SmogRank / History / February 23, 2024

Most polluted cities on February 23, 2024

2,175 cities ranked by their average PM2.5 over the day; the worst was Tlaquepaque, Mexico, at 119.5 µg/m³. Each city's own local calendar day.

← Tlaquepaque 119.5 µg/m³ 100 µg/m³15 WHO 24-hour guideline
Every city ranked for February 23, 2024, 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. 1TlaquepaqueJalisco, Mexico
    1968.0×
  2. 2LampangLampang, Thailand
    1796.4×
  3. 3N'DjamenaN’Djaména, Chad
    1766.1×
  4. 4PirotCentral Serbia, Serbia
    1705.5×
  5. 5Dhakalow-cost sensorsDhaka Division, Bangladesh
    1685.3×
  6. 6AstanaAstana, Kazakhstan
    1624.8×
  7. 7KolkataWest Bengal, India
    1594.5×
  8. 8HyderabadTelangana, India
    1564.2×
  9. 9Mae SotTak, Thailand
    1564.2×
  10. 10DelhiDelhi, India
    1564.2×
  11. 11GuadalajaraJalisco, Mexico
    1554.1×
  12. 12MukdahanMukdahan, Thailand
    1554.0×
  13. 13YangonYangon, Myanmar
    1544.0×
  14. 14LamphunLamphun, Thailand
    1533.9×
  15. 15Ubon RatchathaniUbon Ratchathani, Thailand
    1513.7×
  16. 16YasothonYasothon, Thailand
    1493.7×
  17. 17PhayaoPhayao, Thailand
    1453.5×
  18. 18Amnat CharoenAmnat Charoen, Thailand
    1443.5×
  19. 19Kathmandulow-cost sensorsBagmati Province, Nepal
    1423.5×
  20. 20Kamphaeng PhetKamphaeng Phet, Thailand
    1413.4×
  21. 21SukhothaiSukhothai, Thailand
    1393.4×
  22. 22SalorTashkent Region, Uzbekistan
    1393.4×
  23. 23Almatylow-cost sensorsAlmaty, Kazakhstan
    1393.4×
  24. 24Sakon NakhonSakon Nakhon, Thailand
    1373.3×
  25. 25Novi PazarCentral Serbia, Serbia
    1353.3×
  26. 26Si Sa KetSi Sa Ket, Thailand
    1353.3×
  27. 27KalasinKalasin, Thailand
    1323.2×
  28. 28ShenyangLiaoning, China
    1313.2×
  29. 29NanNan, Thailand
    1313.2×
  30. 30DushanbeDushanbe, Tajikistan
    1293.1×
  31. 31Roi EtRoi Et, Thailand
    1243.0×
  32. 32HanoiHanoi, Vietnam
    1222.9×
  33. 33DziałdowoWarmia-Masuria, Poland
    1202.9×
  34. 34Peshawarlow-cost sensorsKhyber Pakhtunkhwa, Pakistan
    1192.9×
  35. 35Mae SaiChiang Rai, Thailand
    1182.8×
  36. 36Chiang MaiChiang Mai, Thailand
    1152.7×
  37. 37Islamabadlow-cost sensorsIslamabad, Pakistan
    1142.7×
  38. 38Khon KaenKhon Kaen, Thailand
    1122.7×
  39. 39Kampalalow-cost sensorsCentral Region, Uganda
    1112.6×
  40. 40Abujalow-cost sensorsFCT, Nigeria
    1082.6×
  41. 41Udon ThaniUdon Thani, Thailand
    1072.5×
  42. 41SurinSurin, Thailand
    1072.5×
  43. 43SkopjeGrad Skopje, North Macedonia
    1072.5×
  44. 44ChaiyaphumChaiyaphum, Thailand
    1052.5×
  45. 45Nong Bua LamphuNong Bua Lamphu, Thailand
    1022.4×
  46. 46PhraePhrae, Thailand
    1012.4×
  47. 46PhetchabunPhetchabun, Thailand
    1012.4×
  48. 46LoeiLoei, Thailand
    1012.4×
  49. 49ChennaiTamil Nadu, India
    1002.3×
  50. 50CelayaGuanajuato, Mexico
    992.3×
  51. 51Nakhon RatchasimaNakhon Ratchasima, Thailand
    962.2×
  52. 51BeijingBeijing, China
    962.2×
  53. 53Ciudad Benito JuárezNuevo León, Mexico
    952.2×
  54. 54DejCluj County, Romania
    942.2×
  55. 55Chiang RaiChiang Rai, Thailand
    932.1×
  56. 55Puerto MonttLos Lagos Region, Chile
    932.1×
  57. 57MumbaiMaharashtra, India
    922.1×
  58. 58Lop BuriLopburi, Thailand
    912.0×
  59. 59SalamancaGuanajuato, Mexico
    912.0×
  60. 60Si Maha PhotPrachin Buri, Thailand
    902.0×
  61. 60AguascalientesAguascalientes, Mexico
    902.0×
  62. 62WłocławekKujawsko-Pomorskie, Poland
    902.0×
  63. 63PhichitPhichit, Thailand
    892.0×
  64. 64Buri RamBuriram, Thailand
    881.9×
  65. 65ČačakCentral Serbia, Serbia
    881.9×
  66. 66Chai NatChai Nat, Thailand
    881.9×
