SmogRank / History / January 17, 2026

Most polluted cities on January 17, 2026

1,822 cities ranked by their average PM2.5 over the day. Each city's own local calendar day.

← January 16, 2026January 18, 2026 →
#City µg/m³× WHO
1Delhi Delhi, India
368.024.5×
2Sialkot low-cost sensors Punjab, Pakistan
302.020.1×
3Bahawalpur low-cost sensors Punjab, Pakistan
271.518.1×
4Gujranwala low-cost sensors Punjab, Pakistan
264.017.6×
5Peshawar low-cost sensors Khyber Pakhtunkhwa, Pakistan
259.517.3×
6Faisalabad low-cost sensors Punjab, Pakistan
254.016.9×
7Srinagar Jammu and Kashmir, India
231.015.4×
8Lahore low-cost sensors Punjab, Pakistan
228.015.2×
9Multan low-cost sensors Punjab, Pakistan
208.013.9×
10Hyderabad low-cost sensors Sindh, Pakistan
151.810.1×
11Rawalpindi low-cost sensors Punjab, Pakistan
133.08.9×
11Sarajevo Federation of B&H, Bosnia and Herzegovina
133.08.9×
13Târgu Mureş low-cost sensors Mureș County, Romania
115.07.7×
14Kathmandu low-cost sensors Bagmati Province, Nepal
104.06.9×
15Banja Luka Srpska, Bosnia and Herzegovina
91.76.1×
16Islamabad low-cost sensors Islamabad, Pakistan
88.45.9×
17Sighetu Marmaţiei Maramureş, Romania
84.15.6×
18Vientiane low-cost sensors Vientiane Prefecture, Laos
71.34.8×
19Żywiec Silesia, Poland
70.04.7×
20Dushanbe Dushanbe, Tajikistan
67.24.5×
21Skopje Grad Skopje, North Macedonia
64.74.3×
22Tarnów Lesser Poland, Poland
61.94.1×
22Kojomkul low-cost sensors Chuy Region, Kyrgyzstan
61.94.1×
24Chrang Chamreh Muoy low-cost sensors Phnom Penh, Cambodia
61.44.1×
25Bitola Bitola, North Macedonia
61.34.1×
26Ilinden Ilinden, North Macedonia
59.74.0×
27Kraków Lesser Poland, Poland
57.93.9×
28Opole Opole Voivodeship, Poland
57.63.8×
29Pljevlja Pljevlja, Montenegro
57.33.8×
30Khlong Luang low-cost sensors Pathum Thani, Thailand
57.03.8×
31Yerevan low-cost sensors Yerevan, Armenia
56.23.7×
32Suceava Suceava, Romania
56.13.7×
32Zagreb low-cost sensors Zagreb, Croatia
56.13.7×
34Iaşi Iași County, Romania
56.03.7×
35Dębica Subcarpathia, Poland
55.73.7×
35Lagos low-cost sensors Lagos, Nigeria
55.73.7×
37Bishkek low-cost sensors Bishkek, Kyrgyzstan
55.33.7×
38Lebedinovka low-cost sensors Chuy Region, Kyrgyzstan
53.63.6×
39Karachi low-cost sensors Sindh, Pakistan
52.93.5×
40Rzeszów Subcarpathia, Poland
52.53.5×
41Sai Mai low-cost sensors Bangkok, Thailand
52.23.5×
42Bijelo Polje Bijelo Polje, Montenegro
52.03.5×
43Gdańsk Pomerania, Poland
51.73.4×
44Tulare low-cost sensors California, United States
50.83.4×
45Phuntsholing low-cost sensors Chukha, Bhutan
50.63.4×
46Jastrzębie Zdrój Silesia, Poland
50.13.3×
47Wolfsberg Carinthia, Austria
48.93.3×
48Strumica Strumica, North Macedonia
48.83.3×
49Gorzów Wielkopolski Lubusz, Poland
48.53.2×
50Ohrid Ohrid, North Macedonia
47.83.2×
50Kłodzko Lower Silesia, Poland
47.83.2×
52Kalisz Greater Poland, Poland
47.33.2×
53Włocławek Kujawsko-Pomorskie, Poland
47.23.1×
54Kazincbarcika Borsod-Abaúj-Zemplén, Hungary
47.03.1×
54Podgorica Podgorica, Montenegro
47.03.1×
56Przemyśl Subcarpathia, Poland
46.63.1×
56Lilongwe low-cost sensors Central Region, Malawi
46.63.1×
58Kardítsa Thessaly, Greece
46.03.1×
59Czechowice-Dziedzice Silesia, Poland
45.53.0×
