SmogRank / History / December 2023

Most polluted cities, December 2023

1,889 cities ranked by their average PM2.5 over the 31 days; the worst was Lahore, Pakistan, at 279.4 µg/m³. A city needs measurements on 70% of the days to be ranked.

  1. 1Lahorelow-cost sensorsPunjab, Pakistan
    279.4
  2. 2DelhiDelhi, India
    207.3
  3. 3Dhakalow-cost sensorsDhaka Division, Bangladesh
    167.1
  4. 4Peshawarlow-cost sensorsKhyber Pakhtunkhwa, Pakistan
    157.7
  5. 5KolkataWest Bengal, India
    151.7
  6. 6N'DjamenaN’Djaména, Chad
    138.2
  7. 7SaltilloCoahuila, Mexico
    127.7
  8. 8Ulan BatorUlaanbaatar, Mongolia
    124.8
  9. 9Islamabadlow-cost sensorsIslamabad, Pakistan
    115.5
  10. 10SalorTashkent Region, Uzbekistan
    110.4
  11. 11Karachilow-cost sensorsSindh, Pakistan
    95.7
  12. 12Abujalow-cost sensorsFCT, Nigeria
    90.3
  13. 13Banja LukaSrpska, Bosnia and Herzegovina
    89.1
  14. 14SarajevoFederation of B&H, Bosnia and Herzegovina
    83.1
  15. 15HyderabadTelangana, India
    82.4
  16. 16MumbaiMaharashtra, India
    81.2
  17. 17DushanbeDushanbe, Tajikistan
    79.1
  18. 18Lagoslow-cost sensorsLagos, Nigeria
    76.9
  19. 19TetovoTetovo, North Macedonia
    76.5
  20. 20Kathmandulow-cost sensorsBagmati Province, Nepal
    66.0
  21. 21SkopjeGrad Skopje, North Macedonia
    63.8
  22. 22NišCentral Serbia, Serbia
    62.9
  23. 23KavadarciKavadarci, North Macedonia
    57.0
  24. 24Kampalalow-cost sensorsCentral Region, Uganda
    56.8
  25. 25VelesVeles, North Macedonia
    53.9
  26. 26ShenyangLiaoning, China
    53.0
  27. 27BitolaBitola, North Macedonia
    50.1
  28. 28Şabāḩ as SālimMubārak al Kabīr, Kuwait
    49.1
  29. 29ZapopanJalisco, Mexico
    47.8
  30. 30BeijingBeijing, China
    46.8
  31. 31Ciudad Benito JuárezNuevo León, Mexico
    46.6
  32. 32ManlleuCatalonia, Spain
    46.1
  33. 33CapannoriTuscany, Italy
    45.7
  34. 34Almatylow-cost sensorsAlmaty, Kazakhstan
    45.4
  35. 35IlindenIlinden, North Macedonia
    45.1
  36. 36JakartaJakarta, Indonesia
    45.0
  37. 37Victoria de DurangoDurango, Mexico
    43.5
  38. 38TlaquepaqueJalisco, Mexico
    43.0
  39. 39BelgradeCentral Serbia, Serbia
    42.2
  40. 40Chiang Mailow-cost sensorsChiang Mai, Thailand
    37.5
  41. 41VolosThessaly, Greece
    37.1
  42. 41MontemurloTuscany, Italy
    37.1
  43. 43Spišská Nová VesKošice Region, Slovakia
    36.5
  44. 44Bangkoklow-cost sensorsBangkok, Thailand
    36.2
  45. 45PristinaPristina, Kosovo
    36.0
  46. 46KochaniKochani, North Macedonia
    35.8
  47. 47DejCluj County, Romania
    35.7
  48. 48Haskovolow-cost sensorsHaskovo, Bulgaria
    35.4
  49. 49GuangzhouGuangdong, China
    34.8
  50. 50CholulaPuebla, Mexico
    32.8
  51. 51ThessaloníkiCentral Macedonia, Greece
    32.3
  52. 51BeneventoCampania, Italy
    32.3
  53. 53Bishkeklow-cost sensorsBishkek, Kyrgyzstan
    32.2
  54. 54AlessandriaPiedmont, Italy
    32.1
  55. 55KigaliKigali, Rwanda
    31.7
  56. 56TurinPiedmont, Italy
    31.5
  57. 57San Francisco TlalcilalcalpanMéxico, Mexico
    31.4
  58. 58YangonYangon, Myanmar
    30.9
  59. 59Tuen MunTuen Mun, Hong Kong
    30.8
  60. 60Wan ChaiWan Chai, Hong Kong
    30.4
  61. 61KazincbarcikaBorsod-Abaúj-Zemplén, Hungary
    30.2
  62. 62GrazStyria, Austria
    29.6
  63. 63Santa CatarinaNuevo León, Mexico
    29.3
  64. 64BohumínMoravian-Silesian Region, Czechia
    29.2
  65. 65MexicaliBaja California, Mexico
    28.8
  66. 66TolucaMéxico, Mexico
