SmogRank / History / January 11, 2023

Most polluted cities on January 11, 2023

1,349 cities ranked by their average PM2.5 over the day; the worst was Lahore, Pakistan, at 289.0 µg/m³. Each city's own local calendar day.

OpenAQ's archive, where our readings come from, has almost none for this day. Cities in the United States and Europe have it from the EPA's and the European Environment Agency's own records of the same monitors; many cities elsewhere are missing from this board, not clean. Why.

Bad-air episodes during January 11, 2023. All episodes.

← Lahore 289.0 µg/m³ 200 µg/m³15 WHO 24-hour guideline
Every city ranked for January 11, 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
    42719.3×
  2. 2N'DjamenaN’Djaména, Chad
    39618.2×
  3. 3Dhakalow-cost sensorsDhaka Division, Bangladesh
    29614.7×
  4. 4DelhiDelhi, India
    27213.1×
  5. 5Abujalow-cost sensorsFCT, Nigeria
    27113.1×
  6. 6HyderabadTelangana, India
    2098.9×
  7. 7AlexandriaAlexandria, Egypt
    2018.4×
  8. 8Peshawarlow-cost sensorsKhyber Pakhtunkhwa, Pakistan
    1867.0×
  9. 9MumbaiMaharashtra, India
    1826.7×
  10. 10MariglianoCampania, Italy
    1725.7×
  11. 11Kathmandulow-cost sensorsBagmati Province, Nepal
    1624.8×
  12. 12HanoiHanoi, Vietnam
    1604.6×
  13. 13BeijingBeijing, China
    1604.6×
  14. 14BamakoBamako, Mali
    1604.6×
  15. 15Accralow-cost sensorsGreater Accra, Ghana
    1554.0×
  16. 16KigaliKigali, Rwanda
    1483.6×
  17. 17Islamabadlow-cost sensorsIslamabad, Pakistan
    1423.5×
  18. 18Karachilow-cost sensorsSindh, Pakistan
    1403.4×
  19. 19DębicaSubcarpathia, Poland
    1383.4×
  20. 20Kampalalow-cost sensorsCentral Region, Uganda
    1343.3×
  21. 21Hua HinPrachuap Khiri Khan, Thailand
    1222.9×
  22. 22AcerraCampania, Italy
    1212.9×
  23. 23Apple ValleyMinnesota, United States
    1212.9×
  24. 23BurnsvilleMinnesota, United States
    1212.9×
  25. 25Saint MichaelMinnesota, United States
    1202.9×
  26. 26Saint PaulMinnesota, United States
    1192.8×
  27. 27TetovoTetovo, North Macedonia
    1182.8×
  28. 27DushanbeDushanbe, Tajikistan
    1182.8×
  29. 29RatchaburiRatchaburi, Thailand
    1182.8×
  30. 30SukhothaiSukhothai, Thailand
    1172.8×
  31. 31MinneapolisMinnesota, United States
    1132.7×
  32. 32BihaćFederation of B&H, Bosnia and Herzegovina
    1122.7×
  33. 33SalorTashkent Region, Uzbekistan
    1112.6×
  34. 34LamphunLamphun, Thailand
    1102.6×
  35. 35Mae SotTak, Thailand
    1052.5×
  36. 36Eau ClaireWisconsin, United States
    1042.5×
  37. 37NanNan, Thailand
    1042.5×
  38. 38GostivarGostivar, North Macedonia
    1032.4×
  39. 39Bishkeklow-cost sensorsBishkek, Kyrgyzstan
    1002.4×
  40. 40UttaraditUttaradit, Thailand
    1002.4×
  41. 41Bang Khun ThianBangkok, Thailand
    992.3×
  42. 42San Felice A CancelloCampania, Italy
    992.3×
  43. 43Novo MestoUrban Municipality of Novo Mesto, Slovenia
    982.3×
  44. 44StarachowiceŚwiętokrzyskie, Poland
    972.3×
  45. 45PhraePhrae, Thailand
    972.3×
  46. 46OhridOhrid, North Macedonia
    972.2×
  47. 47BaghdadBaghdad, Iraq
    952.2×
  48. 48Bang NaBangkok, Thailand
    952.2×
  49. 48La CrosseWisconsin, United States
    952.2×
  50. 50PristinaPristina, Kosovo
    942.1×
  51. 51MielecSubcarpathia, Poland
    932.1×
  52. 52Tha YangPhetchaburi, Thailand
    932.1×
  53. 53PrilepPrilep, North Macedonia
    922.1×
  54. 53AlbanyGeorgia, United States
    922.1×
  55. 55Jastrzębie ZdrójSilesia, Poland
    922.1×
  56. 56Nocera InferioreCampania, Italy
    922.1×
  57. 57Nong KhaemBangkok, Thailand
    912.1×
  58. 58Khlong LuangPathum Thani, Thailand
    912.0×
  59. 59WaukeshaWisconsin, United States
    902.0×
  60. 60LublinLublin, Poland
    902.0×
  61. 60Surat ThaniSurat Thani, Thailand