60Toruń Kujawsko-Pomorskie, Poland
45.43.0×
61Delano low-cost sensors California, United States
45.23.0×
62Voluntari Ilfov, Romania
44.83.0×
63Tema low-cost sensors Greater Accra, Ghana
44.63.0×
64Racibórz Silesia, Poland
44.12.9×
65Murree low-cost sensors Punjab, Pakistan
43.72.9×
66Ashaiman low-cost sensors Greater Accra, Ghana
43.32.9×
67Bang Pakong low-cost sensors Chachoengsao, Thailand
43.02.9×
68Poznań Greater Poland, Poland
42.72.8×
69Stodůlky low-cost sensors Prague, Czechia
42.62.8×
70Piteşti Arges, Romania
42.52.8×
70Jincheng Fukien, Taiwan
42.52.8×
72Nikšić Opština Nikšić, Montenegro
42.32.8×
73Elk Grove low-cost sensors California, United States
41.42.8×
74Kumanovo Kumanovo, North Macedonia
40.82.7×
75Veles Veles, North Macedonia
40.62.7×
75Winterthur low-cost sensors Zurich, Switzerland
40.62.7×
77Wrocław Lower Silesia, Poland
40.52.7×
78Ljubljana Ljubljana, Slovenia
40.32.7×
79Ventspils Ventspils, Latvia
40.02.7×
80Tríkala Thessaly, Greece
39.92.7×
80Říčany low-cost sensors Central Bohemia, Czechia
39.92.7×
82Bydgoszcz Kujawsko-Pomorskie, Poland
39.82.7×
83Graz Styria, Austria
39.52.6×
84Bangkok low-cost sensors Bangkok, Thailand
39.32.6×
85Buftea Ilfov, Romania
39.02.6×
86Brzeg Opole Voivodeship, Poland
38.72.6×
87Kavadarci Kavadarci, North Macedonia
38.42.6×
88Porto low-cost sensors Porto, Portugal
38.32.6×
89Medina Estates low-cost sensors Greater Accra, Ghana
38.22.5×
90Târgu Jiu Gorj County, Romania
38.12.5×
91Quetta low-cost sensors Balochistan, Pakistan
37.42.5×
92Jelenia Góra Lower Silesia, Poland
37.32.5×
93Volos Thessaly, Greece
37.22.5×
94Iloilo low-cost sensors Western Visayas, Philippines
37.12.5×
95Yongkang Taiwan, Taiwan
36.52.4×
95Mexicali Baja California, Mexico
36.52.4×
97Zgierz Łódź Voivodeship, Poland
36.42.4×
98Haarlem low-cost sensors North Holland, The Netherlands
36.32.4×
99Douliu Taiwan, Taiwan
35.82.4×
100Radomsko Łódź Voivodeship, Poland
35.62.4×
101Kędzierzyn-Koźle Opole Voivodeship, Poland
35.52.4×
102Debrecen low-cost sensors Hajdú-Bihar, Hungary
35.22.3×
103Changchun low-cost sensors Jilin, China
35.02.3×
104Erlun Taiwan, Taiwan
34.82.3×
105Florin low-cost sensors California, United States
34.72.3×
106Ptuj Urban Municipality of Ptuj, Slovenia
34.52.3×
107Xinying Taiwan, Taiwan
34.42.3×
108Elbląg Warmia-Masuria, Poland
34.32.3×
109Zamość Lublin, Poland
34.22.3×
109Maribor Urban Municipality of Maribor, Slovenia
34.22.3×
111Miskolc Borsod-Abaúj-Zemplén, Hungary
34.02.3×
112Lárisa Thessaly, Greece
33.92.3×
112Chiayi City Taiwan, Taiwan
33.92.3×
114Suwałki Podlasie, Poland
33.82.3×
115Eisenzicken Burgenland, Austria
33.72.2×
115Łask Łódź Voivodeship, Poland
33.72.2×
117Accra low-cost sensors Greater Accra, Ghana
33.62.2×
118Novo Mesto Urban Municipality of Novo Mesto, Slovenia
33.52.2×
119Mielec Subcarpathia, Poland
33.42.2×
119Żary Lubusz, Poland
33.42.2×
121Rēzekne Rēzekne, Latvia
33.22.2×
122Kurashiki Okayama, Japan
33.12.2×
123Żyrardów Mazovia, Poland
33.02.2×
123Otwock Mazovia, Poland
33.02.2×
123Kranj Urban Municipality of Kranj, Slovenia
33.02.2×
126Płock Mazovia, Poland
32.92.2×
127Klagenfurt am Wörthersee Carinthia, Austria
32.82.2×
128Copenhagen low-cost sensors Capital Region, Denmark
