SmogRank / History / week of September 1, 2025

Most polluted cities, week of September 1, 2025

2,213 cities ranked by their average PM2.5 over the 7 days. A city needs measurements on 70% of the days to be ranked.

← week of August 25, 2025week of September 8, 2025 →
#City µg/m³
1Calexico California, United States
157.2
2Rourkela Odisha, India
85.0
3Gummidipundi Tamil Nadu, India
75.7
4Chāpra Bihar, India
71.9
5Cuddalore Tamil Nadu, India
67.5
6Grande Prairie Alberta, Canada
58.1
7Faisalabad low-cost sensors Punjab, Pakistan
57.8
8Istanbul low-cost sensors Istanbul, Turkey
56.9
9Dushanbe Dushanbe, Tajikistan
52.5
10Serilingampalle Telangana, India
51.9
11Vereeniging low-cost sensors Gauteng, South Africa
51.8
12Squamish British Columbia, Canada
51.3
13Edmonton Alberta, Canada
49.3
14Rasapūdipalem Andhra Pradesh, India
48.6
15Calgary Alberta, Canada
46.8
16Nalbāri Assam, India
45.3
17Fort St. John British Columbia, Canada
45.1
18St. Albert Alberta, Canada
44.4
19Prince George British Columbia, Canada
44.3
20Kadapa Andhra Pradesh, India
44.0
21Multan low-cost sensors Punjab, Pakistan
43.2
22Sherwood Park Alberta, Canada
42.3
23Angul Odisha, India
41.5
24Lethbridge Alberta, Canada
40.9
25Red Deer Alberta, Canada
39.3
26Bahawalpur low-cost sensors Punjab, Pakistan
39.0
27Buxar Bihar, India
37.8
28Vijayawada Andhra Pradesh, India
37.6
29Sri Ganganagar Rajasthan, India
37.1
30Wenatchee Washington, United States
36.7
31Peshawar low-cost sensors Khyber Pakhtunkhwa, Pakistan
36.3
32Dubai low-cost sensors Dubai, United Arab Emirates
35.5
33Dhaulpur Rajasthan, India
35.0
34Quthbullapur Telangana, India
34.2
35Fort McMurray Alberta, Canada
33.7
36Anantapur Andhra Pradesh, India
33.2
37Bānswāra Rajasthan, India
33.1
38Ashaiman low-cost sensors Greater Accra, Ghana
33.0
39Bhiwadi Rajasthan, India
32.1
40Addis Ababa Addis Ababa, Ethiopia
31.9
41Yakima Washington, United States
31.5
42Lagos low-cost sensors Lagos, Nigeria
30.3
43Ajmer Rajasthan, India
30.2
43Vapi Gujarat, India
30.2
45Gujranwala low-cost sensors Punjab, Pakistan
30.1
45Muzaffarnagar Uttar Pradesh, India
30.1
47Quetta low-cost sensors Balochistan, Pakistan
29.7
48Lahore low-cost sensors Punjab, Pakistan
29.5
49Hyderabad Telangana, India
29.4
50Karachi low-cost sensors Sindh, Pakistan
28.6
51Cholula Puebla, Mexico
28.5
52West Vancouver British Columbia, Canada
28.0
53Santa Lucía Canary Islands, Spain
27.6
54Cranbrook British Columbia, Canada
27.5
55Malegaon Maharashtra, India
27.4
56Tema low-cost sensors Greater Accra, Ghana
27.3
57Kalyān Maharashtra, India
27.0
58Badlapur Maharashtra, India
26.8
58Vernon British Columbia, Canada
26.8
60Spokane Washington, United States
26.7
61Kelowna British Columbia, Canada
26.5
62Nagaon Assam, India
26.4
63Great Falls Montana, United States
26.2
64Tri-Cities Washington, United States
25.9
65Spokane Valley Washington, United States
25.8
66Helena Montana, United States
25.5
67Begusarai Bihar, India
25.4
68Shakaskraal low-cost sensors KwaZulu-Natal, South Africa
25.2
68Narela Delhi, India
25.2
70Coeur d'Alene Idaho, United States
25.0
71Kamloops British Columbia, Canada
24.8
72Kolkata West Bengal, India
24.4
72Changchun low-cost sensors Jilin, China
24.4
74Ankleshwar Gujarat, India
24.3
75Sunnyside Washington, United States
24.1
76Chennai Tamil Nadu, India
24.0
76Grants Pass Oregon, United States
24.0
78Baripāda Odisha, India
23.9
79Jalandhar Punjab, India
23.7
80Morādābād Uttar Pradesh, India
23.5
81Silchar Assam, India
23.3
81Kanpur Uttar Pradesh, India
23.3
83Tirupparangunram Tamil Nadu, India
23.1
84Swift Current Saskatchewan, Canada
22.7
84Kharghar Maharashtra, India
22.7
86Medicine Hat Alberta, Canada
22.5
87Tonk Rajasthan, India
22.4
88San Salvador Tizatlalli México, Mexico
22.3
89Joda Odisha, India
22.2
90Vijayapura Karnataka, India
22.1
91Bikaner Rajasthan, India
22.0
91Missoula Montana, United States
22.0
93Debrecen low-cost sensors Hajdú-Bihar, Hungary
21.9
94Mangaluru Karnataka, India
21.8
95Butte Montana, United States
21.7
96Pratāpgarh Rajasthan, India
21.6
96Rairangpur Odisha, India