    902.0×
  62. 62Saint CloudMinnesota, United States
    902.0×
  63. 62MilwaukeeWisconsin, United States
    902.0×
  64. 64HarrisburgPennsylvania, United States
    892.0×
  65. 65Mae SaiChiang Rai, Thailand
    892.0×
  66. 66Khlong Sam WaBangkok, Thailand
    881.9×
  67. 67TrbovljeMunicipality of Trbovlje, Slovenia
    881.9×
  68. 68KatowiceSilesia, Poland
    871.9×
  69. 69South MilwaukeeWisconsin, United States
    871.9×
  70. 70KalamazooMichigan, United States
    871.9×
  71. 71CarlislePennsylvania, United States
    871.9×
  72. 72RedfordMichigan, United States
    861.9×
  73. 73LjubljanaLjubljana, Slovenia
    861.9×
  74. 74BitolaBitola, North Macedonia
    861.9×
  75. 75Chiang RaiChiang Rai, Thailand
    861.8×
  76. 76West FargoNorth Dakota, United States
    851.8×
  77. 77NiskoSubcarpathia, Poland
    851.8×
  78. 78SkopjeGrad Skopje, North Macedonia
    841.8×
  79. 79Ban Samae DamBangkok, Thailand
    841.8×
  80. 79MadisonWisconsin, United States
    841.8×
  81. 81Iowa CityIowa, United States
    841.8×
  82. 82RacibórzSilesia, Poland
    831.8×
  83. 82LancasterPennsylvania, United States
    831.8×
  84. 84LučenecBanská Bystrica Region, Slovakia
    831.8×
  85. 84PljevljaPljevlja, Montenegro
    831.8×
  86. 86JenisonMichigan, United States
    831.8×
  87. 87Bueng KumBangkok, Thailand
    831.7×
  88. 88SaraburiSaraburi, Thailand
    821.7×
  89. 88Samut SakhonSamut Sakhon, Thailand
    821.7×
  90. 90ZionIllinois, United States
    821.7×
  91. 91RzeszówSubcarpathia, Poland
    821.7×
  92. 91Franklin ParkIllinois, United States
    821.7×
  93. 93LebanonPennsylvania, United States
    821.7×
  94. 94Cedar RapidsIowa, United States
    821.7×
  95. 95Chiang MaiChiang Mai, Thailand
    811.7×
  96. 95CaryIllinois, United States
    811.7×
  97. 95Des PlainesIllinois, United States
    811.7×
  98. 98Botevgradlow-cost sensorsSofia, Bulgaria
    801.7×
  99. 99AvellinoCampania, Italy
    801.7×
  100. 99LansingMichigan, United States
    801.7×
  101. 101AppletonWisconsin, United States
    801.6×
  102. 102PłockMazovia, Poland
    801.6×
  103. 102YorkPennsylvania, United States
    801.6×
  104. 102YpsilantiMichigan, United States
    801.6×
  105. 105Calumet CityIllinois, United States
    801.6×
  106. 106PhuketPhuket, Thailand
    791.6×
  107. 106DetroitMichigan, United States
    791.6×
  108. 108Suphan BuriSuphan Buri, Thailand
    791.6×
  109. 108ClintonIowa, United States
    791.6×
  110. 108Lincoln ParkMichigan, United States
    791.6×
  111. 111TurinPiedmont, Italy
    791.6×
  112. 111BeneventoCampania, Italy
    791.6×
  113. 111Saphan SungBangkok, Thailand
    791.6×
  114. 114BangkokBangkok, Thailand
    791.6×
  115. 115Ban ChangRayong, Thailand
    781.6×
  116. 116WolfsbergCarinthia, Austria
    781.6×
  117. 117State CollegePennsylvania, United States
    771.6×
  118. 118TarnówLesser Poland, Poland
    771.5×
  119. 119KutnoŁódź Voivodeship, Poland
    771.5×
  120. 119East ChicagoIndiana, United States
    771.5×
  121. 121ŚwiecieKujawsko-Pomorskie, Poland
    771.5×
  122. 121South BendIndiana, United States
    771.5×
  123. 121DearbornMichigan, United States
    771.5×
  124. 124KrakówLesser Poland, Poland
    771.5×
  125. 124Khan Na YaoBangkok, Thailand
    771.5×
  126. 126TakTak, Thailand
    771.5×
  127. 127KętrzynWarmia-Masuria, Poland
    761.5×
  128. 127KoprivnicaKoprivnica-Križevci, Croatia
    761.5×
  129. 127NorthbrookIllinois, United States
    761.5×
  130. 130ŻyrardówMazovia, Poland
    761.5×
  131. 131NišCentral Serbia, Serbia
    761.5×
  132. 131MolineIllinois, United States
    761.5×
  133. 133Nakhon Si ThammaratNakhon Si Thammarat, Thailand
    761.5×
  134. 133Romans-sur-IsèreAuvergne-Rhône-Alpes, France
