SmogRank / History / May 15, 2023

Most polluted cities on May 15, 2023

1,294 cities ranked by their average PM2.5 over the day; the worst was Grande Prairie, Canada, at 217.0 µg/m³. Each city's own local calendar day.

Bad-air episodes during May 15, 2023. All episodes.

← Grande Prairie 217.0 µg/m³ 200 µg/m³15 WHO 24-hour guideline
Every city ranked for May 15, 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. 1Grande PrairieAlberta, Canada
    29214.5×
  2. 2CoyhaiqueAysén, Chile
    1917.5×
  3. 3Lahorelow-cost sensorsPunjab, Pakistan
    1856.9×
  4. 4Fort St. JohnBritish Columbia, Canada
    1665.1×
  5. 5BeijingBeijing, China
    1634.9×
  6. 6JakartaJakarta, Indonesia
    1564.1×
  7. 7GuangzhouGuangdong, China
    1373.3×
  8. 8Peshawarlow-cost sensorsKhyber Pakhtunkhwa, Pakistan
    1303.1×
  9. 9SalamancaCastille and León, Spain
    1283.1×
  10. 10NacimientoBiobio, Chile
    1192.9×
  11. 11HualquiBiobio, Chile
    1152.7×
  12. 12SantiagoSantiago Metropolitan, Chile
    1102.6×
  13. 13Puente AltoSantiago Metropolitan, Chile
    1082.6×
  14. 14RancaguaO'Higgins Region, Chile
    1062.5×
  15. 15ChennaiTamil Nadu, India
    1052.5×
  16. 16León de los AldamaGuanajuato, Mexico
    1042.5×
  17. 17ValdiviaLos Ríos Region, Chile
    1042.4×
  18. 18HyderabadTelangana, India
    1002.4×
  19. 19CuricóMaule Region, Chile
    1002.4×
  20. 20CuranilahueBiobio, Chile
    992.3×
  21. 21Puerto AysénAysén, Chile
    982.3×
  22. 22Kathmandulow-cost sensorsBagmati Province, Nepal
    982.3×
  23. 23TemucoAraucania, Chile
    972.2×
  24. 24TalaganteSantiago Metropolitan, Chile
    962.2×
  25. 25Dhakalow-cost sensorsDhaka Division, Bangladesh
    952.2×
  26. 25Hacienda Santa FeJalisco, Mexico
    952.2×
  27. 27OsornoLos Lagos Region, Chile
    952.2×
  28. 28Kampalalow-cost sensorsCentral Region, Uganda
    942.1×
  29. 28Addis AbabaAddis Ababa, Ethiopia
    942.1×
  30. 30Islamabadlow-cost sensorsIslamabad, Pakistan
    932.1×
  31. 31Nong KhaemBangkok, Thailand
    932.1×
  32. 32HanoiHanoi, Vietnam
    922.1×
  33. 32Khlong LuangPathum Thani, Thailand
    922.1×
  34. 34DelhiDelhi, India
    922.1×
  35. 35La UniónLos Ríos Region, Chile
    912.0×
  36. 36CoronelBiobio, Chile
    892.0×
  37. 37KolkataWest Bengal, India
    892.0×
  38. 38DushanbeDushanbe, Tajikistan
    881.9×
  39. 39Los ÁngelesBiobio, Chile
    881.9×
  40. 40LinaresMaule Region, Chile
    871.9×
  41. 41PristinaPristina, Kosovo
    871.9×
  42. 42Puerto MonttLos Lagos Region, Chile
    871.9×
  43. 42Prince GeorgeBritish Columbia, Canada
    871.9×
  44. 44Nakhon PathomNakhon Pathom, Thailand
    851.8×
  45. 45GrimbergenFlanders, Belgium
    851.8×
  46. 46CelayaGuanajuato, Mexico
    851.8×
  47. 47Puerto VarasLos Lagos Region, Chile
    841.8×
  48. 47ChillánÑuble, Chile
    841.8×
  49. 49JeddahMecca Region, Saudi Arabia
    841.8×
  50. 50BangkokBangkok, Thailand
    841.8×
  51. 51QuillotaValparaiso, Chile
    831.8×
  52. 52WillebroekFlanders, Belgium
    831.8×
  53. 53AarschotFlanders, Belgium
    821.7×
  54. 53CoquimboCoquimbo Region, Chile
    821.7×
  55. 55Mueang NonthaburiNonthaburi, Thailand
    821.7×
  56. 56Bang KapiBangkok, Thailand
    811.7×
  57. 56San CarlosÑuble, Chile
    811.7×
  58. 56AntofagastaAntofagasta, Chile
    811.7×
  59. 59MaldegemFlanders, Belgium
    811.7×
  60. 60AstanaAstana, Kazakhstan
    801.7×
  61. 60Phra PradaengSamut Prakan, Thailand
    801.7×
  62. 60Bang Bo DistrictSamut Prakan, Thailand
    801.7×
  63. 60AntwerpFlanders, Belgium
    801.7×
  64. 64HualpénBiobio, Chile
    801.7×
  65. 65TocopillaAntofagasta, Chile
    801.6×
