SmogRank / History / January 1, 2025

Most polluted cities on January 1, 2025

2,193 cities ranked by their average PM2.5 over the day; the worst was Lahore, Pakistan, at 309.0 µg/m³. Each city's own local calendar day.

Bad-air episodes during January 1, 2025. All episodes.

← Lahore 309.0 µg/m³ 300 µg/m³15 WHO 24-hour guideline
Every city ranked for January 1, 2025, 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
    46720.6×
  2. 2Islamabadlow-cost sensorsIslamabad, Pakistan
    30215.1×
  3. 2Dhakalow-cost sensorsDhaka Division, Bangladesh
    30215.1×
  4. 4Kampalalow-cost sensorsCentral Region, Uganda
    29114.4×
  5. 5DelhiDelhi, India
    28514.0×
  6. 6SarajevoFederation of B&H, Bosnia and Herzegovina
    27213.1×
  7. 7Peshawarlow-cost sensorsKhyber Pakhtunkhwa, Pakistan
    25712.1×
  8. 8PristinaPristina, Kosovo
    25512.0×
  9. 9PhoenixArizona, United States
    24211.1×
  10. 10DushanbeDushanbe, Tajikistan
    2179.5×
  11. 11AugsburgBavaria, Germany
    2179.4×
  12. 12MesaArizona, United States
    2129.1×
  13. 13KolkataWest Bengal, India
    2078.8×
  14. 13Kempten (Allgäu)Bavaria, Germany
    2078.8×
  15. 15MunichBavaria, Germany
    2018.4×
  16. 16NogalesArizona, United States
    1957.9×
  17. 17Zagreblow-cost sensorsZagreb, Croatia
    1917.5×
  18. 18Ciudad NezahualcoyotlMéxico, Mexico
    1877.1×
  19. 19Botevgradlow-cost sensorsSofia, Bulgaria
    1856.9×
  20. 20VeszprémVeszprém, Hungary
    1846.8×
  21. 21BadgerAlaska, United States
    1806.5×
  22. 22HyderabadTelangana, India
    1806.4×
  23. 23BihaćFederation of B&H, Bosnia and Herzegovina
    1786.3×
  24. 24Kathmandulow-cost sensorsBagmati Province, Nepal
    1776.2×
  25. 25MumbaiMaharashtra, India
    1776.2×
  26. 26Almatylow-cost sensorsAlmaty, Kazakhstan
    1766.1×
  27. 27RužomberokŽilina Region, Slovakia
    1756.0×
  28. 28TempeArizona, United States
    1725.7×
  29. 29Winterthurlow-cost sensorsZurich, Switzerland
    1715.6×
  30. 30N'DjamenaN’Djaména, Chad
    1715.6×
  31. 31Kinshasalow-cost sensorsKinshasa, Democratic Republic of the Congo
    1715.6×
  32. 32AguascalientesAguascalientes, Mexico
    1705.5×
  33. 33TübingenBaden-Wurttemberg, Germany
    1705.5×
  34. 34ChennaiTamil Nadu, India
    1695.4×
  35. 35IngolstadtBavaria, Germany
    1695.4×
  36. 36AthensAttica, Greece
    1695.4×
  37. 37BaghdadBaghdad, Iraq
    1675.2×
  38. 38Liptovský Mikulᚎilina Region, Slovakia
    1665.1×
  39. 39KigaliKigali, Rwanda
    1655.1×
  40. 39CeljeUrban Municipality of Celje, Slovenia
    1655.1×
  41. 41WormsRheinland-Pfalz, Germany
    1655.0×
  42. 42Jurupa ValleyCalifornia, United States
    1655.0×
  43. 43Klagenfurt am WörtherseeCarinthia, Austria
    1655.0×
  44. 44NurembergBavaria, Germany
    1645.0×
  45. 45MartinŽilina Region, Slovakia
    1644.9×
  46. 46SalorTashkent Region, Uzbekistan
    1634.9×
  47. 47GlendaleArizona, United States
    1634.9×
  48. 48LjubljanaLjubljana, Slovenia
    1624.7×
  49. 49BambergBavaria, Germany
    1594.4×
  50. 50KoperUrban Municipality of Koper, Slovenia
    1584.3×
  51. 51ThessaloníkiCentral Macedonia, Greece
    1564.2×
  52. 52TijuanaBaja California, Mexico
    1564.1×
  53. 53TraunreutBavaria, Germany
    1544.0×
  54. 54Novo MestoUrban Municipality of Novo Mesto, Slovenia
    1544.0×
  55. 55Dimitrovgradlow-cost sensorsHaskovo, Bulgaria
    1544.0×
  56. 55MariborUrban Municipality of Maribor, Slovenia
    1544.0×
  57. 58ReutlingenBaden-Wurttemberg, Germany
    1523.8×
  58. 59PtujUrban Municipality of Ptuj, Slovenia
    1523.8×
  59. 60Quezon Citylow-cost sensorsNational Capital Region, Philippines
    1523.8×
  60. 61WürzburgBavaria, Germany
