SmogRank / History / December 18, 2024

Most polluted cities on December 18, 2024

2,215 cities ranked by their average PM2.5 over the day; the worst was Delhi, India, at 373.0 µg/m³. Each city's own local calendar day.

Bad-air episodes during December 18, 2024. All episodes.

← Delhi 373.0 µg/m³ 300 µg/m³15 WHO 24-hour guideline
Every city ranked for December 18, 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. 1DelhiDelhi, India
    500+24.9×
  2. 2Lahorelow-cost sensorsPunjab, Pakistan
    500+24.6×
  3. 3Peshawarlow-cost sensorsKhyber Pakhtunkhwa, Pakistan
    47520.9×
  4. 4SarajevoFederation of B&H, Bosnia and Herzegovina
    37217.4×
  5. 5DushanbeDushanbe, Tajikistan
    30415.1×
  6. 6TravnikFederation of B&H, Bosnia and Herzegovina
    26812.9×
  7. 7Dhakalow-cost sensorsDhaka Division, Bangladesh
    25311.9×
  8. 8KolkataWest Bengal, India
    23410.6×
  9. 9Islamabadlow-cost sensorsIslamabad, Pakistan
    22810.2×
  10. 10PirotCentral Serbia, Serbia
    2219.7×
  11. 11Novi PazarCentral Serbia, Serbia
    1957.9×
  12. 12Kampalalow-cost sensorsCentral Region, Uganda
    1907.4×
  13. 13KraljevoCentral Serbia, Serbia
    1867.0×
  14. 14N'DjamenaN’Djaména, Chad
    1846.9×
  15. 15MumbaiMaharashtra, India
    1826.6×
  16. 16NišCentral Serbia, Serbia
    1806.5×
  17. 17ObrenovacCentral Serbia, Serbia
    1806.5×
  18. 18PančevoVojvodina, Serbia
    1796.4×
  19. 19ZemunCentral Serbia, Serbia
    1755.9×
  20. 20Kathmandulow-cost sensorsBagmati Province, Nepal
    1745.9×
  21. 21LazarevacCentral Serbia, Serbia
    1715.6×
  22. 22UžiceCentral Serbia, Serbia
    1715.6×
  23. 23SmederevoCentral Serbia, Serbia
    1715.6×
  24. 24NegotinCentral Serbia, Serbia
    1705.5×
  25. 25Zagreblow-cost sensorsZagreb, Croatia
    1685.3×
  26. 26ČačakCentral Serbia, Serbia
    1685.3×
  27. 27ValjevoCentral Serbia, Serbia
    1675.2×
  28. 28ChennaiTamil Nadu, India
    1624.8×
  29. 29DejCluj County, Romania
    1604.6×
  30. 30KragujevacCentral Serbia, Serbia
    1604.5×
  31. 31BelgradeCentral Serbia, Serbia
    1574.3×
  32. 32BihaćFederation of B&H, Bosnia and Herzegovina
    1564.2×
  33. 33MaspalomasCanary Islands, Spain
    1533.9×
  34. 34ColomboWestern Province, Sri Lanka
    1533.9×
  35. 35JeddahMecca Region, Saudi Arabia
    1513.7×
  36. 36SremčicaCentral Serbia, Serbia
    1493.7×
  37. 37Abidjanlow-cost sensorsAbidjan Autonomous District, Ivory Coast
    1473.6×
  38. 38Debrecenlow-cost sensorsHajdú-Bihar, Hungary
    1463.6×
  39. 39Ulan BatorUlaanbaatar, Mongolia
    1453.6×
  40. 40FunchalMadeira, Portugal
    1423.5×
  41. 41Santa Cruz de TenerifeCanary Islands, Spain
    1423.5×
  42. 42SalorTashkent Region, Uzbekistan
    1413.5×
  43. 43ManlleuCatalonia, Spain
    1373.3×
  44. 44LleidaCatalonia, Spain
