SmogRank / History / week of December 11, 2023

Most polluted cities, week of December 11, 2023

1,867 cities ranked by their average PM2.5 over the 7 days; the worst was Saltillo, Mexico, at 431.5 µg/m³. A city needs measurements on 70% of the days to be ranked.

  1. 1SaltilloCoahuila, Mexico
    431.5
  2. 2Lahorelow-cost sensorsPunjab, Pakistan
    295.7
  3. 3Peshawarlow-cost sensorsKhyber Pakhtunkhwa, Pakistan
    218.4
  4. 4Dhakalow-cost sensorsDhaka Division, Bangladesh
    213.1
  5. 5DelhiDelhi, India
    192.4
  6. 6N'DjamenaN’Djaména, Chad
    183.5
  7. 7KolkataWest Bengal, India
    178.7
  8. 8Islamabadlow-cost sensorsIslamabad, Pakistan
    110.6
  9. 9Karachilow-cost sensorsSindh, Pakistan
    109.1
  10. 10SalorTashkent Region, Uzbekistan
    101.9
  11. 11Lagoslow-cost sensorsLagos, Nigeria
    97.5
  12. 12Abujalow-cost sensorsFCT, Nigeria
    87.4
  13. 13Almatylow-cost sensorsAlmaty, Kazakhstan
    77.5
  14. 14Ulan BatorUlaanbaatar, Mongolia
    76.1
  15. 15HyderabadTelangana, India
    74.6
  16. 16CairoCairo, Egypt
    74.2
  17. 17Bishkeklow-cost sensorsBishkek, Kyrgyzstan
    74.1
  18. 18Banja LukaSrpska, Bosnia and Herzegovina
    73.1
  19. 19DushanbeDushanbe, Tajikistan
    70.6
  20. 20SarajevoFederation of B&H, Bosnia and Herzegovina
    70.1
  21. 21Victoria de DurangoDurango, Mexico
    62.2
  22. 22MumbaiMaharashtra, India
    62.0
  23. 23TetovoTetovo, North Macedonia
    61.1
  24. 24Kathmandulow-cost sensorsBagmati Province, Nepal
    58.3
  25. 25Kampalalow-cost sensorsCentral Region, Uganda
    53.4
  26. 26ChennaiTamil Nadu, India
    51.3
  27. 27JakartaJakarta, Indonesia
    51.2
  28. 28KavadarciKavadarci, North Macedonia
    49.9
  29. 29NišCentral Serbia, Serbia
    47.0
  30. 30TlaquepaqueJalisco, Mexico
    46.3
  31. 31HanfordCalifornia, United States
    44.0
  32. 32BeijingBeijing, China
    43.3
  33. 33Bangkoklow-cost sensorsBangkok, Thailand
    43.2
  34. 34SkopjeGrad Skopje, North Macedonia
    42.7
  35. 35ManlleuCatalonia, Spain
    42.5
  36. 36Santa Cruz de TenerifeCanary Islands, Spain
    41.1
  37. 37BakersfieldCalifornia, United States
    40.9
  38. 38Chiang Mailow-cost sensorsChiang Mai, Thailand
    40.8
  39. 39BakuBaki, Azerbaijan
    40.7
  40. 39Haskovolow-cost sensorsHaskovo, Bulgaria
    40.7
  41. 41HanoiHanoi, Vietnam
    40.5
  42. 42Las Palmas de Gran CanariaCanary Islands, Spain
    40.4
  43. 43ArrecifeCanary Islands, Spain
    39.7
  44. 44BitolaBitola, North Macedonia
    39.5
  45. 44Ciudad Benito JuárezNuevo León, Mexico
    39.5
  46. 46KochaniKochani, North Macedonia
    38.6
  47. 46FresnoCalifornia, United States
    38.6
  48. 48MaspalomasCanary Islands, Spain
    36.9
  49. 49VisaliaCalifornia, United States
    36.5
  50. 50Granadilla de AbonaCanary Islands, Spain
    36.3
  51. 51MiskolcBorsod-Abaúj-Zemplén, Hungary
    35.7
  52. 52KazincbarcikaBorsod-Abaúj-Zemplén, Hungary
    35.5
  53. 53La OrotavaCanary Islands, Spain
    35.2
  54. 54Spišská Nová VesKošice Region, Slovakia
    34.8
  55. 54IlindenIlinden, North Macedonia
    34.8
  56. 54AgüimesCanary Islands, Spain
    34.8
  57. 57TurinPiedmont, Italy
    34.4
  58. 58GrazStyria, Austria
    34.3
  59. 59VelesVeles, North Macedonia
    34.1
  60. 60ShenyangLiaoning, China
    33.2
  61. 61ModestoCalifornia, United States
    33.1
  62. 62YangonYangon, Myanmar
    32.9
  63. 63StocktonCalifornia, United States
    32.5
  64. 64GuangzhouGuangdong, China
    32.4