    1523.8×
  61. 62CairoCairo, Egypt
    1513.7×
  62. 63SpeyerRheinland-Pfalz, Germany
    1483.6×
  63. 64CraiovaDolj, Romania
    1473.6×
  64. 65GrazStyria, Austria
    1443.5×
  65. 66FengshanTakao, Taiwan
    1433.5×
  66. 66ManlleuCatalonia, Spain
    1433.5×
  67. 68StuttgartBaden-Wurttemberg, Germany
    1433.5×
  68. 69Mexico CityMexico City, Mexico
    1403.4×
  69. 70Haskovolow-cost sensorsHaskovo, Bulgaria
    1403.4×
  70. 70KaohsiungTakao, Taiwan
    1403.4×
  71. 72GuangzhouGuangdong, China
    1403.4×
  72. 73AalenBaden-Wurttemberg, Germany
    1393.4×
  73. 74AnaheimCalifornia, United States
    1393.4×
  74. 75ComptonCalifornia, United States
    1393.4×
  75. 76HeilbronnBaden-Wurttemberg, Germany
    1373.3×
  76. 77Istanbullow-cost sensorsIstanbul, Turkey
    1373.3×
  77. 77BurbankCalifornia, United States
    1373.3×
  78. 79TrbovljeMunicipality of Trbovlje, Slovenia
    1363.3×
  79. 80ChaozhouTaiwan, Taiwan
    1343.3×
  80. 80FilderstadtBaden-Wurttemberg, Germany
    1343.3×
  81. 82Chula VistaCalifornia, United States
    1343.2×
  82. 83RiversideCalifornia, United States
    1333.2×
  83. 84Debrecenlow-cost sensorsHajdú-Bihar, Hungary
    1333.2×
  84. 84FairbanksAlaska, United States
    1333.2×
  85. 86LinzUpper Austria, Austria
    1323.2×
  86. 87PátraWest Greece, Greece
    1313.2×
  87. 88KaunasKaunas, Lithuania
    1303.1×
  88. 89Iloilolow-cost sensorsWestern Visayas, Philippines
    1283.1×
  89. 89Molina de SeguraMurcia, Spain
    1283.1×
  90. 91Neu-UlmBavaria, Germany
    1273.1×
  91. 92NogalesSonora, Mexico
    1263.0×
  92. 93BurghausenBavaria, Germany
    1253.0×
  93. 95DouliuTaiwan, Taiwan
    1253.0×
  94. 95Saphan SungBangkok, Thailand
    1253.0×
  95. 97Khlong Sam WaBangkok, Thailand
    1243.0×
  96. 98Abidjanlow-cost sensorsAbidjan Autonomous District, Ivory Coast
    1243.0×
  97. 99Khan Na YaoBangkok, Thailand
    1233.0×
  98. 100Sevlievolow-cost sensorsGabrovo, Bulgaria
    1222.9×
  99. 101Long BeachCalifornia, United States
    1222.9×
  100. 102LudwigsburgBaden-Wurttemberg, Germany
    1212.9×
  101. 103InnsbruckTyrol, Austria
    1202.9×
  102. 103ZnojmoSouth Moravian, Czechia
    1202.9×
  103. 103Santa Anita - Los FicusLima region, Peru
    1202.9×
  104. 106WolfsbergCarinthia, Austria
    1202.9×
  105. 107FresnoCalifornia, United States
    1192.9×
  106. 108Bueng KumBangkok, Thailand
    1182.8×
  107. 109ZürichZurich, Switzerland
    1182.8×
  108. 110Bang KapiBangkok, Thailand
    1182.8×
  109. 111YongkangTaiwan, Taiwan
    1172.8×
  110. 112TainanTaiwan, Taiwan
    1162.8×
  111. 112VictoriaCentral and Western, Hong Kong
    1162.8×
  112. 114Nong KhaemBangkok, Thailand
    1152.7×
  113. 114Chiayi CityTaiwan, Taiwan
    1152.7×
  114. 116XinyingTaiwan, Taiwan
    1152.7×
  115. 117KranjUrban Municipality of Kranj, Slovenia
    1142.7×
  116. 118Lat KrabangBangkok, Thailand
    1132.7×
  117. 119LimaLima Province, Peru
    1132.7×
  118. 120Dubailow-cost sensorsDubai, United Arab Emirates
    1122.7×
  119. 120Ban Samae DamBangkok, Thailand
    1122.7×
  120. 120Tuen MunTuen Mun, Hong Kong
    1122.7×
  121. 123Banská BystricaBanská Bystrica Region, Slovakia
    1112.6×
  122. 125Accralow-cost sensorsGreater Accra, Ghana
    1092.6×
  123. 126ZhushanTaiwan, Taiwan
    1092.6×
  124. 127Nong ChokBangkok, Thailand
    1082.6×
  125. 127Bang NaBangkok, Thailand
    1082.6×
  126. 129PassauBavaria, Germany
    1072.5×
  127. 130AnsfeldenUpper Austria, Austria
    1062.5×
  128. 131Lak SiBangkok, Thailand
    1062.5×
  129. 133Wan ChaiWan Chai, Hong Kong
    1062.5×
  130. 134PforzheimBaden-Wurttemberg, Germany
