SmogRank / History / May 12, 2023

Most polluted cities on May 12, 2023

1,558 cities ranked by their average PM2.5 over the day; the worst was Lahore, Pakistan, at 180.0 µg/m³. Each city's own local calendar day.

← Lahore 180.0 µg/m³ 150 µg/m³15 WHO 24-hour guideline
Every city ranked for May 12, 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. 1Lahorelow-cost sensorsPunjab, Pakistan
    25512.0×
  2. 2NacimientoBiobio, Chile
    1927.6×
  3. 3Dhakalow-cost sensorsDhaka Division, Bangladesh
    1907.4×
  4. 4TlaquepaqueJalisco, Mexico
    1846.8×
  5. 5HyderabadTelangana, India
    1816.6×
  6. 6LinaresMaule Region, Chile
    1725.7×
  7. 7BloemfonteinFree State, South Africa
    1685.3×
  8. 8Kathmandulow-cost sensorsBagmati Province, Nepal
    1675.2×
  9. 9DelhiDelhi, India
    1645.0×
  10. 10Peshawarlow-cost sensorsKhyber Pakhtunkhwa, Pakistan
    1604.6×
  11. 11BaghdadBaghdad, Iraq
    1584.4×
  12. 12ChennaiTamil Nadu, India
    1554.1×
  13. 13CuricóMaule Region, Chile
    1554.0×
  14. 14TemucoAraucania, Chile
    1533.9×
  15. 15HualquiBiobio, Chile
    1523.8×
  16. 16CoronelBiobio, Chile
    1513.7×
  17. 17ThembisaGauteng, South Africa
    1483.6×
  18. 18BeijingBeijing, China
    1443.5×
  19. 18TalaganteSantiago Metropolitan, Chile
    1443.5×
  20. 20RancaguaO'Higgins Region, Chile
    1353.3×
  21. 21San CarlosÑuble, Chile
    1333.2×
  22. 22Hacienda Santa FeJalisco, Mexico
    1303.1×
  23. 23QuinteroValparaiso, Chile
    1283.1×
  24. 24CuranilahueBiobio, Chile
    1273.1×
  25. 25ChillánÑuble, Chile
    1243.0×
  26. 26CelayaGuanajuato, Mexico
    1212.9×
  27. 27ToméBiobio, Chile
    1182.8×
  28. 28Los ÁngelesBiobio, Chile
    1182.8×
  29. 29ChiguayanteBiobio, Chile
    1172.8×
  30. 30SantiagoSantiago Metropolitan, Chile
    1132.7×
  31. 31QuillotaValparaiso, Chile
    1132.7×
  32. 32MumbaiMaharashtra, India
    1112.6×
  33. 33Sing BuriSing Buri, Thailand
    1102.6×
  34. 34LaredoTexas, United States
    1102.6×
  35. 35Viña del MarValparaiso, Chile
    1092.6×
  36. 36AstanaAstana, Kazakhstan
    1082.6×
  37. 37DushanbeDushanbe, Tajikistan
    1062.5×
  38. 38Islamabadlow-cost sensorsIslamabad, Pakistan
    1052.5×
  39. 39EdinburgTexas, United States
    1052.5×
  40. 40TalcaMaule Region, Chile
    1042.4×
  41. 41Puerto AysénAysén, Chile
    1032.4×
  42. 42CoquimboCoquimbo Region, Chile
    1022.4×
  43. 43Ga-RankuwaNorth West, South Africa
    1022.4×
  44. 43ConcepciónBiobio, Chile
    1022.4×
  45. 45AntofagastaAntofagasta, Chile
    1012.4×
  46. 46La SerenaCoquimbo Region, Chile
    1002.4×
  47. 47ManamaManama, Bahrain
    992.3×
  48. 48KigaliKigali, Rwanda
    992.3×
  49. 48SalamancaGuanajuato, Mexico
    992.3×
  50. 50CoyhaiqueAysén, Chile
    992.3×
  51. 51Fort McMurrayAlberta, Canada
    982.3×
  52. 52HualpénBiobio, Chile
    982.3×
  53. 53Chai NatChai Nat, Thailand
    972.3×
  54. 53ConcónValparaiso, Chile
    972.3×
  55. 55SasolburgFree State, South Africa
    952.2×
  56. 55OsornoLos Lagos Region, Chile
    952.2×
  57. 55LotaBiobio, Chile
    952.2×
  58. 58CauquenesMaule Region, Chile
    932.1×
  59. 59Lop BuriLopburi, Thailand
    932.1×
  60. 60RabinalBaja Verapaz, Guatemala
    922.1×
  61. 61Addis AbabaAddis Ababa, Ethiopia
    922.1×
  62. 62MiddelburgMpumalanga, South Africa
    922.1×
  63. 63Şabāḩ as SālimMubārak al Kabīr, Kuwait
    912.0×
  64. 64Suphan BuriSuphan Buri, Thailand
    902.0×
  65. 64Guatemala CityGuatemala, Guatemala
    902.0×
  66. 66ValdiviaLos Ríos Region, Chile
    902.0×
  67. 67Naucalpan de JuárezMéxico, Mexico
