SmogRank / History / November 21, 2023

Most polluted cities on November 21, 2023

1,921 cities ranked by their average PM2.5 over the day; the worst was Delhi, India, at 259.0 µg/m³. Each city's own local calendar day.

Bad-air episodes during November 21, 2023. All episodes.

← Delhi 259.0 µg/m³ 200 µg/m³15 WHO 24-hour guideline
Every city ranked for November 21, 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. 1DelhiDelhi, India
    36817.3×
  2. 2Lahorelow-cost sensorsPunjab, Pakistan
    29814.9×
  3. 3N'DjamenaN’Djaména, Chad
    25011.7×
  4. 4Peshawarlow-cost sensorsKhyber Pakhtunkhwa, Pakistan
    2189.5×
  5. 5Karachilow-cost sensorsSindh, Pakistan
    2048.6×
  6. 6BeijingBeijing, China
    2018.4×
  7. 7SarajevoFederation of B&H, Bosnia and Herzegovina
    2008.3×
  8. 8KolkataWest Bengal, India
    1978.1×
  9. 9Dhakalow-cost sensorsDhaka Division, Bangladesh
    1968.0×
  10. 10MexicaliBaja California, Mexico
    1826.6×
  11. 11Islamabadlow-cost sensorsIslamabad, Pakistan
    1816.5×
  12. 12TetovoTetovo, North Macedonia
    1725.7×
  13. 13AntananarivoAnalamanga, Madagascar
    1705.5×
  14. 14MumbaiMaharashtra, India
    1695.4×
  15. 15SkopjeGrad Skopje, North Macedonia
    1655.0×
  16. 16Abujalow-cost sensorsFCT, Nigeria
    1614.6×
  17. 17Banja LukaSrpska, Bosnia and Herzegovina
    1584.3×
  18. 18PristinaPristina, Kosovo
    1574.2×
  19. 19VelesVeles, North Macedonia
    1554.1×
  20. 20BitolaBitola, North Macedonia
    1543.9×
  21. 21KavadarciKavadarci, North Macedonia
    1533.9×
  22. 22Samut SakhonSamut Sakhon, Thailand
    1523.8×
  23. 23HyderabadTelangana, India
    1513.7×
  24. 24IlindenIlinden, North Macedonia
    1483.6×
  25. 25ShenyangLiaoning, China
    1323.2×
  26. 26AlessandriaPiedmont, Italy
    1283.1×
  27. 27BelgradeCentral Serbia, Serbia
    1243.0×
  28. 28NišCentral Serbia, Serbia
    1243.0×
  29. 29GuangzhouGuangdong, China
    1182.8×
  30. 30Nong KhaemBangkok, Thailand
    1172.8×
  31. 31Ulan BatorUlaanbaatar, Mongolia
    1172.8×
  32. 32CairoCairo, Egypt
    1172.8×
  33. 33Mueang NonthaburiNonthaburi, Thailand
    1142.7×
  34. 34Nakhon PathomNakhon Pathom, Thailand
    1122.7×
  35. 35TlaquepaqueJalisco, Mexico
    1082.6×
  36. 36Şabāḩ as SālimMubārak al Kabīr, Kuwait
    1082.5×
  37. 37JakartaJakarta, Indonesia
    1052.5×
  38. 38PesaroThe Marches, Italy
    1032.4×
  39. 39Novi SadVojvodina, Serbia
    1022.4×
  40. 40Khlong LuangPathum Thani, Thailand
    982.3×
  41. 41BangkokBangkok, Thailand
    962.2×
  42. 42TolucaMéxico, Mexico
    962.2×
  43. 43San Francisco TlalcilalcalpanMéxico, Mexico
    952.2×
  44. 44San Salvador TizatlalliMéxico, Mexico
    942.2×
  45. 45KochaniKochani, North Macedonia
    932.1×
  46. 46Bang Bo DistrictSamut Prakan, Thailand
    912.0×
  47. 47ZapopanJalisco, Mexico
    902.0×
  48. 48Samut PrakanSamut Prakan, Thailand
    902.0×
  49. 49SalamancaGuanajuato, Mexico
    902.0×
  50. 50DushanbeDushanbe, Tajikistan
    892.0×
  51. 51IaşiIași County, Romania
    881.9×
  52. 51ThessaloníkiCentral Macedonia, Greece
    881.9×
  53. 53JesiThe Marches, Italy
    881.9×
  54. 54Puerto VarasLos Lagos Region, Chile
    881.9×
  55. 55CholulaPuebla, Mexico
    881.9×
  56. 56GrazStyria, Austria
    881.9×
  57. 57Ban Khlong PrawetBangkok, Thailand
    861.9×
  58. 57PueblaPuebla, Mexico
    861.9×
  59. 59Almatylow-cost sensorsAlmaty, Kazakhstan
    861.9×
  60. 59Puerto MonttLos Lagos Region, Chile
    861.9×
  61. 61Sevlievolow-cost sensorsGabrovo, Bulgaria
    851.8×
  62. 62KigaliKigali, Rwanda
    851.8×
