SmogRank / History / January 18, 2025

Most polluted cities on January 18, 2025

2,171 cities ranked by their average PM2.5 over the day; the worst was Lahore, Pakistan, at 274.0 µg/m³. Each city's own local calendar day.

Bad-air episodes during January 18, 2025. All episodes.

← Lahore 274.0 µg/m³ 200 µg/m³15 WHO 24-hour guideline
Every city ranked for January 18, 2025, one column each, worst on the left and cleanest on the right; height is PM2.5 in µg/m³. Point at it to read a city; tap to open it.
  1. 1Lahorelow-cost sensorsPunjab, Pakistan
    39818.3×
  2. 2KolkataWest Bengal, India
    26812.9×
  3. 3Ulan BatorUlaanbaatar, Mongolia
    25512.0×
  4. 4Dhakalow-cost sensorsDhaka Division, Bangladesh
    25211.8×
  5. 5DelhiDelhi, India
    24111.1×
  6. 6Peshawarlow-cost sensorsKhyber Pakhtunkhwa, Pakistan
    22510.0×
  7. 7Kampalalow-cost sensorsCentral Region, Uganda
    2189.5×
  8. 8N'DjamenaN’Djaména, Chad
    2159.3×
  9. 9HanoiHanoi, Vietnam
    2008.3×
  10. 10HyderabadTelangana, India
    1957.9×
  11. 11Abujalow-cost sensorsFCT, Nigeria
    1917.5×
  12. 12Islamabadlow-cost sensorsIslamabad, Pakistan
    1846.8×
  13. 13MumbaiMaharashtra, India
    1826.6×
  14. 14KrotoszynGreater Poland, Poland
    1816.5×
  15. 15SarajevoFederation of B&H, Bosnia and Herzegovina
    1776.1×
  16. 16Karachilow-cost sensorsSindh, Pakistan
    1756.0×
  17. 17ŻywiecSilesia, Poland
    1735.8×
  18. 18LubańLower Silesia, Poland
    1695.4×
  19. 19Kathmandulow-cost sensorsBagmati Province, Nepal
    1675.3×
  20. 20DushanbeDushanbe, Tajikistan
    1665.1×
  21. 21Bielsko-BialaSilesia, Poland
    1624.8×
  22. 22ChennaiTamil Nadu, India
    1594.5×
  23. 23OpoleOpole Voivodeship, Poland
    1594.5×
  24. 25BrzegOpole Voivodeship, Poland
    1574.3×
  25. 26Jelenia GóraLower Silesia, Poland
    1564.2×
  26. 27ConakryConakry, Guinea
    1544.0×
  27. 28Bishkeklow-cost sensorsBishkek, Kyrgyzstan
    1523.8×
  28. 29ShanghaiShanghai, China
    1513.7×
  29. 29BeijingBeijing, China
    1513.7×
  30. 31Abidjanlow-cost sensorsAbidjan Autonomous District, Ivory Coast
    1493.7×
  31. 32BordeauxNew Aquitaine, France
    1463.6×
  32. 33Banja LukaSrpska, Bosnia and Herzegovina
    1453.6×
  33. 34DejCluj County, Romania
    1443.5×
  34. 35ŁaskŁódź Voivodeship, Poland
    1423.5×
  35. 36PubalGyeonggi-do, South Korea
    1423.5×
  36. 37Nong KhaemBangkok, Thailand
    1353.3×
  37. 38Botevgradlow-cost sensorsSofia, Bulgaria
    1343.3×
  38. 39Nong ChokBangkok, Thailand
    1323.2×
  39. 39Khlong Sam WaBangkok, Thailand
    1323.2×
  40. 41Icheon-siGyeonggi-do, South Korea
    1303.1×
  41. 42Skarżysko-KamiennaŚwiętokrzyskie, Poland
    1303.1×
  42. 43Dimitrovgradlow-cost sensorsHaskovo, Bulgaria
    1293.1×
  43. 44JungpyongNorth Chungcheong, South Korea
    1283.1×
  44. 45WrocławLower Silesia, Poland
    1273.1×
  45. 46YeongjuGyeongsangbuk-do, South Korea
    1273.1×
  46. 47Haskovolow-cost sensorsHaskovo, Bulgaria
    1273.1×
