SmogRank / History / September 25, 2025

Most polluted cities on September 25, 2025

2,300 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	253.3	16.9×
2	Blantyre low-cost sensors Southern Region, Malawi	107.0	7.1×
3	Santa Catarina Nuevo León, Mexico	97.1	6.5×
4	Dushanbe Dushanbe, Tajikistan	91.6	6.1×
5	Undera Gujarat, India	91.3	6.1×
6	Cuddalore Tamil Nadu, India	89.3	6.0×
7	Gujranwala low-cost sensors Punjab, Pakistan	83.0	5.5×
8	Peshawar low-cost sensors Khyber Pakhtunkhwa, Pakistan	73.3	4.9×
9	Bānswāra Rajasthan, India	72.5	4.8×
10	Lucknow Uttar Pradesh, India	67.4	4.5×
11	Sialkot low-cost sensors Punjab, Pakistan	61.6	4.1×
11	Baddi Himachal Pradesh, India	61.6	4.1×
13	Lahore low-cost sensors Punjab, Pakistan	60.8	4.1×
14	Rājgīr Bihar, India	60.6	4.0×
15	Multan low-cost sensors Punjab, Pakistan	57.5	3.8×
16	Faisalabad low-cost sensors Punjab, Pakistan	56.1	3.7×
17	Karauli Rajasthan, India	55.8	3.7×
18	Gummidipundi Tamil Nadu, India	53.2	3.5×
19	Kanpur Uttar Pradesh, India	48.3	3.2×
20	Morādābād Uttar Pradesh, India	47.8	3.2×
21	Joda Odisha, India	47.4	3.2×
22	Hājīpur Bihar, India	46.2	3.1×
23	Wenatchee Washington, United States	46.1	3.1×
24	Serilingampalle Telangana, India	45.8	3.1×
25	Chandigarh Chandigarh, India	43.9	2.9×
26	Rourkela Odisha, India	43.2	2.9×
27	Dhaulpur Rajasthan, India	42.2	2.8×
28	Patna Bihar, India	41.6	2.8×
29	Hāpur Uttar Pradesh, India	41.3	2.8×
30	Rasapūdipalem Andhra Pradesh, India	41.2	2.7×
31	Rawalpindi low-cost sensors Punjab, Pakistan	41.1	2.7×
31	Agra Uttar Pradesh, India	41.1	2.7×
31	Greater Noida Uttar Pradesh, India	41.1	2.7×
34	Bhiwadi Rajasthan, India	40.5	2.7×
35	Muzaffarnagar Uttar Pradesh, India	40.3	2.7×
36	Narela Delhi, India	39.8	2.7×
37	Buxar Bihar, India	38.1	2.5×
38	Jalandhar Punjab, India	37.3	2.5×
39	Ghāziābād Uttar Pradesh, India	37.0	2.5×
40	Quetta low-cost sensors Balochistan, Pakistan	36.9	2.5×
41	Gwalior Madhya Pradesh, India	35.9	2.4×
42	Hyderabad low-cost sensors Sindh, Pakistan	35.5	2.4×
43	Bāghpat Uttar Pradesh, India	35.1	2.3×
44	Dādri Uttar Pradesh, India	34.7	2.3×
44	Quthbullapur Telangana, India	34.7	2.3×
46	Tuxtla Chiapas, Mexico	34.3	2.3×
47	Vapi Gujarat, India	34.0	2.3×
48	Islamabad low-cost sensors Islamabad, Pakistan	33.9	2.3×
49	Anantapur Andhra Pradesh, India	33.8	2.3×
50	Nagaon Assam, India	33.2	2.2×
51	Saugor Madhya Pradesh, India	33.1	2.2×
52	Raipur Chhattisgarh, India	32.9	2.2×
53	Sirohi Rajasthan, India	32.7	2.2×
54	Delhi Delhi, India	32.6	2.2×
55	Tonk Rajasthan, India	32.3	2.2×
55	Baripāda Odisha, India	32.3	2.2×
57	Karachi low-cost sensors Sindh, Pakistan	32.0	2.1×
57	Jalgaon Maharashtra, India	32.0	2.1×
59	Chāpra Bihar, India	31.6	2.1×
60	Guwahati Assam, India	31.2	2.1×
60	Noida Uttar Pradesh, India	31.2	2.1×
62	Nagpur Maharashtra, India	30.2	2.0×
63	Vereeniging low-cost sensors Gauteng, South Africa	29.9	2.0×
64	Aya Nagar Delhi, India	29.5	2.0×
65	Angul Odisha, India	29.4	2.0×
66	Aurangabad Maharashtra, India	28.4	1.9×
66	Ajmer Rajasthan, India	28.4	1.9×
