SmogRank / History / April 14, 2023

Most polluted cities on April 14, 2023

1,241 cities ranked by their average PM2.5 over the day; the worst was San Luis Potosí, Mexico, at 971.0 µg/m³. Each city's own local calendar day.

← San Luis Potosí 971.0 µg/m³ 900 µg/m³15 WHO 24-hour guideline
Every city ranked for April 14, 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. 1San Luis PotosíSan Luis Potosí, Mexico
    500+64.7×
  2. 2CoyhaiqueAysén, Chile
    2179.4×
  3. 3Dhakalow-cost sensorsDhaka Division, Bangladesh
    2038.5×
  4. 4Kathmandulow-cost sensorsBagmati Province, Nepal
    1877.1×
  5. 5DelhiDelhi, India
    1806.5×
  6. 6ShenyangLiaoning, China
    1725.7×
  7. 7BeijingBeijing, China
    1685.3×
  8. 8Peshawarlow-cost sensorsKhyber Pakhtunkhwa, Pakistan
    1655.1×
  9. 9Lahorelow-cost sensorsPunjab, Pakistan
    1624.8×
  10. 10YangonYangon, Myanmar
    1574.2×
  11. 11BamakoBamako, Mali
    1564.2×
  12. 12Bang Khun ThianBangkok, Thailand
    1544.0×
  13. 13HyderabadTelangana, India
    1533.9×
  14. 14TlaquepaqueJalisco, Mexico
    1523.8×
  15. 15Tha BoNong Khai, Thailand
    1523.8×
  16. 16Puerto AysénAysén, Chile
    1513.7×
  17. 17KhartoumKhartoum, Sudan
    1493.7×
  18. 18AshgabatAshgabat, Turkmenistan
    1333.2×
  19. 19Ciudad Benito JuárezNuevo León, Mexico
    1303.1×
  20. 20Nakhon PathomNakhon Pathom, Thailand
    1283.1×
  21. 21OsornoLos Lagos Region, Chile
    1273.1×
  22. 22BangkokBangkok, Thailand
    1273.1×
  23. 23Nong KhaemBangkok, Thailand
    1253.0×
  24. 24Samut PrakanSamut Prakan, Thailand
    1222.9×
  25. 25CelayaGuanajuato, Mexico
    1212.9×
  26. 26SzegedCsongrád, Hungary
    1182.8×
  27. 26Islamabadlow-cost sensorsIslamabad, Pakistan
    1182.8×
  28. 28Phra PradaengSamut Prakan, Thailand
    1172.8×
  29. 29CholulaPuebla, Mexico
    1162.8×
  30. 30Mueang NonthaburiNonthaburi, Thailand
    1162.8×
  31. 31Samut SakhonSamut Sakhon, Thailand
    1142.7×
  32. 31Bang KapiBangkok, Thailand
    1142.7×
  33. 33GuangzhouGuangdong, China
    1132.7×
  34. 34RabinalBaja Verapaz, Guatemala
    1092.6×
  35. 34Guatemala CityGuatemala, Guatemala
    1092.6×
  36. 36Khlong LuangPathum Thani, Thailand
    1092.6×
  37. 37La UniónLos Ríos Region, Chile
    1082.6×
  38. 38Puerto VarasLos Lagos Region, Chile
    1062.5×
  39. 39ManamaManama, Bahrain
    1052.5×
  40. 40ZapopanJalisco, Mexico
    1042.5×
  41. 41HanoiHanoi, Vietnam
    1032.4×
  42. 42NacimientoBiobio, Chile
    992.3×
  43. 43GuadalajaraJalisco, Mexico
    962.2×
  44. 44MexicaliBaja California, Mexico
    962.2×
  45. 45RancaguaO'Higgins Region, Chile
    942.2×
  46. 46Kampalalow-cost sensorsCentral Region, Uganda
    912.1×
  47. 46MumbaiMaharashtra, India
    912.1×
  48. 48Ulu BedokSingapore
    902.0×
  49. 49LinaresMaule Region, Chile
    881.9×
  50. 50XonacatlánMéxico, Mexico
    881.9×
  51. 51San CarlosÑuble, Chile
    881.9×
  52. 52ValdiviaLos Ríos Region, Chile
    881.9×
  53. 53HavířovMoravian-Silesian Region, Czechia
    871.9×
  54. 54ColomboWestern Province, Sri Lanka
    861.9×
  55. 55VeracruzVeracruz, Mexico
    851.8×
  56. 56Puerto MonttLos Lagos Region, Chile
    851.8×
  57. 57OstravaMoravian-Silesian Region, Czechia
    851.8×
  58. 58TolucaMéxico, Mexico
    851.8×
  59. 59RengoO'Higgins Region, Chile
    841.8×
  60. 60San Mateo AtencoMéxico, Mexico
    841.8×
  61. 61ClevelandOhio, United States
    841.8×
  62. 62Tepeji del Río de OcampoHidalgo, Mexico
    831.8×
  63. 63Valley StationKentucky, United States
    831.8×
  64. 64PristinaPristina, Kosovo
    831.8×
  65. 64Frýdek-MístekMoravian-Silesian Region, Czechia