21.6
98Rānīganj West Bengal, India
21.4
98Boisar Maharashtra, India
21.4
98Ellensburg Washington, United States
21.4
101Rawalpindi low-cost sensors Punjab, Pakistan
21.3
101Lucknow Uttar Pradesh, India
21.3
103Accra low-cost sensors Greater Accra, Ghana
20.8
104Bhiwandi Maharashtra, India
20.7
104Moscow Idaho, United States
20.7
106Wadgaon Kolhati Maharashtra, India
20.6
107Ropar Punjab, India
20.5
107Delhi Delhi, India
20.5
109Sialkot low-cost sensors Punjab, Pakistan
20.4
109Ahmedabad Gujarat, India
20.4
109Puebla Puebla, Mexico
20.4
109Lewiston Idaho, United States
20.4
109Saskatoon Saskatchewan, Canada
20.4
114Medford Oregon, United States
20.3
114Noida Uttar Pradesh, India
20.3
116Kalaburagi Karnataka, India
20.2
116Hermiston Oregon, United States
20.2
118Nanded Maharashtra, India
19.9
119Dhule Maharashtra, India
19.8
120Surat Gujarat, India
19.6
120Patna Bihar, India
19.6
120Nagpur Maharashtra, India
19.6
120Neelankarai Tamil Nadu, India
19.6
124Richards Bay low-cost sensors KwaZulu-Natal, South Africa
19.5
124Inglewood-Finn Hill low-cost sensors Washington, United States
19.5
126Rājsamand Rajasthan, India
19.3
127Sarajevo Federation of B&H, Bosnia and Herzegovina
19.2
127Chilliwack British Columbia, Canada
19.2
129Latur Maharashtra, India
19.1
129Iloilo low-cost sensors Western Visayas, Philippines
19.1
129Baddi Himachal Pradesh, India
19.1
132Jincheng Fukien, Taiwan
19.0
133Kirkland low-cost sensors Washington, United States
18.8
134Jarosław Subcarpathia, Poland
18.7
134León de los Aldama Guanajuato, Mexico
18.7
134Nandri Rajasthan, India
18.7
137Durgapur West Bengal, India
18.5
137Medina Estates low-cost sensors Greater Accra, Ghana
18.5
137García Nuevo León, Mexico
18.5
137Ashland Oregon, United States
18.5
137Greater Noida Uttar Pradesh, India
18.5
142Shivamogga Karnataka, India
18.4
143Zamość Lublin, Poland
18.3
143Coquitlam British Columbia, Canada
18.3
145Gwalior Madhya Pradesh, India
18.1
145Thornton Colorado, United States
18.1
147Arvada low-cost sensors Colorado, United States
18.0
148Gudalur Tamil Nadu, India
17.9
149Jhālāwār Rajasthan, India
17.8
149Byasanagar Odisha, India
17.8
151Bengaluru Karnataka, India
17.7
151Bakersfield California, United States
17.7
153Siwān Bihar, India
17.6
153Parbhani Maharashtra, India
17.6
155Gandhinagar Gujarat, India
17.5
156Kota Rajasthan, India
17.4
156Arrah Bihar, India
17.4
156Naharlagun Arunachal Pradesh, India
17.4
156Aya Nagar Delhi, India
17.4
160Bozeman Montana, United States
17.3
161Bhubaneswar Odisha, India
17.2
161Walla Walla Washington, United States
17.2
163Jhunjhunūn Rajasthan, India
17.1
164Hubballi Karnataka, India
17.0
165Ciudad Benito Juárez Nuevo León, Mexico
16.9
166Nisko Subcarpathia, Poland
16.8
166Jalgaon Maharashtra, India
16.8
166Brighton low-cost sensors Colorado, United States
16.8
166Billings Montana, United States
16.8
166North Vancouver British Columbia, Canada
16.8
171Pune Maharashtra, India
16.7
171Cuttack Odisha, India
16.7
171Mumbai Maharashtra, India
16.7
174Sirohi Rajasthan, India
16.5
174Ciudad General Escobedo Nuevo León, Mexico
16.5
176Shrīrāmpur West Bengal, India
16.4
176Agra Uttar Pradesh, India
16.4
176Yuanlin Taiwan, Taiwan
16.4
176Northglenn low-cost sensors Colorado, United States
16.4
176Barbil Odisha, India
16.4
181Najafgarh Delhi, India
16.3
181Hanumāngarh Rajasthan, India
16.3
183Longmont Colorado, United States
16.2
184Chānda Maharashtra, India
16.1
185Thāne Maharashtra, India
16.0
185Nāgaur Rajasthan, India
16.0
185Gaya Bihar, India
16.0
185Erlun Taiwan, Taiwan
16.0
189Snina Prešov Region, Slovakia
15.9
189Daxi Taiwan, Taiwan
15.9
189Pendleton Oregon, United States
15.9
189Abbotsford British Columbia, Canada
15.9
193Nampa Idaho, United States
15.8
194Chūru Rajasthan, India
15.7
195Douliu Taiwan, Taiwan
15.6
195Port Coquitlam British Columbia, Canada
15.6
197Otwock Mazovia, Poland
15.5
197Salamanca Guanajuato, Mexico
15.5
197Corcoran California, United States
15.5
197Burnaby British Columbia, Canada
15.5

Top 200 of 2,213 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