    902.0×
  68. 67West MifflinPennsylvania, United States
    902.0×
  69. 69Puerto VarasLos Lagos Region, Chile
    892.0×
  70. 70KolkataWest Bengal, India
    892.0×
  71. 71Eagle PassTexas, United States
    892.0×
  72. 72Si Maha PhotPrachin Buri, Thailand
    881.9×
  73. 73Kampalalow-cost sensorsCentral Region, Uganda
    881.9×
  74. 73Puente AltoSantiago Metropolitan, Chile
    881.9×
  75. 75Bang NaBangkok, Thailand
    881.9×
  76. 75TalcahuanoBiobio, Chile
    881.9×
  77. 77Mae SaiChiang Rai, Thailand
    871.9×
  78. 77Puerto MonttLos Lagos Region, Chile
    871.9×
  79. 79Phra Nakhon Si AyutthayaPhra Nakhon Si Ayutthaya, Thailand
    861.9×
  80. 79GuangzhouGuangdong, China
    861.9×
  81. 81Khan Na YaoBangkok, Thailand
    851.8×
  82. 82SalorTashkent Region, Uzbekistan
    841.8×
  83. 82Khlong Sam WaBangkok, Thailand
    841.8×
  84. 84Wan ChaiWan Chai, Hong Kong
    841.8×
  85. 85NanNan, Thailand
    831.8×
  86. 86Grande PrairieAlberta, Canada
    831.8×
  87. 87Ciudad JuárezChihuahua, Mexico
    831.7×
  88. 88La UniónLos Ríos Region, Chile
    821.7×
  89. 89SaraburiSaraburi, Thailand
    821.7×
  90. 90ValenciennesHauts-de-France, France
    821.7×
  91. 91TexarkanaTexas, United States
    811.7×
  92. 92San AntonioTexas, United States
    811.7×
  93. 93AbasoloGuanajuato, Mexico
    811.7×
  94. 94CopiapóAtacama, Chile
    801.7×
  95. 95Khlong LuangPathum Thani, Thailand
    801.7×
  96. 96IrapuatoGuanajuato, Mexico
    801.6×
  97. 97Live OakTexas, United States
    801.6×
  98. 98Nakhon SawanNakhon Sawan, Thailand
    801.6×
  99. 98Mexico CityMexico City, Mexico
    801.6×
  100. 98HarrisburgPennsylvania, United States
    801.6×
  101. 101LancasterPennsylvania, United States
    791.6×
  102. 102Corpus ChristiTexas, United States
    791.6×
  103. 103MooreOklahoma, United States
    791.6×
  104. 104PristinaPristina, Kosovo
    781.6×
  105. 104Alto HospicioTarapacá, Chile
    781.6×
  106. 106YorkPennsylvania, United States
    781.6×
  107. 107San Pedro de la PazBiobio, Chile
    771.6×
  108. 108Kamphaeng PhetKamphaeng Phet, Thailand
    771.5×
  109. 108VictoriaCentral and Western, Hong Kong
    771.5×
  110. 110CarlislePennsylvania, United States
    771.5×
  111. 111Silao de la VictoriaGuanajuato, Mexico
    771.5×
  112. 112EdmondOklahoma, United States
    771.5×
  113. 112Fort WorthTexas, United States
    771.5×
  114. 114DentonTexas, United States
    771.5×
  115. 115PhayaoPhayao, Thailand
    761.5×
  116. 116HanoiHanoi, Vietnam
    761.5×
  117. 116Oklahoma CityOklahoma, United States
    761.5×
  118. 116SaginawTexas, United States
    761.5×
  119. 119LoeiLoei, Thailand
    761.5×
  120. 119Tuen MunTuen Mun, Hong Kong
    761.5×
  121. 121ĆuprijaCentral Serbia, Serbia
    761.5×
  122. 122AricaArica y Parinacota Region, Chile
    761.5×
  123. 122LebanonPennsylvania, United States
    761.5×
  124. 124Oak LawnIllinois, United States
    751.5×
  125. 125León de los AldamaGuanajuato, Mexico
    751.5×
  126. 126AustinTexas, United States
    751.5×
  127. 127LampangLampang, Thailand
    751.5×
  128. 128Bueng KumBangkok, Thailand
    741.4×
  129. 129Saphan SungBangkok, Thailand
    741.4×
  130. 130Kwai ChungKwai Tsing District, Hong Kong
    741.4×
  131. 130SocorroTexas, United States
    741.4×
  132. 132Bang KapiBangkok, Thailand
    741.4×
  133. 132Tsuen WanTsuen Wan, Hong Kong
    741.4×
  134. 134PhiladelphiaPennsylvania, United States
    731.4×
  135. 134Lincoln ParkMichigan, United States
    731.4×