    831.8×
  66. 66IndianapolisIndiana, United States
    831.7×
  67. 67ChillánÑuble, Chile
    821.7×
  68. 68ConakryConakry, Guinea
    821.7×
  69. 69Queenstown Estatelow-cost sensorsSingapore
    811.7×
  70. 69MonterreyNuevo León, Mexico
    811.7×
  71. 71SalorTashkent Region, Uzbekistan
    801.7×
  72. 71SalamancaGuanajuato, Mexico
    801.7×
  73. 73San Francisco TlalcilalcalpanMéxico, Mexico
    801.7×
  74. 74Valašské MeziříčíZlín, Czechia
    801.6×
  75. 74Ciudad ApodacaNuevo León, Mexico
    801.6×
  76. 76Santiago de QuerétaroQuerétaro, Mexico
    801.6×
  77. 77BohumínMoravian-Silesian Region, Czechia
    801.6×
  78. 77CuricóMaule Region, Chile
    801.6×
  79. 79Ciudad NezahualcoyotlMéxico, Mexico
    791.6×
  80. 80Český TěšínMoravian-Silesian Region, Czechia
    791.6×
  81. 81Pachuca de SotoHidalgo, Mexico
    791.6×
  82. 81AricaArica y Parinacota Region, Chile
    791.6×
  83. 83Almatylow-cost sensorsAlmaty, Kazakhstan
    781.6×
  84. 84Puente AltoSantiago Metropolitan, Chile
    781.6×
  85. 84DearbornMichigan, United States
    781.6×
  86. 86San Andrés TuxtlaVeracruz, Mexico
    771.6×
  87. 87AntananarivoAnalamanga, Madagascar
    771.5×
  88. 87PueblaPuebla, Mexico
    771.5×
  89. 89DushanbeDushanbe, Tajikistan
    771.5×
  90. 89HualquiBiobio, Chile
    771.5×
  91. 91RedfordMichigan, United States
    761.5×
  92. 92Karachilow-cost sensorsSindh, Pakistan
    761.5×
  93. 92JakartaJakarta, Indonesia
    761.5×
  94. 92BelmopanCayo District, Belize
    761.5×
  95. 92DetroitMichigan, United States
    761.5×
  96. 96Naucalpan de JuárezMéxico, Mexico
    761.5×
  97. 96Santa CatarinaNuevo León, Mexico
    761.5×
  98. 98Abujalow-cost sensorsFCT, Nigeria
    751.5×
  99. 99CauquenesMaule Region, Chile
    751.5×
  100. 100Los ÁngelesBiobio, Chile
    751.5×
  101. 100East ChicagoIndiana, United States
    751.5×
  102. 102WarrenOhio, United States
    741.4×
  103. 103Cadereyta JiménezNuevo León, Mexico
    731.4×
  104. 104TalcaMaule Region, Chile
    731.4×
  105. 105Grand RapidsMichigan, United States
    721.4×
  106. 106Oak LawnIllinois, United States
    721.4×
  107. 107SpringfieldMassachusetts, United States
    711.3×
  108. 107YpsilantiMichigan, United States
    711.3×
  109. 109TemucoAraucania, Chile
    711.3×
  110. 109CoronelBiobio, Chile
    711.3×
  111. 111León de los AldamaGuanajuato, Mexico
    711.3×
  112. 112BellevilleOntario, Canada
    701.3×
  113. 113HualpénBiobio, Chile
    701.3×
  114. 114ToméBiobio, Chile
    701.3×
  115. 114AntofagastaAntofagasta, Chile
    701.3×
  116. 114BuffaloNew York, United States
    701.3×
  117. 114KitchenerOntario, Canada
    701.3×
  118. 118Ciudad JuárezChihuahua, Mexico
    701.3×
  119. 119JenisonMichigan, United States
    701.3×
  120. 120Ciudad General EscobedoNuevo León, Mexico
    691.3×
  121. 120St. ThomasOntario, Canada
    691.3×
  122. 122NišCentral Serbia, Serbia
    691.3×
  123. 122SantiagoSantiago Metropolitan, Chile
    691.3×
  124. 122New HavenConnecticut, United States
    691.3×
  125. 125ScrantonPennsylvania, United States
    691.2×
  126. 126HammondIndiana, United States
    691.2×
  127. 127BogotáBogota D.C., Colombia
    681.2×
  128. 127GarcíaNuevo León, Mexico
    681.2×
  129. 127AkronOhio, United States
    681.2×
  130. 127CantonOhio, United States
    681.2×
  131. 131Lagoslow-cost sensorsLagos, Nigeria
    681.2×
  132. 132BridgeportConnecticut, United States
    681.2×
  133. 133CuernavacaMorelos, Mexico
    681.2×
  134. 133DublinOhio, United States
    681.2×
  135. 135TaylorMichigan, United States