  63. 63CelayaGuanajuato, Mexico
    851.8×
  64. 64Cluj-NapocaCluj County, Romania
    841.8×
  65. 65Falconara MarittimaThe Marches, Italy
    831.8×
  66. 66Phra PradaengSamut Prakan, Thailand
    831.8×
  67. 67NacimientoBiobio, Chile
    821.7×
  68. 68AthensAttica, Greece
    821.7×
  69. 69GuadalajaraJalisco, Mexico
    811.7×
  70. 70MiskolcBorsod-Abaúj-Zemplén, Hungary
    801.6×
  71. 71Puerto AysénAysén, Chile
    801.6×
  72. 72Shakaskraallow-cost sensorsKwaZulu-Natal, South Africa
    791.6×
  73. 73NyíregyházaSzabolcs-Szatmár-Bereg, Hungary
    791.6×
  74. 74Tuen MunTuen Mun, Hong Kong
    781.6×
  75. 75Tin Shui WaiYuen Long, Hong Kong
    771.5×
  76. 76Botevgradlow-cost sensorsSofia, Bulgaria
    771.5×
  77. 77CoyhaiqueAysén, Chile
    771.5×
  78. 78HandlováTrenčín Region, Slovakia
    761.5×
  79. 78BadgerAlaska, United States
    761.5×
  80. 80OurenseGalicia, Spain
    761.5×
  81. 81KazincbarcikaBorsod-Abaúj-Zemplén, Hungary
    761.5×
  82. 82Wan ChaiWan Chai, Hong Kong
    751.5×
  83. 83TrentoTrentino-Alto Adige, Italy
    751.5×
  84. 83TocopillaAntofagasta, Chile
    751.5×
  85. 83La UniónLos Ríos Region, Chile
    751.5×
  86. 86Zacatepec de HidalgoMorelos, Mexico
    751.5×
  87. 87YangonYangon, Myanmar
    741.4×
  88. 88HonmachiKumamoto, Japan
    741.4×
  89. 89IrapuatoGuanajuato, Mexico
    741.4×
  90. 90BolzanoTrentino-Alto Adige, Italy
    741.4×
  91. 90AricaArica y Parinacota Region, Chile
    741.4×
  92. 92Silao de la VictoriaGuanajuato, Mexico
    731.4×
  93. 93WoodburnOregon, United States
    731.4×
  94. 94MinamataKumamoto, Japan
    731.4×
  95. 94Asunciónlow-cost sensorsAsuncion, Paraguay
    731.4×
  96. 96OsornoLos Lagos Region, Chile
    721.4×
  97. 97Tanushimarumachi-toyokiFukuoka, Japan
    721.4×
  98. 98PiraeusAttica, Greece
    721.4×
  99. 98KumamotoKumamoto, Japan
    721.4×
  100. 100TorreviejaValencia, Spain
    721.3×
  101. 100YecapixtlaMorelos, Mexico
    721.3×
  102. 102CoronelBiobio, Chile
    711.3×
  103. 103Quezon Citylow-cost sensorsNational Capital Region, Philippines
    711.3×
  104. 103ŌmutaFukuoka, Japan
    711.3×
  105. 105Klagenfurt am WörtherseeCarinthia, Austria
    711.3×
  106. 105Arden-ArcadeCalifornia, United States
    711.3×
  107. 107KošiceKošice Region, Slovakia
    701.3×
  108. 107PrievidzaTrenčín Region, Slovakia
    701.3×
  109. 109CraiovaDolj, Romania
    701.3×
  110. 109TemucoAraucania, Chile
    701.3×
  111. 111WolfsbergCarinthia, Austria
    701.3×
  112. 111TalcaMaule Region, Chile
    701.3×
  113. 113KobayashiMiyazaki, Japan
    691.3×
  114. 114AraoKumamoto, Japan
    691.3×
  115. 115San CarlosÑuble, Chile
    691.3×
  116. 116HualquiBiobio, Chile
    691.2×
  117. 117FanlingNorth District, Hong Kong
    691.2×
  118. 117Alto HospicioTarapacá, Chile
    691.2×
  119. 119Haskovolow-cost sensorsHaskovo, Bulgaria
    681.2×
  120. 119Uekimachi-mōnoKumamoto, Japan
    681.2×
  121. 119Le RobertMartinique, Martinique
    681.2×
  122. 119KirishimaKagoshima, Japan
    681.2×
  123. 123ValdiviaLos Ríos Region, Chile
    681.2×
  124. 123TalcahuanoBiobio, Chile
    681.2×
  125. 125SallanchesAuvergne-Rhône-Alpes, France
    681.2×
  126. 126Mong KokYau Tsim Mong District, Hong Kong
    681.2×
  127. 126UtoKumamoto, Japan
    681.2×
  128. 126KurumeFukuoka, Japan
    681.2×
  129. 129ŌzuKumamoto, Japan
    681.2×
  130. 129LuganoTicino, Switzerland
    681.2×
  131. 129CapannoriTuscany, Italy
    681.2×
  132. 129Le LamentinMartinique, Martinique
    681.2×
  133. 129Victoria de DurangoDurango, Mexico
    681.2×