    1353.3×
  45. 45AgüimesCanary Islands, Spain
    1343.3×
  46. 46ĆuprijaCentral Serbia, Serbia
    1333.2×
  47. 47San Francisco TlalcilalcalpanMéxico, Mexico
    1333.2×
  48. 48IngenioCanary Islands, Spain
    1313.2×
  49. 49PtujUrban Municipality of Ptuj, Slovenia
    1273.1×
  50. 50AthensAttica, Greece
    1253.0×
  51. 51CodleaBrașov County, Romania
    1253.0×
  52. 52FutogVojvodina, Serbia
    1243.0×
  53. 53Accralow-cost sensorsGreater Accra, Ghana
    1243.0×
  54. 54AronaCanary Islands, Spain
    1222.9×
  55. 55Bang NaBangkok, Thailand
    1212.9×
  56. 56Khlong Sam WaBangkok, Thailand
    1212.9×
  57. 57Nong KhaemBangkok, Thailand
    1202.9×
  58. 58Yerevanlow-cost sensorsYerevan, Armenia
    1202.9×
  59. 59San IsidroCanary Islands, Spain
    1192.9×
  60. 60Botevgradlow-cost sensorsSofia, Bulgaria
    1172.8×
  61. 61KoperUrban Municipality of Koper, Slovenia
    1162.8×
  62. 62BadgerAlaska, United States
    1162.8×
  63. 63CairoCairo, Egypt
    1152.8×
  64. 64Lak SiBangkok, Thailand
    1142.7×
  65. 65KoprivnicaKoprivnica-Križevci, Croatia
    1132.7×
  66. 66ShanghaiShanghai, China
    1132.7×
  67. 67CeljeUrban Municipality of Celje, Slovenia
    1122.7×
  68. 68Khan Na YaoBangkok, Thailand
    1112.6×
  69. 69Medina Estateslow-cost sensorsGreater Accra, Ghana
    1112.6×
  70. 70Ban Samae DamBangkok, Thailand
    1102.6×
  71. 70La OrotavaCanary Islands, Spain
    1102.6×
  72. 70Bueng KumBangkok, Thailand
    1102.6×
  73. 73Kinshasalow-cost sensorsKinshasa, Democratic Republic of the Congo
    1102.6×
  74. 74BaghdadBaghdad, Iraq
    1092.6×
  75. 75Lat KrabangBangkok, Thailand
    1082.6×
  76. 76ThessaloníkiCentral Macedonia, Greece
    1082.6×
  77. 77BangkokBangkok, Thailand
    1072.5×
  78. 77Granadilla de AbonaCanary Islands, Spain
    1072.5×
  79. 79Istanbullow-cost sensorsIstanbul, Turkey
    1072.5×
  80. 80KigaliKigali, Rwanda
    1062.5×
  81. 81Saphan SungBangkok, Thailand
    1052.5×
  82. 82Mueang NonthaburiNonthaburi, Thailand
    1042.4×
  83. 83Abujalow-cost sensorsFCT, Nigeria
    1022.4×
  84. 84Las Palmas de Gran CanariaCanary Islands, Spain
    1012.4×
  85. 85Cluj-NapocaCluj County, Romania
    1002.4×
  86. 86Ban Khlong PrawetBangkok, Thailand
    992.3×
  87. 87Bang KapiBangkok, Thailand
    982.3×
  88. 88Nong ChokBangkok, Thailand
    982.3×
  89. 89ChiguayanteBiobio, Chile
    972.3×
  90. 90Sai MaiBangkok, Thailand
    972.3×
  91. 91Ciudad NezahualcoyotlMéxico, Mexico
    952.2×
  92. 92Molina de SeguraMurcia, Spain
    952.2×
  93. 93FanlingNorth District, Hong Kong
    952.2×
  94. 94Wan ChaiWan Chai, Hong Kong
    952.2×
  95. 95CandelariaCanary Islands, Spain
    942.2×
  96. 96LjubljanaLjubljana, Slovenia
    932.1×
  97. 97AntananarivoAnalamanga, Madagascar
