SmogRank / Rankings

All 2,540 cities by PM2.5, last 24 hours

Every city with enough measurements in this window, worst first.

CPCB in India: no readings since 7 Oct (488 monitors). EEA in Spain: no readings since 10 Oct (310 monitors). Catalonia Medi Ambient I Sostenibilitat in Spain: no readings since 9 Oct (26 monitors). Their cities are missing from this board, not clean.

  1. 1486Presidente PrudenteSão Paulo, Brazil 290.3×▼292
  2. 1486AugustaGeorgia, United States 290.3×▼112
  3. 1486ConroeTexas, United States 290.3×▼408
  4. 1486BellevueNebraska, United States 290.3×▼715
  5. 1486MedinaOhio, United States 290.3×▲557
  6. 1486Eagle PassTexas, United States 290.3×▲206
  7. 1486LangfordBritish Columbia, Canada 290.3×▼52
  8. 1508ČaňaKošice Region, Slovakia 280.3×▼255
  9. 1508SakaiminatoTottori, Japan 280.3×▼213
  10. 1508Happy ValleySouth Australia, Australia 280.3×▼423
  11. 1508MostaIl-Mosta, Malta 280.3×▼252
  12. 1508SchiedamSouth Holland, The Netherlands 280.3×▲241
  13. 1508Emmenlow-cost sensorsDrenthe, The Netherlands 280.3×
  14. 1508Bestlow-cost sensorsNorth Brabant, The Netherlands 280.3×
  15. 1508Sankt ValentinLower Austria, Austria 280.3×▲199
  16. 1508Flémalle-HauteWallonia, Belgium 280.3×▼450
  17. 1508ErtveldeFlanders, Belgium 280.3×▲57
  18. 1508DammeFlanders, Belgium 280.3×▲324
  19. 1508FuldaHesse, Germany 280.3×▲617
  20. 1508ToulouseOccitanie, France 280.3×▲168
  21. 1508RoussillonAuvergne-Rhône-Alpes, France 280.3×▲169
  22. 1508RognacProvence-Alpes-Côte d'Azur, France 280.3×▲292
  23. 1508MontargisCentre-Val de Loire, France 280.3×▼210
  24. 1508CreilHauts-de-France, France 280.3×▲368
  25. 1508LitvínovÚstí nad Labem Region, Czechia 280.3×▼352
  26. 1508PoznańGreater Poland, Poland 280.3×▼384
  27. 1508Santa Maria A VicoCampania, Italy 280.3×▼157
  28. 1508Cava Dè TirreniCampania, Italy 280.3×▼369
  29. 1508GainesvilleGeorgia, United States 280.3×▲704
  30. 1508HazardKentucky, United States 280.3×▲589
  31. 1508Oak GroveKentucky, United States 280.3×▲220
  32. 1508Deer ParkTexas, United States 280.3×▼25
  33. 1508San AntonioTexas, United States 280.3×▼517
  34. 1508Presque IsleMaine, United States 280.3×▼364
  35. 1508MesaArizona, United States 280.3×▼21
  36. 1508ParadiseCalifornia, United States 280.3×▼50
  37. 1508Windsorlow-cost sensorsCalifornia, United States 280.3×
  38. 1508AlbuquerqueNew Mexico, United States 280.3×▼441
  39. 1508Carson CityNevada, United States 280.3×▲752
  40. 1508Forest GroveOregon, United States 280.3×▲104
  41. 1508La GrandeOregon, United States 280.3×▲43
  42. 1508Campbell RiverBritish Columbia, Canada 280.3×▲830
  43. 1543VolosThessaly, Greece 280.3×▼998
  44. 1543Piatra NeamţNeamț County, Romania 280.3×
  45. 1543KrompachyKošice Region, Slovakia 280.3×▼77
  46. 1543BardejovPrešov Region, Slovakia 280.3×▼490
  47. 1543Kazanlaklow-cost sensorsStara Zagora, Bulgaria 280.3×
  48. 1543SkopjeGrad Skopje, North Macedonia 280.3×▼680
  49. 1543MedemblikNorth Holland, The Netherlands 280.3×▲577
  50. 1543Helmondlow-cost sensorsNorth Brabant, The Netherlands 280.3×
  51. 1543WolfsbergCarinthia, Austria 280.3×▲163
  52. 1543Sankt PöltenLower Austria, Austria 280.3×▼15
  53. 1543FreistadtUpper Austria, Austria 280.3×▲405
  54. 1543GentFlanders, Belgium 280.3×▼200
  55. 1543BebraHesse, Germany 280.3×▲483
  56. 1543StrasbourgGrand Est, France 280.3×▼12
  57. 1543MarseilleProvence-Alpes-Côte d'Azur, France 280.3×▲589
  58. 1543GrenobleAuvergne-Rhône-Alpes, France 280.3×▲370
  59. 1543Chalon-sur-SaôneBourgogne-Franche-Comté, France 280.3×▲53
  60. 1543SenicaTrnava Region, Slovakia 280.3×▲264
  61. 1543MalmesburyWestern Cape, South Africa 280.3×▼663
  62. 1543ItaquaquecetubaSão Paulo, Brazil 280.3×▼675
  63. 1543Deerfield BeachFlorida, United States 280.3×▲60
  64. 1543Pompano BeachFlorida, United States 280.3×▲142
  65. 1543LeawoodKansas, United States 280.3×▼758
  66. 1543Bay CityMichigan, United States 280.3×▼365
  67. 1543BlairNebraska, United States 280.3×▼523
  68. 1543SuperiorWisconsin, United States 280.3×
  69. 1543BurbankCalifornia, United States 280.3×▼838
  70. 1543Seasidelow-cost sensorsCalifornia, United States 280.3×
  71. 1543SmithersBritish Columbia, Canada 280.3×▼956
  72. 1543RangioraCanterbury, New Zealand 280.3×▼291
  73. 1573AlburyNew South Wales, Australia 270.3×▼104
  74. 1573AmsterdamNorth Holland, The Netherlands 270.3×▲483
  75. 1573InnsbruckTyrol, Austria 270.3×▲53
  76. 1573HasseltFlanders, Belgium 270.3×▲58
  77. 1573WaterfordMunster, Ireland 270.3×▼857
  78. 1573VichyAuvergne-Rhône-Alpes, France 270.3×▼5
  79. 1573ReimsGrand Est, France 270.3×▲146
  80. 1573MalackyBratislava Region, Slovakia 270.3×▼152
  81. 1573Castel Maggiorelow-cost sensorsEmilia-Romagna, Italy 270.3×
  82. 1573Zagorje ob SaviMunicipality of Zagorje ob Savi, Slovenia 270.3×▼221
  83. 1573Attnang-PuchheimUpper Austria, Austria 270.3×▲274
  84. 1573PikevilleKentucky, United States 270.3×▲640
  85. 1573DentonTexas, United States 270.3×▼1031
  86. 1573Fort WorthTexas, United States 270.3×▼702
  87. 1573Mission BendTexas, United States 270.3×▲246
  88. 1573New AlbanyOhio, United States 270.3×▲351
  89. 1573TucsonArizona, United States 270.3×▼360
  90. 1573BrawleyCalifornia, United States 270.3×▼359
  91. 1573TruckeeCalifornia, United States 270.3×▲573
  92. 1573LongviewWashington, United States 270.3×▲80
  93. 1573BellevilleOntario, Canada 270.3×▲167
  94. 1573EdsonAlberta, Canada 270.3×▲479
  95. 1573SquamishBritish Columbia, Canada 270.3×▲781
  96. 1573Saint-GeorgesQuebec, Canada 270.3×
  97. 1597YorkEngland, United Kingdom 270.3×▼72
  98. 1597ZwanenburgNorth Holland, The Netherlands 270.3×
  99. 1597SpijkenisseSouth Holland, The Netherlands 270.3×▲522
  100. 1597's-GravenzandeSouth Holland, The Netherlands 270.3×▲457

