SmogRank / History / December 4, 2023

Most polluted cities on December 4, 2023

1,882 cities ranked by their average PM2.5 over the day; the worst was Ramos Arizpe, Mexico, at 376.0 µg/m³. Each city's own local calendar day.

Bad-air episodes during December 4, 2023. All episodes.

← Ramos Arizpe 376.0 µg/m³ 300 µg/m³15 WHO 24-hour guideline
Every city ranked for December 4, 2023, 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. 1Ramos ArizpeCoahuila, Mexico
    500+25.1×
  2. 2Lahorelow-cost sensorsPunjab, Pakistan
    33816.3×
  3. 3DelhiDelhi, India
    22610.1×
  4. 4Ulan BatorUlaanbaatar, Mongolia
    1907.4×
  5. 5SalorTashkent Region, Uzbekistan
    1897.3×
  6. 6CairoCairo, Egypt
    1877.1×
  7. 7Dhakalow-cost sensorsDhaka Division, Bangladesh
    1846.8×
  8. 8Islamabadlow-cost sensorsIslamabad, Pakistan
    1756.0×
  9. 9N'DjamenaN’Djaména, Chad
    1725.7×
  10. 10BeijingBeijing, China
    1624.8×
  11. 11Banja LukaSrpska, Bosnia and Herzegovina
    1614.7×
  12. 12MumbaiMaharashtra, India
    1614.6×
  13. 13Kathmandulow-cost sensorsBagmati Province, Nepal
    1554.1×
  14. 14DushanbeDushanbe, Tajikistan
    1554.0×
  15. 15ShenyangLiaoning, China
    1523.8×
  16. 16Abujalow-cost sensorsFCT, Nigeria
    1443.5×
  17. 17SarajevoFederation of B&H, Bosnia and Herzegovina
    1433.5×
  18. 18NišCentral Serbia, Serbia
    1433.5×
  19. 19HyderabadTelangana, India
    1423.5×
  20. 20JakartaJakarta, Indonesia
    1353.3×
  21. 21Ciudad Benito JuárezNuevo León, Mexico
    1313.2×
  22. 22Spišská Nová VesKošice Region, Slovakia
    1283.1×
  23. 23Victoria de DurangoDurango, Mexico
    1263.0×
  24. 24BadgerAlaska, United States
    1253.0×
  25. 25OpavaMoravian-Silesian Region, Czechia
    1243.0×
  26. 26BakuBaki, Azerbaijan
    1202.9×
  27. 27TijuanaBaja California, Mexico
    1092.6×
  28. 28MurciaMurcia, Spain
    1082.5×
  29. 29Şabāḩ as SālimMubārak al Kabīr, Kuwait
    1072.5×
  30. 30KazincbarcikaBorsod-Abaúj-Zemplén, Hungary
    1062.5×
  31. 31SkopjeGrad Skopje, North Macedonia
    1062.5×
  32. 32Samut SakhonSamut Sakhon, Thailand
    1062.5×
  33. 33ManamaManama, Bahrain
    1052.5×
  34. 34KavadarciKavadarci, North Macedonia
    1032.4×
  35. 35TetovoTetovo, North Macedonia
    1022.4×
  36. 36BelgradeCentral Serbia, Serbia
    1002.4×
  37. 37IaşiIași County, Romania
    982.3×
  38. 37DerryNorthern Ireland, United Kingdom
    982.3×
  39. 39AlessandriaPiedmont, Italy
    962.2×
  40. 40BerounCentral Bohemia, Czechia
    962.2×
  41. 41TraunUpper Austria, Austria
    942.2×
  42. 42CapannoriTuscany, Italy
    922.1×
  43. 43MiskolcBorsod-Abaúj-Zemplén, Hungary
    902.0×
  44. 44Haskovolow-cost sensorsHaskovo, Bulgaria
    902.0×
  45. 45MexicaliBaja California, Mexico
    892.0×
  46. 46Santa CatarinaNuevo León, Mexico
    881.9×
  47. 47OstravaMoravian-Silesian Region, Czechia
    871.9×
  48. 47KladnoCentral Bohemia, Czechia
    871.9×
  49. 49ZvolenBanská Bystrica Region, Slovakia
    861.9×
  50. 50VelesVeles, North Macedonia
    861.9×
  51. 51UlmBaden-Wurttemberg, Germany
    851.8×
  52. 52AnsfeldenUpper Austria, Austria
    851.8×
  53. 53Almatylow-cost sensorsAlmaty, Kazakhstan
    851.8×
  54. 53WormsRheinland-Pfalz, Germany
    851.8×
  55. 55GuangzhouGuangdong, China
    851.8×
  56. 55MartinŽilina Region, Slovakia
    851.8×
  57. 57KigaliKigali, Rwanda
    841.8×
  58. 58Ciudad JuárezChihuahua, Mexico
    841.8×
  59. 59TraunreutBavaria, Germany
    831.8×
  60. 60WelsUpper Austria, Austria
    831.8×
  61. 61KošiceKošice Region, Slovakia
    831.8×
  62. 61BitolaBitola, North Macedonia
    831.8×
  63. 61LinzUpper Austria, Austria
    831.8×
  64. 64TübingenBaden-Wurttemberg, Germany
