SmogRank / History / April 19, 2023

Most polluted cities on April 19, 2023

1,391 cities ranked by their average PM2.5 over the day; the worst was Piedras Negras, Mexico, at 352.0 µg/m³. Each city's own local calendar day.

← Piedras Negras 352.0 µg/m³ 300 µg/m³15 WHO 24-hour guideline
Every city ranked for April 19, 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. 1Piedras NegrasCoahuila, Mexico
    500+23.5×
  2. 2MexicaliBaja California, Mexico
    32415.8×
  3. 3Kathmandulow-cost sensorsBagmati Province, Nepal
    1907.4×
  4. 4Dhakalow-cost sensorsDhaka Division, Bangladesh
    1735.8×
  5. 5HyderabadTelangana, India
    1685.3×
  6. 6Bang Khun ThianBangkok, Thailand
    1644.9×
  7. 7BamakoBamako, Mali
    1614.7×
  8. 8BeijingBeijing, China
    1614.6×
  9. 9DelhiDelhi, India
    1604.6×
  10. 10LinaresMaule Region, Chile
    1574.3×
  11. 11HanoiHanoi, Vietnam
    1554.1×
  12. 12ManamaManama, Bahrain
    1544.0×
  13. 13TlaquepaqueJalisco, Mexico
    1523.8×
  14. 14YangonYangon, Myanmar
    1473.6×
  15. 15Lahorelow-cost sensorsPunjab, Pakistan
    1443.5×
  16. 16BaghdadBaghdad, Iraq
    1333.2×
  17. 17Nong KhaemBangkok, Thailand
    1303.2×
  18. 18NacimientoBiobio, Chile
    1283.1×
  19. 19San Mateo AtencoMéxico, Mexico
    1283.1×
  20. 20Nakhon PathomNakhon Pathom, Thailand
    1273.1×
  21. 20BangkokBangkok, Thailand
    1273.1×
  22. 22CuricóMaule Region, Chile
    1243.0×
  23. 23Samut SakhonSamut Sakhon, Thailand
    1233.0×
  24. 23San CarlosÑuble, Chile
    1233.0×
  25. 25Samut PrakanSamut Prakan, Thailand
    1212.9×
  26. 26Kinshasalow-cost sensorsKinshasa, Democratic Republic of the Congo
    1202.9×
  27. 27MumbaiMaharashtra, India
    1192.9×
  28. 28Phra PradaengSamut Prakan, Thailand
    1192.8×
  29. 28CholulaPuebla, Mexico
    1192.8×
  30. 30Mueang NonthaburiNonthaburi, Thailand
    1172.8×
  31. 31JakartaJakarta, Indonesia
    1142.7×
  32. 32Şabāḩ as SālimMubārak al Kabīr, Kuwait
    1142.7×
  33. 32CelayaGuanajuato, Mexico
    1142.7×
  34. 34PirotCentral Serbia, Serbia
    1122.7×
  35. 35Puerto VarasLos Lagos Region, Chile
    1092.6×
  36. 36Khlong LuangPathum Thani, Thailand
    1082.6×
  37. 37Bang KapiBangkok, Thailand
    1072.5×
  38. 38HualpénBiobio, Chile
    1062.5×
  39. 39SantiagoSantiago Metropolitan, Chile
    1022.4×
  40. 40Bang Bo DistrictSamut Prakan, Thailand
    1012.4×
  41. 41Ciudad NezahualcoyotlMéxico, Mexico
    1002.4×
  42. 42TolucaMéxico, Mexico
    1002.3×
  43. 43ShenyangLiaoning, China
    992.3×
  44. 44Novi PazarCentral Serbia, Serbia
    972.3×
  45. 45Tepeji del Río de OcampoHidalgo, Mexico
    972.3×
  46. 46XonacatlánMéxico, Mexico
    962.2×
  47. 47TocopillaAntofagasta, Chile
    952.2×
  48. 48TalcahuanoBiobio, Chile
    942.1×
  49. 49TalaganteSantiago Metropolitan, Chile
    942.1×
  50. 49LimaLima Province, Peru
    942.1×
  51. 51RancaguaO'Higgins Region, Chile
    932.1×
  52. 52QuinteroValparaiso, Chile
    932.1×
  53. 53ToméBiobio, Chile
    932.1×
  54. 54HualquiBiobio, Chile
    922.1×
  55. 55ValjevoCentral Serbia, Serbia
    912.1×
  56. 56KigaliKigali, Rwanda
    902.0×
  57. 56TalcaMaule Region, Chile
    902.0×
  58. 58PristinaPristina, Kosovo
    902.0×
  59. 58TemucoAraucania, Chile
    902.0×
  60. 60RengoO'Higgins Region, Chile
    902.0×
  61. 61Peshawarlow-cost sensorsKhyber Pakhtunkhwa, Pakistan
    892.0×
  62. 61GuangzhouGuangdong, China
    892.0×
  63. 63PueblaPuebla, Mexico
    892.0×
  64. 64Jastrzębie ZdrójSilesia, Poland
    892.0×
  65. 65Los ÁngelesBiobio, Chile
    881.9×