  136. 136Nakhon RatchasimaNakhon Ratchasima, Thailand
    731.4×
  137. 136ElizabethNew Jersey, United States
    731.4×
  138. 138Novi PazarCentral Serbia, Serbia
    731.4×
  139. 138Mong KokYau Tsim Mong District, Hong Kong
    731.4×
  140. 140Tin Shui WaiYuen Long, Hong Kong
    721.4×
  141. 140San Miguel de AllendeGuanajuato, Mexico
    721.4×
  142. 142DetroitMichigan, United States
    721.4×
  143. 143RedfordMichigan, United States
    721.4×
  144. 144San Tung Chung HangIslands, Hong Kong
    721.3×
  145. 144Lat KrabangBangkok, Thailand
    721.3×
  146. 146Chiang RaiChiang Rai, Thailand
    711.3×
  147. 146YalaYala, Thailand
    711.3×
  148. 148Nakhon PathomNakhon Pathom, Thailand
    711.3×
  149. 148ReadingPennsylvania, United States
    711.3×
  150. 150KanchanaburiKanchanaburi, Thailand
    711.3×
  151. 150AllentownPennsylvania, United States
    711.3×
  152. 150BethlehemPennsylvania, United States
    711.3×
  153. 153ThabazimbiLimpopo, South Africa
    711.3×
  154. 153AnconaThe Marches, Italy
    711.3×
  155. 155ValjevoCentral Serbia, Serbia
    701.3×
  156. 156UttaraditUttaradit, Thailand
    701.3×
  157. 157OstravaMoravian-Silesian Region, Czechia
    701.3×
  158. 157SarpsborgØstfold, Norway
    701.3×
  159. 157New BrunswickNew Jersey, United States
    701.3×
  160. 157CantonOhio, United States
    701.3×
  161. 161BangkokBangkok, Thailand
    691.3×
  162. 161East ChicagoIndiana, United States
    691.3×
  163. 161ClevelandOhio, United States
    691.3×
  164. 164San Luis de la PazGuanajuato, Mexico
    691.3×
  165. 164KalamazooMichigan, United States
    691.3×
  166. 164BensalemPennsylvania, United States
    691.3×
  167. 164BanningCalifornia, United States
    691.3×
  168. 168HagerstownMaryland, United States
    691.2×
  169. 168TulsaOklahoma, United States
    691.2×
  170. 170Lak SiBangkok, Thailand
    691.2×
  171. 170Sai MaiBangkok, Thailand
    691.2×
  172. 172Mae SotTak, Thailand
    691.2×
  173. 172Sau Mau PingKwun Tong District, Hong Kong
    691.2×
  174. 174Karachilow-cost sensorsSindh, Pakistan
    681.2×
  175. 174PhetchabunPhetchabun, Thailand
    681.2×
  176. 174SpringdaleArkansas, United States
    681.2×
  177. 177TakTak, Thailand
    681.2×
  178. 177KoksijdeFlanders, Belgium
    681.2×
  179. 177CorsicanaTexas, United States
    681.2×
  180. 180CalamaAntofagasta, Chile
    681.2×
  181. 181PhraePhrae, Thailand
    681.2×
  182. 181Tai PoTai Po, Hong Kong
    681.2×
  183. 183Calumet CityIllinois, United States
    671.2×
  184. 184Las Palmas de Gran CanariaCanary Islands, Spain
    671.2×
  185. 184KaliszGreater Poland, Poland
    671.2×
  186. 184DearbornMichigan, United States
    671.2×
  187. 184EwingNew Jersey, United States
    671.2×
  188. 188GuanajuatoGuanajuato, Mexico
    671.2×
  189. 189RigaRiga, Latvia
    671.2×
  190. 189SukhothaiSukhothai, Thailand
    671.2×
  191. 189VeszprémVeszprém, Hungary
    671.2×
  192. 189NapervilleIllinois, United States
    671.2×
  193. 193RatchaburiRatchaburi, Thailand
    661.2×
  194. 193Laem ChabangChon Buri, Thailand
    661.2×
  195. 193DallasTexas, United States
    661.2×
  196. 193HammondIndiana, United States
    661.2×
  197. 197DunkirkHauts-de-France, France
    661.2×
  198. 197NesttunVestland, Norway
    661.2×
  199. 197AdaOklahoma, United States
    661.2×
  200. 197YpsilantiMichigan, United States
    661.2×

Top 200 of 1,558 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 12, 2023, smogrank.com/history/2023-05-12 (accessed 2 Oct 2026).

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