SmogRank / History / January 19, 2023

Most polluted cities on January 19, 2023

1,200 cities ranked by their average PM2.5 over the day; the worst was Gómez Palacio, Mexico, at 504.7 µg/m³. Each city's own local calendar day.

Bad-air episodes during January 19, 2023. All episodes.

← Gómez Palacio 504.7 µg/m³ 500 µg/m³15 WHO 24-hour guideline
Every city ranked for January 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. 1Gómez PalacioDurango, Mexico
    500+33.6×
  2. 2Bishkeklow-cost sensorsBishkek, Kyrgyzstan
    47320.8×
  3. 3DelhiDelhi, India
    29814.9×
  4. 4Dhakalow-cost sensorsDhaka Division, Bangladesh
    28914.3×
  5. 5DushanbeDushanbe, Tajikistan
    28814.2×
  6. 6Peshawarlow-cost sensorsKhyber Pakhtunkhwa, Pakistan
    27313.2×
  7. 7MumbaiMaharashtra, India
    26312.5×
  8. 8Abujalow-cost sensorsFCT, Nigeria
    24011.0×
  9. 9SalorTashkent Region, Uzbekistan
    23110.4×
  10. 10Almatylow-cost sensorsAlmaty, Kazakhstan
    22810.2×
  11. 11Lahorelow-cost sensorsPunjab, Pakistan
    2179.5×
  12. 12Islamabadlow-cost sensorsIslamabad, Pakistan
    1927.6×
  13. 13AshgabatAshgabat, Turkmenistan
    1806.5×
  14. 14HanoiHanoi, Vietnam
    1756.0×
  15. 15Kathmandulow-cost sensorsBagmati Province, Nepal
    1695.4×
  16. 16Karachilow-cost sensorsSindh, Pakistan
    1655.1×
  17. 17KigaliKigali, Rwanda
    1614.7×
  18. 18N'DjamenaN’Djaména, Chad
    1584.3×
  19. 19TlaquepaqueJalisco, Mexico
    1564.2×
  20. 20GuadalajaraJalisco, Mexico
    1554.1×
  21. 21San Mateo AtencoMéxico, Mexico
    1554.1×
  22. 22YangonYangon, Myanmar
    1544.0×
  23. 23MexicaliBaja California, Mexico
    1533.9×
  24. 24HyderabadTelangana, India
    1533.9×
  25. 25BamakoBamako, Mali
    1513.7×
  26. 26Hacienda Santa FeJalisco, Mexico
    1513.7×
  27. 27San Francisco TlalcilalcalpanMéxico, Mexico
    1433.5×
  28. 28ToruńKujawsko-Pomorskie, Poland
    1423.5×
  29. 29Mae SaiChiang Rai, Thailand
    1353.3×
  30. 30ShanghaiShanghai, China
    1343.3×
  31. 31RatchaburiRatchaburi, Thailand
    1333.2×
  32. 32Jastrzębie ZdrójSilesia, Poland
    1303.1×
  33. 33Chiang MaiChiang Mai, Thailand
    1283.1×
  34. 34BakuBaki, Azerbaijan
    1273.1×
  35. 35LamphunLamphun, Thailand
    1273.1×
  36. 35ColomboWestern Province, Sri Lanka
    1273.1×
  37. 37WłocławekKujawsko-Pomorskie, Poland
    1273.1×
  38. 38AlexandriaAlexandria, Egypt
    1212.9×
  39. 39Chiang RaiChiang Rai, Thailand
    1212.9×
  40. 40CholulaPuebla, Mexico
    1212.9×
  41. 41BohumínMoravian-Silesian Region, Czechia
    1202.9×
  42. 42KutnoŁódź Voivodeship, Poland
    1202.9×
  43. 43SalamancaGuanajuato, Mexico
    1182.8×
  44. 44NanNan, Thailand
    1172.8×
  45. 45PueblaPuebla, Mexico
    1162.8×
  46. 46Ciudad NezahualcoyotlMéxico, Mexico
    1162.8×
  47. 47XonacatlánMéxico, Mexico
    1152.8×
  48. 48Accralow-cost sensorsGreater Accra, Ghana
    1152.7×
  49. 49TolucaMéxico, Mexico
    1152.7×
  50. 50BadgerAlaska, United States
    1132.7×
  51. 51CelayaGuanajuato, Mexico
    1102.6×
  52. 52ZgierzŁódź Voivodeship, Poland
    1102.6×
  53. 52ŚwiecieKujawsko-Pomorskie, Poland
    1102.6×
  54. 54KatowiceSilesia, Poland
    1092.6×
  55. 55PristinaPristina, Kosovo
    1092.6×
  56. 56RadomMazovia, Poland
    1082.6×
  57. 56Mae SotTak, Thailand
    1082.6×
  58. 58Villa Poeta José Gálvez BarrenecheaLima region, Peru
    1082.5×
  59. 59LampangLampang, Thailand
    1072.5×
  60. 60PhayaoPhayao, Thailand
    1062.5×
  61. 61RacibórzSilesia, Poland
    1052.5×
  62. 62Ecatepec de MorelosMéxico, Mexico
    1052.5×
  63. 63PhichitPhichit, Thailand
    1052.5×
  64. 63PłockMazovia, Poland
    1052.5×