  66. 65La SerenaCoquimbo Region, Chile
    881.9×
  67. 67San Francisco TlalcilalcalpanMéxico, Mexico
    871.9×
  68. 67Puerto MonttLos Lagos Region, Chile
    871.9×
  69. 69ChillánÑuble, Chile
    871.9×
  70. 69Silao de la VictoriaGuanajuato, Mexico
    871.9×
  71. 69Ciudad Benito JuárezNuevo León, Mexico
    871.9×
  72. 72JeddahMecca Region, Saudi Arabia
    861.9×
  73. 73Puente AltoSantiago Metropolitan, Chile
    861.9×
  74. 74Santiago de QuerétaroQuerétaro, Mexico
    861.9×
  75. 75CoronelBiobio, Chile
    861.8×
  76. 75ConcónValparaiso, Chile
    861.8×
  77. 77San Francisco De BorjaLima region, Peru
    851.8×
  78. 78CuranilahueBiobio, Chile
    851.8×
  79. 79QuillotaValparaiso, Chile
    851.8×
  80. 79AricaArica y Parinacota Region, Chile
    851.8×
  81. 81ValdiviaLos Ríos Region, Chile
    841.8×
  82. 82San Andrés TuxtlaVeracruz, Mexico
    841.8×
  83. 83Viña del MarValparaiso, Chile
    841.8×
  84. 84ColomboWestern Province, Sri Lanka
    831.8×
  85. 85CoquimboCoquimbo Region, Chile
    831.8×
  86. 86RabinalBaja Verapaz, Guatemala
    821.7×
  87. 86Guatemala CityGuatemala, Guatemala
    821.7×
  88. 88ConakryConakry, Guinea
    821.7×
  89. 89BakuBaki, Azerbaijan
    821.7×
  90. 89ConcepciónBiobio, Chile
    821.7×
  91. 91Naucalpan de JuárezMéxico, Mexico
    811.7×
  92. 92CopiapóAtacama, Chile
    811.7×
  93. 93Kampalalow-cost sensorsCentral Region, Uganda
    801.7×
  94. 93AntofagastaAntofagasta, Chile
    801.7×
  95. 95RacibórzSilesia, Poland
    791.6×
  96. 96CoyhaiqueAysén, Chile
    791.6×
  97. 97TlaxcalaTlaxcala, Mexico
    781.6×
  98. 98Karachilow-cost sensorsSindh, Pakistan
    781.6×
  99. 98ZapopanJalisco, Mexico
    781.6×
  100. 100OsornoLos Lagos Region, Chile
    781.6×
  101. 101LazarevacCentral Serbia, Serbia
    781.6×
  102. 102Saint-BrieucBrittany, France
    771.6×
  103. 102Santa Anita - Los FicusLima region, Peru
    771.6×
  104. 104San Pedro de la PazBiobio, Chile
    771.5×
  105. 105CuernavacaMorelos, Mexico
    771.5×
  106. 106BrightonEngland, United Kingdom
    771.5×
  107. 107CanterburyEngland, United Kingdom
    761.5×
  108. 108ColumbiaTennessee, United States
    761.5×
  109. 109HueytownAlabama, United States
    761.5×
  110. 110La UniónLos Ríos Region, Chile
    761.5×
  111. 111KragujevacCentral Serbia, Serbia
    761.5×
  112. 112SalamancaGuanajuato, Mexico
    751.5×
  113. 113Ciudad JuárezChihuahua, Mexico
    751.5×
  114. 114Kuala LumpurKuala Lumpur, Malaysia
    751.5×
  115. 114San Juan del RíoQuerétaro, Mexico
    751.5×
  116. 114GuadalajaraJalisco, Mexico
    751.5×
  117. 117RzeszówSubcarpathia, Poland
    741.4×
  118. 117BexleyEngland, United Kingdom
    741.4×
  119. 119PortsmouthEngland, United Kingdom
    741.4×
  120. 119KrefeldNorth Rhine-Westphalia, Germany
    741.4×
  121. 119BirminghamAlabama, United States
    741.4×
  122. 122Mexico CityMexico City, Mexico
    741.4×
  123. 123ChiguayanteBiobio, Chile
    741.4×
  124. 124KhartoumKhartoum, Sudan
    741.4×
  125. 124ŻyrardówMazovia, Poland
    741.4×
  126. 126Santa CatarinaNuevo León, Mexico
    731.4×
  127. 127LotaBiobio, Chile
    731.4×
  128. 128Pachuca de SotoHidalgo, Mexico
    721.4×
  129. 129Ciudad ApodacaNuevo León, Mexico
    721.4×
  130. 130LorientBrittany, France
    721.3×
  131. 130VeracruzVeracruz, Mexico
    721.3×
  132. 132CorkMunster, Ireland
    711.3×
  133. 133Bielsko-BialaSilesia, Poland
    711.3×
  134. 134Islamabadlow-cost sensorsIslamabad, Pakistan
    711.3×
  135. 135RoeselareFlanders, Belgium
    711.3×
  136. 135Czechowice-DziedziceSilesia, Poland
