SmogRank / History / May 11, 2024

Most polluted cities on May 11, 2024

2,322 cities ranked by their average PM2.5 over the day; the worst was Grande Prairie, Canada, at 603.0 µg/m³. Each city's own local calendar day.

Bad-air episodes during May 11, 2024. All episodes.

← Grande Prairie 603.0 µg/m³ 600 µg/m³15 WHO 24-hour guideline
Every city ranked for May 11, 2024, 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
    500+40.2×
  2. 2EdmontonAlberta, Canada
    23810.9×
  3. 3ChillánÑuble, Chile
    1957.9×
  4. 4St. AlbertAlberta, Canada
    1927.6×
  5. 5HualpénBiobio, Chile
    1897.3×
  6. 6VillarricaAraucania, Chile
    1887.2×
  7. 7N'DjamenaN’Djaména, Chad
    1877.1×
  8. 8San CarlosÑuble, Chile
    1846.8×
  9. 9NacimientoBiobio, Chile
    1826.7×
  10. 10Sherwood ParkAlberta, Canada
    1816.6×
  11. 11TalcahuanoBiobio, Chile
    1796.4×
  12. 12Los ÁngelesBiobio, Chile
    1776.1×
  13. 13Red DeerAlberta, Canada
    1756.0×
  14. 14Santa Anita - Los FicusLima region, Peru
    1665.1×
  15. 15RancaguaO'Higgins Region, Chile
    1665.1×
  16. 16CuranilahueBiobio, Chile
    1634.8×
  17. 17CairoCairo, Egypt
    1624.7×
  18. 17CoyhaiqueAysén, Chile
    1624.7×
  19. 19CuricóMaule Region, Chile
    1624.7×
  20. 20Lahorelow-cost sensorsPunjab, Pakistan
    1594.4×
  21. 21OsornoLos Lagos Region, Chile
    1584.4×
  22. 22DelhiDelhi, India
    1584.4×
  23. 23BaghdadBaghdad, Iraq
    1574.3×
  24. 24RengoO'Higgins Region, Chile
    1574.3×
  25. 25La UniónLos Ríos Region, Chile
    1554.1×
  26. 26Dhakalow-cost sensorsDhaka Division, Bangladesh
    1533.9×
  27. 27TalaganteSantiago Metropolitan, Chile
    1523.8×
  28. 28Puerto VarasLos Lagos Region, Chile
    1523.8×
  29. 29CatañoCataño, Puerto Rico
    1513.7×
  30. 30Victoria de DurangoDurango, Mexico
    1463.6×
  31. 31SantiagoSantiago Metropolitan, Chile
    1443.5×
  32. 32TalcaMaule Region, Chile
    1433.5×
  33. 33TemucoAraucania, Chile
    1393.4×
  34. 34BelmopanCayo District, Belize
    1373.4×
  35. 35CoronelBiobio, Chile
    1373.3×
  36. 36SaskatoonSaskatchewan, Canada
    1333.2×
  37. 37Puerto AysénAysén, Chile
    1313.2×
  38. 38AirdrieAlberta, Canada
    1303.2×
  39. 39QuillotaValparaiso, Chile
    1293.1×
  40. 40ChiguayanteBiobio, Chile
    1263.0×
  41. 41JakartaJakarta, Indonesia
    1253.0×
  42. 42Puerto MonttLos Lagos Region, Chile
    1233.0×
  43. 43San Juan del RíoQuerétaro, Mexico
    1222.9×
  44. 44Prince AlbertSaskatchewan, Canada
    1212.9×
  45. 45ToméBiobio, Chile
    1212.9×
  46. 46Puente AltoSantiago Metropolitan, Chile
    1202.9×
  47. 47ValdiviaLos Ríos Region, Chile
    1192.9×
  48. 48AcerraCampania, Italy
    1182.8×
  49. 49Peshawarlow-cost sensorsKhyber Pakhtunkhwa, Pakistan
    1162.8×
  50. 50QuilpuéValparaiso, Chile
    1132.7×
  51. 51Kathmandulow-cost sensorsBagmati Province, Nepal
    1132.7×
  52. 51BeijingBeijing, China
    1132.7×
  53. 53ConcepciónBiobio, Chile
    1122.7×
  54. 54TolucaMéxico, Mexico
    1112.6×
  55. 55CauquenesMaule Region, Chile
    1102.6×
  56. 55MissionTexas, United States
    1102.6×
  57. 57CelayaGuanajuato, Mexico
    1092.6×
  58. 58CalgaryAlberta, Canada
    1092.6×
  59. 59San Pedro de la PazBiobio, Chile
    1072.5×
  60. 60Guatemala CityGuatemala, Guatemala
    1022.4×
  61. 61ŠabacCentral Serbia, Serbia
    1002.4×
  62. 62RabinalBaja Verapaz, Guatemala
    1002.3×
  63. 62Santiago de QuerétaroQuerétaro, Mexico
    1002.3×
  64. 64San Luis de la PazGuanajuato, Mexico
    992.3×