    831.7×
  65. 64Neu-UlmBavaria, Germany
    831.7×
  66. 64Novi SadVojvodina, Serbia
    831.7×
  67. 67DejCluj County, Romania
    831.7×
  68. 68PrešovPrešov Region, Slovakia
    821.7×
  69. 68IlindenIlinden, North Macedonia
    821.7×
  70. 70QuinteroValparaiso, Chile
    821.7×
  71. 71Cadereyta JiménezNuevo León, Mexico
    821.7×
  72. 72AugsburgBavaria, Germany
    811.7×
  73. 72RužomberokŽilina Region, Slovakia
    811.7×
  74. 74MonterreyNuevo León, Mexico
    811.7×
  75. 75KonstanzBaden-Wurttemberg, Germany
    811.7×
  76. 75EisenhüttenstadtBrandenburg, Germany
    811.7×
  77. 75DěčínÚstí nad Labem Region, Czechia
    811.7×
  78. 78MostÚstí nad Labem Region, Czechia
    801.6×
  79. 78BohumínMoravian-Silesian Region, Czechia
    801.6×
  80. 80Addis AbabaAddis Ababa, Ethiopia
    801.6×
  81. 81Vranov nad TopľouPrešov Region, Slovakia
    801.6×
  82. 81ŽilinaŽilina Region, Slovakia
    801.6×
  83. 83Sankt PöltenLower Austria, Austria
    801.6×
  84. 84AmstettenLower Austria, Austria
    791.6×
  85. 84Ústí nad LabemÚstí nad Labem Region, Czechia
    791.6×
  86. 84San Francisco TlalcilalcalpanMéxico, Mexico
    791.6×
  87. 87PristinaPristina, Kosovo
    791.6×
  88. 87GrazStyria, Austria
    791.6×
  89. 89ComptonCalifornia, United States
    791.6×
  90. 90PraguePrague, Czechia
    781.6×
  91. 91JeddahMecca Region, Saudi Arabia
    781.6×
  92. 91Nong KhaemBangkok, Thailand
    781.6×
  93. 93YangonYangon, Myanmar
    781.6×
  94. 93Banská BystricaBanská Bystrica Region, Slovakia
    781.6×
  95. 95Biberach an der RißBaden-Wurttemberg, Germany
    771.6×
  96. 95ZnojmoSouth Moravian, Czechia
    771.6×
  97. 95PilsenPlzeň Region, Czechia
    771.6×
  98. 95Ciudad General EscobedoNuevo León, Mexico
    771.6×
  99. 99Hawthornelow-cost sensorsCalifornia, United States
    771.5×
  100. 100San Salvador TizatlalliMéxico, Mexico
    771.5×
  101. 101HumennéPrešov Region, Slovakia
    771.5×
  102. 101Puerto VarasLos Lagos Region, Chile
    771.5×
  103. 101Long BeachCalifornia, United States
    771.5×
  104. 104PassauBavaria, Germany
    771.5×
  105. 104ŽideniceSouth Moravian, Czechia
    771.5×
  106. 104TolucaMéxico, Mexico
    771.5×
  107. 104Ciudad ApodacaNuevo León, Mexico
    771.5×
  108. 108Bad KreuznachRheinland-Pfalz, Germany
    771.5×
  109. 109MontbéliardBourgogne-Franche-Comté, France
    761.5×
  110. 109HavířovMoravian-Silesian Region, Czechia
    761.5×
  111. 111LitvínovÚstí nad Labem Region, Czechia
    761.5×
  112. 111HanfordCalifornia, United States
    761.5×
  113. 113MühlhausenThuringia, Germany
    761.5×
  114. 114OurenseGalicia, Spain
    761.5×
  115. 115AnaheimCalifornia, United States
    751.5×
  116. 116AthensAttica, Greece
    751.5×
  117. 117Bishkeklow-cost sensorsBishkek, Kyrgyzstan
    751.5×
  118. 118Nakhon PathomNakhon Pathom, Thailand
    751.5×
  119. 118FilderstadtBaden-Wurttemberg, Germany
    751.5×
  120. 120Mueang NonthaburiNonthaburi, Thailand
    751.5×
  121. 121StuttgartBaden-Wurttemberg, Germany
    741.4×
  122. 121HualpénBiobio, Chile
    741.4×
  123. 123BrnoSouth Moravian, Czechia
    741.4×
  124. 123TurinPiedmont, Italy
    741.4×
  125. 123QuillotaValparaiso, Chile
    741.4×
  126. 126MunichBavaria, Germany
    741.4×
  127. 127CoquimboCoquimbo Region, Chile
    741.4×
  128. 128ToméBiobio, Chile
    741.4×
  129. 129PhoenixArizona, United States
    731.4×
  130. 130Frankfurt (Oder)Brandenburg, Germany
    731.4×
  131. 131ZürichZurich, Switzerland
    731.4×
  132. 131BerlinState of Berlin, Germany
    731.4×
  133. 133TepliceÚstí nad Labem Region, Czechia
    731.4×
  134. 134Khlong LuangPathum Thani, Thailand
    731.4×