  67. 67BucharestBucharest, Romania
    871.9×
  68. 67Ulan BatorUlaanbaatar, Mongolia
    871.9×
  69. 69NišCentral Serbia, Serbia
    861.9×
  70. 70CharlottesvilleVirginia, United States
    851.8×
  71. 71IrapuatoGuanajuato, Mexico
    831.8×
  72. 72VanderbijlparkGauteng, South Africa
    821.7×
  73. 73ThessaloníkiCentral Macedonia, Greece
    821.7×
  74. 74Sing BuriSing Buri, Thailand
    821.7×
  75. 75ZgierzŁódź Voivodeship, Poland
    821.7×
  76. 76SasolburgFree State, South Africa
    811.7×
  77. 76KanchanaburiKanchanaburi, Thailand
    811.7×
  78. 78KrielMpumalanga, South Africa
    811.7×
  79. 79Tuen MunTuen Mun, Hong Kong
    801.7×
  80. 80Wan ChaiWan Chai, Hong Kong
    801.7×
  81. 80L'Ancienne-LoretteQuebec, Canada
    801.7×
  82. 82CairoCairo, Egypt
    801.6×
  83. 83RichmondVirginia, United States
    801.6×
  84. 84KavadarciKavadarci, North Macedonia
    791.6×
  85. 85Bang NaBangkok, Thailand
    791.6×
  86. 85DurhamNorth Carolina, United States
    791.6×
  87. 85RaleighNorth Carolina, United States
    791.6×
  88. 88TocopillaAntofagasta, Chile
    791.6×
  89. 89Winston-SalemNorth Carolina, United States
    791.6×
  90. 90AranyaprathetSa Kaeo, Thailand
    781.6×
  91. 91eMbalenhleMpumalanga, South Africa
    781.6×
  92. 92Nakhon SawanNakhon Sawan, Thailand
    781.6×
  93. 92ClemmonsNorth Carolina, United States
    781.6×
  94. 94Skarżysko-KamiennaŚwiętokrzyskie, Poland
    781.6×
  95. 94OtwockMazovia, Poland
    781.6×
  96. 96StrumicaStrumica, North Macedonia
    771.5×
  97. 97VereenigingGauteng, South Africa
    771.5×
  98. 98GdyniaPomerania, Poland
    771.5×
  99. 99AntananarivoAnalamanga, Madagascar
    771.5×
  100. 100Nakhon NayokNakhon Nayok, Thailand
    761.5×
  101. 101Asunciónlow-cost sensorsAsuncion, Paraguay
    761.5×
  102. 102BrakpanGauteng, South Africa
    761.5×
  103. 103LegionowoMazovia, Poland
    751.5×
  104. 104RatchaburiRatchaburi, Thailand
    751.5×
  105. 105Cluj-NapocaCluj County, Romania
    741.4×
  106. 106UžiceCentral Serbia, Serbia
    741.4×
  107. 107AsprópyrgosAttica, Greece
    741.4×
  108. 107SaraburiSaraburi, Thailand
    741.4×
  109. 109EvatonGauteng, South Africa
    741.4×
  110. 109MedinaOhio, United States
    741.4×
  111. 111AugustówPodlasie, Poland
    741.4×
  112. 112AthensAttica, Greece
    741.4×
  113. 112CantonOhio, United States
    741.4×
  114. 114GrajewoPodlasie, Poland
    731.4×
  115. 114GreensboroNorth Carolina, United States
    731.4×
  116. 116EłkWarmia-Masuria, Poland
    731.4×
  117. 117LęborkPomerania, Poland
    731.4×
  118. 118Khlong LuangPathum Thani, Thailand
    731.4×
  119. 119PruszkówMazovia, Poland
    731.4×
  120. 119Phra Nakhon Si AyutthayaPhra Nakhon Si Ayutthaya, Thailand
    731.4×
  121. 119Puerto VarasLos Lagos Region, Chile
    731.4×
  122. 119LimaLima Province, Peru
    731.4×
  123. 123León de los AldamaGuanajuato, Mexico
    721.4×
  124. 124CayenneGuyane, French Guiana
    721.4×
  125. 125MorrisvilleNorth Carolina, United States
    721.4×
  126. 126PátraWest Greece, Greece
    721.4×
  127. 126Haskovolow-cost sensorsHaskovo, Bulgaria
    721.4×
  128. 126DearbornMichigan, United States
    721.4×
  129. 129TetovoTetovo, North Macedonia
    721.3×
  130. 129AbasoloGuanajuato, Mexico
    721.3×
  131. 131ŻyrardówMazovia, Poland
    711.3×
  132. 131SiedlceMazovia, Poland
    711.3×
  133. 133CoyhaiqueAysén, Chile
    711.3×
  134. 134LiepājaLiepaja, Latvia
    711.3×
  135. 134SuwałkiPodlasie, Poland
    711.3×
  136. 134Ban Samae DamBangkok, Thailand
    711.3×
  137. 134SarajevoFederation of B&H, Bosnia and Herzegovina
    711.3×
