SmogRank / History / September 21, 2025

Most polluted cities on September 21, 2025

2,325 cities ranked by their average PM2.5 over the day. Each city's own local calendar day.

← September 20, 2025September 22, 2025 →
#City µg/m³× WHO
1Calexico California, United States
252.916.9×
2Stodůlky low-cost sensors Prague, Czechia
112.47.5×
3Gujranwala low-cost sensors Punjab, Pakistan
81.85.5×
4Lahore low-cost sensors Punjab, Pakistan
73.44.9×
5Peshawar low-cost sensors Khyber Pakhtunkhwa, Pakistan
72.04.8×
6Gummidipundi Tamil Nadu, India
71.94.8×
7Sialkot low-cost sensors Punjab, Pakistan
70.84.7×
8Lucknow Uttar Pradesh, India
65.84.4×
9Joda Odisha, India
61.14.1×
10Faisalabad low-cost sensors Punjab, Pakistan
56.73.8×
11Cuddalore Tamil Nadu, India
56.33.8×
12Muzaffarnagar Uttar Pradesh, India
55.03.7×
13Multan low-cost sensors Punjab, Pakistan
53.33.6×
14Chittoor Andhra Pradesh, India
52.63.5×
15Tumkūr Karnataka, India
48.63.2×
16Kanpur Uttar Pradesh, India
47.03.1×
16Angul Odisha, India
47.03.1×
18Kolkata West Bengal, India
46.73.1×
19Baddi Himachal Pradesh, India
46.03.1×
20Tirupati Andhra Pradesh, India
45.73.0×
21Ghāziābād Uttar Pradesh, India
45.43.0×
22Rawalpindi low-cost sensors Punjab, Pakistan
44.53.0×
23Rānīganj West Bengal, India
44.43.0×
24Bhāgalpur Bihar, India
44.33.0×
25Bānswāra Rajasthan, India
44.22.9×
26Greater Noida Uttar Pradesh, India
43.92.9×
27Hāpur Uttar Pradesh, India
43.02.9×
27Bāghpat Uttar Pradesh, India
43.02.9×
29Rasapūdipalem Andhra Pradesh, India
42.92.9×
30Bhiwadi Rajasthan, India
42.32.8×
31Gwalior Madhya Pradesh, India
41.82.8×
32Meerut Uttar Pradesh, India
41.52.8×
33Hyderabad Telangana, India
41.32.8×
34Dushanbe Dushanbe, Tajikistan
41.02.7×
35Morādābād Uttar Pradesh, India
40.72.7×
36Baripāda Odisha, India
40.22.7×
37Serilingampalle Telangana, India
40.12.7×
38Vereeniging low-cost sensors Gauteng, South Africa
39.82.7×
38Saugor Madhya Pradesh, India
39.82.7×
38Ankleshwar Gujarat, India
39.82.7×
41Jalandhar Punjab, India
39.72.6×
42Durgapur West Bengal, India
39.52.6×
43Narela Delhi, India
39.02.6×
44Bharatpur Rajasthan, India
38.62.6×
44Anantapur Andhra Pradesh, India
38.62.6×
46Dādri Uttar Pradesh, India
38.52.6×
47Nikšić Opština Nikšić, Montenegro
38.42.6×
48Ropar Punjab, India
38.22.5×
49Bengaluru Karnataka, India
37.92.5×
50Buxar Bihar, India
37.82.5×
51Jaipur Rajasthan, India
37.72.5×
51Kadapa Andhra Pradesh, India
37.72.5×
53Tonk Rajasthan, India
37.62.5×
54Chandigarh Chandigarh, India
37.02.5×
55Blantyre low-cost sensors Southern Region, Malawi
36.12.4×
55Vapi Gujarat, India
36.12.4×
55Noida Uttar Pradesh, India
36.12.4×
58Delhi Delhi, India
35.82.4×
59Jalgaon Maharashtra, India
35.52.4×
60Patna Bihar, India
35.02.3×
61Shrīrāmpur West Bengal, India
34.82.3×
61Aya Nagar Delhi, India
34.82.3×
63Quetta low-cost sensors Balochistan, Pakistan
34.72.3×
64Bahawalpur low-cost sensors Punjab, Pakistan
34.32.3×
65Haldia West Bengal, India