Low-cost sensors: consumer units, counted only in cities with no government-grade monitor; they read close to reference monitors on the whole, but 15 to 25% high in humid air. How we use them.

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 only on their own websites. We are building the reader for China's network. Turkey's network doesn't answer requests from outside the country, so we can't read it. Most cities there are missing from this board, not clean. Why.

Use this board

SmogRank, all cities ranked by mean PM2.5 (µg/m³), last 24 hours to 13 Oct 2026, 01:00 UTC: each city's mean of its hourly values, cities measured in 18 or more of the 24 hours. Monitor data from national networks via OpenAQ and the publishers listed at smogrank.com/sources. smogrank.com/rankings. Ranked on low-cost sensors, with no reference monitor in the city: #1 Queenstown Estate, #3 Gaur, Madhesh, #5 Dubai, #6 Dhaka, #7 Multan, #8 Faisalabad, #9 Gujranwala and #10 Vientiane. Some values from Sensor.Community, ODbL. Some readings from Uzhydromet (Uzbekistan's Hydrometeorological Service); Vietnam's government monitors; Department of Environment, Nepal; Aurassure; RMCAB (Secretaría Distrital de Ambiente, Bogotá); Umhverfisstofnun (Environment Agency of Iceland); Love My Air (City and County of Denver), no reuse terms published.

Download top 10 (PNG)

You're welcome to reuse a single chart, image or figure with this citation and a link. Terms. Raw monitor readings in bulk are published by OpenAQ, under each provider's licence.

Updated 2026-10-13 01:07 UTC. Values are PM2.5 (fine particles), the median of each city's monitors, as the US AQI PM2.5 sub-index. Some low-cost readings: Sensor.Community, ODbL (data and licence). Some readings: Uzhydromet (Uzbekistan's Hydrometeorological Service); Vietnam's government monitors; Department of Environment, Nepal; Aurassure; RMCAB (Secretaría Distrital de Ambiente, Bogotá); Umhverfisstofnun (Environment Agency of Iceland); Love My Air (City and County of Denver), no reuse terms published (why we use them).