SmogRank / History / May 12, 2024

Most polluted cities on May 12, 2024

2,282 cities ranked by their average PM2.5 over the day; the worst was Grande Prairie, Canada, at 208.0 µg/m³. Each city's own local calendar day.

Bad-air episodes during May 12, 2024. All episodes.

← Grande Prairie 208.0 µg/m³ 200 µg/m³15 WHO 24-hour guideline
Every city ranked for May 12, 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
    28313.9×
  2. 2NacimientoBiobio, Chile
    2149.3×
  3. 3EdmontonAlberta, Canada
    2038.5×
  4. 4CoyhaiqueAysén, Chile
    1988.1×
  5. 5ChillánÑuble, Chile
    1856.9×
  6. 6HualpénBiobio, Chile
    1846.8×
  7. 7TalcahuanoBiobio, Chile
    1745.9×
  8. 8St. AlbertAlberta, Canada
    1725.7×
  9. 9BaghdadBaghdad, Iraq
    1705.5×
  10. 10Red DeerAlberta, Canada
    1695.4×
  11. 11Dhakalow-cost sensorsDhaka Division, Bangladesh
    1685.3×
  12. 12Puerto AysénAysén, Chile
    1685.3×
  13. 12Sherwood ParkAlberta, Canada
    1685.3×
  14. 14OsornoLos Lagos Region, Chile
    1665.2×
  15. 15CoronelBiobio, Chile
    1665.1×
  16. 16CuranilahueBiobio, Chile
    1665.1×
  17. 17CuricóMaule Region, Chile
    1665.1×
  18. 18N'DjamenaN’Djaména, Chad
    1655.1×
  19. 19DelhiDelhi, India
    1645.0×
  20. 20Santa Anita - Los FicusLima region, Peru
    1634.9×
  21. 21San CarlosÑuble, Chile
    1634.9×
  22. 22Puerto MonttLos Lagos Region, Chile
    1604.6×
  23. 23TemucoAraucania, Chile
    1574.3×
  24. 24Los ÁngelesBiobio, Chile
    1574.3×
  25. 25Puerto VarasLos Lagos Region, Chile
    1564.1×
  26. 26CatañoCataño, Puerto Rico
    1554.0×
  27. 27RancaguaO'Higgins Region, Chile
    1544.0×
  28. 28TalcaMaule Region, Chile
    1533.9×
  29. 29CalgaryAlberta, Canada
    1533.9×
  30. 30VillarricaAraucania, Chile
    1453.6×
  31. 31Lahorelow-cost sensorsPunjab, Pakistan
    1433.5×
  32. 32Puente AltoSantiago Metropolitan, Chile
    1413.5×
  33. 33ValdiviaLos Ríos Region, Chile
    1413.4×
  34. 34JakartaJakarta, Indonesia
    1403.4×
  35. 35TalaganteSantiago Metropolitan, Chile
    1403.4×
  36. 36SantiagoSantiago Metropolitan, Chile
    1383.4×
  37. 37ToméBiobio, Chile
    1373.3×
  38. 37RengoO'Higgins Region, Chile
    1373.3×
  39. 39Ciudad Benito JuárezNuevo León, Mexico
    1353.3×
  40. 40West FargoNorth Dakota, United States
    1323.2×
  41. 41La UniónLos Ríos Region, Chile
    1293.1×
  42. 42ChiguayanteBiobio, Chile
    1253.0×
  43. 43Si Sa KetSi Sa Ket, Thailand
    1253.0×
  44. 44QuillotaValparaiso, Chile
    1172.8×
  45. 45CelayaGuanajuato, Mexico
    1152.7×
  46. 46Thunder BayOntario, Canada
    1142.7×
  47. 47LethbridgeAlberta, Canada
    1122.7×
  48. 48AirdrieAlberta, Canada
    1102.6×
  49. 49ShanghaiShanghai, China
    1102.6×
  50. 50RabinalBaja Verapaz, Guatemala
    1082.6×
  51. 50San Pedro de la PazBiobio, Chile
    1082.6×
  52. 52ConcepciónBiobio, Chile
    1082.6×
  53. 53ŠabacCentral Serbia, Serbia
    1082.6×
  54. 54BelmopanCayo District, Belize
    1072.5×
  55. 55CauquenesMaule Region, Chile
    1062.5×
  56. 56DuluthMinnesota, United States
    1052.5×
  57. 57San Luis de la PazGuanajuato, Mexico
    1042.5×
  58. 58SuperiorWisconsin, United States
    1032.4×
  59. 59Guatemala CityGuatemala, Guatemala
    1012.4×
  60. 60Nong KhaemBangkok, Thailand
    1002.3×
  61. 61CairoCairo, Egypt
    992.3×
  62. 62Amnat CharoenAmnat Charoen, Thailand
    982.3×
  63. 63Bang NaBangkok, Thailand
    972.3×
  64. 63YeonggwangJeollanam-do, South Korea
    972.3×
  65. 63Victoria de DurangoDurango, Mexico
    972.3×
  66. 66Saint MichaelMinnesota, United States
    972.3×
