SmogRank / History / September 2, 2025

Most polluted cities on September 2, 2025

2,220 cities ranked by their average PM2.5 over the day. Each city's own local calendar day.

#	City	µg/m³	× WHO
1	Calexico California, United States	150.3	10.0×
2	Cuddalore Tamil Nadu, India	105.0	7.0×
3	Calgary Alberta, Canada	100.3	6.7×
4	Gummidipundi Tamil Nadu, India	88.5	5.9×
5	Lethbridge Alberta, Canada	72.8	4.9×
6	Grande Prairie Alberta, Canada	68.6	4.6×
7	Dubai low-cost sensors Dubai, United Arab Emirates	67.1	4.5×
8	Vereeniging low-cost sensors Gauteng, South Africa	64.9	4.3×
9	Bikaner Rajasthan, India	64.8	4.3×
10	Prince George British Columbia, Canada	62.3	4.2×
11	Red Deer Alberta, Canada	62.2	4.1×
12	Istanbul low-cost sensors Istanbul, Turkey	54.2	3.6×
13	Swift Current Saskatchewan, Canada	53.4	3.6×
14	Fort St. John British Columbia, Canada	49.7	3.3×
15	Fort McMurray Alberta, Canada	48.9	3.3×
16	Medicine Hat Alberta, Canada	48.0	3.2×
17	Edmonton Alberta, Canada	46.6	3.1×
18	Sri Ganganagar Rajasthan, India	45.9	3.1×
19	Faisalabad low-cost sensors Punjab, Pakistan	44.3	3.0×
20	Bahawalpur low-cost sensors Punjab, Pakistan	44.1	2.9×
21	Vijayawada Andhra Pradesh, India	42.8	2.9×
22	St. Albert Alberta, Canada	42.4	2.8×
23	Chittoor Andhra Pradesh, India	42.3	2.8×
24	Bānswāra Rajasthan, India	42.2	2.8×
25	Dushanbe Dushanbe, Tajikistan	41.9	2.8×
25	Sherwood Park Alberta, Canada	41.9	2.8×
27	Tirupati Andhra Pradesh, India	41.0	2.7×
28	Multan low-cost sensors Punjab, Pakistan	39.7	2.6×
29	Tirupparangunram Tamil Nadu, India	38.5	2.6×
29	Angul Odisha, India	38.5	2.6×
31	Kadapa Andhra Pradesh, India	37.8	2.5×
32	Buxar Bihar, India	37.7	2.5×
33	Rasapūdipalem Andhra Pradesh, India	35.6	2.4×
34	Shakaskraal low-cost sensors KwaZulu-Natal, South Africa	35.0	2.3×
35	Malegaon Maharashtra, India	34.5	2.3×
36	Vapi Gujarat, India	34.2	2.3×
37	Changchun low-cost sensors Jilin, China	34.1	2.3×
38	Regina Saskatchewan, Canada	33.9	2.3×
39	Addis Ababa Addis Ababa, Ethiopia	33.5	2.2×
40	Pratāpgarh Rajasthan, India	33.3	2.2×
41	Serilingampalle Telangana, India	33.1	2.2×
42	Ashaiman low-cost sensors Greater Accra, Ghana	31.9	2.1×
43	Nandri Rajasthan, India	31.6	2.1×
44	Ajmer Rajasthan, India	31.3	2.1×
45	Anantapur Andhra Pradesh, India	31.2	2.1×
46	Jincheng Fukien, Taiwan	30.8	2.1×
47	Tuxtla Chiapas, Mexico	30.6	2.0×
48	Richards Bay low-cost sensors KwaZulu-Natal, South Africa	30.5	2.0×
48	Hājīpur Bihar, India	30.5	2.0×
50	Hyderabad low-cost sensors Sindh, Pakistan	29.4	2.0×
51	Quetta low-cost sensors Balochistan, Pakistan	29.2	1.9×
52	Tema low-cost sensors Greater Accra, Ghana	29.1	1.9×
53	Muzaffarnagar Uttar Pradesh, India	28.6	1.9×
54	Peshawar low-cost sensors Khyber Pakhtunkhwa, Pakistan	27.9	1.9×
55	Kalyān Maharashtra, India	27.6	1.8×
56	Jhālāwār Rajasthan, India	27.5	1.8×
57	Tonk Rajasthan, India	27.3	1.8×
58	Patna Bihar, India	26.9	1.8×
59	Rājsamand Rajasthan, India	26.5	1.8×
60	Debrecen low-cost sensors Hajdú-Bihar, Hungary	26.0	1.7×
60	Saskatoon Saskatchewan, Canada	26.0	1.7×