    1052.5×
  131. 135Hradec KrálovéHradec Králové Region, Czechia
    1052.5×
  132. 135CalexicoCalifornia, United States
    1052.5×
  133. 137PiraeusAttica, Greece
    1042.5×
  134. 138CodleaBrașov County, Romania
    1042.5×
  135. 139NantouTaiwan, Taiwan
    1042.4×
  136. 140The HagueSouth Holland, The Netherlands
    1032.4×
  137. 140BadenLower Austria, Austria
    1032.4×
  138. 142PraguePrague, Czechia
    1022.4×
  139. 143Naucalpan de JuárezMéxico, Mexico
    1022.4×
  140. 144AlgiersAlgiers, Algeria
    1022.4×
  141. 145YangonYangon, Myanmar
    1022.4×
  142. 145PerchtoldsdorfLower Austria, Austria
    1022.4×
  143. 147Ban Khlong PrawetBangkok, Thailand
    1012.4×
  144. 147Tin Shui WaiYuen Long, Hong Kong
    1012.4×
  145. 149TraunUpper Austria, Austria
    1012.4×
  146. 150Sai MaiBangkok, Thailand
    1002.4×
  147. 151BeigangTaiwan, Taiwan
    992.3×
  148. 151San Tung Chung HangIslands, Hong Kong
    992.3×
  149. 151GyőrGyőr-Moson-Sopron, Hungary
    992.3×
  150. 154ErlunTaiwan, Taiwan
    982.3×
  151. 154Saalfelden am Steinernen MeerSalzburg, Austria
    982.3×
  152. 156Tsuen WanTsuen Wan, Hong Kong
    982.3×
  153. 157FriedrichshafenBaden-Wurttemberg, Germany
    972.3×
  154. 158JinchengFukien, Taiwan
    972.3×
  155. 159AnsbachBavaria, Germany
    972.2×
  156. 159TucsonArizona, United States
    972.2×
  157. 159SocorroTexas, United States
    972.2×
  158. 162BangkokBangkok, Thailand
    972.2×
  159. 163Mueang NonthaburiNonthaburi, Thailand
    962.2×
  160. 163HerrenbergBaden-Wurttemberg, Germany
    962.2×
  161. 165San Francisco De BorjaLima region, Peru
    962.2×
  162. 166Kwai ChungKwai Tsing District, Hong Kong
    962.2×
  163. 167YuanlinTaiwan, Taiwan
    962.2×
  164. 168Medina Estateslow-cost sensorsGreater Accra, Ghana
    952.2×
  165. 168KrakówLesser Poland, Poland
    952.2×
  166. 170El CajonCalifornia, United States
    952.2×
  167. 170Los AngelesCalifornia, United States
    952.2×
  168. 172ViennaVienna, Austria
    952.2×
  169. 172San DiegoCalifornia, United States
    952.2×
  170. 174LindauBavaria, Germany
    952.2×
  171. 174HandlováTrenčín Region, Slovakia
    952.2×
  172. 176ValdemoroMadrid, Spain
    942.2×
  173. 176VisaliaCalifornia, United States
    942.2×
  174. 178BaselBasel-City, Switzerland
    942.1×
  175. 178ŽilinaŽilina Region, Slovakia
    942.1×
  176. 180Tai PoTai Po, Hong Kong
    932.1×
  177. 180WelsUpper Austria, Austria
    932.1×
  178. 182HafnarfjörðurCapital Region, Iceland
    932.1×
  179. 183TaibaoTaiwan, Taiwan
    932.1×
  180. 183KlosterneuburgLower Austria, Austria
    932.1×
  181. 185WeidenBavaria, Germany
    932.1×
  182. 185České BudějoviceSouth Bohemian Region, Czechia
    932.1×
  183. 187MaranaArizona, United States
    922.1×
  184. 188PécsBaranya, Hungary
    922.1×
  185. 189Sham Shui PoSham Shui Po District, Hong Kong
    922.1×
  186. 190Baden-BadenBaden-Wurttemberg, Germany
    912.1×
  187. 191BellinzonaTicino, Switzerland
    912.0×
  188. 192MurciaMurcia, Spain
    912.0×
  189. 192FontanaCalifornia, United States
    912.0×
  190. 194PardubicePardubice Region, Czechia
    902.0×
  191. 195ErlinTaiwan, Taiwan
    902.0×
  192. 195FanlingNorth District, Hong Kong
    902.0×
  193. 197Schwandorf in BayernBavaria, Germany
    892.0×
  194. 198Sau Mau PingKwun Tong District, Hong Kong
    892.0×
  195. 198EnschedeOverijssel, The Netherlands
    892.0×
  196. 198ChiguayanteBiobio, Chile
    892.0×

Top 200 of 2,193 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 1, 2025, smogrank.com/history/2025-01-01 (accessed 2 Oct 2026).

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