68	Rairangpur Odisha, India	28.1	1.9×
69	Bahawalpur low-cost sensors Punjab, Pakistan	28.0	1.9×
69	Rānīganj West Bengal, India	28.0	1.9×
71	Kalyān Maharashtra, India	27.7	1.8×
72	Chānda Maharashtra, India	27.5	1.8×
73	Nashik Maharashtra, India	27.0	1.8×
74	Kharghar Maharashtra, India	26.9	1.8×
75	Parbhani Maharashtra, India	26.7	1.8×
75	Jabalpur Madhya Pradesh, India	26.7	1.8×
77	Bhubaneswar Odisha, India	26.6	1.8×
78	Chennai Tamil Nadu, India	26.4	1.8×
78	Wadgaon Kolhati Maharashtra, India	26.4	1.8×
80	Dūngarpur Rajasthan, India	25.9	1.7×
81	Bārān Rajasthan, India	25.8	1.7×
82	Panvel Maharashtra, India	25.6	1.7×
83	Porto low-cost sensors Porto, Portugal	25.5	1.7×
84	Bengaluru Karnataka, India	25.4	1.7×
85	Ankleshwar Gujarat, India	25.1	1.7×
86	Amravati Maharashtra, India	24.8	1.7×
87	Cuttack Odisha, India	24.7	1.6×
88	Bharatpur Rajasthan, India	24.6	1.6×
89	Āsansol West Bengal, India	24.5	1.6×
89	Fort McMurray Alberta, Canada	24.5	1.6×
91	Bhopal Madhya Pradesh, India	24.3	1.6×
92	Kolkata West Bengal, India	23.9	1.6×
92	Haldia West Bengal, India	23.9	1.6×
94	Addis Ababa Addis Ababa, Ethiopia	23.8	1.6×
95	Hyderabad Telangana, India	23.6	1.6×
96	Barbil Odisha, India	23.3	1.6×
97	Pratāpgarh Rajasthan, India	22.8	1.5×
97	Quezon City low-cost sensors National Capital Region, Philippines	22.8	1.5×
97	Irapuato Guanajuato, Mexico	22.8	1.5×
100	Jaipur Rajasthan, India	22.2	1.5×
100	Saltillo Coahuila, Mexico	22.2	1.5×
102	Bhāgalpur Bihar, India	22.1	1.5×
102	Coeur d'Alene Idaho, United States	22.1	1.5×
104	Najafgarh Delhi, India	22.0	1.5×
105	Sri Ganganagar Rajasthan, India	21.9	1.5×
106	Thāne Maharashtra, India	21.8	1.5×
106	Gandhinagar Gujarat, India	21.8	1.5×
108	Ahmedabad Gujarat, India	21.7	1.4×
109	Nalbāri Assam, India	21.6	1.4×
109	Dausa Rajasthan, India	21.6	1.4×
111	Sāngli Maharashtra, India	21.2	1.4×
112	Spokane Washington, United States	21.1	1.4×
113	Istanbul low-cost sensors Istanbul, Turkey	21.0	1.4×
113	Bhilwara Rajasthan, India	21.0	1.4×
113	Bhilai Chhattisgarh, India	21.0	1.4×
113	Spokane Valley Washington, United States	21.0	1.4×
117	Akola Maharashtra, India	20.7	1.4×
118	Yakima Washington, United States	20.5	1.4×
119	Silchar Assam, India	20.4	1.4×
120	Bhiwandi Maharashtra, India	20.3	1.4×
121	Shivamogga Karnataka, India	20.1	1.3×
122	Hanumāngarh Rajasthan, India	20.0	1.3×
123	Dubai low-cost sensors Dubai, United Arab Emirates	19.9	1.3×
123	Chittorgarh Rajasthan, India	19.9	1.3×
125	Changchun low-cost sensors Jilin, China	19.8	1.3×
126	San Luis de la Paz Guanajuato, Mexico	19.7	1.3×
127	Yellowknife low-cost sensors Northwest Territories, Canada	19.6	1.3×
128	Sawai Madhopur Rajasthan, India	19.3	1.3×
128	Iloilo low-cost sensors Western Visayas, Philippines	19.3	1.3×
130	Malegaon Maharashtra, India	19.1	1.3×
130	Mahād Maharashtra, India	19.1	1.3×
130	Jalor Rajasthan, India	19.1	1.3×
130	Cholula Puebla, Mexico	19.1	1.3×
134	Kalaburagi Karnataka, India	19.0	1.3×
134	Kathmandu low-cost sensors Bagmati Province, Nepal	19.0	1.3×