62	Lagos low-cost sensors Lagos, Nigeria	25.8	1.7×
63	Nagaon Assam, India	25.7	1.7×
64	Kota Rajasthan, India	25.6	1.7×
65	Wadgaon Kolhati Maharashtra, India	25.5	1.7×
66	Begusarai Bihar, India	25.3	1.7×
67	Karachi low-cost sensors Sindh, Pakistan	25.2	1.7×
68	Dūngarpur Rajasthan, India	25.1	1.7×
69	Morādābād Uttar Pradesh, India	24.6	1.6×
70	Sirohi Rajasthan, India	24.5	1.6×
71	Ankleshwar Gujarat, India	24.4	1.6×
71	Bhiwadi Rajasthan, India	24.4	1.6×
73	Hyderabad Telangana, India	24.3	1.6×
73	Bhilwara Rajasthan, India	24.3	1.6×
75	Mangaluru Karnataka, India	23.7	1.6×
75	Lucknow Uttar Pradesh, India	23.7	1.6×
77	Nāgaur Rajasthan, India	22.8	1.5×
78	Silchar Assam, India	22.7	1.5×
79	Naucalpan de Juárez México, Mexico	22.4	1.5×
80	Gandhinagar Gujarat, India	22.3	1.5×
80	Boisar Maharashtra, India	22.3	1.5×
82	Kolkata West Bengal, India	22.1	1.5×
82	Vijayapura Karnataka, India	22.1	1.5×
84	Kharghar Maharashtra, India	22.0	1.5×
85	Jodhpur Rajasthan, India	21.8	1.5×
86	Wenatchee Washington, United States	21.5	1.4×
87	Nanded Maharashtra, India	21.4	1.4×
88	Kanpur Uttar Pradesh, India	21.3	1.4×
88	Jalor Rajasthan, India	21.3	1.4×
90	Jaisalmer Rajasthan, India	21.2	1.4×
90	Ahmedabad Gujarat, India	21.2	1.4×
92	Jalandhar Punjab, India	21.1	1.4×
93	Chennai Tamil Nadu, India	21.0	1.4×
94	Bhiwandi Maharashtra, India	20.8	1.4×
94	Gdynia Pomerania, Poland	20.8	1.4×
96	Łódź Łódź Voivodeship, Poland	20.7	1.4×
96	Kalisz Greater Poland, Poland	20.7	1.4×
98	Accra low-cost sensors Greater Accra, Ghana	20.6	1.4×
99	Great Falls Montana, United States	20.5	1.4×
100	Rawalpindi low-cost sensors Punjab, Pakistan	20.4	1.4×
100	Lahore low-cost sensors Punjab, Pakistan	20.4	1.4×
102	Dhule Maharashtra, India	20.1	1.3×
102	Yakima Washington, United States	20.1	1.3×
104	Iaşi Iași County, Romania	20.0	1.3×
104	Łask Łódź Voivodeship, Poland	20.0	1.3×
106	Būndi Rajasthan, India	19.8	1.3×
107	Żyrardów Mazovia, Poland	19.3	1.3×
107	Jalgaon Maharashtra, India	19.3	1.3×
107	Toruń Kujawsko-Pomorskie, Poland	19.3	1.3×
107	Corcoran California, United States	19.3	1.3×
111	Rairangpur Odisha, India	19.2	1.3×
112	Yuanlin Taiwan, Taiwan	19.1	1.3×
112	San Francisco Tlalcilalcalpan México, Mexico	19.1	1.3×
112	Baddi Himachal Pradesh, India	19.1	1.3×
115	Włocławek Kujawsko-Pomorskie, Poland	18.8	1.3×
116	Trebišov Košice Region, Slovakia	18.7	1.2×
116	Agra Uttar Pradesh, India	18.7	1.2×
116	Medina Estates low-cost sensors Greater Accra, Ghana	18.7	1.2×
116	Sunnyside Washington, United States	18.7	1.2×
120	Moscow Idaho, United States	18.5	1.2×
121	Spokane Washington, United States	18.4	1.2×
122	Zamość Lublin, Poland	18.3	1.2×
123	Nisko Subcarpathia, Poland	18.2	1.2×
123	Cholula Puebla, Mexico	18.2	1.2×
125	Visalia California, United States	18.1	1.2×
125	Bend Oregon, United States	18.1	1.2×
127	Kalaburagi Karnataka, India	18.0	1.2×
127	Chittorgarh Rajasthan, India	18.0	1.2×
127	Prince Albert Saskatchewan, Canada	18.0	1.2×
130	Poznań Greater Poland, Poland	17.9	1.2×
131	Perundurai Tamil Nadu, India	17.8	1.2×
