SmogRank / History / October 4, 2025

Most polluted cities on October 4, 2025

2,397 cities ranked by their average PM2.5 over the day. Each city's own local calendar day.

#	City	µg/m³	× WHO
1	Stodůlky low-cost sensors Prague, Czechia	345.1	23.0×
2	Lahore low-cost sensors Punjab, Pakistan	116.0	7.7×
3	Multan low-cost sensors Punjab, Pakistan	107.0	7.1×
4	Faisalabad low-cost sensors Punjab, Pakistan	102.0	6.8×
5	Bhiwadi Rajasthan, India	83.3	5.6×
6	Narela Delhi, India	79.4	5.3×
7	Karauli Rajasthan, India	77.9	5.2×
8	Noida Uttar Pradesh, India	75.3	5.0×
9	Dādri Uttar Pradesh, India	71.5	4.8×
10	Dushanbe Dushanbe, Tajikistan	68.4	4.6×
11	Delhi Delhi, India	68.3	4.6×
12	Greater Noida Uttar Pradesh, India	68.1	4.5×
13	Ghāziābād Uttar Pradesh, India	67.6	4.5×
14	Gummidipundi Tamil Nadu, India	62.4	4.2×
15	Gujranwala low-cost sensors Punjab, Pakistan	62.2	4.1×
16	Kampala low-cost sensors Central Region, Uganda	60.0	4.0×
17	Najafgarh Delhi, India	58.9	3.9×
18	Baddi Himachal Pradesh, India	58.4	3.9×
19	Bahawalpur low-cost sensors Punjab, Pakistan	58.0	3.9×
20	Hāpur Uttar Pradesh, India	57.8	3.9×
21	Hanumāngarh Rajasthan, India	57.3	3.8×
22	Peshawar low-cost sensors Khyber Pakhtunkhwa, Pakistan	56.3	3.8×
23	Aya Nagar Delhi, India	55.8	3.7×
24	Sialkot low-cost sensors Punjab, Pakistan	53.8	3.6×
25	Rawalpindi low-cost sensors Punjab, Pakistan	51.5	3.4×
26	Karnāl Haryana, India	51.1	3.4×
27	Tonk Rajasthan, India	50.8	3.4×
28	Rasapūdipalem Andhra Pradesh, India	49.9	3.3×
29	Faridabad Haryana, India	49.6	3.3×
30	Jaipur Rajasthan, India	46.0	3.1×
31	Kanchipuram Tamil Nadu, India	44.3	3.0×
32	Islamabad low-cost sensors Islamabad, Pakistan	42.8	2.9×
32	Serilingampalle Telangana, India	42.8	2.9×
34	Blantyre low-cost sensors Southern Region, Malawi	42.0	2.8×
35	Jalandhar Punjab, India	41.9	2.8×
36	Meerut Uttar Pradesh, India	41.8	2.8×
37	Tirupati Andhra Pradesh, India	40.5	2.7×
38	Dubai low-cost sensors Dubai, United Arab Emirates	39.6	2.6×
39	Rājgīr Bihar, India	39.1	2.6×
40	Muzaffarnagar Uttar Pradesh, India	38.9	2.6×
41	Vapi Gujarat, India	38.5	2.6×
42	Sri Ganganagar Rajasthan, India	38.1	2.5×
43	Chandigarh Chandigarh, India	37.6	2.5×
44	Sirsa Haryana, India	37.2	2.5×
45	Ariyalūr Tamil Nadu, India	36.6	2.4×
46	Hyderabad low-cost sensors Sindh, Pakistan	36.4	2.4×
47	Gūduvāncheri Tamil Nadu, India	36.3	2.4×
48	Mohali Punjab, India	36.0	2.4×
49	Morādābād Uttar Pradesh, India	35.2	2.3×
50	Coimbatore Tamil Nadu, India	34.4	2.3×
51	Nagaon Assam, India	33.6	2.2×
52	Kharghar Maharashtra, India	33.5	2.2×
53	Bānswāra Rajasthan, India	33.4	2.2×
54	Karur Tamil Nadu, India	33.3	2.2×
55	Shenyang Liaoning, China	33.2	2.2×
56	Xonacatlán México, Mexico	33.1	2.2×
57	Naucalpan de Juárez México, Mexico	32.7	2.2×
58	Nalbāri Assam, India	32.1	2.1×
59	Prokuplje Central Serbia, Serbia	31.4	2.1×
60	Cuttack Odisha, India	31.3	2.1×
61	Vijayawada Andhra Pradesh, India	31.0	2.1×
62	Bengaluru Karnataka, India	30.6	2.0×
63	Pirot Central Serbia, Serbia	30.4	2.0×
64	Singrauli Madhya Pradesh, India	30.3	2.0×