  47. 48ChungjuNorth Chungcheong, South Korea
    1253.0×
  48. 49GuangzhouGuangdong, China
    1253.0×
  49. 50Yangp'yŏngGyeonggi-do, South Korea
    1253.0×
  50. 51Lat KrabangBangkok, Thailand
    1253.0×
  51. 52BadgerAlaska, United States
    1243.0×
  52. 53YeojuGyeonggi-do, South Korea
    1243.0×
  53. 54KłodzkoLower Silesia, Poland
    1233.0×
  54. 55Istanbullow-cost sensorsIstanbul, Turkey
    1233.0×
  55. 55YeongdongNorth Chungcheong, South Korea
    1233.0×
  56. 57Lak SiBangkok, Thailand
    1233.0×
  57. 58Accralow-cost sensorsGreater Accra, Ghana
    1222.9×
  58. 59JasłoSubcarpathia, Poland
    1212.9×
  59. 60KielceŚwiętokrzyskie, Poland
    1202.9×
  60. 61KinzanChungcheongnam-do, South Korea
    1202.9×
  61. 61Kinshasalow-cost sensorsKinshasa, Democratic Republic of the Congo
    1202.9×
  62. 63Bueng KumBangkok, Thailand
    1192.9×
  63. 64GumiGyeongsangbuk-do, South Korea
    1192.8×
  64. 64Khan Na YaoBangkok, Thailand
    1192.8×
  65. 66MarignaneProvence-Alpes-Côte d'Azur, France
    1182.8×
  66. 67KoesanNorth Chungcheong, South Korea
    1182.8×
  67. 68Cheongju-siNorth Chungcheong, South Korea
    1172.8×
  68. 69KatowiceSilesia, Poland
    1172.8×
  69. 70Saphan SungBangkok, Thailand
    1172.8×
  70. 71Ban Samae DamBangkok, Thailand
    1162.8×
  71. 72CodleaBrașov County, Romania
    1152.7×
  72. 73SallanchesAuvergne-Rhône-Alpes, France
    1152.7×
  73. 73KrakówLesser Poland, Poland
    1152.7×
  74. 73Sai MaiBangkok, Thailand
    1152.7×
  75. 76Chinch'ŏnNorth Chungcheong, South Korea
    1142.7×
  76. 77ChuncheonGangwon-do, South Korea
    1142.7×
  77. 78BangkokBangkok, Thailand
    1132.7×
  78. 79Tuen MunTuen Mun, Hong Kong
    1122.7×
  79. 80ShenyangLiaoning, China
    1122.7×
  80. 81KigaliKigali, Rwanda
    1112.6×
  81. 82MiskolcBorsod-Abaúj-Zemplén, Hungary
    1102.6×
  82. 82LazarevacCentral Serbia, Serbia
    1102.6×
  83. 84Mueang NonthaburiNonthaburi, Thailand
    1092.6×
  84. 85MungyeongGyeongsangbuk-do, South Korea
    1082.6×
  85. 86Bang NaBangkok, Thailand
    1082.6×
  86. 87OkcheonNorth Chungcheong, South Korea
    1082.5×
  87. 87KaliszGreater Poland, Poland
    1082.5×
  88. 89TongyeongGyeongsangnam-do, South Korea
    1072.5×
  89. 90BaghdadBaghdad, Iraq
    1062.5×
  90. 91ChaozhouTaiwan, Taiwan
    1062.5×
  91. 91Romans-sur-IsèreAuvergne-Rhône-Alpes, France
    1062.5×
  92. 93Bang KapiBangkok, Thailand
    1062.5×
  93. 93SeonghwanChungcheongnam-do, South Korea
    1062.5×
  94. 95GunsanJeollabuk-do, South Korea
    1052.5×
  95. 96DębicaSubcarpathia, Poland
    1052.5×
  96. 97YangonYangon, Myanmar
    1052.5×
  97. 97RadomskoŁódź Voivodeship, Poland
    1052.5×
  98. 99ChinjuGyeongsangnam-do, South Korea
    1052.5×
  99. 99ŻaryLubusz, Poland
    1052.5×
  100. 101Wan ChaiWan Chai, Hong Kong
    1042.5×
  101. 102SremčicaCentral Serbia, Serbia
    1042.4×
  102. 102WŏnjuGangwon-do, South Korea
    1042.4×
  103. 102ToulouseOccitanie, France
    1042.4×
  104. 105Ban Khlong PrawetBangkok, Thailand