    922.1×
  98. 97Tuen MunTuen Mun, Hong Kong
    922.1×
  99. 99TeldeCanary Islands, Spain
    922.1×
  100. 100LučenecBanská Bystrica Region, Slovakia
    922.1×
  101. 100LiberpolisCounty of Osijek-Baranja, Croatia
    922.1×
  102. 102Novi SadVojvodina, Serbia
    922.1×
  103. 103GrazStyria, Austria
    912.0×
  104. 103NogalesSonora, Mexico
    912.0×
  105. 105Santa Cruz de la PalmaCanary Islands, Spain
    902.0×
  106. 106Almatylow-cost sensorsAlmaty, Kazakhstan
    892.0×
  107. 107TrbovljeMunicipality of Trbovlje, Slovenia
    881.9×
  108. 108PiraeusAttica, Greece
    881.9×
  109. 108Klagenfurt am WörtherseeCarinthia, Austria
    881.9×
  110. 110RuseRuse, Bulgaria
    871.9×
  111. 111ArucasCanary Islands, Spain
    871.9×
  112. 112CuencaCastille-La Mancha, Spain
    871.9×
  113. 113KazincbarcikaBorsod-Abaúj-Zemplén, Hungary
    871.9×
  114. 114OurenseGalicia, Spain
    861.9×
  115. 115Addis AbabaAddis Ababa, Ethiopia
    851.8×
  116. 116NacimientoBiobio, Chile
    851.8×
  117. 117VigoGalicia, Spain
    851.8×
  118. 118MiskolcBorsod-Abaúj-Zemplén, Hungary
    851.8×
  119. 118Collado-VillalbaMadrid, Spain
    851.8×
  120. 120ZgierzŁódź Voivodeship, Poland
    851.8×
  121. 120Jacobo HunterArequipa, Peru
    851.8×
  122. 122Novo MestoUrban Municipality of Novo Mesto, Slovenia
    851.8×
  123. 123MariborUrban Municipality of Maribor, Slovenia
    841.8×
  124. 124FuenlabradaMadrid, Spain
    841.8×
  125. 125GranadaAndalusia, Spain
    831.8×
  126. 126NyíregyházaSzabolcs-Szatmár-Bereg, Hungary
    831.8×
  127. 126San Tung Chung HangIslands, Hong Kong
    831.8×
  128. 126NogalesArizona, United States
    831.8×
  129. 129BailénAndalusia, Spain
    831.7×
  130. 130Tin Shui WaiYuen Long, Hong Kong
    821.7×
  131. 131DhahranEastern Province, Saudi Arabia
    821.7×
  132. 131ShenyangLiaoning, China
    821.7×
  133. 133ChaozhouTaiwan, Taiwan
    821.7×
  134. 133Torrejón de ArdozMadrid, Spain
    821.7×
  135. 135PrešovPrešov Region, Slovakia
    821.7×
  136. 136JinchengFukien, Taiwan
    811.7×
  137. 137ŽilinaŽilina Region, Slovakia
    811.7×
  138. 137PúchovTrenčín Region, Slovakia
    811.7×
  139. 139XinyingTaiwan, Taiwan
    811.7×
  140. 140TudelaNavarre, Spain
    801.7×
  141. 140Mexico CityMexico City, Mexico
    801.7×
  142. 142WolfsbergCarinthia, Austria
    801.7×
  143. 143ValdemoroMadrid, Spain
    801.6×
  144. 144MurciaMurcia, Spain
    801.6×
  145. 144Ciudad RealCastille-La Mancha, Spain
    801.6×
  146. 146KošiceKošice Region, Slovakia
    791.6×
  147. 146AugustówPodlasie, Poland
    791.6×
  148. 148MóstolesMadrid, Spain
    791.6×
  149. 149BucharestBucharest, Romania
    791.6×
  150. 149Puente AltoSantiago Metropolitan, Chile
    791.6×
  151. 151SevillaAndalusia, Spain
    781.6×
