lagos low-cost sensors Lagos, Nigeria	27.3
76	Ashaiman low-cost sensors Greater Accra, Ghana	27.2
77	Gūduvāncheri Tamil Nadu, India	26.9
78	Cholula Puebla, Mexico	26.5
79	Panvel Maharashtra, India	26.4
80	Baripāda Odisha, India	26.2
81	Fort McMurray Alberta, Canada	26.1
82	Saugor Madhya Pradesh, India	25.9
82	Ropar Punjab, India	25.9
84	Chandigarh Chandigarh, India	25.7
85	Chittorgarh Rajasthan, India	25.6
85	Edmonton Alberta, Canada	25.6
87	Badlapur Maharashtra, India	25.5
88	Sirohi Rajasthan, India	25.4
89	Kolkata West Bengal, India	25.1
90	Bengaluru Karnataka, India	25.0
91	Mangaluru Karnataka, India	24.9
91	Chennai Tamil Nadu, India	24.9
91	Hyderabad Telangana, India	24.9
94	Grande Prairie Alberta, Canada	24.8
95	Jaipur Rajasthan, India	24.6
95	Gaya Bihar, India	24.6
97	Tirupparangunram Tamil Nadu, India	24.3
97	Najafgarh Delhi, India	24.3
99	Quezon City low-cost sensors National Capital Region, Philippines	24.2
100	Xonacatlán México, Mexico	24.0
100	Calgary Alberta, Canada	24.0
102	Tema low-cost sensors Greater Accra, Ghana	23.7
103	Nagpur Maharashtra, India	23.6
103	Hanumāngarh Rajasthan, India	23.6
105	Shenyang Liaoning, China	23.1
106	Durgapur West Bengal, India	22.6
107	Dhule Maharashtra, India	22.4
108	Changchun low-cost sensors Jilin, China	22.3
109	Silchar Assam, India	22.2
110	Vijayapura Karnataka, India	22.0
111	Ahmedabad Gujarat, India	21.8
112	Pratāpgarh Rajasthan, India	21.7
113	Prince George British Columbia, Canada	21.6
114	Siwān Bihar, India	21.5
114	Nashik Maharashtra, India	21.5
114	Bhiwandi Maharashtra, India	21.5
117	St. Albert Alberta, Canada	21.4
118	Jhālāwār Rajasthan, India	21.3
118	Agüimes Canary Islands, Spain	21.3
120	Bharatpur Rajasthan, India	21.1
120	San Salvador Tizatlalli México, Mexico	21.1
120	Neelankarai Tamil Nadu, India	21.1
123	Coimbatore Tamil Nadu, India	21.0
124	Gandhinagar Gujarat, India	20.7
124	Bhilwara Rajasthan, India	20.7
126	Jabalpur Madhya Pradesh, India	20.6
126	Boisar Maharashtra, India	20.6
126	Āsansol West Bengal, India	20.6
129	Jhunjhunūn Rajasthan, India	20.5
130	Salem Tamil Nadu, India	20.3
130	Dausa Rajasthan, India	20.3
130	Sherwood Park Alberta, Canada	20.3
130	Barbil Odisha, India	20.3
134	Red Deer Alberta, Canada	20.2
135	Rairangpur Odisha, India	20.0
136	Santa Catarina Nuevo León, Mexico	19.8
136	Lethbridge Alberta, Canada	19.8
138	Shakaskraal low-cost sensors KwaZulu-Natal, South Africa	19.7
138	Kota Rajasthan, India	19.7
140	Rājsamand Rajasthan, India	19.5
141	Byasanagar Odisha, India	19.3
142	Shivamogga Karnataka, India	19.0
142	Bhopal Madhya Pradesh, India	19.0
144	Santa Lucía Canary Islands, Spain	18.9
145	Iloilo low-cost sensors Western Visayas, Philippines	18.7
146	Hubballi Karnataka, India	18.6
146	Bikaner Rajasthan, India	18.6
146	Sarajevo Federation of B&H, Bosnia and Herzegovina	18.6
149	Accra low-cost sensors Greater Accra, Ghana	18.5
150	Nandri Rajasthan, India	18.4
151	Maspalomas Canary Islands, Spain	18.3
151	Yakima Washington, United States	18.3
153	Sāngli Maharashtra, India	18.2
153	Chānda Maharashtra, India	18.2
153	Ingenio Canary Islands, Spain	18.2
153	Cranbrook British Columbia, Canada	18.2
157	Cuernavaca Morelos, Mexico	18.1
158	Karur Tamil Nadu, India	18.0
159	Parbhani Maharashtra, India	17.9
160	Thāne Maharashtra, India	17.8
160	Pune Maharashtra, India	17.8
160	Amravati Maharashtra, India	17.8
163	Gudalur Tamil Nadu, India	17.7
164	Jalor Rajasthan, India	17.6
164	Cuttack Odisha, India	17.6
164	Bhubaneswar Odisha, India	17.6
164	Bārān Rajasthan, India	17.6
164	Moses Lake Washington, United States	17.6
169	Shrīrāmpur West Bengal, India	17.5
169	Grants Pass Oregon, United States	17.5
169	Navalpattu Tamil Nadu, India	17.5
172	Patiāla Punjab, India	17.4
172	Dūngarpur Rajasthan, India	17.4
172	Mumbai Maharashtra, India	17.4
172	Arrah Bihar, India	17.4
172	Haldia West Bengal, India	17.4
172	Naharlagun Arunachal Pradesh, India	17.4
178	Prayagraj Uttar Pradesh, India	17.3
179	Perundurai Tamil Nadu, India	17.2
180	Medina Estates low-cost sensors Greater Accra, Ghana	17.0
180	Squamish British Columbia, Canada	17.0
182	Madikeri Karnataka, India	16.9
182	Coeur d'Alene Idaho, United States	16.9
184	Sīkar Rajasthan, India	16.8
184	Begusarai Bihar, India	16.8
186	Chūru Rajasthan, India	16.6
187	Spokane Washington, United States	16.5
188	Kalaburagi Karnataka, India	16.4
189	Prokuplje Central Serbia, Serbia	16.2
189	Sawai Madhopur Rajasthan, India	16.2
189	Bhilai Chhattisgarh, India	16.2
189	Akola Maharashtra, India	16.2
193	Nanded Maharashtra, India	16.0
194	Siedlce Mazovia, Poland	15.8
194	Jodhpur Rajasthan, India	15.8
196	Tirumala Andhra Pradesh, India	15.7
196	Spokane Valley Washington, United States	15.7
198	Mahād Maharashtra, India	15.6
198	García Nuevo León, Mexico	15.6
198	Fort St. John British Columbia, Canada	15.6

Top 200 of 2,439 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