    681.2×
  136. 136Ang Mo Kio New TownSingapore
    671.2×
  137. 136TalcahuanoBiobio, Chile
    671.2×
  138. 136YoungstownOhio, United States
    671.2×
  139. 139QuillotaValparaiso, Chile
    671.2×
  140. 139Winston-SalemNorth Carolina, United States
    671.2×
  141. 139NewburghNew York, United States
    671.2×
  142. 142AthensAttica, Greece
    671.2×
  143. 142Túxpam de Rodríguez CanoVeracruz, Mexico
    671.2×
  144. 142Mexico CityMexico City, Mexico
    671.2×
  145. 142FlintMichigan, United States
    671.2×
  146. 142AlbanyNew York, United States
    671.2×
  147. 147ZionIllinois, United States
    671.2×
  148. 147Eau ClaireWisconsin, United States
    671.2×
  149. 147BarrieOntario, Canada
    671.2×
  150. 150CuranilahueBiobio, Chile
    671.2×
  151. 150DanburyConnecticut, United States
    671.2×
  152. 150BrocktonMassachusetts, United States
    671.2×
  153. 153CoatzacoalcosVeracruz, Mexico
    661.2×
  154. 153LotaBiobio, Chile
    661.2×
  155. 153Victoria de DurangoDurango, Mexico
    661.2×
  156. 153ElizabethNew Jersey, United States
    661.2×
  157. 157QuinteroValparaiso, Chile
    661.2×
  158. 157San Luis de la PazGuanajuato, Mexico
    661.2×
  159. 157LansingMichigan, United States
    661.2×
  160. 160Frankfurt (Oder)Brandenburg, Germany
    661.1×
  161. 160LancasterPennsylvania, United States
    661.1×
  162. 162ThessaloníkiCentral Macedonia, Greece
    661.1×
  163. 162HuelvaAndalusia, Spain
    661.1×
  164. 162San Miguel de AllendeGuanajuato, Mexico
    661.1×
  165. 162IrapuatoGuanajuato, Mexico
    661.1×
  166. 162Port HuronMichigan, United States
    661.1×
  167. 162RochesterMinnesota, United States
    661.1×
  168. 168VisbyGotland, Sweden
    661.1×
  169. 168ConcepciónBiobio, Chile
    661.1×
  170. 170CopiapóAtacama, Chile
    661.1×
  171. 170ChiguayanteBiobio, Chile
    661.1×
  172. 172TocopillaAntofagasta, Chile
    651.1×
  173. 172PeterboroughOntario, Canada
    651.1×
  174. 174IaşiIași County, Romania
    651.1×
  175. 174HarrisburgPennsylvania, United States
    651.1×
  176. 176AcharnésAttica, Greece
    651.1×
  177. 176CoquimboCoquimbo Region, Chile
    651.1×
  178. 176WorcesterMassachusetts, United States
    651.1×
  179. 176New York CityNew York, United States
    651.1×
  180. 180Kuala LumpurKuala Lumpur, Malaysia
    651.1×
  181. 180La SerenaCoquimbo Region, Chile
    651.1×
  182. 180Calumet CityIllinois, United States
    651.1×
  183. 183ConcónValparaiso, Chile
    651.1×
  184. 184JeddahMecca Region, Saudi Arabia
    641.1×
  185. 184AsprópyrgosAttica, Greece
    641.1×
  186. 186Viña del MarValparaiso, Chile
    641.1×
  187. 186GuanajuatoGuanajuato, Mexico
    641.1×
  188. 186ClemmonsNorth Carolina, United States
    641.1×
  189. 186EriePennsylvania, United States
    641.1×
  190. 186La CrosseWisconsin, United States
    641.1×
  191. 191Schwedt (Oder)Brandenburg, Germany
    641.1×
  192. 191Terre HauteIndiana, United States
    641.1×
  193. 193BostonMassachusetts, United States
    641.1×
  194. 194Abidjanlow-cost sensorsAbidjan Autonomous District, Ivory Coast
    641.1×
  195. 194CalamaAntofagasta, Chile
    641.1×
  196. 194JeffersonvilleIndiana, United States
    641.1×
  197. 194HartfordConnecticut, United States
    641.1×
  198. 198BrantfordOntario, Canada
    631.0×
  199. 198San Pedro de la PazBiobio, Chile
    631.0×
  200. 200BaghdadBaghdad, Iraq
    631.0×

Top 200 of 1,241 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, April 14, 2023, smogrank.com/history/2023-04-14 (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.