  66. 66SalamancaGuanajuato, Mexico
    801.6×
  67. 67LotaBiobio, Chile
    801.6×
  68. 68La SerenaCoquimbo Region, Chile
    791.6×
  69. 69Samut PrakanSamut Prakan, Thailand
    791.6×
  70. 70LiègeWallonia, Belgium
    791.6×
  71. 70ChiguayanteBiobio, Chile
    791.6×
  72. 72Şabāḩ as SālimMubārak al Kabīr, Kuwait
    781.6×
  73. 72Tha BoNong Khai, Thailand
    781.6×
  74. 72BeverenFlanders, Belgium
    781.6×
  75. 72Viña del MarValparaiso, Chile
    781.6×
  76. 72TalcaMaule Region, Chile
    781.6×
  77. 77Samut SakhonSamut Sakhon, Thailand
    781.6×
  78. 78CopiapóAtacama, Chile
    771.6×
  79. 79EvergemFlanders, Belgium
    771.5×
  80. 79AachenNorth Rhine-Westphalia, Germany
    771.5×
  81. 81EupenWallonia, Belgium
    761.5×
  82. 82Guatemala CityGuatemala, Guatemala
    761.5×
  83. 83RabinalBaja Verapaz, Guatemala
    751.5×
  84. 84AntananarivoAnalamanga, Madagascar
    751.5×
  85. 84MolFlanders, Belgium
    751.5×
  86. 84La Crescenta-Montroselow-cost sensorsCalifornia, United States
    751.5×
  87. 87ToméBiobio, Chile
    751.5×
  88. 88MumbaiMaharashtra, India
    751.5×
  89. 89RoeselareFlanders, Belgium
    751.5×
  90. 90KortrijkFlanders, Belgium
    741.4×
  91. 91WaregemFlanders, Belgium
    741.4×
  92. 91IzegemFlanders, Belgium
    741.4×
  93. 93Los AngelesCalifornia, United States
    741.4×
  94. 93San Pedro de la PazBiobio, Chile
    741.4×
  95. 95AthensAttica, Greece
    741.4×
  96. 95ConcónValparaiso, Chile
    741.4×
  97. 97TalcahuanoBiobio, Chile
    741.4×
  98. 98ZwijndrechtFlanders, Belgium
    731.4×
  99. 98QuinteroValparaiso, Chile
    731.4×
  100. 100MenenFlanders, Belgium
    731.4×
  101. 100CharleroiWallonia, Belgium
    731.4×
  102. 100BergheimNorth Rhine-Westphalia, Germany
    731.4×
  103. 100DenainHauts-de-France, France
    731.4×
  104. 104MonsWallonia, Belgium
    731.4×
  105. 105LochristiFlanders, Belgium
    731.4×
  106. 106GentFlanders, Belgium
    721.4×
  107. 106AndenneWallonia, Belgium
    721.4×
  108. 108AricaArica y Parinacota Region, Chile
    721.4×
  109. 108FontanaCalifornia, United States
    721.4×
  110. 110SolingenNorth Rhine-Westphalia, Germany
    721.4×
  111. 110Alto HospicioTarapacá, Chile
    721.4×
  112. 112BaghdadBaghdad, Iraq
    721.3×
  113. 112KapellenFlanders, Belgium
    721.3×
  114. 114ManamaManama, Bahrain
    711.3×
  115. 114BrusselsBrussels Capital, Belgium
    711.3×
  116. 116BonnNorth Rhine-Westphalia, Germany
    711.3×
  117. 117EssenNorth Rhine-Westphalia, Germany
    711.3×
  118. 118DunkirkHauts-de-France, France
    711.3×
  119. 119KoksijdeFlanders, Belgium
    711.3×
  120. 119KölnNorth Rhine-Westphalia, Germany
    711.3×
  121. 121KrefeldNorth Rhine-Westphalia, Germany
    701.3×
  122. 122RoubaixHauts-de-France, France
    701.3×
  123. 123AcharnésAttica, Greece
    701.3×
  124. 123SundsvallVästernorrland, Sweden
    701.3×
  125. 123ConcepciónBiobio, Chile
    701.3×
  126. 126DelmenhorstLower Saxony, Germany
    701.3×
  127. 127StabroekFlanders, Belgium
    701.3×
  128. 127JüchenNorth Rhine-Westphalia, Germany
    701.3×
  129. 127CauquenesMaule Region, Chile
    701.3×
  130. 130YangonYangon, Myanmar
    691.3×
  131. 130KoblenzRheinland-Pfalz, Germany
    691.3×
  132. 130TijuanaBaja California, Mexico
    691.3×
  133. 133Karachilow-cost sensorsSindh, Pakistan
    691.3×
  134. 133DuisburgNorth Rhine-Westphalia, Germany
    691.3×
  135. 135HagenNorth Rhine-Westphalia, Germany
    691.2×
  136. 135DattelnNorth Rhine-Westphalia, Germany
    691.2×
  137. 135São PauloSão Paulo, Brazil
    691.2×
  138. 135RiversideCalifornia, United States
    691.2×