  65. 65EdinburgTexas, United States
    982.3×
  66. 66MukdahanMukdahan, Thailand
    962.2×
  67. 67IrapuatoGuanajuato, Mexico
    942.1×
  68. 68ReginaSaskatchewan, Canada
    932.1×
  69. 69HanoiHanoi, Vietnam
    932.1×
  70. 69ShanghaiShanghai, China
    932.1×
  71. 69León de los AldamaGuanajuato, Mexico
    932.1×
  72. 72QuinteroValparaiso, Chile
    922.1×
  73. 73KigaliKigali, Rwanda
    902.0×
  74. 74YuanlinTaiwan, Taiwan
    892.0×
  75. 75KoksijdeFlanders, Belgium
    881.9×
  76. 76ErlinTaiwan, Taiwan
    871.9×
  77. 77UžiceCentral Serbia, Serbia
    871.9×
  78. 77SalamancaGuanajuato, Mexico
    871.9×
  79. 79Viña del MarValparaiso, Chile
    871.9×
  80. 79AbasoloGuanajuato, Mexico
    871.9×
  81. 81Amnat CharoenAmnat Charoen, Thailand
    861.9×
  82. 81ShulinTaipei, Taiwan
    861.9×
  83. 81Jacobo HunterArequipa, Peru
    861.9×
  84. 84LimaLima Province, Peru
    861.9×
  85. 85NanNan, Thailand
    851.8×
  86. 86ZhushanTaiwan, Taiwan
    821.7×
  87. 86CopiapóAtacama, Chile
    821.7×
  88. 88GuanajuatoGuanajuato, Mexico
    821.7×
  89. 89PuliTaiwan, Taiwan
    821.7×
  90. 90Fort McMurrayAlberta, Canada
    821.7×
  91. 91HyderabadTelangana, India
    811.7×
  92. 92ZhudongTaiwan, Taiwan
    811.7×
  93. 92RoeselareFlanders, Belgium
    811.7×
  94. 94SarajevoFederation of B&H, Bosnia and Herzegovina
    801.7×
  95. 95San Miguel de AllendeGuanajuato, Mexico
    801.6×
  96. 96Chiang MaiChiang Mai, Thailand
    801.6×
  97. 96ErlunTaiwan, Taiwan
    801.6×
  98. 98LondonEngland, United Kingdom
    801.6×
  99. 98MaldegemFlanders, Belgium
    801.6×
  100. 100Mae SaiChiang Rai, Thailand
    791.6×
  101. 100MenenFlanders, Belgium
    791.6×
  102. 102Medicine HatAlberta, Canada
    791.6×
  103. 103Bang NaBangkok, Thailand
    791.6×
  104. 103DartfordEngland, United Kingdom
    791.6×
  105. 105ZhubeiTaiwan, Taiwan
    781.6×
  106. 105TaoyuanTaiwan, Taiwan
    781.6×
  107. 107ConcónValparaiso, Chile
    781.6×
  108. 108Si Sa KetSi Sa Ket, Thailand
    771.6×
  109. 108CoquimboCoquimbo Region, Chile
    771.6×
  110. 108AntofagastaAntofagasta, Chile
    771.6×
  111. 111Nakhon RatchasimaNakhon Ratchasima, Thailand
    771.5×
  112. 111AndenneWallonia, Belgium
    771.5×
  113. 113NantouTaiwan, Taiwan
    771.5×
  114. 114KanchanaburiKanchanaburi, Thailand
    771.5×
  115. 114La SerenaCoquimbo Region, Chile
    771.5×
  116. 116Islamabadlow-cost sensorsIslamabad, Pakistan
    771.5×
  117. 116KalasinKalasin, Thailand
    771.5×
  118. 118Karachilow-cost sensorsSindh, Pakistan
    761.5×
  119. 119DaxiTaiwan, Taiwan
    761.5×
  120. 119YeonggwangJeollanam-do, South Korea
    761.5×
  121. 121Si Maha PhotPrachin Buri, Thailand
    761.5×
  122. 121GraysEngland, United Kingdom
    761.5×
  123. 123Heroica MatamorosTamaulipas, Mexico
    751.5×
  124. 124BakuBaki, Azerbaijan
    751.5×
  125. 125KortrijkFlanders, Belgium
    751.5×
  126. 126UttaraditUttaradit, Thailand
    751.5×
  127. 127Mae SotTak, Thailand
    741.4×
  128. 127MiaoliTaiwan, Taiwan
    741.4×
  129. 129Roi EtRoi Et, Thailand
    741.4×
  130. 129XizhouTaiwan, Taiwan
    741.4×
  131. 129EvergemFlanders, Belgium
    741.4×
  132. 132NeiliTaiwan, Taiwan
    741.4×
  133. 133DouliuTaiwan, Taiwan
    741.4×
  134. 133PlymouthEngland, United Kingdom
    741.4×
  135. 135BeigangTaiwan, Taiwan
    731.4×
  136. 135TocopillaAntofagasta, Chile
    731.4×
  137. 137São PauloSão Paulo, Brazil
    731.4×
  138. 138Nong KhaemBangkok, Thailand
    731.4×