  65. 65Kampalalow-cost sensorsCentral Region, Uganda
    1042.5×
  66. 66ŁaskŁódź Voivodeship, Poland
    1042.4×
  67. 67LimaLima Province, Peru
    1032.4×
  68. 68Bang Khun ThianBangkok, Thailand
    1022.4×
  69. 68TocopillaAntofagasta, Chile
    1022.4×
  70. 70StarachowiceŚwiętokrzyskie, Poland
    1022.4×
  71. 70ZapopanJalisco, Mexico
    1022.4×
  72. 72Zacatepec de HidalgoMorelos, Mexico
    1012.4×
  73. 73Samut SakhonSamut Sakhon, Thailand
    992.3×
  74. 73Santa Cruz de TenerifeCanary Islands, Spain
    992.3×
  75. 75Abidjanlow-cost sensorsAbidjan Autonomous District, Ivory Coast
    992.3×
  76. 75IrapuatoGuanajuato, Mexico
    992.3×
  77. 77SzamotułyGreater Poland, Poland
    982.3×
  78. 78KrakówLesser Poland, Poland
    982.3×
  79. 79Bielsko-BialaSilesia, Poland
    982.3×
  80. 80UttaraditUttaradit, Thailand
    972.3×
  81. 81CalexicoCalifornia, United States
    972.3×
  82. 82Tha YangPhetchaburi, Thailand
    972.3×
  83. 82Wan ChaiWan Chai, Hong Kong
    972.3×
  84. 84Nong KhaemBangkok, Thailand
    972.2×
  85. 84San Juan del RíoQuerétaro, Mexico
    972.2×
  86. 86LublinLublin, Poland
    972.2×
  87. 87LęborkPomerania, Poland
    962.2×
  88. 88BaghdadBaghdad, Iraq
    962.2×
  89. 89BitolaBitola, North Macedonia
    952.2×
  90. 90San Salvador TizatlalliMéxico, Mexico
    942.2×
  91. 91Ga-RankuwaNorth West, South Africa
    942.1×
  92. 92ŻyrardówMazovia, Poland
    932.1×
  93. 93BloemfonteinFree State, South Africa
    932.1×
  94. 94Mexico CityMexico City, Mexico
    932.1×
  95. 95Nakhon PathomNakhon Pathom, Thailand
    932.1×
  96. 95NacimientoBiobio, Chile
    932.1×
  97. 97Khlong LuangPathum Thani, Thailand
    932.1×
  98. 98Tepeji del Río de OcampoHidalgo, Mexico
    922.1×
  99. 99Naucalpan de JuárezMéxico, Mexico
    912.0×
  100. 100TarnówLesser Poland, Poland
    912.0×
  101. 101PoznańGreater Poland, Poland
    902.0×
  102. 102Ban Samae DamBangkok, Thailand
    892.0×
  103. 103SaraburiSaraburi, Thailand
    892.0×
  104. 104AguascalientesAguascalientes, Mexico
    881.9×
  105. 105San Luis PotosíSan Luis Potosí, Mexico
    881.9×
  106. 106León de los AldamaGuanajuato, Mexico
    881.9×
  107. 106Bueng KumBangkok, Thailand
    881.9×
  108. 108Ciudad Benito JuárezNuevo León, Mexico
    881.9×
  109. 109GdyniaPomerania, Poland
    871.9×
  110. 110Lat KrabangBangkok, Thailand
    871.9×
  111. 111BydgoszczKujawsko-Pomorskie, Poland
    871.9×
  112. 112Lak SiBangkok, Thailand
    871.9×
  113. 113HavířovMoravian-Silesian Region, Czechia
    871.9×
  114. 114Santiago de QuerétaroQuerétaro, Mexico
    861.9×
  115. 115Bang NaBangkok, Thailand
    861.9×
  116. 116Hua HinPrachuap Khiri Khan, Thailand
    851.8×
  117. 116Tin Shui WaiYuen Long, Hong Kong
    851.8×
  118. 118SantiagoSantiago Metropolitan, Chile
    851.8×
  119. 119Mong KokYau Tsim Mong District, Hong Kong
    851.8×
  120. 120OtwockMazovia, Poland
    841.8×
  121. 120AbasoloGuanajuato, Mexico
    841.8×
  122. 122Suphan BuriSuphan Buri, Thailand
    841.8×
  123. 123GuangzhouGuangdong, China
    841.8×
  124. 124JeddahMecca Region, Saudi Arabia
    841.8×
  125. 125BangkokBangkok, Thailand
    831.8×
  126. 125BeijingBeijing, China
    831.8×
  127. 125Sai MaiBangkok, Thailand
    831.8×
  128. 128PułtuskMazovia, Poland
    831.8×
  129. 128Nakhon SawanNakhon Sawan, Thailand
    831.8×
  130. 130NišCentral Serbia, Serbia
    831.8×
  131. 131Kędzierzyn-KoźleOpole Voivodeship, Poland
    831.7×
  132. 132GdańskPomerania, Poland
    831.7×
  133. 133Puente AltoSantiago Metropolitan, Chile
    821.7×
  134. 134PruszkówMazovia, Poland
    821.7×
  135. 135Bang Bo DistrictSamut Prakan, Thailand