  152. 151TraunUpper Austria, Austria
    781.6×
  153. 153ValenciaValencia, Spain
    781.6×
  154. 153Florinlow-cost sensorsCalifornia, United States
    781.6×
  155. 153VisaliaCalifornia, United States
    781.6×
  156. 156Tai PoTai Po, Hong Kong
    781.6×
  157. 156Kwai ChungKwai Tsing District, Hong Kong
    781.6×
  158. 158AugustaGeorgia, United States
    781.6×
  159. 159Quezon Citylow-cost sensorsNational Capital Region, Philippines
    771.6×
  160. 159KlosterneuburgLower Austria, Austria
    771.6×
  161. 161GuangzhouGuangdong, China
    771.5×
  162. 161Mong KokYau Tsim Mong District, Hong Kong
    771.5×
  163. 163MunsanGyeonggi-do, South Korea
    771.5×
  164. 163GyőrGyőr-Moson-Sopron, Hungary
    771.5×
  165. 163GijónAsturias, Spain
    771.5×
  166. 166KaohsiungTakao, Taiwan
    771.5×
  167. 167ErlunTaiwan, Taiwan
    771.5×
  168. 167AlgiersAlgiers, Algeria
    771.5×
  169. 167GironaCatalonia, Spain
    771.5×
  170. 167PhoenixArizona, United States
    771.5×
  171. 171FengshanTakao, Taiwan
    761.5×
  172. 172Sha TinSha Tin, Hong Kong
    761.5×
  173. 172BellinzonaTicino, Switzerland
    761.5×
  174. 174Laudio / LlodioBasque Country, Spain
    761.5×
  175. 174TocopillaAntofagasta, Chile
    761.5×
  176. 174SantiagoSantiago Metropolitan, Chile
    761.5×
  177. 177Şabāḩ as SālimMubārak al Kabīr, Kuwait
    761.5×
  178. 177TainanTaiwan, Taiwan
    761.5×
  179. 179YangonYangon, Myanmar
    751.5×
  180. 179AricaArica y Parinacota Region, Chile
    751.5×
  181. 181IngolstadtBavaria, Germany
    751.5×
  182. 182WelsUpper Austria, Austria
    751.5×
  183. 182ZaragozaAragon, Spain
    751.5×
  184. 184VictoriaCentral and Western, Hong Kong
    751.5×
  185. 185Haskovolow-cost sensorsHaskovo, Bulgaria
    741.4×
  186. 185Sau Mau PingKwun Tong District, Hong Kong
    741.4×
  187. 187NeiliTaiwan, Taiwan
    741.4×
  188. 187ZvolenBanská Bystrica Region, Slovakia
    741.4×
  189. 187ClovisCalifornia, United States
    741.4×
  190. 190Vientianelow-cost sensorsVientiane Prefecture, Laos
    741.4×
  191. 190CórdobaAndalusia, Spain
    741.4×
  192. 190MadridMadrid, Spain
    741.4×
  193. 193AcharnésAttica, Greece
    741.4×
  194. 193PrievidzaTrenčín Region, Slovakia
    741.4×
  195. 195HandlováTrenčín Region, Slovakia
    731.4×
  196. 196Tsuen WanTsuen Wan, Hong Kong
    731.4×
  197. 196Sham Shui PoSham Shui Po District, Hong Kong
    731.4×
  198. 196Gasteiz / VitoriaBasque Country, Spain
    731.4×
  199. 196FresnoCalifornia, United States
    731.4×
  200. 200ToledoOhio, United States
    731.4×

Top 200 of 2,215 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, December 18, 2024, smogrank.com/history/2024-12-18 (accessed 3 Oct 2026).

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