132	Douliu Taiwan, Taiwan	17.7	1.2×
133	Nagpur Maharashtra, India	17.6	1.2×
134	Arrah Bihar, India	17.5	1.2×
134	Taichung Taiwan, Taiwan	17.5	1.2×
136	Jaipur Rajasthan, India	17.4	1.2×
137	Gwalior Madhya Pradesh, India	17.3	1.2×
137	San Salvador Tizatlalli México, Mexico	17.3	1.2×
139	Pune Maharashtra, India	17.2	1.1×
139	Sopot Pomerania, Poland	17.2	1.1×
141	Bārmer Rajasthan, India	17.1	1.1×
141	Gdańsk Pomerania, Poland	17.1	1.1×
143	Bardejov Prešov Region, Slovakia	17.0	1.1×
143	Gudalur Tamil Nadu, India	17.0	1.1×
143	Squamish British Columbia, Canada	17.0	1.1×
146	Snina Prešov Region, Slovakia	16.9	1.1×
146	Lublin Lublin, Poland	16.9	1.1×
148	Warsaw Mazovia, Poland	16.8	1.1×
148	Buzi Taiwan, Taiwan	16.8	1.1×
148	Xizhou Taiwan, Taiwan	16.8	1.1×
148	Kelowna British Columbia, Canada	16.8	1.1×
152	Radom Mazovia, Poland	16.7	1.1×
152	Ishinomaki Miyagi, Japan	16.7	1.1×
154	Nyíregyháza Szabolcs-Szatmár-Bereg, Hungary	16.6	1.1×
154	Otwock Mazovia, Poland	16.6	1.1×
154	Latur Maharashtra, India	16.6	1.1×
154	Bengaluru Karnataka, India	16.6	1.1×
154	Aurangabad Maharashtra, India	16.6	1.1×
154	Daxi Taiwan, Taiwan	16.6	1.1×
160	Neelankarai Tamil Nadu, India	16.5	1.1×
161	Spokane Valley Washington, United States	16.4	1.1×
162	Coimbatore Tamil Nadu, India	16.3	1.1×
162	Kraków Lesser Poland, Poland	16.3	1.1×
162	Ourense Galicia, Spain	16.3	1.1×
162	Hermiston Oregon, United States	16.3	1.1×
166	Vranov nad Topľou Prešov Region, Slovakia	16.2	1.1×
166	Humenné Prešov Region, Slovakia	16.2	1.1×
166	Nagai Yamagata, Japan	16.2	1.1×
169	Baripāda Odisha, India	16.1	1.1×
169	Inglewood-Finn Hill low-cost sensors Washington, United States	16.1	1.1×
171	Zhubei Taiwan, Taiwan	16.0	1.1×
171	Changhua Taiwan, Taiwan	16.0	1.1×
173	Kielce Świętokrzyskie, Poland	15.9	1.1×
173	Toufen Taiwan, Taiwan	15.9	1.1×
173	Sagae Yamagata, Japan	15.9	1.1×
176	Yerevan low-cost sensors Yerevan, Armenia	15.8	1.1×
176	Dausa Rajasthan, India	15.8	1.1×
176	Cártama Andalusia, Spain	15.8	1.1×
179	Cluj-Napoca Cluj County, Romania	15.7	1.0×
179	Indore Madhya Pradesh, India	15.7	1.0×
181	Medford Oregon, United States	15.6	1.0×
182	Rānīganj West Bengal, India	15.5	1.0×
182	Keonjhargarh Odisha, India	15.5	1.0×
182	Erlun Taiwan, Taiwan	15.5	1.0×
185	Siwān Bihar, India	15.4	1.0×
185	Bydgoszcz Kujawsko-Pomorskie, Poland	15.4	1.0×
185	Kamloops British Columbia, Canada	15.4	1.0×
188	Pruszków Mazovia, Poland	15.3	1.0×
188	Srinagar Jammu and Kashmir, India	15.3	1.0×
188	Jhunjhunūn Rajasthan, India	15.3	1.0×
188	Hanford California, United States	15.3	1.0×
192	Starachowice Świętokrzyskie, Poland	15.2	1.0×
192	Parbhani Maharashtra, India	15.2	1.0×
192	Mumbai Maharashtra, India	15.2	1.0×
192	Shulin Taipei, Taiwan	15.2	1.0×
192	Elbląg Warmia-Masuria, Poland	15.2	1.0×
197	Jabalpur Madhya Pradesh, India	15.1	1.0×
197	Coeur d'Alene Idaho, United States	15.1	1.0×
197	Lewiston Idaho, United States	15.1	1.0×
197	Cranbrook British Columbia, Canada	15.1	1.0×

Top 200 of 2,220 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