SmogRank / History / January 7, 2025

Most polluted cities on January 7, 2025

2,267 cities ranked by their average PM2.5 over the day; the worst was Novi Pazar, Serbia, at 216.0 µg/m³. Each city's own local calendar day.

Bad-air episodes during January 7, 2025. All episodes.

← Novi Pazar 216.0 µg/m³ 200 µg/m³15 WHO 24-hour guideline
Every city ranked for January 7, 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. 1Novi PazarCentral Serbia, Serbia
    29114.4×
  2. 2NegotinCentral Serbia, Serbia
    27213.1×
  3. 3Dhakalow-cost sensorsDhaka Division, Bangladesh
    26512.7×
  4. 4KolkataWest Bengal, India
    24311.2×
  5. 5Lahorelow-cost sensorsPunjab, Pakistan
    24111.1×
  6. 6DushanbeDushanbe, Tajikistan
    24011.0×
  7. 7N'DjamenaN’Djaména, Chad
    23510.7×
  8. 8Kampalalow-cost sensorsCentral Region, Uganda
    22910.3×
  9. 9PirotCentral Serbia, Serbia
    2098.9×
  10. 10CodleaBrașov County, Romania
    1917.5×
  11. 10HanoiHanoi, Vietnam
    1917.5×
  12. 12ČačakCentral Serbia, Serbia
    1887.2×
  13. 13HyderabadTelangana, India
    1796.4×
  14. 15Karachilow-cost sensorsSindh, Pakistan
    1745.9×
  15. 16Peshawarlow-cost sensorsKhyber Pakhtunkhwa, Pakistan
    1745.9×
  16. 17Almatylow-cost sensorsAlmaty, Kazakhstan
    1725.7×
  17. 18Kinshasalow-cost sensorsKinshasa, Democratic Republic of the Congo
    1715.6×
  18. 19MumbaiMaharashtra, India
    1685.4×
  19. 20ChennaiTamil Nadu, India
    1675.2×
  20. 21Abidjanlow-cost sensorsAbidjan Autonomous District, Ivory Coast
    1655.1×
  21. 22Islamabadlow-cost sensorsIslamabad, Pakistan
    1624.8×
  22. 23ValjevoCentral Serbia, Serbia
    1594.5×
  23. 24DejCluj County, Romania
    1594.5×
  24. 25Kathmandulow-cost sensorsBagmati Province, Nepal
    1594.4×
  25. 26NišCentral Serbia, Serbia
    1584.4×
  26. 27Nong KhaemBangkok, Thailand
    1554.1×
  27. 28Khlong Sam WaBangkok, Thailand
    1544.0×
  28. 29Cluj-NapocaCluj County, Romania
    1544.0×
  29. 30LučenecBanská Bystrica Region, Slovakia
    1544.0×
  30. 31Lak SiBangkok, Thailand
    1543.9×
  31. 32CairoCairo, Egypt
    1533.9×
  32. 33KazincbarcikaBorsod-Abaúj-Zemplén, Hungary
    1533.9×
  33. 34GuangzhouGuangdong, China
    1533.9×
  34. 35BorCentral Serbia, Serbia
    1513.7×
  35. 36Khan Na YaoBangkok, Thailand
    1513.7×
  36. 37Bueng KumBangkok, Thailand
    1473.6×
  37. 38Nong ChokBangkok, Thailand
    1473.6×
  38. 39SofiaSofia-Capital, Bulgaria
    1433.5×
  39. 39Mueang NonthaburiNonthaburi, Thailand
    1433.5×
  40. 41Yerevanlow-cost sensorsYerevan, Armenia
    1423.5×
  41. 42Sai MaiBangkok, Thailand
    1423.5×
  42. 43Ban Samae DamBangkok, Thailand
    1403.4×
  43. 43Bang KapiBangkok, Thailand
    1403.4×
  44. 45Haskovolow-cost sensorsHaskovo, Bulgaria
    1393.4×
  45. 46BangkokBangkok, Thailand
    1373.3×
  46. 47Saphan SungBangkok, Thailand
    1363.3×
  47. 48Lat KrabangBangkok, Thailand
    1353.3×
  48. 49Ban Khlong PrawetBangkok, Thailand
    1353.3×
  49. 50BaghdadBaghdad, Iraq
    1343.2×
  50. 51FengshanTakao, Taiwan
    1333.2×
  51. 52KragujevacCentral Serbia, Serbia
    1323.2×
  52. 53YangonYangon, Myanmar
    1313.2×
  53. 54ShanghaiShanghai, China
    1283.1×
  54. 55Bang NaBangkok, Thailand
    1273.1×
  55. 56CraiovaDolj, Romania
    1263.1×
  56. 57Dimitrovgradlow-cost sensorsHaskovo, Bulgaria
    1263.0×
  57. 58RuseRuse, Bulgaria
    1253.0×
  58. 59KraljevoCentral Serbia, Serbia
    1233.0×
  59. 60Banja LukaSrpska, Bosnia and Herzegovina
    1162.8×
  60. 61KaohsiungTakao, Taiwan
    1142.7×
  61. 62DouliuTaiwan, Taiwan