  139. 138LochristiFlanders, Belgium
    731.4×
  140. 138WaterfordMunster, Ireland
    731.4×
  141. 138New Taipei CityTaipei, Taiwan
    731.4×
  142. 142AntananarivoAnalamanga, Madagascar
    731.4×
  143. 142TaipeiTaiwan, Taiwan
    731.4×
  144. 142Khlong Sam WaBangkok, Thailand
    731.4×
  145. 145Şabāḩ as SālimMubārak al Kabīr, Kuwait
    721.4×
  146. 146AricaArica y Parinacota Region, Chile
    721.4×
  147. 147ChaozhouTaiwan, Taiwan
    721.4×
  148. 147CanterburyEngland, United Kingdom
    721.4×
  149. 147Bielsko-BialaSilesia, Poland
    721.4×
  150. 147Villa Poeta José Gálvez BarrenecheaLima region, Peru
    721.4×
  151. 151GuangzhouGuangdong, China
    721.4×
  152. 152PhraePhrae, Thailand
    721.3×
  153. 152Wan ChaiWan Chai, Hong Kong
    721.3×
  154. 154Chiayi CityTaiwan, Taiwan
    711.3×
  155. 155Vientianelow-cost sensorsVientiane Prefecture, Laos
    711.3×
  156. 155CharleroiWallonia, Belgium
    711.3×
  157. 157PhetchabunPhetchabun, Thailand
    711.3×
  158. 157GentFlanders, Belgium
    711.3×
  159. 159Ban ChangRayong, Thailand
    701.3×
  160. 159BuziTaiwan, Taiwan
    701.3×
  161. 161TaichungTaiwan, Taiwan
    701.3×
  162. 161ZwijndrechtFlanders, Belgium
    701.3×
  163. 163KolkataWest Bengal, India
    701.3×
  164. 163EindhovenNorth Brabant, The Netherlands
    701.3×
  165. 163IzegemFlanders, Belgium
    701.3×
  166. 166Ban Samae DamBangkok, Thailand
    701.3×
  167. 166HsinchuTaiwan, Taiwan
    701.3×
  168. 166BexleyEngland, United Kingdom
    701.3×
  169. 169Jastrzębie ZdrójSilesia, Poland
    701.3×
  170. 170MumbaiMaharashtra, India
    691.3×
  171. 170FengshanTakao, Taiwan
    691.3×
  172. 172SaraburiSaraburi, Thailand
    691.3×
  173. 172KatowiceSilesia, Poland
    691.3×
  174. 174RatchaburiRatchaburi, Thailand
    691.3×
  175. 175XizhiTaipei, Taiwan
    691.2×
  176. 175Asunciónlow-cost sensorsAsuncion, Paraguay
    691.2×
  177. 177SurinSurin, Thailand
    691.2×
  178. 177KasaokaOkayama, Japan
    691.2×
  179. 177VigoGalicia, Spain
    691.2×
  180. 177FontanaCalifornia, United States
    691.2×
  181. 181PhayaoPhayao, Thailand
    691.2×
  182. 181Khlong LuangPathum Thani, Thailand
    691.2×
  183. 181HouthalenFlanders, Belgium
    691.2×
  184. 184Phra PradaengSamut Prakan, Thailand
    681.2×
  185. 184YongkangTaiwan, Taiwan
    681.2×
  186. 184SanzhiTaipei, Taiwan
    681.2×
  187. 184DublinLeinster, Ireland
    681.2×
  188. 184ChimboteAncash, Peru
    681.2×
  189. 189Canvey IslandEngland, United Kingdom
    681.2×
  190. 190Nakhon PathomNakhon Pathom, Thailand
    681.2×
  191. 190Laem ChabangChon Buri, Thailand
    681.2×
  192. 190RacibórzSilesia, Poland
    681.2×
  193. 193MaputoMaputo City, Mozambique
    681.2×
  194. 193LampangLampang, Thailand
    681.2×
  195. 193TournaiWallonia, Belgium
    681.2×
  196. 196Sing BuriSing Buri, Thailand
    671.2×
  197. 196AomoriAomori, Japan
    671.2×
  198. 196MolFlanders, Belgium
    671.2×
  199. 196San Francisco De BorjaLima region, Peru
    671.2×
  200. 200ToufenTaiwan, Taiwan
    671.2×

Top 200 of 2,322 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

Not covered: the government monitoring networks of China and Turkey, which publish no terms that let us reuse their readings. Most cities there are missing from this board, not clean. Why.

Use this board

SmogRank, most polluted cities, PM2.5, May 11, 2024, smogrank.com/history/2024-05-11 (accessed 3 Oct 2026).

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