65	Ajmer Rajasthan, India	30.2	2.0×
66	Karachi low-cost sensors Sindh, Pakistan	30.1	2.0×
66	Bhopal Madhya Pradesh, India	30.1	2.0×
68	Santa Anita - Los Ficus Lima region, Peru	30.0	2.0×
69	Zaječar Central Serbia, Serbia	29.8	2.0×
69	Royal Oak low-cost sensors Michigan, United States	29.8	2.0×
71	Patiāla Punjab, India	29.0	1.9×
72	Krotoszyn Greater Poland, Poland	28.4	1.9×
73	Arāria Bihar, India	28.2	1.9×
73	Iloilo low-cost sensors Western Visayas, Philippines	28.2	1.9×
75	Joda Odisha, India	28.1	1.9×
76	Agra Uttar Pradesh, India	27.9	1.9×
77	Kadapa Andhra Pradesh, India	27.6	1.8×
78	Changchun low-cost sensors Jilin, China	27.4	1.8×
78	Łask Łódź Voivodeship, Poland	27.4	1.8×
80	Baripāda Odisha, India	27.1	1.8×
81	Yuanlin Taiwan, Taiwan	27.0	1.8×
82	Kalisz Greater Poland, Poland	26.9	1.8×
83	Jhunjhunūn Rajasthan, India	26.7	1.8×
84	Bharatpur Rajasthan, India	26.3	1.8×
84	Šabac Central Serbia, Serbia	26.3	1.8×
86	San Francisco Tlalcilalcalpan México, Mexico	26.2	1.7×
87	Srinagar Jammu and Kashmir, India	26.0	1.7×
88	Vranje Central Serbia, Serbia	25.9	1.7×
88	Kruševac Central Serbia, Serbia	25.9	1.7×
90	Kota Rajasthan, India	25.7	1.7×
91	Leskovac Central Serbia, Serbia	25.6	1.7×
92	Fengshan Takao, Taiwan	25.5	1.7×
92	Loznica Central Serbia, Serbia	25.5	1.7×
94	Silchar Assam, India	25.1	1.7×
95	Byasanagar Odisha, India	25.0	1.7×
96	Poznań Greater Poland, Poland	24.9	1.7×
97	Gwalior Madhya Pradesh, India	24.8	1.7×
98	Kalyān Maharashtra, India	24.7	1.6×
98	Badlapur Maharashtra, India	24.7	1.6×
100	Rourkela Odisha, India	24.6	1.6×
100	Kłodzko Lower Silesia, Poland	24.6	1.6×
100	San Salvador Tizatlalli México, Mexico	24.6	1.6×
103	Jīnd Haryana, India	24.5	1.6×
104	Tiruchirappalli Tamil Nadu, India	24.4	1.6×
104	Bangkok low-cost sensors Bangkok, Thailand	24.4	1.6×
104	Jastrzębie Zdrój Silesia, Poland	24.4	1.6×
107	Patna Bihar, India	24.0	1.6×
107	Erlun Taiwan, Taiwan	24.0	1.6×
107	Kutno Łódź Voivodeship, Poland	24.0	1.6×
110	Beigang Taiwan, Taiwan	23.9	1.6×
111	Quezon City low-cost sensors National Capital Region, Philippines	23.8	1.6×
112	Lima Lima Province, Peru	23.7	1.6×
113	Niš Central Serbia, Serbia	23.6	1.6×
113	Wadgaon Kolhati Maharashtra, India	23.6	1.6×
115	Sīkar Rajasthan, India	23.5	1.6×
116	Cuddalore Tamil Nadu, India	23.3	1.6×
116	Khlong Luang low-cost sensors Pathum Thani, Thailand	23.3	1.6×
116	Tainan Taiwan, Taiwan	23.3	1.6×
116	Burriana Valencia, Spain	23.3	1.6×
116	Mexico City Mexico City, Mexico	23.3	1.6×
121	Vereeniging low-cost sensors Gauteng, South Africa	23.0	1.5×
121	Aurangabad Maharashtra, India	23.0	1.5×
123	Panvel Maharashtra, India	22.9	1.5×
124	Almaty low-cost sensors Almaty, Kazakhstan	22.8	1.5×
124	Gdańsk Pomerania, Poland	22.8	1.5×
126	Nantou Taiwan, Taiwan	22.7	1.5×
127	Banja Luka Srpska, Bosnia and Herzegovina	22.6	1.5×
128	Istanbul low-cost sensors Istanbul, Turkey	22.5	1.5×
129	Sāngli Maharashtra, India	22.4	1.5×
129	Agartala Tripura, India	22.4	1.5×
129	Wrocław Lower Silesia, Poland	22.4	1.5×
132	Obrenovac Central Serbia, Serbia	22.2	1.5×