    1132.7×
  62. 63ChaozhouTaiwan, Taiwan
    1112.6×
  63. 64KrakówLesser Poland, Poland
    1092.6×
  64. 65Sevlievolow-cost sensorsGabrovo, Bulgaria
    1082.5×
  65. 66AugustówPodlasie, Poland
    1072.5×
  66. 66ZvolenBanská Bystrica Region, Slovakia
    1072.5×
  67. 68Tuen MunTuen Mun, Hong Kong
    1032.4×
  68. 69KošiceKošice Region, Slovakia
    1022.4×
  69. 70JinchengFukien, Taiwan
    1002.4×
  70. 71YongkangTaiwan, Taiwan
    992.3×
  71. 72OtwockMazovia, Poland
    992.3×
  72. 73Wan ChaiWan Chai, Hong Kong
    982.3×
  73. 73OlomoucOlomouc Region, Czechia
    982.3×
  74. 75Tin Shui WaiYuen Long, Hong Kong
    962.2×
  75. 76Mong KokYau Tsim Mong District, Hong Kong
    952.2×
  76. 77DěčínÚstí nad Labem Region, Czechia
    952.2×
  77. 78ColomboWestern Province, Sri Lanka
    952.2×
  78. 79AthensAttica, Greece
    942.2×
  79. 80Chiayi CityTaiwan, Taiwan
    942.1×
  80. 81ZhushanTaiwan, Taiwan
    932.1×
  81. 82Skarżysko-KamiennaŚwiętokrzyskie, Poland
    932.1×
  82. 83Žiar nad HronomBanská Bystrica Region, Slovakia
    932.1×
  83. 84Asunciónlow-cost sensorsAsuncion, Paraguay
    922.1×
  84. 85PřerovOlomouc Region, Czechia
    922.1×
  85. 85Naucalpan de JuárezMéxico, Mexico
    922.1×
  86. 87XinyingTaiwan, Taiwan
    922.1×
  87. 88PiraeusAttica, Greece
    912.0×
  88. 88Addis AbabaAddis Ababa, Ethiopia
    912.0×
  89. 88Tai PoTai Po, Hong Kong
    912.0×
  90. 91ErlunTaiwan, Taiwan
    912.0×
  91. 92TainanTaiwan, Taiwan
    912.0×
  92. 92Ciudad NezahualcoyotlMéxico, Mexico
    912.0×
  93. 94BeigangTaiwan, Taiwan
    902.0×
  94. 95Istanbullow-cost sensorsIstanbul, Turkey
    892.0×
  95. 96PristinaPristina, Kosovo
    892.0×
  96. 97San Tung Chung HangIslands, Hong Kong
    892.0×
  97. 97ChiguayanteBiobio, Chile
    892.0×
  98. 99KielceŚwiętokrzyskie, Poland
    881.9×
  99. 99Sham Shui PoSham Shui Po District, Hong Kong
    881.9×
  100. 101Tsuen WanTsuen Wan, Hong Kong
    871.9×
  101. 102ThessaloníkiCentral Macedonia, Greece
    871.9×
  102. 102Banská BystricaBanská Bystrica Region, Slovakia
    871.9×
  103. 104AsprópyrgosAttica, Greece
    861.9×
  104. 104Santa Anita - Los FicusLima region, Peru
    861.9×
  105. 106Mexico CityMexico City, Mexico
    861.9×
  106. 107Kwai ChungKwai Tsing District, Hong Kong
    861.8×
  107. 107Silao de la VictoriaGuanajuato, Mexico
    861.8×
  108. 109KigaliKigali, Rwanda
    851.8×
  109. 109ZgierzŁódź Voivodeship, Poland
    851.8×
  110. 111PátraWest Greece, Greece
    851.8×
  111. 111IrapuatoGuanajuato, Mexico
    851.8×
  112. 113TaibaoTaiwan, Taiwan
    851.8×
  113. 115VictoriaCentral and Western, Hong Kong
    841.8×
  114. 116YuanlinTaiwan, Taiwan
    841.8×
  115. 116Sau Mau PingKwun Tong District, Hong Kong
    841.8×
  116. 116FanlingNorth District, Hong Kong
    841.8×
  117. 116PúchovTrenčín Region, Slovakia
    841.8×
  118. 116Ecatepec de MorelosMéxico, Mexico
    841.8×
  119. 121San Francisco TlalcilalcalpanMéxico, Mexico
    841.8×
  120. 122NacimientoBiobio, Chile
    831.8×
  121. 123IaşiIași County, Romania
    831.8×
  122. 124ErlinTaiwan, Taiwan
    831.8×
  123. 124SocorroTexas, United States
    831.8×
  124. 126AmmanAmman, Jordan
    831.7×
  125. 127BrnoSouth Moravian, Czechia
    821.7×
  126. 128Debrecenlow-cost sensorsHajdú-Bihar, Hungary
    821.7×
  127. 129AcharnésAttica, Greece
    821.7×
  128. 130Sunland ParkNew Mexico, United States
    821.7×
  129. 131Sha TinSha Tin, Hong Kong
    811.7×
  130. 132AntananarivoAnalamanga, Madagascar
    811.7×
  131. 133JeddahMecca Region, Saudi Arabia
    811.7×