  139. 139SalorTashkent Region, Uzbekistan
    691.2×
  140. 140DüsseldorfNorth Rhine-Westphalia, Germany
    691.2×
  141. 141RostockMecklenburg-Vorpommern, Germany
    681.2×
  142. 142Sainte-Geneviève-des-BoisÎle-de-France, France
    671.2×
  143. 143Flémalle-HauteWallonia, Belgium
    671.2×
  144. 143UnnaNorth Rhine-Westphalia, Germany
    671.2×
  145. 143KielSchleswig-Holstein, Germany
    671.2×
  146. 143DortmundNorth Rhine-Westphalia, Germany
    671.2×
  147. 143Jurupa ValleyCalifornia, United States
    671.2×
  148. 148Haskovolow-cost sensorsHaskovo, Bulgaria
    671.2×
  149. 148LüdenscheidNorth Rhine-Westphalia, Germany
    671.2×
  150. 148Esch-sur-AlzetteEsch-sur-Alzette, Luxembourg
    671.2×
  151. 151GelsenkirchenNorth Rhine-Westphalia, Germany
    671.2×
  152. 152ConakryConakry, Guinea
    661.2×
  153. 152JülichNorth Rhine-Westphalia, Germany
    661.2×
  154. 154Marche-en-FamenneWallonia, Belgium
    661.2×
  155. 154WuppertalNorth Rhine-Westphalia, Germany
    661.2×
  156. 154MünsterNorth Rhine-Westphalia, Germany
    661.2×
  157. 157OberhausenNorth Rhine-Westphalia, Germany
    661.1×
  158. 158CalamaAntofagasta, Chile
    661.1×
  159. 159Saint-ÉtienneAuvergne-Rhône-Alpes, France
    661.1×
  160. 160RatingenNorth Rhine-Westphalia, Germany
    661.1×
  161. 160OsnabrückLower Saxony, Germany
    661.1×
  162. 160BorkenNorth Rhine-Westphalia, Germany
    661.1×
  163. 163ÉtampesÎle-de-France, France
    651.1×
  164. 163ParadiseCalifornia, United States
    651.1×
  165. 163CalgaryAlberta, Canada
    651.1×
  166. 166TeltowBrandenburg, Germany
    651.1×
  167. 166LuxembourgLuxembourg, Luxembourg
    651.1×
  168. 166Novi SadVojvodina, Serbia
    651.1×
  169. 169RambouilletÎle-de-France, France
    651.1×
  170. 169East LakeFlorida, United States
    651.1×
  171. 169Santa ClaritaCalifornia, United States
    651.1×
  172. 172TournaiWallonia, Belgium
    651.1×
  173. 172WismarMecklenburg-Vorpommern, Germany
    651.1×
  174. 172LingenLower Saxony, Germany
    651.1×
  175. 175Naucalpan de JuárezMéxico, Mexico
    651.1×
  176. 175Agouralow-cost sensorsCalifornia, United States
    651.1×
  177. 177BelgradeCentral Serbia, Serbia
    641.1×
  178. 177MostaIl-Mosta, Malta
    641.1×
  179. 179NišCentral Serbia, Serbia
    641.1×
  180. 179SoestNorth Rhine-Westphalia, Germany
    641.1×
  181. 181TrierRheinland-Pfalz, Germany
    641.1×
  182. 181BurbankCalifornia, United States
    641.1×
  183. 183AsprópyrgosAttica, Greece
    641.1×
  184. 183LeverkusenNorth Rhine-Westphalia, Germany
    641.1×
  185. 183GüstrowMecklenburg-Vorpommern, Germany
    641.1×
  186. 183BendorfRheinland-Pfalz, Germany
    641.1×
  187. 183Saint-DizierGrand Est, France
    641.1×
  188. 183ReimsGrand Est, France
    641.1×
  189. 183MeyzieuAuvergne-Rhône-Alpes, France
    641.1×
  190. 183Chalon-sur-SaôneBourgogne-Franche-Comté, France
    641.1×
  191. 191OldenburgLower Saxony, Germany
    641.1×
  192. 192FriesoytheLower Saxony, Germany
    631.1×
  193. 192MetzGrand Est, France
    631.1×
  194. 194LilleHauts-de-France, France
    631.0×
  195. 195ParisÎle-de-France, France
    631.0×
  196. 196MönchengladbachNorth Rhine-Westphalia, Germany
    631.0×
  197. 196Limburg an der LahnHesse, Germany
    631.0×
  198. 196HattingenNorth Rhine-Westphalia, Germany
    631.0×
  199. 196BerlinState of Berlin, Germany
    631.0×
  200. 196ValenceAuvergne-Rhône-Alpes, France
    631.0×

Top 200 of 1,294 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, May 15, 2023, smogrank.com/history/2023-05-15 (accessed 2 Oct 2026).

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