33.62.2×
66Nagaon Assam, India
32.82.2×
67Dausa Rajasthan, India
32.52.2×
68Barbil Odisha, India
31.02.1×
69Āsansol West Bengal, India
30.62.0×
70Agüimes Canary Islands, Spain
29.82.0×
71Ingenio Canary Islands, Spain
29.72.0×
72Chittorgarh Rajasthan, India
29.62.0×
73Parbhani Maharashtra, India
29.42.0×
74Rourkela Odisha, India
29.11.9×
75Sirohi Rajasthan, India
28.71.9×
76Shakaskraal low-cost sensors KwaZulu-Natal, South Africa
28.61.9×
76Najafgarh Delhi, India
28.61.9×
78Pascagoula Mississippi, United States
28.31.9×
78Calgary Alberta, Canada
28.31.9×
80Gandhinagar Gujarat, India
27.91.9×
81Byasanagar Odisha, India
27.71.8×
82Mangaluru Karnataka, India
27.61.8×
82Hanumāngarh Rajasthan, India
27.61.8×
84Singrauli Madhya Pradesh, India
27.51.8×
85Nichelino Piedmont, Italy
27.31.8×
86Dubai low-cost sensors Dubai, United Arab Emirates
27.11.8×
87Nanded Maharashtra, India
26.91.8×
88Bhubaneswar Odisha, India
26.61.8×
89Nagpur Maharashtra, India
26.31.8×
89Jhunjhunūn Rajasthan, India
26.31.8×
91Prayagraj Uttar Pradesh, India
26.11.7×
91Agra Uttar Pradesh, India
26.11.7×
93Nashik Maharashtra, India
26.01.7×
94Aurangabad Maharashtra, India
25.51.7×
95Ajmer Rajasthan, India
25.21.7×
95Airdrie Alberta, Canada
25.21.7×
97Ahmedabad Gujarat, India
25.11.7×
97Lagos low-cost sensors Lagos, Nigeria
25.11.7×
99Silchar Assam, India
25.01.7×
99Maspalomas Canary Islands, Spain
25.01.7×
101Milan Lombardy, Italy
24.81.7×
102Coimbatore Tamil Nadu, India
24.61.6×
102Bhopal Madhya Pradesh, India
24.61.6×
104Boisar Maharashtra, India
24.51.6×
105Addis Ababa Addis Ababa, Ethiopia
24.11.6×
105Gaya Bihar, India
24.11.6×
105Badlapur Maharashtra, India
24.11.6×
108Patiāla Punjab, India
24.01.6×
109Nalbāri Assam, India
23.81.6×
110Chennai Tamil Nadu, India
23.71.6×
111Vigevano Lombardy, Italy
23.51.6×
112Shivamogga Karnataka, India
23.21.5×
113Changchun low-cost sensors Jilin, China
23.11.5×
114Ashaiman low-cost sensors Greater Accra, Ghana
23.01.5×
115Mohali Punjab, India
22.91.5×
116Karachi low-cost sensors Sindh, Pakistan
22.51.5×
117Wake Forest low-cost sensors North Carolina, United States
22.41.5×
118Vijayapura Karnataka, India
22.21.5×
119Jabalpur Madhya Pradesh, India
22.11.5×
120Rishīkesh Uttarakhand, India
22.01.5×
121Turin Piedmont, Italy
21.91.5×
122Novara Piedmont, Italy
21.71.4×
123Bhilwara Rajasthan, India
21.51.4×
124Kalyān Maharashtra, India
21.31.4×
125San Isidro Canary Islands, Spain
20.81.4×
125Porterville California, United States
20.81.4×
127Red Deer Alberta, Canada
20.71.4×
128Sawai Madhopur Rajasthan, India
20.51.4×
129Panvel Maharashtra, India
20.41.4×
130Kharghar Maharashtra, India
20.31.4×
131Sīkar Rajasthan, India
20.21.3×
132Amravati Maharashtra, India
20.01.3×
133Istanbul low-cost sensors Istanbul, Turkey
19.71.3×
133Bhiwandi Maharashtra, India
19.71.3×
133Bārān Rajasthan, India
19.71.3×
133Candelaria Canary Islands, Spain
19.71.3×