  132. 134LancasterCalifornia, United States
    801.7×
  133. 135Quezon Citylow-cost sensorsNational Capital Region, Philippines
    801.7×
  134. 136León de los AldamaGuanajuato, Mexico
    801.6×
  135. 137KaunasKaunas, Lithuania
    801.6×
  136. 137NantouTaiwan, Taiwan
    801.6×
  137. 139SmederevoCentral Serbia, Serbia
    791.6×
  138. 141Jacobo HunterArequipa, Peru
    771.5×
  139. 142VisaliaCalifornia, United States
    771.5×
  140. 143PortervilleCalifornia, United States
    771.5×
  141. 144BucharestBucharest, Romania
    761.5×
  142. 144Gabrovolow-cost sensorsGabrovo, Bulgaria
    761.5×
  143. 146VilniusVilnius, Lithuania
    761.5×
  144. 147San Luis de la PazGuanajuato, Mexico
    751.5×
  145. 148WolfsbergCarinthia, Austria
    751.5×
  146. 149VarnaVarna, Bulgaria
    751.5×
  147. 150KatowiceSilesia, Poland
    741.4×
  148. 151WawerMazovia, Poland
    741.4×
  149. 151SuwałkiPodlasie, Poland
    741.4×
  150. 153ŽideniceSouth Moravian, Czechia
    741.4×
  151. 154BiałystokPodlasie, Poland
    741.4×
  152. 155TaichungTaiwan, Taiwan
    731.4×
  153. 156BuziTaiwan, Taiwan
    731.4×
  154. 156SantiagoSantiago Metropolitan, Chile
    731.4×
  155. 156San CarlosÑuble, Chile
    731.4×
  156. 159KoprivnicaKoprivnica-Križevci, Croatia
    731.4×
  157. 160TraunUpper Austria, Austria
    731.4×
  158. 161ChanghuaTaiwan, Taiwan
    731.4×
  159. 162MiskolcBorsod-Abaúj-Zemplén, Hungary
    721.4×
  160. 163RadomMazovia, Poland
    721.4×
  161. 163Arvadalow-cost sensorsColorado, United States
    721.4×
  162. 165PrešovPrešov Region, Slovakia
    721.4×
  163. 166GumiGyeongsangbuk-do, South Korea
    721.4×
  164. 167LinzUpper Austria, Austria
    721.3×
  165. 168KranjUrban Municipality of Kranj, Slovenia
    711.3×
  166. 168HelenaMontana, United States
    711.3×
  167. 170TocopillaAntofagasta, Chile
    711.3×
  168. 171ZnojmoSouth Moravian, Czechia
    711.3×
  169. 171San Miguel de AllendeGuanajuato, Mexico
    711.3×
  170. 173LublinLublin, Poland
    711.3×
  171. 173Konstancin-JeziornaMazovia, Poland
    711.3×
  172. 173MagongTaiwan, Taiwan
    711.3×
  173. 173PrievidzaTrenčín Region, Slovakia
    711.3×
  174. 177BakersfieldCalifornia, United States
    711.3×
  175. 178AnsfeldenUpper Austria, Austria
    711.3×
  176. 178LiberpolisCounty of Osijek-Baranja, Croatia
    711.3×
  177. 180XizhouTaiwan, Taiwan
    701.3×
  178. 180KoperUrban Municipality of Koper, Slovenia
    701.3×
  179. 182LegionowoMazovia, Poland
    701.3×
  180. 182PančevoVojvodina, Serbia
    701.3×
  181. 182BerounCentral Bohemia, Czechia
    701.3×
  182. 182Jastrzębie ZdrójSilesia, Poland
    701.3×
  183. 182CalamaAntofagasta, Chile
    701.3×
  184. 187TrebišovKošice Region, Slovakia
    691.3×
  185. 187SiedlceMazovia, Poland
    691.3×
  186. 187ZemunCentral Serbia, Serbia
    691.3×
  187. 187YeongjuGyeongsangbuk-do, South Korea
    691.3×
  188. 187CelayaGuanajuato, Mexico
    691.3×
  189. 187San Pedro de la PazBiobio, Chile
    691.3×
  190. 193NeiliTaiwan, Taiwan
    691.3×
  191. 193ZlínZlín, Czechia
    691.3×
  192. 195PruszkówMazovia, Poland
    691.3×
  193. 195FresnoCalifornia, United States
    691.3×
  194. 195Los AngelesCalifornia, United States
    691.3×
  195. 195EdmontonAlberta, Canada
    691.3×
  196. 199LazarevacCentral Serbia, Serbia
    691.2×
  197. 199HualquiBiobio, Chile
    691.2×

Top 200 of 2,267 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 7, 2025, smogrank.com/history/2025-01-07 (accessed 2 Oct 2026).

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