  67. 67Khlong Sam WaBangkok, Thailand
    952.2×
  68. 68IrapuatoGuanajuato, Mexico
    952.2×
  69. 69Medicine HatAlberta, Canada
    932.1×
  70. 70YasothonYasothon, Thailand
    932.1×
  71. 71Khan Na YaoBangkok, Thailand
    922.1×
  72. 72San Juan del RíoQuerétaro, Mexico
    922.1×
  73. 73Kathmandulow-cost sensorsBagmati Province, Nepal
    912.1×
  74. 74Corpus ChristiTexas, United States
    912.0×
  75. 75Ban Samae DamBangkok, Thailand
    912.0×
  76. 76AcerraCampania, Italy
    902.0×
  77. 76ReginaSaskatchewan, Canada
    902.0×
  78. 78WaegwanGyeongsangbuk-do, South Korea
    902.0×
  79. 78RangioraCanterbury, New Zealand
    902.0×
  80. 80SokchoGangwon-do, South Korea
    902.0×
  81. 80León de los AldamaGuanajuato, Mexico
    902.0×
  82. 82HanoiHanoi, Vietnam
    902.0×
  83. 83GuanajuatoGuanajuato, Mexico
    902.0×
  84. 84KolkataWest Bengal, India
    902.0×
  85. 85MissionTexas, United States
    892.0×
  86. 86San Miguel de AllendeGuanajuato, Mexico
    881.9×
  87. 86Saint CloudMinnesota, United States
    881.9×
  88. 88QuinteroValparaiso, Chile
    881.9×
  89. 89KigaliKigali, Rwanda
    871.9×
  90. 89QuilpuéValparaiso, Chile
    871.9×
  91. 91Peshawarlow-cost sensorsKhyber Pakhtunkhwa, Pakistan
    871.9×
  92. 91SaltilloCoahuila, Mexico
    871.9×
  93. 93Wan ChaiWan Chai, Hong Kong
    871.9×
  94. 93ChristchurchCanterbury, New Zealand
    871.9×
  95. 95PlymouthEngland, United Kingdom
    861.9×
  96. 96KalasinKalasin, Thailand
    861.9×
  97. 97GyeongjuGyeongsangbuk-do, South Korea
    861.9×
  98. 98SangjuGyeongsangbuk-do, South Korea
    851.8×
  99. 99Heroica MatamorosTamaulipas, Mexico
    851.8×
  100. 99LimaLima Province, Peru
    851.8×
  101. 101Sakon NakhonSakon Nakhon, Thailand
    841.8×
  102. 101GimcheonGyeongsangbuk-do, South Korea
    841.8×
  103. 101CopiapóAtacama, Chile
    841.8×
  104. 104Khlong LuangPathum Thani, Thailand
    841.8×
  105. 104HayangGyeongsangbuk-do, South Korea
    841.8×
  106. 104AndongGyeongsangbuk-do, South Korea
    841.8×
  107. 107YecheonGyeongsangbuk-do, South Korea
    841.8×
  108. 107DamyangJeollanam-do, South Korea
    841.8×
  109. 109Dún LaoghaireLeinster, Ireland
    831.8×
  110. 109SarajevoFederation of B&H, Bosnia and Herzegovina
    831.8×
  111. 111BangkokBangkok, Thailand
    831.8×
  112. 112Şabāḩ as SālimMubārak al Kabīr, Kuwait
    831.8×
  113. 112ErlinTaiwan, Taiwan
    831.8×
  114. 114Jacobo HunterArequipa, Peru
    831.7×
  115. 115WatertownSouth Dakota, United States
    821.7×
  116. 116NajuJeollanam-do, South Korea
    821.7×
  117. 116Jeju CityJeju-do, South Korea
    821.7×
  118. 118EisenGyeongsangbuk-do, South Korea
    821.7×
  119. 118BlaineMinnesota, United States
    821.7×
  120. 120Mueang NonthaburiNonthaburi, Thailand
    821.7×
  121. 120NanNan, Thailand
    821.7×
  122. 122HyderabadTelangana, India
    821.7×
  123. 123YeojuGyeonggi-do, South Korea
    821.7×
  124. 124WaterfordMunster, Ireland
    811.7×
  125. 124Lak SiBangkok, Thailand
    811.7×
  126. 126Samut SakhonSamut Sakhon, Thailand
    811.7×
  127. 126San Francisco De BorjaLima region, Peru
    811.7×
  128. 128KinzanChungcheongnam-do, South Korea
    811.7×
  129. 128EdinburgTexas, United States
    811.7×
  130. 130Mae SaiChiang Rai, Thailand
    811.7×
  131. 130Phra PradaengSamut Prakan, Thailand
    811.7×
  132. 130Saint PaulMinnesota, United States
    811.7×
  133. 133Donghae CityGangwon-do, South Korea
    801.7×
  134. 134ShakopeeMinnesota, United States
    801.6×
  135. 135ChangsuJeollabuk-do, South Korea
    801.6×
  136. 135CarlowLeinster, Ireland