134	Royal Oak low-cost sensors Michigan, United States	19.0	1.3×
137	Patiāla Punjab, India	18.7	1.2×
138	Lagos low-cost sensors Lagos, Nigeria	18.4	1.2×
139	Obrenovac Central Serbia, Serbia	18.2	1.2×
140	Kota Rajasthan, India	18.1	1.2×
141	Kolhāpur Maharashtra, India	17.9	1.2×
142	Kumanovo Kumanovo, North Macedonia	17.8	1.2×
143	Siwān Bihar, India	17.7	1.2×
143	Prayagraj Uttar Pradesh, India	17.7	1.2×
145	Hubballi Karnataka, India	17.4	1.2×
146	Ashaiman low-cost sensors Greater Accra, Ghana	17.3	1.2×
146	Cuernavaca Morelos, Mexico	17.3	1.2×
146	Sunnyside Washington, United States	17.3	1.2×
149	Arrah Bihar, India	17.2	1.1×
149	Nandri Rajasthan, India	17.2	1.1×
151	Taguig low-cost sensors National Capital Region, Philippines	17.1	1.1×
152	Zagreb low-cost sensors Zagreb, Croatia	16.9	1.1×
152	Cranbrook British Columbia, Canada	16.9	1.1×
154	Pune Maharashtra, India	16.8	1.1×
154	Boisar Maharashtra, India	16.8	1.1×
156	Indore Madhya Pradesh, India	16.7	1.1×
156	Gudalur Tamil Nadu, India	16.7	1.1×
158	Tirupparangunram Tamil Nadu, India	16.5	1.1×
158	Sarajevo Federation of B&H, Bosnia and Herzegovina	16.5	1.1×
158	Amaravati Andhra Pradesh, India	16.5	1.1×
161	Mumbai Maharashtra, India	16.4	1.1×
162	Shrīrāmpur West Bengal, India	16.3	1.1×
162	Pimpri-Chinchwad Maharashtra, India	16.3	1.1×
164	Yerevan low-cost sensors Yerevan, Armenia	16.2	1.1×
165	Durg Chhattisgarh, India	16.1	1.1×
166	Ōtsuki Yamanashi, Japan	15.9	1.1×
167	Dhule Maharashtra, India	15.8	1.1×
168	Virār Maharashtra, India	15.6	1.0×
168	Bikaner Rajasthan, India	15.6	1.0×
168	Agartala Tripura, India	15.6	1.0×
168	Tema low-cost sensors Greater Accra, Ghana	15.6	1.0×
172	San Miguel de Allende Guanajuato, Mexico	15.5	1.0×
173	Gijón Asturias, Spain	15.4	1.0×
174	Naucalpan de Juárez México, Mexico	15.3	1.0×
175	Sīkar Rajasthan, India	15.2	1.0×
176	Fengshan Takao, Taiwan	15.0	1.0×
177	Wan Chai Wan Chai, Hong Kong	14.9	1.0×
177	Mixquiahuala de Juárez Hidalgo, Mexico	14.9	1.0×
179	Tijuana Baja California, Mexico	14.8	1.0×
179	San Salvador Tizatlalli México, Mexico	14.8	1.0×
181	Rājsamand Rajasthan, India	14.7	1.0×
182	Tetovo Tetovo, North Macedonia	14.5	1.0×
182	Pasadena low-cost sensors California, United States	14.5	1.0×
182	Swift Current Saskatchewan, Canada	14.5	1.0×
182	Byasanagar Odisha, India	14.5	1.0×
186	Bakersfield California, United States	14.4	1.0×
187	San Juan del Río Querétaro, Mexico	14.3	1.0×
188	Nanded Maharashtra, India	14.2	0.9×
188	Jodhpur Rajasthan, India	14.2	0.9×
188	García Nuevo León, Mexico	14.2	0.9×
188	Celaya Guanajuato, Mexico	14.2	0.9×
192	Smederevo Central Serbia, Serbia	14.0	0.9×
193	Buzi Taiwan, Taiwan	13.9	0.9×
193	Gyōda Saitama, Japan	13.9	0.9×
195	Jhunjhunūn Rajasthan, India	13.8	0.9×
196	Ilinden Ilinden, North Macedonia	13.7	0.9×
196	Taichung Taiwan, Taiwan	13.7	0.9×
196	Lugo Galicia, Spain	13.7	0.9×
196	Salamanca Guanajuato, Mexico	13.7	0.9×
200	Latur Maharashtra, India	13.6	0.9×

Top 200 of 2,300 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