    821.7×
  136. 135Pachuca de SotoHidalgo, Mexico
    821.7×
  137. 137Český TěšínMoravian-Silesian Region, Czechia
    811.7×
  138. 138VictoriaCentral and Western, Hong Kong
    811.7×
  139. 139Bang KapiBangkok, Thailand
    811.7×
  140. 139Khan Na YaoBangkok, Thailand
    811.7×
  141. 141LoeiLoei, Thailand
    811.7×
  142. 142Mueang NonthaburiNonthaburi, Thailand
    811.7×
  143. 142MonacoMunicipality of Monaco, Monaco
    811.7×
  144. 144Tsuen WanTsuen Wan, Hong Kong
    801.7×
  145. 145MielecSubcarpathia, Poland
    801.6×
  146. 145KętrzynWarmia-Masuria, Poland
    801.6×
  147. 145Kwai ChungKwai Tsing District, Hong Kong
    801.6×
  148. 145DěčínÚstí nad Labem Region, Czechia
    801.6×
  149. 145RancaguaO'Higgins Region, Chile
    801.6×
  150. 150Jelenia GóraLower Silesia, Poland
    801.6×
  151. 151FanlingNorth District, Hong Kong
    801.6×
  152. 151HualpénBiobio, Chile
    801.6×
  153. 153Nakhon RatchasimaNakhon Ratchasima, Thailand
    791.6×
  154. 154Zielona GóraLubusz, Poland
    791.6×
  155. 154OpoleOpole Voivodeship, Poland
    791.6×
  156. 156Si Maha PhotPrachin Buri, Thailand
    791.6×
  157. 157Şabāḩ as SālimMubārak al Kabīr, Kuwait
    791.6×
  158. 157Frýdek-MístekMoravian-Silesian Region, Czechia
    791.6×
  159. 159KrapkowiceOpole Voivodeship, Poland
    791.6×
  160. 159Czechowice-DziedziceSilesia, Poland
    791.6×
  161. 161PhetchabunPhetchabun, Thailand
    781.6×
  162. 162eMbalenhleMpumalanga, South Africa
    781.6×
  163. 162WrocławLower Silesia, Poland
    781.6×
  164. 164Tai PoTai Po, Hong Kong
    781.6×
  165. 164TalaganteSantiago Metropolitan, Chile
    781.6×
  166. 166PinetownKwaZulu-Natal, South Africa
    781.6×
  167. 167San CarlosÑuble, Chile
    781.6×
  168. 168CoronelBiobio, Chile
    771.5×
  169. 169Ban Khlong PrawetBangkok, Thailand
    771.5×
  170. 169Sha TinSha Tin, Hong Kong
    771.5×
  171. 171Sau Mau PingKwun Tong District, Hong Kong
    771.5×
  172. 171ŁódźŁódź Voivodeship, Poland
    771.5×
  173. 171AricaArica y Parinacota Region, Chile
    771.5×
  174. 174Los ÁngelesBiobio, Chile
    771.5×
  175. 175Phra Nakhon Si AyutthayaPhra Nakhon Si Ayutthaya, Thailand
    761.5×
  176. 176KhartoumKhartoum, Sudan
    761.5×
  177. 176Viña del MarValparaiso, Chile
    761.5×
  178. 178Ban Talat BuengChon Buri, Thailand
    761.5×
  179. 179NiskoSubcarpathia, Poland
    761.5×
  180. 180OlomoucOlomouc Region, Czechia
    761.5×
  181. 181San Andrés TuxtlaVeracruz, Mexico
    751.5×
  182. 181CuranilahueBiobio, Chile
    751.5×
  183. 183OstravaMoravian-Silesian Region, Czechia
    751.5×
  184. 184ChisinauChișinău Municipality, Moldova
    741.4×
  185. 184WawerMazovia, Poland
    741.4×
  186. 184San Francisco De BorjaLima region, Peru
    741.4×
  187. 187LinaresMaule Region, Chile
    741.4×
  188. 188WarsawMazovia, Poland
    741.4×
  189. 188KanchanaburiKanchanaburi, Thailand
    741.4×
  190. 188RengoO'Higgins Region, Chile
    741.4×
  191. 191SiedlceMazovia, Poland
    741.4×
  192. 191RayongRayong, Thailand
    741.4×
  193. 191Phra PradaengSamut Prakan, Thailand
    741.4×
  194. 191QuinteroValparaiso, Chile
    741.4×
  195. 195CuricóMaule Region, Chile
    741.4×
  196. 196NairobiNairobi County, Kenya
    741.4×
  197. 196San Pedro de la PazBiobio, Chile
    741.4×
  198. 198RužomberokŽilina Region, Slovakia
    731.4×
  199. 198OurenseGalicia, Spain
    731.4×
  200. 198Ciudad ApodacaNuevo León, Mexico
    731.4×

Top 200 of 1,200 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, January 19, 2023, smogrank.com/history/2023-01-19 (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.