  65. 65DejCluj County, Romania
    32.3
  66. 66San IsidroCanary Islands, Spain
    32.2
  67. 67BelgradeCentral Serbia, Serbia
    31.3
  68. 67TeldeCanary Islands, Spain
    31.3
  69. 69IngenioCanary Islands, Spain
    31.0
  70. 70ŽilinaŽilina Region, Slovakia
    30.9
  71. 71AlessandriaPiedmont, Italy
    30.7
  72. 72CandelariaCanary Islands, Spain
    30.3
  73. 73ThessaloníkiCentral Macedonia, Greece
    29.9
  74. 73TurlockCalifornia, United States
    29.9
  75. 75ArucasCanary Islands, Spain
    29.8
  76. 75CholulaPuebla, Mexico
    29.8
  77. 77TolucaMéxico, Mexico
    29.2
  78. 78CapannoriTuscany, Italy
    29.1
  79. 79San Francisco TlalcilalcalpanMéxico, Mexico
    28.8
  80. 80KigaliKigali, Rwanda
    28.3
  81. 81ZapopanJalisco, Mexico
    28.1
  82. 82MexicaliBaja California, Mexico
    27.8
  83. 83AronaCanary Islands, Spain
    26.7
  84. 84Banská BystricaBanská Bystrica Region, Slovakia
    26.4
  85. 84MantecaCalifornia, United States
    26.4
  86. 86BorgomaneroPiedmont, Italy
    25.7
  87. 87PrievidzaTrenčín Region, Slovakia
    25.6
  88. 88MercedCalifornia, United States
    25.4
  89. 89Wan ChaiWan Chai, Hong Kong
    25.1
  90. 89Santa Cruz de la PalmaCanary Islands, Spain
    25.1
  91. 91AvignonProvence-Alpes-Côte d'Azur, France
    24.9
  92. 91AltamontOregon, United States
    24.9
  93. 91Arden-ArcadeCalifornia, United States
    24.9
  94. 94Santa CatarinaNuevo León, Mexico
    24.8
  95. 95PartizánskeTrenčín Region, Slovakia
    24.7
  96. 96Puerto del RosarioCanary Islands, Spain
    24.5
  97. 96MartinŽilina Region, Slovakia
    24.5
  98. 98RuseRuse, Bulgaria
    24.4
  99. 99Ciudad JuárezChihuahua, Mexico
    24.2
  100. 100MoreliaMichoacán, Mexico
    24.1
  101. 101ClovisCalifornia, United States
    23.9
  102. 102Addis AbabaAddis Ababa, Ethiopia
    23.8
  103. 103AthensAttica, Greece
    23.3
  104. 103ZvolenBanská Bystrica Region, Slovakia
    23.3
  105. 103Novi SadVojvodina, Serbia
    23.3
  106. 106JesiThe Marches, Italy
    23.2
  107. 107KošiceKošice Region, Slovakia
    23.0
  108. 108Falconara MarittimaThe Marches, Italy
    22.7
  109. 109HumennéPrešov Region, Slovakia
    22.6
  110. 109ColomboWestern Province, Sri Lanka
    22.6
  111. 109TijuanaBaja California, Mexico
    22.6
  112. 112ChihuahuaChihuahua, Mexico
    22.2
  113. 113HandlováTrenčín Region, Slovakia
    22.1
  114. 114GuadalajaraJalisco, Mexico
    22.0
  115. 114MaderaCalifornia, United States
    22.0
  116. 116Cluj-NapocaCluj County, Romania
    21.8
  117. 117MillcreekUtah, United States
    21.7
  118. 118PrešovPrešov Region, Slovakia
    21.6
  119. 118TrenčínTrenčín Region, Slovakia
    21.6
  120. 120NyíregyházaSzabolcs-Szatmár-Bereg, Hungary
    21.4
  121. 120SallanchesAuvergne-Rhône-Alpes, France
    21.4
  122. 120Ciudad General EscobedoNuevo León, Mexico
    21.4
  123. 123PhoenixArizona, United States
    21.3
  124. 123PortervilleCalifornia, United States
    21.3
  125. 125Ciudad ApodacaNuevo León, Mexico
    21.2
  126. 126NogalesArizona, United States
    21.1
  127. 127AntananarivoAnalamanga, Madagascar
    21.0
  128. 128RužomberokŽilina Region, Slovakia
    20.9
  129. 129Gabrovolow-cost sensorsGabrovo, Bulgaria
    20.8
  130. 130MontemurloTuscany, Italy
    20.7
  131. 131ArlesProvence-Alpes-Côte d'Azur, France
    20.6
  132. 131MonterreyNuevo León, Mexico
    20.6
  133. 133PátraWest Greece, Greece
    20.5
  134. 134ChicoCalifornia, United States
    20.3