    28.6
  67. 67HavířovMoravian-Silesian Region, Czechia
    28.3
  68. 68Novi SadVojvodina, Serbia
    28.2
  69. 69MiskolcBorsod-Abaúj-Zemplén, Hungary
    27.6
  70. 69San Salvador TizatlalliMéxico, Mexico
    27.6
  71. 71BakuBaki, Azerbaijan
    27.2
  72. 71Botevgradlow-cost sensorsSofia, Bulgaria
    27.2
  73. 71PratoTuscany, Italy
    27.2
  74. 71Ciudad ApodacaNuevo León, Mexico
    27.2
  75. 75GuadalajaraJalisco, Mexico
    26.7
  76. 76OurenseGalicia, Spain
    26.4
  77. 77AthensAttica, Greece
    26.2
  78. 78Cluj-NapocaCluj County, Romania
    26.0
  79. 79Tin Shui WaiYuen Long, Hong Kong
    25.6
  80. 80BakersfieldCalifornia, United States
    25.5
  81. 81OstravaMoravian-Silesian Region, Czechia
    25.4
  82. 82HumennéPrešov Region, Slovakia
    25.2
  83. 83MurciaMurcia, Spain
    25.0
  84. 83Český TěšínMoravian-Silesian Region, Czechia
    25.0
  85. 85TijuanaBaja California, Mexico
    24.9
  86. 85Ciudad General EscobedoNuevo León, Mexico
    24.9
  87. 85HanfordCalifornia, United States
    24.9
  88. 88Frýdek-MístekMoravian-Silesian Region, Czechia
    24.8
  89. 88DěčínÚstí nad Labem Region, Czechia
    24.8
  90. 90LleidaCatalonia, Spain
    24.6
  91. 91ŽilinaŽilina Region, Slovakia
    24.4
  92. 92IaşiIași County, Romania
    24.3
  93. 92RužomberokŽilina Region, Slovakia
    24.3
  94. 94PátraWest Greece, Greece
    23.9
  95. 94Mong KokYau Tsim Mong District, Hong Kong
    23.9
  96. 94FresnoCalifornia, United States
    23.9
  97. 97MonterreyNuevo León, Mexico
    23.6
  98. 98SallanchesAuvergne-Rhône-Alpes, France
    23.4
  99. 99AlgiersAlgiers, Algeria
    23.1
  100. 100Addis AbabaAddis Ababa, Ethiopia
    22.9
  101. 101BailénAndalusia, Spain
    22.7
  102. 102PřerovOlomouc Region, Czechia
    22.4
  103. 102ArezzoTuscany, Italy
    22.4
  104. 102Ciudad JuárezChihuahua, Mexico
    22.4
  105. 105Tsuen WanTsuen Wan, Hong Kong
    22.3
  106. 105Tai PoTai Po, Hong Kong
    22.3
  107. 107Mollet del VallèsCatalonia, Spain
    22.2
  108. 107JesiThe Marches, Italy
    22.2
  109. 109Valašské MeziříčíZlín, Czechia
    22.1
  110. 109Cadereyta JiménezNuevo León, Mexico
    22.1
  111. 111VictoriaCentral and Western, Hong Kong
    22.0
  112. 112RuseRuse, Bulgaria
    21.9
  113. 112MartinŽilina Region, Slovakia
    21.9
  114. 112TřinecMoravian-Silesian Region, Czechia
    21.9
  115. 112OlomoucOlomouc Region, Czechia
    21.9
  116. 116OpavaMoravian-Silesian Region, Czechia
    21.8
  117. 116CelayaGuanajuato, Mexico
    21.8
  118. 118NyíregyházaSzabolcs-Szatmár-Bereg, Hungary
    21.7
  119. 118PrešovPrešov Region, Slovakia
    21.7
  120. 120JeddahMecca Region, Saudi Arabia
    21.6
  121. 120ValdemoroMadrid, Spain
    21.6
  122. 120ViareggioTuscany, Italy
    21.6
  123. 123VisaliaCalifornia, United States
    21.5
  124. 123BadgerAlaska, United States
    21.5
  125. 125KošiceKošice Region, Slovakia
    21.4
  126. 125Banská BystricaBanská Bystrica Region, Slovakia
    21.4
  127. 127ColomboWestern Province, Sri Lanka
    21.2
  128. 127Kwai ChungKwai Tsing District, Hong Kong
    21.2
  129. 127NaplesCampania, Italy
    21.2
  130. 130Sham Shui PoSham Shui Po District, Hong Kong
    21.1
  131. 130PrievidzaTrenčín Region, Slovakia
    21.1
  132. 130Falconara MarittimaThe Marches, Italy
    21.1
  133. 133ZvolenBanská Bystrica Region, Slovakia
    20.9
  134. 134PartizánskeTrenčín Region, Slovakia
    20.8
  135. 134StocktonCalifornia, United States