32.72.2×
129Starachowice Świętokrzyskie, Poland
32.52.2×
130Prilep Prilep, North Macedonia
32.32.2×
130Koper Urban Municipality of Koper, Slovenia
32.32.2×
132Asakuchi Okayama, Japan
32.12.1×
133Katowice Silesia, Poland
31.92.1×
134Onomichi Hiroshima, Japan
31.82.1×
135Tainan Taiwan, Taiwan
31.72.1×
136Kościerzyna Pomerania, Poland
31.52.1×
137Popeşti-Leordeni Ilfov, Romania
31.42.1×
138Tuen Mun Tuen Mun, Hong Kong
31.32.1×
138Łódź Łódź Voivodeship, Poland
31.32.1×
140Beigang Taiwan, Taiwan
31.22.1×
141Higashinozoe Hyōgo, Japan
30.92.1×
142Olsztyn Warmia-Masuria, Poland
30.82.1×
143Ziguinchor low-cost sensors Ziguinchor, Senegal
30.72.0×
144Chiang Mai low-cost sensors Chiang Mai, Thailand
30.22.0×
144Gyál Pest County, Hungary
30.22.0×
146Bakersfield California, United States
30.12.0×
147Manlleu Catalonia, Spain
29.92.0×
148Bucharest Bucharest, Romania
29.82.0×
148Radom Mazovia, Poland
29.82.0×
150Legionowo Mazovia, Poland
29.72.0×
150Zielona Góra Lubusz, Poland
29.72.0×
150Trbovlje Municipality of Trbovlje, Slovenia
29.72.0×
153Istanbul low-cost sensors Istanbul, Turkey
29.32.0×
153Akashi Hyōgo, Japan
29.32.0×
155Taibao Taiwan, Taiwan
29.21.9×
156San Martin Texmelucan de Labastida Puebla, Mexico
29.01.9×
157Wan Chai Wan Chai, Hong Kong
28.91.9×
157Onoda Yamaguchi, Japan
28.91.9×
157Szczecin West Pomerania, Poland
28.91.9×
160Yuanlin Taiwan, Taiwan
28.81.9×
160Kasaoka Okayama, Japan
28.81.9×
160Kakogawachō-honmachi Hyōgo, Japan
28.81.9×
160Schwedt (Oder) Brandenburg, Germany
28.81.9×
160Esztergom Komárom-Esztergom, Hungary
28.81.9×
160Ciudad Nezahualcoyotl México, Mexico
28.81.9×
166Modesto California, United States
28.71.9×
167Arden-Arcade California, United States
28.61.9×
168Sukuta low-cost sensors Western, Gambia
28.51.9×
169Ełk Warmia-Masuria, Poland
28.41.9×
170Fanling North District, Hong Kong
28.31.9×
170Sōja Okayama, Japan
28.31.9×
172Győr Győr-Moson-Sopron, Hungary
28.21.9×
172Celje Urban Municipality of Celje, Slovenia
28.21.9×
174Tamano Okayama, Japan
28.11.9×
174Narutochō-mitsuishi Tokushima, Japan
28.11.9×
174Kołobrzeg West Pomerania, Poland
28.11.9×
177Amagasaki Hyōgo, Japan
28.01.9×
178Stockton California, United States
27.81.9×
179Himeji Hyōgo, Japan
27.71.8×
179Fukuyama Hiroshima, Japan
27.71.8×
179Eisenhüttenstadt Brandenburg, Germany
27.71.8×
179La Providencia Siglo XXI Hidalgo, Mexico
27.71.8×
183Białystok Podlasie, Poland
27.61.8×
184Takamatsu Kagawa, Japan
27.41.8×
185Quezon City low-cost sensors National Capital Region, Philippines
27.31.8×
186Fresno California, United States
27.21.8×
187Jarosław Subcarpathia, Poland
27.11.8×
188Kan’onjichō Kagawa, Japan
27.01.8×
188Kariya Hyōgo, Japan
27.01.8×
190Okayama Okayama, Japan
26.91.8×
191Konstancin-Jeziorna Mazovia, Poland
26.81.8×
191Ciechanów Mazovia, Poland
26.81.8×
191Apizaco Tlaxcala, Mexico
26.81.8×
194Pruszków Mazovia, Poland
26.71.8×
195Hikari Yamaguchi, Japan
26.61.8×
196Tin Shui Wai Yuen Long, Hong Kong
26.51.8×
196Shimonoseki Yamaguchi, Japan
26.51.8×
196Ourense Galicia, Spain
26.51.8×
199Lublin Lublin, Poland
26.41.8×
199Zhushan Taiwan, Taiwan
26.41.8×

Top 200 of 1,822 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