137San Salvador Tizatlalli México, Mexico
19.41.3×
138Akola Maharashtra, India
19.31.3×
138Santa Cruz de la Palma Canary Islands, Spain
19.31.3×
140Royal Oak low-cost sensors Michigan, United States
19.21.3×
141Jhālāwār Rajasthan, India
19.01.3×
142Santa Catarina Nuevo León, Mexico
18.91.3×
143Perundurai Tamil Nadu, India
18.81.3×
143Jaisalmer Rajasthan, India
18.81.3×
143Tema low-cost sensors Greater Accra, Ghana
18.81.3×
143Saskatoon Saskatchewan, Canada
18.81.3×
147Bhilai Chhattisgarh, India
18.71.2×
147Prince Albert Saskatchewan, Canada
18.71.2×
149Tirumala Andhra Pradesh, India
18.61.2×
149Hubballi Karnataka, India
18.61.2×
149Oconomowoc low-cost sensors Wisconsin, United States
18.61.2×
152Sri Ganganagar Rajasthan, India
18.51.2×
152Medicine Hat Alberta, Canada
18.51.2×
154Jalor Rajasthan, India
18.41.2×
155Bikaner Rajasthan, India
18.11.2×
156Gudalur Tamil Nadu, India
18.01.2×
157Arona Canary Islands, Spain
17.91.2×
157Cholula Puebla, Mexico
17.91.2×
159Tulare low-cost sensors California, United States
17.61.2×
159Edmonton Alberta, Canada
17.61.2×
161Fuenlabrada Madrid, Spain
17.51.2×
161Tijuana Baja California, Mexico
17.51.2×
163Rājsamand Rajasthan, India
17.41.2×
163Litvínov Ústí nad Labem Region, Czechia
17.41.2×
165Arrah Bihar, India
17.31.2×
166Siwān Bihar, India
17.21.1×
167Accra low-cost sensors Greater Accra, Ghana
16.91.1×
168Wan Chai Wan Chai, Hong Kong
16.81.1×
168García Nuevo León, Mexico
16.81.1×
168Carson low-cost sensors California, United States
16.81.1×
171Madikeri Karnataka, India
16.71.1×
171Cuernavaca Morelos, Mexico
16.71.1×
173Bartlett Tennessee, United States
16.61.1×
174Kolhāpur Maharashtra, India
16.51.1×
174Hawthorne low-cost sensors California, United States
16.51.1×
176Shillong Meghalaya, India
16.41.1×
176Kota Rajasthan, India
16.41.1×
176Fengshan Takao, Taiwan
16.41.1×
176Swift Current Saskatchewan, Canada
16.41.1×
180West Memphis Arkansas, United States
16.31.1×
180Hernando Mississippi, United States
16.31.1×
182Jodhpur Rajasthan, India
16.21.1×
182Strausberg Brandenburg, Germany
16.21.1×
184Kalaburagi Karnataka, India
16.11.1×
184Ferry Pass Florida, United States
16.11.1×
186Kathmandu low-cost sensors Bagmati Province, Nepal
16.01.1×
186Santa Lucía Canary Islands, Spain
16.01.1×
186Torrance low-cost sensors California, United States
16.01.1×
186Neelankarai Tamil Nadu, India
16.01.1×
186Nandri Rajasthan, India
16.01.1×
191Bārmer Rajasthan, India
15.91.1×
191Beroun Central Bohemia, Czechia
15.91.1×
191Bakersfield California, United States
15.91.1×
191Lethbridge Alberta, Canada
15.91.1×
195Tirupparangunram Tamil Nadu, India
15.81.1×
195Chāpra Bihar, India
15.81.1×
195Sarajevo Federation of B&H, Bosnia and Herzegovina
15.81.1×
198Manzanares Castille-La Mancha, Spain
15.71.0×
198Most Ústí nad Labem Region, Czechia
15.71.0×
200Montgomery Alabama, United States
15.61.0×

Top 200 of 2,325 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