  135. 135AnconaThe Marches, Italy
    20.2
  136. 136SacramentoCalifornia, United States
    20.0
  137. 137Sainte-Geneviève-des-BoisÎle-de-France, France
    19.9
  138. 138GardanneProvence-Alpes-Côte d'Azur, France
    19.7
  139. 138West JordanUtah, United States
    19.7
  140. 140Valašské MeziříčíZlín, Czechia
    19.6
  141. 140San JoseCalifornia, United States
    19.6
  142. 142TrnavaTrnava Region, Slovakia
    19.3
  143. 143MedfordOregon, United States
    19.2
  144. 144DěčínÚstí nad Labem Region, Czechia
    19.1
  145. 144BohumínMoravian-Silesian Region, Czechia
    19.1
  146. 144Yuba CityCalifornia, United States
    19.1
  147. 147Fos-sur-MerProvence-Alpes-Côte d'Azur, France
    18.7
  148. 147Žiar nad HronomBanská Bystrica Region, Slovakia
    18.7
  149. 149OstravaMoravian-Silesian Region, Czechia
    18.6
  150. 149Redwood CityCalifornia, United States
    18.6
  151. 151MonacoMunicipality of Monaco, Monaco
    18.3
  152. 152EsztergomKomárom-Esztergom, Hungary
    18.2
  153. 152HavířovMoravian-Silesian Region, Czechia
    18.2
  154. 152Frýdek-MístekMoravian-Silesian Region, Czechia
    18.2
  155. 152LleidaCatalonia, Spain
    18.2
  156. 156Tuen MunTuen Mun, Hong Kong
    18.1
  157. 156Mong KokYau Tsim Mong District, Hong Kong
    18.1
  158. 156PřerovOlomouc Region, Czechia
    18.1
  159. 159BogotáBogota D.C., Colombia
    17.9
  160. 160Český TěšínMoravian-Silesian Region, Czechia
    17.8
  161. 161Salt Lake CityUtah, United States
    17.6
  162. 162AsprópyrgosAttica, Greece
    17.5
  163. 162IaşiIași County, Romania
    17.5
  164. 162TracyCalifornia, United States
    17.5
  165. 165Vranov nad TopľouPrešov Region, Slovakia
    17.4
  166. 166OlomoucOlomouc Region, Czechia
    17.3
  167. 166Tepeji del Río de OcampoHidalgo, Mexico
    17.3
  168. 168CraiovaDolj, Romania
    17.2
  169. 168VitrollesProvence-Alpes-Côte d'Azur, France
    17.2
  170. 168GyőrGyőr-Moson-Sopron, Hungary
    17.2
  171. 171CelayaGuanajuato, Mexico
    17.1
  172. 172JeddahMecca Region, Saudi Arabia
    17.0
  173. 172ButteMontana, United States
    17.0
  174. 174BailénAndalusia, Spain
    16.9
  175. 175TřinecMoravian-Silesian Region, Czechia
    16.8
  176. 176MurciaMurcia, Spain
    16.7
  177. 177PiraeusAttica, Greece
    16.5
  178. 177Tai PoTai Po, Hong Kong
    16.5
  179. 177OaklandCalifornia, United States
    16.5
  180. 180Botevgradlow-cost sensorsSofia, Bulgaria
    16.4
  181. 181WolfsbergCarinthia, Austria
    16.3
  182. 181VeracruzVeracruz, Mexico
    16.3
  183. 181CuernavacaMorelos, Mexico
    16.3
  184. 181ReddingCalifornia, United States
    16.3
  185. 185LivermoreCalifornia, United States
    16.2
  186. 186NitraNitra Region, Slovakia
    16.1
  187. 186ViareggioTuscany, Italy
    16.1
  188. 188PécsBaranya, Hungary
    16.0
  189. 188Cadereyta JiménezNuevo León, Mexico
    16.0
  190. 190DunaújvárosFejér, Hungary
    15.9
  191. 190Ceglie MessapicaApulia, Italy
    15.9
  192. 192BeneventoCampania, Italy
    15.8
  193. 192PleasantonCalifornia, United States
    15.8
  194. 194VictoriaCentral and Western, Hong Kong
    15.6
  195. 194ParedesPorto, Portugal
    15.6
  196. 194ValdemoroMadrid, Spain
    15.6
  197. 194WoodlandCalifornia, United States
    15.6
  198. 198Salon-de-ProvenceProvence-Alpes-Côte d'Azur, France
    15.5
  199. 198ZlínZlín, Czechia
    15.5
  200. 198VigoGalicia, Spain
    15.5

Top 200 of 1,867 shown.

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