    801.6×
  137. 137AbasoloGuanajuato, Mexico
    801.6×
  138. 138ManamaManama, Bahrain
    791.6×
  139. 139Bang KapiBangkok, Thailand
    791.6×
  140. 140Newton AbbotEngland, United Kingdom
    791.6×
  141. 141Roi EtRoi Et, Thailand
    791.6×
  142. 141Ban ChangRayong, Thailand
    791.6×
  143. 141UžiceCentral Serbia, Serbia
    791.6×
  144. 144Si Maha PhotPrachin Buri, Thailand
    791.6×
  145. 144BexleyEngland, United Kingdom
    791.6×
  146. 146YeongdongNorth Chungcheong, South Korea
    781.6×
  147. 146CanterburyEngland, United Kingdom
    781.6×
  148. 148TratTrat, Thailand
    781.6×
  149. 148Gyeongsan-siGyeongsangbuk-do, South Korea
    781.6×
  150. 148Lat KrabangBangkok, Thailand
    781.6×
  151. 148Canvey IslandEngland, United Kingdom
    781.6×
  152. 152Ban Khlong PrawetBangkok, Thailand
    781.6×
  153. 152KoesanNorth Chungcheong, South Korea
    781.6×
  154. 152DublinLeinster, Ireland
    781.6×
  155. 152ConcónValparaiso, Chile
    781.6×
  156. 156Chiang MaiChiang Mai, Thailand
    781.6×
  157. 157Ban Talat BuengChon Buri, Thailand
    771.5×
  158. 158Nong ChokBangkok, Thailand
    771.5×
  159. 159MinneapolisMinnesota, United States
    771.5×
  160. 160GraysEngland, United Kingdom
    771.5×
  161. 160CoquimboCoquimbo Region, Chile
    771.5×
  162. 162GangneungGangwon-do, South Korea
    761.5×
  163. 163ShulinTaipei, Taiwan
    761.5×
  164. 164Sai MaiBangkok, Thailand
    761.5×
  165. 165Nakhon RatchasimaNakhon Ratchasima, Thailand
    761.5×
  166. 165Viña del MarValparaiso, Chile
    761.5×
  167. 167DartfordEngland, United Kingdom
    751.5×
  168. 167BarnstapleEngland, United Kingdom
    751.5×
  169. 169Samut PrakanSamut Prakan, Thailand
    751.5×
  170. 169Terre HauteIndiana, United States
    751.5×
  171. 171JeddahMecca Region, Saudi Arabia
    751.5×
  172. 171Karachilow-cost sensorsSindh, Pakistan
    751.5×
  173. 171GumiGyeongsangbuk-do, South Korea
    751.5×
  174. 174AberdeenSouth Dakota, United States
    751.5×
  175. 175PohangGyeongsangbuk-do, South Korea
    751.5×
  176. 175Laem ChabangChon Buri, Thailand
    751.5×
  177. 177Bang Bo DistrictSamut Prakan, Thailand
    741.4×
  178. 178MumbaiMaharashtra, India
    741.4×
  179. 178WanjuJeollabuk-do, South Korea
    741.4×
  180. 178AsanChungcheongnam-do, South Korea
    741.4×
  181. 178MiryangGyeongsangnam-do, South Korea
    741.4×
  182. 178AntofagastaAntofagasta, Chile
    741.4×
  183. 183SurinSurin, Thailand
    741.4×
  184. 183SaltashEngland, United Kingdom
    741.4×
  185. 183TocopillaAntofagasta, Chile
    741.4×
  186. 186YeongjuGyeongsangbuk-do, South Korea
    741.4×
  187. 186BurnsvilleMinnesota, United States
    741.4×
  188. 186New Taipei CityTaipei, Taiwan
    741.4×
  189. 189Islamabadlow-cost sensorsIslamabad, Pakistan
    731.4×
  190. 189JumunjinGangwon-do, South Korea
    731.4×
  191. 189CheorwonGangwon-do, South Korea
    731.4×
  192. 189Cheongsong gunGyeongsangbuk-do, South Korea
    731.4×
  193. 189SouthamptonEngland, United Kingdom
    731.4×
  194. 189La SerenaCoquimbo Region, Chile
    731.4×
  195. 195ErlunTaiwan, Taiwan
    731.4×
  196. 195Chinch'ŏnNorth Chungcheong, South Korea
    731.4×
  197. 195HwawŏnDaegu, South Korea
    731.4×
  198. 198GaigeturiJeju-do, South Korea
    731.4×
  199. 199YeonilGyeongsangbuk-do, South Korea
    731.4×
  200. 199DaeguDaegu, South Korea
    731.4×

Top 200 of 2,282 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 12, 2024, smogrank.com/history/2024-05-12 (accessed 3 Oct 2026).

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