    1032.4×
  105. 105San Tung Chung HangIslands, Hong Kong
    1032.4×
  106. 105KimjeJeollabuk-do, South Korea
    1032.4×
  107. 108Kędzierzyn-KoźleOpole Voivodeship, Poland
    1032.4×
  108. 109BuanJeollabuk-do, South Korea
    1022.4×
  109. 109GrenobleAuvergne-Rhône-Alpes, France
    1022.4×
  110. 111GoseongGyeongsangnam-do, South Korea
    1022.4×
  111. 112YŏnmuChungcheongnam-do, South Korea
    1012.4×
  112. 112Medina Estateslow-cost sensorsGreater Accra, Ghana
    1012.4×
  113. 114FengshanTakao, Taiwan
    1012.4×
  114. 115SejongSejong-si, South Korea
    1012.4×
  115. 116KimhaeGyeongsangnam-do, South Korea
    1002.4×
  116. 117IksanJeollabuk-do, South Korea
    992.3×
  117. 118Mong KokYau Tsim Mong District, Hong Kong
    992.3×
  118. 119AndongGyeongsangbuk-do, South Korea
    992.3×
  119. 120ŁódźŁódź Voivodeship, Poland
    982.3×
  120. 121NyíregyházaSzabolcs-Szatmár-Bereg, Hungary
    982.3×
  121. 121TarnówLesser Poland, Poland
    982.3×
  122. 121HwadoGyeonggi-do, South Korea
    982.3×
  123. 124HayangGyeongsangbuk-do, South Korea
    982.3×
  124. 125ChiguayanteBiobio, Chile
    982.3×
  125. 126RužomberokŽilina Region, Slovakia
    972.3×
  126. 127Tin Shui WaiYuen Long, Hong Kong
    972.3×
  127. 127LormontNew Aquitaine, France
    972.3×
  128. 127VisaliaCalifornia, United States
    972.3×
  129. 130WaegwanGyeongsangbuk-do, South Korea
    972.2×
  130. 131Sevlievolow-cost sensorsGabrovo, Bulgaria
    972.2×
  131. 132SangjuGyeongsangbuk-do, South Korea
    962.2×
  132. 132FresnoCalifornia, United States
    962.2×
  133. 134GwangjuGyeonggi-do, South Korea
    962.2×
  134. 134MeylanAuvergne-Rhône-Alpes, France
    962.2×
  135. 136PyeongtaekGyeonggi-do, South Korea
    962.2×
  136. 137EisenGyeongsangbuk-do, South Korea
    962.2×
  137. 138KaohsiungTakao, Taiwan
    962.2×
  138. 138BusanBusan, South Korea
    962.2×
  139. 140Hongch’ŏnGangwon-do, South Korea
    952.2×
  140. 140KutnoŁódź Voivodeship, Poland
    952.2×
  141. 142ObrenovacCentral Serbia, Serbia
    952.2×
  142. 142BuyeoChungcheongnam-do, South Korea
    952.2×
  143. 144Czechowice-DziedziceSilesia, Poland
    952.2×
  144. 145TrenčínTrenčín Region, Slovakia
    942.2×
  145. 146Kwai ChungKwai Tsing District, Hong Kong
    932.1×
  146. 146YeonilGyeongsangbuk-do, South Korea
    932.1×
  147. 148AlbertvilleAuvergne-Rhône-Alpes, France
    932.1×
  148. 149Tsuen WanTsuen Wan, Hong Kong
    932.1×
  149. 149GimcheonGyeongsangbuk-do, South Korea
    932.1×
  150. 151DaeguDaegu, South Korea
    932.1×
  151. 151NaesŏGyeongsangnam-do, South Korea
    932.1×
  152. 153SalorTashkent Region, Uzbekistan
    922.1×
  153. 153WanjuJeollabuk-do, South Korea
    922.1×
  154. 153OsanGyeonggi-do, South Korea
    922.1×
  155. 153BottropNorth Rhine-Westphalia, Germany
    922.1×
  156. 157OtwockMazovia, Poland
    922.1×
  157. 158Salon-de-ProvenceProvence-Alpes-Côte d'Azur, France
    922.1×
  158. 159AnseongGyeonggi-do, South Korea