  138. 134DoverDelaware, United States
    711.3×
  139. 134AkronOhio, United States
    711.3×
  140. 140LexingtonNorth Carolina, United States
    711.3×
  141. 140ClevelandOhio, United States
    711.3×
  142. 140QuébecQuebec, Canada
    711.3×
  143. 143VelesVeles, North Macedonia
    701.3×
  144. 143Bang KapiBangkok, Thailand
    701.3×
  145. 145ŁukówLublin, Poland
    701.3×
  146. 145Tin Shui WaiYuen Long, Hong Kong
    701.3×
  147. 145Tai PoTai Po, Hong Kong
    701.3×
  148. 145HopewellVirginia, United States
    701.3×
  149. 145Khan Na YaoBangkok, Thailand
    701.3×
  150. 150OpoleOpole Voivodeship, Poland
    701.3×
  151. 150WestervilleOhio, United States
    701.3×
  152. 152EastpointeMichigan, United States
    701.3×
  153. 152Lat KrabangBangkok, Thailand
    701.3×
  154. 154JohannesburgGauteng, South Africa
    691.3×
  155. 154Mong KokYau Tsim Mong District, Hong Kong
    691.3×
  156. 154ColumbusOhio, United States
    691.3×
  157. 154BensalemPennsylvania, United States
    691.3×
  158. 158HickoryNorth Carolina, United States
    691.3×
  159. 159Saphan SungBangkok, Thailand
    691.2×
  160. 160JeddahMecca Region, Saudi Arabia
    691.2×
  161. 160East HamptonVirginia, United States
    691.2×
  162. 160Cleveland HeightsOhio, United States
    691.2×
  163. 163Nong ChokBangkok, Thailand
    691.2×
  164. 163YoungstownOhio, United States
    691.2×
  165. 165HualpénBiobio, Chile
    681.2×
  166. 165RedfordMichigan, United States
    681.2×
  167. 167Tsuen WanTsuen Wan, Hong Kong
    681.2×
  168. 167SantiagoSantiago Metropolitan, Chile
    681.2×
  169. 167NacimientoBiobio, Chile
    681.2×
  170. 167WarrenOhio, United States
    681.2×
  171. 171JesiThe Marches, Italy
    681.2×
  172. 171KourouGuyane, French Guiana
    681.2×
  173. 171CoronelBiobio, Chile
    681.2×
  174. 171AricaArica y Parinacota Region, Chile
    681.2×
  175. 171Sai MaiBangkok, Thailand
    681.2×
  176. 176RēzekneRēzekne, Latvia
    681.2×
  177. 176YalaYala, Thailand
    681.2×
  178. 178BetongYala, Thailand
    681.2×
  179. 178BogotáBogota D.C., Colombia
    681.2×
  180. 180SpartanburgSouth Carolina, United States
    671.2×
  181. 180Santa Anita - Los FicusLima region, Peru
    671.2×
  182. 182Shaker HeightsOhio, United States
    671.2×
  183. 183StarachowiceŚwiętokrzyskie, Poland
    671.2×
  184. 183TalcahuanoBiobio, Chile
    671.2×
  185. 185OlsztynWarmia-Masuria, Poland
    671.2×
  186. 185SmederevoCentral Serbia, Serbia
    671.2×
  187. 185Suphan BuriSuphan Buri, Thailand
    671.2×
  188. 185CopiapóAtacama, Chile
    671.2×
  189. 189Konstancin-JeziornaMazovia, Poland
    671.2×
  190. 189Hua HinPrachuap Khiri Khan, Thailand
    671.2×
  191. 189Nong KhaemBangkok, Thailand
    671.2×
  192. 192Bang Bo DistrictSamut Prakan, Thailand
    661.2×
  193. 193San CarlosÑuble, Chile
    661.2×
  194. 194Bishkeklow-cost sensorsBishkek, Kyrgyzstan
    661.1×
  195. 194BangkokBangkok, Thailand
    661.1×
  196. 194ChillánÑuble, Chile
    661.1×
  197. 197Sevlievolow-cost sensorsGabrovo, Bulgaria
    661.1×
  198. 197San Pedro de la PazBiobio, Chile
    661.1×
  199. 199KutnoŁódź Voivodeship, Poland
    661.1×
  200. 199PodgoricaPodgorica, Montenegro
    661.1×

Top 200 of 2,175 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

Not covered: the government monitoring networks of China and Turkey, which publish no terms that let us reuse their readings. Most cities there are missing from this board, not clean. Why.

Use this board

SmogRank, most polluted cities, PM2.5, February 23, 2024, smogrank.com/history/2024-02-23 (accessed 3 Oct 2026).

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