  135. 134MeylanAuvergne-Rhône-Alpes, France
    731.4×
  136. 136SpeyerRheinland-Pfalz, Germany
    721.4×
  137. 136AalenBaden-Wurttemberg, Germany
    721.4×
  138. 136FairbanksAlaska, United States
    721.4×
  139. 139NyíregyházaSzabolcs-Szatmár-Bereg, Hungary
    721.4×
  140. 139BangkokBangkok, Thailand
    721.4×
  141. 139LampertheimHesse, Germany
    721.4×
  142. 139FriedrichshafenBaden-Wurttemberg, Germany
    721.4×
  143. 139CoronelBiobio, Chile
    721.4×
  144. 139ConcónValparaiso, Chile
    721.4×
  145. 145BailénAndalusia, Spain
    721.4×
  146. 145Schwedt (Oder)Brandenburg, Germany
    721.4×
  147. 145Carsonlow-cost sensorsCalifornia, United States
    721.4×
  148. 148PátraWest Greece, Greece
    721.4×
  149. 148AnnemasseAuvergne-Rhône-Alpes, France
    721.4×
  150. 148KadaňÚstí nad Labem Region, Czechia
    721.4×
  151. 148HualquiBiobio, Chile
    721.4×
  152. 152Bernau bei BerlinBrandenburg, Germany
    721.3×
  153. 153TeltowBrandenburg, Germany
    711.3×
  154. 154Phra PradaengSamut Prakan, Thailand
    711.3×
  155. 154KarlsruheBaden-Wurttemberg, Germany
    711.3×
  156. 154TocopillaAntofagasta, Chile
    711.3×
  157. 157CoyhaiqueAysén, Chile
    711.3×
  158. 158Frankfurt am MainHesse, Germany
    711.3×
  159. 158Mladá BoleslavCentral Bohemia, Czechia
    711.3×
  160. 160Viña del MarValparaiso, Chile
    711.3×
  161. 160FresnoCalifornia, United States
    711.3×
  162. 162Limburg an der LahnHesse, Germany
    701.3×
  163. 163Kan’onjichōKagawa, Japan
    701.3×
  164. 163Rüsselsheim am MainHesse, Germany
    701.3×
  165. 165České BudějoviceSouth Bohemian Region, Czechia
    701.3×
  166. 165ZapopanJalisco, Mexico
    701.3×
  167. 167EberswaldeBrandenburg, Germany
    701.3×
  168. 168OlomoucOlomouc Region, Czechia
    691.3×
  169. 168AntofagastaAntofagasta, Chile
    691.3×
  170. 168San Pedro de la PazBiobio, Chile
    691.3×
  171. 171EschbornHesse, Germany
    691.3×
  172. 171BensheimHesse, Germany
    691.3×
  173. 173SteyrUpper Austria, Austria
    691.3×
  174. 174BaselBasel-City, Switzerland
    691.2×
  175. 174PardubicePardubice Region, Czechia
    691.2×
  176. 174Hradec KrálovéHradec Králové Region, Czechia
    691.2×
  177. 177AsprópyrgosAttica, Greece
    691.2×
  178. 177CuernavacaMorelos, Mexico
    691.2×
  179. 179NeuenhagenBrandenburg, Germany
    691.2×
  180. 179LindauBavaria, Germany
    691.2×
  181. 179NacimientoBiobio, Chile
    691.2×
  182. 182CottbusBrandenburg, Germany
    681.2×
  183. 182TrnavaTrnava Region, Slovakia
    681.2×
  184. 182Frýdek-MístekMoravian-Silesian Region, Czechia
    681.2×
  185. 182CalamaAntofagasta, Chile
    681.2×
  186. 186AntananarivoAnalamanga, Madagascar
    681.2×
  187. 186StrausbergBrandenburg, Germany
    681.2×
  188. 186Hanau am MainHesse, Germany
    681.2×
  189. 186Mollet del VallèsCatalonia, Spain
    681.2×
  190. 186TalcahuanoBiobio, Chile
    681.2×
  191. 191GranadaAndalusia, Spain
    681.2×
  192. 191NeuruppinBrandenburg, Germany
    681.2×
  193. 191CuranilahueBiobio, Chile
    681.2×
  194. 194MiyakonojōMiyazaki, Japan
    681.2×
  195. 194GapProvence-Alpes-Côte d'Azur, France
    681.2×
  196. 196PiraeusAttica, Greece
    671.2×
  197. 196KochaniKochani, North Macedonia
    671.2×
  198. 196KlosterneuburgLower Austria, Austria
    671.2×
  199. 196WiesbadenHesse, Germany
    671.2×
  200. 196Schwandorf in BayernBavaria, Germany
    671.2×

Top 200 of 1,882 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

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SmogRank, most polluted cities, PM2.5, December 4, 2023, smogrank.com/history/2023-12-04 (accessed 2 Oct 2026).

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