    711.3×
  137. 137TarnówLesser Poland, Poland
    711.3×
  138. 137Dún LaoghaireLeinster, Ireland
    711.3×
  139. 139PlymouthEngland, United Kingdom
    701.3×
  140. 139HavířovMoravian-Silesian Region, Czechia
    701.3×
  141. 139MonterreyNuevo León, Mexico
    701.3×
  142. 142SouthamptonEngland, United Kingdom
    701.3×
  143. 142KatowiceSilesia, Poland
    701.3×
  144. 142IrapuatoGuanajuato, Mexico
    701.3×
  145. 145MenenFlanders, Belgium
    701.3×
  146. 146CalexicoCalifornia, United States
    701.3×
  147. 147NišCentral Serbia, Serbia
    691.3×
  148. 147GraysEngland, United Kingdom
    691.3×
  149. 149Addis AbabaAddis Ababa, Ethiopia
    691.3×
  150. 150KortrijkFlanders, Belgium
    691.2×
  151. 151SalorTashkent Region, Uzbekistan
    691.2×
  152. 151KoksijdeFlanders, Belgium
    691.2×
  153. 153SeafordEngland, United Kingdom
    691.2×
  154. 153IzegemFlanders, Belgium
    691.2×
  155. 153VigoGalicia, Spain
    691.2×
  156. 156CardiffWales, United Kingdom
    681.2×
  157. 157Novi SadVojvodina, Serbia
    681.2×
  158. 158NottinghamEngland, United Kingdom
    681.2×
  159. 158BarnstapleEngland, United Kingdom
    681.2×
  160. 158Frýdek-MístekMoravian-Silesian Region, Czechia
    681.2×
  161. 161Briton FerryWales, United Kingdom
    681.2×
  162. 162VannesBrittany, France
    681.2×
  163. 162BogotáBogota D.C., Colombia
    681.2×
  164. 164KutnoŁódź Voivodeship, Poland
    671.2×
  165. 165BohumínMoravian-Silesian Region, Czechia
    671.2×
  166. 165WłocławekKujawsko-Pomorskie, Poland
    671.2×
  167. 167Lagoslow-cost sensorsLagos, Nigeria
    671.2×
  168. 167Newton AbbotEngland, United Kingdom
    671.2×
  169. 167RoubaixHauts-de-France, France
    671.2×
  170. 167ŁaskŁódź Voivodeship, Poland
    671.2×
  171. 171CauquenesMaule Region, Chile
    671.2×
  172. 172HayesEngland, United Kingdom
    671.2×
  173. 172La Roche-sur-YonPays de la Loire, France
    671.2×
  174. 172CaenNormandy, France
    671.2×
  175. 175Victoria de DurangoDurango, Mexico
    661.2×
  176. 176PrešovPrešov Region, Slovakia
    661.2×
  177. 176ŁódźŁódź Voivodeship, Poland
    661.2×
  178. 176León de los AldamaGuanajuato, Mexico
    661.2×
  179. 176LemayMissouri, United States
    661.2×
  180. 180ZemunCentral Serbia, Serbia
    661.1×
  181. 180ReadingEngland, United Kingdom
    661.1×
  182. 182AntananarivoAnalamanga, Madagascar
    661.1×
  183. 182Clacton-on-SeaEngland, United Kingdom
    661.1×
  184. 184BanbridgeNorthern Ireland, United Kingdom
    661.1×
  185. 184DublinLeinster, Ireland
    661.1×
  186. 184NantesPays de la Loire, France
    661.1×
  187. 187AshgabatAshgabat, Turkmenistan
    661.1×
  188. 187LilleHauts-de-France, France
    661.1×
  189. 187CalaisHauts-de-France, France
    661.1×
  190. 187OstravaMoravian-Silesian Region, Czechia
    661.1×
  191. 187LawrencevilleGeorgia, United States
    661.1×
  192. 187Warner RobinsGeorgia, United States
    661.1×
  193. 193Royal Leamington SpaEngland, United Kingdom
    651.1×
  194. 194RennesBrittany, France
    651.1×
  195. 194DieppeNormandy, France
    651.1×
  196. 194GadsdenAlabama, United States
    651.1×
  197. 194East RidgeTennessee, United States
    651.1×
  198. 198BelgradeCentral Serbia, Serbia
    651.1×
  199. 198LondonEngland, United Kingdom
    651.1×
  200. 198MaconGeorgia, United States
    651.1×

Top 200 of 1,391 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, April 19, 2023, smogrank.com/history/2023-04-19 (accessed 2 Oct 2026).

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