133	Quetta low-cost sensors Balochistan, Pakistan	22.1	1.5×
134	Chennai Tamil Nadu, India	22.0	1.5×
134	Vijayapura Karnataka, India	22.0	1.5×
134	Buzi Taiwan, Taiwan	22.0	1.5×
134	Pljevlja Pljevlja, Montenegro	22.0	1.5×
138	Taichung Taiwan, Taiwan	21.9	1.5×
139	Yerevan low-cost sensors Yerevan, Armenia	21.8	1.5×
139	Smederevo Central Serbia, Serbia	21.8	1.5×
139	Rānīganj West Bengal, India	21.8	1.5×
139	Yongkang Taiwan, Taiwan	21.8	1.5×
139	Gdynia Pomerania, Poland	21.8	1.5×
144	Bor Central Serbia, Serbia	21.7	1.4×
145	Jagodina Central Serbia, Serbia	21.6	1.4×
145	Nāgaur Rajasthan, India	21.6	1.4×
145	Dūngarpur Rajasthan, India	21.6	1.4×
145	Douliu Taiwan, Taiwan	21.6	1.4×
145	Sai Mai low-cost sensors Bangkok, Thailand	21.6	1.4×
150	Saugor Madhya Pradesh, India	21.5	1.4×
150	Chaozhou Taiwan, Taiwan	21.5	1.4×
152	Nashik Maharashtra, India	21.4	1.4×
152	Ahmedabad Gujarat, India	21.4	1.4×
154	Sawai Madhopur Rajasthan, India	21.3	1.4×
155	Ćuprija Central Serbia, Serbia	21.1	1.4×
155	Bydgoszcz Kujawsko-Pomorskie, Poland	21.1	1.4×
157	Pančevo Vojvodina, Serbia	21.0	1.4×
158	Hubballi Karnataka, India	20.9	1.4×
158	Hājīpur Bihar, India	20.9	1.4×
158	Taibao Taiwan, Taiwan	20.9	1.4×
161	Kaohsiung Takao, Taiwan	20.8	1.4×
161	Erlin Taiwan, Taiwan	20.8	1.4×
163	Changhua Taiwan, Taiwan	20.7	1.4×
163	Włocławek Kujawsko-Pomorskie, Poland	20.7	1.4×
163	Toruń Kujawsko-Pomorskie, Poland	20.7	1.4×
163	Wheaton low-cost sensors Illinois, United States	20.7	1.4×
167	Gudalur Tamil Nadu, India	20.6	1.4×
168	Kalaburagi Karnataka, India	20.5	1.4×
168	Akola Maharashtra, India	20.5	1.4×
168	Sopot Pomerania, Poland	20.5	1.4×
171	Łódź Łódź Voivodeship, Poland	20.4	1.4×
171	Sremska Mitrovica Vojvodina, Serbia	20.4	1.4×
173	Zemun Central Serbia, Serbia	20.3	1.4×
173	Dhule Maharashtra, India	20.3	1.4×
173	Zagreb low-cost sensors Zagreb, Croatia	20.3	1.4×
176	Otwock Mazovia, Poland	20.1	1.3×
176	Čačak Central Serbia, Serbia	20.1	1.3×
178	Hacienda Santa Fe Jalisco, Mexico	19.9	1.3×
179	Amravati Maharashtra, India	19.8	1.3×
179	Bang Pakong low-cost sensors Chachoengsao, Thailand	19.8	1.3×
179	Xinying Taiwan, Taiwan	19.8	1.3×
179	Říčany low-cost sensors Central Bohemia, Czechia	19.8	1.3×
179	Racibórz Silesia, Poland	19.8	1.3×
179	Barrie Ontario, Canada	19.8	1.3×
185	Callao Callao, Peru	19.7	1.3×
186	Nisko Subcarpathia, Poland	19.6	1.3×
186	Belgrade Central Serbia, Serbia	19.6	1.3×
186	Lleida Catalonia, Spain	19.6	1.3×
189	Nagpur Maharashtra, India	19.4	1.3×
189	Malacky Bratislava Region, Slovakia	19.4	1.3×
189	Brzeg Opole Voivodeship, Poland	19.4	1.3×
189	San Francisco De Borja Lima region, Peru	19.4	1.3×
193	Parbhani Maharashtra, India	19.3	1.3×
194	Salem Tamil Nadu, India	19.2	1.3×
194	Ropar Punjab, India	19.2	1.3×
196	Żyrardów Mazovia, Poland	19.1	1.3×
196	Saltillo Coahuila, Mexico	19.1	1.3×
198	Sremčica Central Serbia, Serbia	18.9	1.3×
198	Cholula Puebla, Mexico	18.9	1.3×
200	Kaunas Kaunas, Lithuania	18.8	1.3×

Top 200 of 2,397 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