    922.1×
  159. 159ManlleuCatalonia, Spain
    922.1×
  160. 161YecheonGyeongsangbuk-do, South Korea
    922.1×
  161. 162Almatylow-cost sensorsAlmaty, Kazakhstan
    912.1×
  162. 162GijangBusan, South Korea
    912.1×
  163. 162ValenceAuvergne-Rhône-Alpes, France
    912.1×
  164. 165ArlesProvence-Alpes-Côte d'Azur, France
    912.0×
  165. 165Asunciónlow-cost sensorsAsuncion, Paraguay
    912.0×
  166. 167DoleBourgogne-Franche-Comté, France
    912.0×
  167. 168NeietsuGangwon-do, South Korea
    912.0×
  168. 168NonsanChungcheongnam-do, South Korea
    912.0×
  169. 170MiryangGyeongsangnam-do, South Korea
    902.0×
  170. 170HwawŏnDaegu, South Korea
    902.0×
  171. 170VenrayLimburg, The Netherlands
    902.0×
  172. 173Sham Shui PoSham Shui Po District, Hong Kong
    902.0×
  173. 174YangsanGyeongsangnam-do, South Korea
    902.0×
  174. 174UlsanUlsan, South Korea
    902.0×
  175. 174ChangwonGyeongsangnam-do, South Korea
    902.0×
  176. 174FutogVojvodina, Serbia
    902.0×
  177. 178NacimientoBiobio, Chile
    902.0×
  178. 179NamsaJeollabuk-do, South Korea
    902.0×
  179. 180KrosnoSubcarpathia, Poland
    892.0×
  180. 180SmederevoCentral Serbia, Serbia
    892.0×
  181. 182PančevoVojvodina, Serbia
    892.0×
  182. 182PoznańGreater Poland, Poland
    892.0×
  183. 184AtlixcoPuebla, Mexico
    892.0×
  184. 185GwangmyeongGyeonggi-do, South Korea
    892.0×
  185. 185RacibórzSilesia, Poland
    892.0×
  186. 187PohangGyeongsangbuk-do, South Korea
    892.0×
  187. 188Tai PoTai Po, Hong Kong
    881.9×
  188. 188VictoriaCentral and Western, Hong Kong
    881.9×
  189. 188KranjUrban Municipality of Kranj, Slovenia
    881.9×
  190. 191CeljeUrban Municipality of Celje, Slovenia
    881.9×
  191. 192Gyeongsan-siGyeongsangbuk-do, South Korea
    881.9×
  192. 192MontluçonAuvergne-Rhône-Alpes, France
    881.9×
  193. 192ChangnyeongGyeongsangnam-do, South Korea
    881.9×
  194. 195PrešovPrešov Region, Slovakia
    881.9×
  195. 195CheonanChungcheongnam-do, South Korea
    881.9×
  196. 197TrebišovKošice Region, Slovakia
    881.9×
  197. 197ZemunCentral Serbia, Serbia
    881.9×
  198. 197AsanChungcheongnam-do, South Korea
    881.9×
  199. 197Saint-ÉtienneAuvergne-Rhône-Alpes, France
    881.9×

Top 200 of 2,171 shown.

Good0–50
Moderate51–100
Sensitive groups101–150
Unhealthy151–200
Very unhealthy201–300
Hazardous301+

The US EPA's Air Quality Index for PM2.5 (2024 breakpoints). Show values as: µg/m³ · US AQI · India AQI · China AQI · European AQI · UK DAQI · Canada AQHI+. About the scales

Not covered: the government monitoring networks of China and Turkey, which publish no terms that let us reuse their readings. Most cities there are missing from this board, not clean. Why.

Use this board

SmogRank, most polluted cities, PM2.5, January 18, 2025, smogrank.com/history/2025-01-18 (accessed 2 Oct 2026).

Download top 10 (PNG)

You're welcome to reuse a single chart, image or figure with this citation and a link. Terms.