    20.8
  136. 136CraiovaDolj, Romania
    20.7
  137. 136Gabrovolow-cost sensorsGabrovo, Bulgaria
    20.7
  138. 138BerounCentral Bohemia, Czechia
    20.6
  139. 138ChihuahuaChihuahua, Mexico
    20.6
  140. 140San Martin Texmelucan de LabastidaPuebla, Mexico
    20.4
  141. 140MoreliaMichoacán, Mexico
    20.4
  142. 142WolfsbergCarinthia, Austria
    20.2
  143. 142PisaTuscany, Italy
    20.2
  144. 144Sau Mau PingKwun Tong District, Hong Kong
    20.1
  145. 145TepliceÚstí nad Labem Region, Czechia
    20.0
  146. 146Sha TinSha Tin, Hong Kong
    19.8
  147. 146VeracruzVeracruz, Mexico
    19.8
  148. 148Ceglie MessapicaApulia, Italy
    19.5
  149. 149PhoenixArizona, United States
    19.3
  150. 150ModestoCalifornia, United States
    19.2
  151. 151MonacoMunicipality of Monaco, Monaco
    19.1
  152. 152NogalesArizona, United States
    19.0
  153. 153FanlingNorth District, Hong Kong
    18.9
  154. 153Ústí nad LabemÚstí nad Labem Region, Czechia
    18.9
  155. 153FlorenceTuscany, Italy
    18.9
  156. 156TurlockCalifornia, United States
    18.8
  157. 157TrenčínTrenčín Region, Slovakia
    18.7
  158. 157HandlováTrenčín Region, Slovakia
    18.7
  159. 157ZlínZlín, Czechia
    18.7
  160. 160Vranov nad TopľouPrešov Region, Slovakia
    18.5
  161. 160SevillaAndalusia, Spain
    18.5
  162. 162AsprópyrgosAttica, Greece
    18.4
  163. 162MassaTuscany, Italy
    18.4
  164. 164GyőrGyőr-Moson-Sopron, Hungary
    18.3
  165. 164ŽideniceSouth Moravian, Czechia
    18.3
  166. 166TrentoTrentino-Alto Adige, Italy
    18.2
  167. 167LitvínovÚstí nad Labem Region, Czechia
    18.1
  168. 168BolzanoTrentino-Alto Adige, Italy
    18.0
  169. 169EsztergomKomárom-Esztergom, Hungary
    17.9
  170. 169ZnojmoSouth Moravian, Czechia
    17.9
  171. 169PardubicePardubice Region, Czechia
    17.9
  172. 169AnconaThe Marches, Italy
    17.9
  173. 173ComptonCalifornia, United States
    17.8
  174. 174TraunUpper Austria, Austria
    17.7
  175. 175Silao de la VictoriaGuanajuato, Mexico
    17.6
  176. 175IrapuatoGuanajuato, Mexico
    17.6
  177. 177GardanneProvence-Alpes-Côte d'Azur, France
    17.4
  178. 177AvignonProvence-Alpes-Côte d'Azur, France
    17.4
  179. 177MercedCalifornia, United States
    17.4
  180. 180PiraeusAttica, Greece
    17.3
  181. 180TrnavaTrnava Region, Slovakia
    17.3
  182. 182Mladá BoleslavCentral Bohemia, Czechia
    17.2
  183. 183AntananarivoAnalamanga, Madagascar
    17.1
  184. 183MaspalomasCanary Islands, Spain
    17.1
  185. 183PécsBaranya, Hungary
    17.1
  186. 183RoveretoTrentino-Alto Adige, Italy
    17.1
  187. 187CorcoranCalifornia, United States
    17.0
  188. 188Romans-sur-IsèreAuvergne-Rhône-Alpes, France
    16.9
  189. 188MillcreekUtah, United States
    16.9
  190. 190BucharestBucharest, Romania
    16.8
  191. 190AberdeenSouthern District, Hong Kong
    16.8
  192. 190Klagenfurt am WörtherseeCarinthia, Austria
    16.8
  193. 190ChikuseiIbaraki, Japan
    16.8
  194. 194Santa Cruz de TenerifeCanary Islands, Spain
    16.7
  195. 194PueblaPuebla, Mexico
    16.7
  196. 196BrnoSouth Moravian, Czechia
    16.6
  197. 196ClovisCalifornia, United States
    16.6
  198. 198CórdobaAndalusia, Spain
    16.5
  199. 199AnsfeldenUpper Austria, Austria
    16.4
  200. 199MeylanAuvergne-Rhône-Alpes, France
    16.4

Top 200 of 1,889 shown.

Good0–9.0
Moderate9.1–35.4
Sensitive groups35.5–55.4
Unhealthy55.5–125.4
Very unhealthy125.5–225.4
Hazardous225.5+