    761.5×
  135. 133BismarckNorth Dakota, United States
    761.5×
  136. 133Lat KrabangBangkok, Thailand
    761.5×
  137. 137HammondIndiana, United States
    751.5×
  138. 138Bang KapiBangkok, Thailand
    751.5×
  139. 138DavenportIowa, United States
    751.5×
  140. 138RockfordIllinois, United States
    751.5×
  141. 141IndianapolisIndiana, United States
    751.5×
  142. 141SteubenvilleOhio, United States
    751.5×
  143. 143JasłoSubcarpathia, Poland
    751.5×
  144. 143Ban HouakhouaBokeo, Laos
    751.5×
  145. 143ToruńKujawsko-Pomorskie, Poland
    751.5×
  146. 143CeljeUrban Municipality of Celje, Slovenia
    751.5×
  147. 143DecaturIllinois, United States
    751.5×
  148. 148ŁaskŁódź Voivodeship, Poland
    741.4×
  149. 149BerounCentral Bohemia, Czechia
    741.4×
  150. 149East Saint LouisIllinois, United States
    741.4×
  151. 149Lak SiBangkok, Thailand
    741.4×
  152. 152PesaroThe Marches, Italy
    741.4×
  153. 152PtujUrban Municipality of Ptuj, Slovenia
    741.4×
  154. 154KaliszGreater Poland, Poland
    741.4×
  155. 155Sevlievolow-cost sensorsGabrovo, Bulgaria
    731.4×
  156. 155RayongRayong, Thailand
    731.4×
  157. 155ČadcaŽilina Region, Slovakia
    731.4×
  158. 158Cluj-NapocaCluj County, Romania
    731.4×
  159. 159Nakhon RatchasimaNakhon Ratchasima, Thailand
    731.4×
  160. 159Ban Khlong PrawetBangkok, Thailand
    731.4×
  161. 159AugustaGeorgia, United States
    731.4×
  162. 162TaylorMichigan, United States
    731.4×
  163. 163ValenceAuvergne-Rhône-Alpes, France
    731.4×
  164. 163WłocławekKujawsko-Pomorskie, Poland
    731.4×
  165. 165VelesVeles, North Macedonia
    721.4×
  166. 166KorçëKorçë County, Albania
    721.4×
  167. 166ColumbusGeorgia, United States
    721.4×
  168. 168RadomskoŁódź Voivodeship, Poland
    721.4×
  169. 168SpartanburgSouth Carolina, United States
    721.4×
  170. 170NapervilleIllinois, United States
    721.3×
  171. 171GjilanGjilan, Kosovo
    711.3×
  172. 171DěčínÚstí nad Labem Region, Czechia
    711.3×
  173. 171Sai MaiBangkok, Thailand
    711.3×
  174. 174Mong KokYau Tsim Mong District, Hong Kong
    711.3×
  175. 174St. LouisMissouri, United States
    711.3×
  176. 176ArlesProvence-Alpes-Côte d'Azur, France
    711.3×
  177. 177LegionowoMazovia, Poland
    711.3×
  178. 177AvignonProvence-Alpes-Côte d'Azur, France
    711.3×
  179. 177AnkenyIowa, United States
    711.3×
  180. 180Şabāḩ as SālimMubārak al Kabīr, Kuwait
    711.3×
  181. 180RadomMazovia, Poland
    711.3×
  182. 180Lop BuriLopburi, Thailand
    711.3×
  183. 180JeffersonvilleIndiana, United States
    711.3×
  184. 184LoeiLoei, Thailand
    711.3×
  185. 184SallanchesAuvergne-Rhône-Alpes, France
    711.3×
  186. 184KranjUrban Municipality of Kranj, Slovenia
    711.3×
  187. 187Nakło nad NoteciąKujawsko-Pomorskie, Poland
    701.3×
  188. 187Bielsko-BialaSilesia, Poland
    701.3×
  189. 189Bay CityMichigan, United States
    701.3×
  190. 190PułtuskMazovia, Poland
    701.3×
  191. 190KochaniKochani, North Macedonia
    701.3×
  192. 190Phra Nakhon Si AyutthayaPhra Nakhon Si Ayutthaya, Thailand
    701.3×
  193. 193EłkWarmia-Masuria, Poland
    701.3×
  194. 193PhetchabunPhetchabun, Thailand
    701.3×
  195. 195Wan ChaiWan Chai, Hong Kong
    701.3×
  196. 195Terre HauteIndiana, United States
    701.3×
  197. 195PortageIndiana, United States
    701.3×
  198. 195ReadingPennsylvania, United States
    701.3×
  199. 199Mueang NonthaburiNonthaburi, Thailand
    691.3×
  200. 199Cava Dè TirreniCampania, Italy
    691.3×

Top 200 of 1,349 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, January 11, 2023, smogrank.com/history/2023-01-11 (accessed 2 Oct 2026).

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