  134. 129VisaliaCalifornia, United States
    681.2×
  135. 135TagawaFukuoka, Japan
    671.2×
  136. 135MiyakonojōMiyazaki, Japan
    671.2×
  137. 137EsztergomKomárom-Esztergom, Hungary
    671.2×
  138. 137CoquimboCoquimbo Region, Chile
    671.2×
  139. 137Santiago de QuerétaroQuerétaro, Mexico
    671.2×
  140. 140KlaipėdaKlaipėda County, Lithuania
    671.2×
  141. 140León de los AldamaGuanajuato, Mexico
    671.2×
  142. 140StocktonCalifornia, United States
    671.2×
  143. 143NagaiYamagata, Japan
    671.2×
  144. 143Fort-de-FranceMartinique, Martinique
    671.2×
  145. 145ToméBiobio, Chile
    671.2×
  146. 145QuinteroValparaiso, Chile
    671.2×
  147. 145FresnoCalifornia, United States
    671.2×
  148. 148Tepeji del Río de OcampoHidalgo, Mexico
    661.2×
  149. 149Tai PoTai Po, Hong Kong
    661.1×
  150. 149CartagenaMurcia, Spain
    661.1×
  151. 149BurrianaValencia, Spain
    661.1×
  152. 149HanfordCalifornia, United States
    661.1×
  153. 149KogaFukuoka, Japan
    661.1×
  154. 154AsprópyrgosAttica, Greece
    661.1×
  155. 154Addis AbabaAddis Ababa, Ethiopia
    661.1×
  156. 154YanagawaFukuoka, Japan
    661.1×
  157. 154Ōyanomachi-noboritateKumamoto, Japan
    661.1×
  158. 154IzumiKagoshima, Japan
    661.1×
  159. 154Hondomachi-hondoKumamoto, Japan
    661.1×
  160. 160KotōKumamoto, Japan
    661.1×
  161. 161AlgecirasAndalusia, Spain
    651.1×
  162. 161BogotáBogota D.C., Colombia
    651.1×
  163. 161AntofagastaAntofagasta, Chile
    651.1×
  164. 161San Pedro de la PazBiobio, Chile
    651.1×
  165. 165SendaiKagoshima, Japan
    651.1×
  166. 165ConcónValparaiso, Chile
    651.1×
  167. 167YamagaKumamoto, Japan
    651.1×
  168. 167OberhausenNorth Rhine-Westphalia, Germany
    651.1×
  169. 167AbasoloGuanajuato, Mexico
    651.1×
  170. 167ChikuseiIbaraki, Japan
    651.1×
  171. 171JeddahMecca Region, Saudi Arabia
    651.1×
  172. 171CuernavacaMorelos, Mexico
    651.1×
  173. 171Los ÁngelesBiobio, Chile
    651.1×
  174. 174NōgataFukuoka, Japan
    651.1×
  175. 174Kanzakimachi-kanzakiSaga, Japan
    651.1×
  176. 176TacomaWashington, United States
    641.1×
  177. 177CuranilahueBiobio, Chile
    641.1×
  178. 178Spišská Nová VesKošice Region, Slovakia
    641.1×
  179. 178Sham Shui PoSham Shui Po District, Hong Kong
    641.1×
  180. 178KakegawaShizuoka, Japan
    641.1×
  181. 181Sha TinSha Tin, Hong Kong
    641.1×
  182. 181San Tung Chung HangIslands, Hong Kong
    641.1×
  183. 183Maebaru-chūōFukuoka, Japan
    641.1×
  184. 183SacramentoCalifornia, United States
    641.1×
  185. 185TosuSaga, Japan
    631.1×
  186. 185Kaseda-shirakameKagoshima, Japan
    631.1×
  187. 185MurciaMurcia, Spain
    631.1×
  188. 185PartizánskeTrenčín Region, Slovakia
    631.1×
  189. 185AltamontOregon, United States
    631.1×
  190. 190Tsuen WanTsuen Wan, Hong Kong
    631.0×
  191. 190Kwai ChungKwai Tsing District, Hong Kong
    631.0×
  192. 192KasaokaOkayama, Japan
    631.0×
  193. 192Imarichō-kōSaga, Japan
    631.0×
  194. 192HitoyoshiKumamoto, Japan
    631.0×
  195. 192MonacoMunicipality of Monaco, Monaco
    631.0×
  196. 192QuillotaValparaiso, Chile
    631.0×
  197. 192MedfordOregon, United States
    631.0×
  198. 198ChiguayanteBiobio, Chile
    631.0×
  199. 198YakimaWashington, United States
    631.0×
  200. 200Sau Mau PingKwun Tong District, Hong Kong
    631.0×

Top 200 of 1,921 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

Use this board

SmogRank, most polluted cities, PM2.5, November 21, 2023, smogrank.com/history/2023-11-21 (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.