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. 1679YumaArizona, United States 250.3×▼1469
  2. 1679VacavilleCalifornia, United States 250.3×▼463
  3. 1679North ValleyNew Mexico, United States 250.3×▼432
  4. 1679BeavertonOregon, United States 250.3×▼29
  5. 1679GranbyQuebec, Canada 250.3×▲335
  6. 1679VancouverBritish Columbia, Canada 250.3×▼186
  7. 1679Picnic Point-North LynnwoodWashington, United States 250.3×▲258
  8. 1708GrangeSouth Australia, Australia 240.3×▼272
  9. 1708San Pawl il-BaħarSaint Paul’s Bay, Malta 240.3×▼369
  10. 1708MansfieldEngland, United Kingdom 240.3×▼394
  11. 1708InvernessScotland, United Kingdom 240.3×▲460
  12. 1708Heerenveenlow-cost sensorsFriesland, The Netherlands 240.3×
  13. 1708Klagenfurt am WörtherseeCarinthia, Austria 240.3×▼38
  14. 1708AmstettenLower Austria, Austria 240.3×▲3
  15. 1708Reinheimlow-cost sensorsHesse, Germany 240.3×
  16. 1708KehlBaden-Wurttemberg, Germany 240.3×▲45
  17. 1708DarmstadtHesse, Germany 240.3×▲162
  18. 1708VerdunGrand Est, France 240.3×▼265
  19. 1708RouenNormandy, France 240.3×▼234
  20. 1708LavalPays de la Loire, France 240.3×▲48
  21. 1708FréjusProvence-Alpes-Côte d'Azur, France 240.3×▲287
  22. 1708DouaiHauts-de-France, France 240.3×▼113
  23. 1708HnúšťaBanská Bystrica Region, Slovakia 240.3×▼471
  24. 1708SzczecinWest Pomerania, Poland 240.3×▼108
  25. 1708KościerzynaPomerania, Poland 240.3×▼910
  26. 1708OsloOslo, Norway 240.3×
  27. 1708FilderstadtBaden-Wurttemberg, Germany 240.3×▲387
  28. 1708Les AbymesGuadeloupe, Guadeloupe 240.3×▲252
  29. 1708PrienLouisiana, United States 240.3×▼422
  30. 1708LawtonOklahoma, United States 240.3×▼743
  31. 1708Timberwood ParkTexas, United States 240.3×▼441
  32. 1708PainesvilleOhio, United States 240.3×▲363
  33. 1708BanningCalifornia, United States 240.3×▲67
  34. 1708LancasterCalifornia, United States 240.3×▼304
  35. 1708TemeculaCalifornia, United States 240.3×▼524
  36. 1708ThorntonColorado, United States 240.3×▼399
  37. 1708Gardnerville RanchosNevada, United States 240.3×▲395
  38. 1708MontréalQuebec, Canada 240.3×▼189
  39. 1708Trois-RivièresQuebec, Canada 240.3×▼216
  40. 1740Vranov nad TopľouPrešov Region, Slovakia 240.3×▼218
  41. 1740Sevlievolow-cost sensorsGabrovo, Bulgaria 240.3×
  42. 1740Winterthurlow-cost sensorsZurich, Switzerland 240.3×▲491
  43. 1740MödlingLower Austria, Austria 240.3×▲90
  44. 1740HalleinSalzburg, Austria 240.3×▼113
  45. 1740ZaventemFlanders, Belgium 240.3×▼329
  46. 1740Heverleelow-cost sensorsFlanders, Belgium 240.3×
  47. 1740AarschotFlanders, Belgium 240.3×▲11
  48. 1740Wendlingen am Neckarlow-cost sensorsBaden-Wurttemberg, Germany 240.3×
  49. 1740TitzNorth Rhine-Westphalia, Germany 240.3×▼174
  50. 1740Neuenburg am RheinBaden-Wurttemberg, Germany 240.3×▼327
  51. 1740GrevenmacherGrevenmacher, Luxembourg 240.3×▲287
  52. 1740Montceau-les-MinesBourgogne-Franche-Comté, France 240.3×▼349
  53. 1740DreuxCentre-Val de Loire, France 240.3×▼168
  54. 1740AuxerreBourgogne-Franche-Comté, France 240.3×▼322
  55. 1740AlbiOccitanie, France 240.3×▼103
  56. 1740Bolognalow-cost sensorsEmilia-Romagna, Italy 240.3×
  57. 1740Murska SobotaUrban Municipality of Murska Sobota, Slovenia 240.3×▼414
  58. 1740ReykjavíkCapital Region, Iceland 240.3×▲574
  59. 1740Kansas CityMissouri, United States 240.3×▼723
  60. 1740RaymoreMissouri, United States 240.3×▼839
  61. 1740AustinTexas, United States 240.3×▼518
  62. 1740AkronOhio, United States 240.3×▲359
  63. 1740CalexicoCalifornia, United States 240.3×
  64. 1740Inglewoodlow-cost sensorsCalifornia, United States 240.3×▼984
  65. 1740YrekaCalifornia, United States 240.3×▲188
  66. 1740Twin FallsIdaho, United States 240.3×▲365
  67. 1740Rapid CitySouth Dakota, United States 240.3×▼626
  68. 1740BellinghamWashington, United States 240.3×▲486
  69. 1740TulalipWashington, United States 240.3×▼250
  70. 1740Parry SoundOntario, Canada 240.3×▲232
  71. 1740Sorel-TracyQuebec, Canada 240.3×▼334
  72. 1772Asenovgradlow-cost sensorsPlovdiv, Bulgaria 230.3×
  73. 1772RostusaMavrovo and Rostuša, North Macedonia 230.3×▼277
  74. 1772SundsvallVästernorrland, Sweden 230.3×▲617
  75. 1772MaassluisSouth Holland, The Netherlands 230.3×▲397
  76. 1772ViennaVienna, Austria 230.3×▼22
  77. 1772Groß-EnzersdorfLower Austria, Austria 230.3×▲59
  78. 1772CottbusBrandenburg, Germany 230.3×▲217
  79. 1772Bernau bei BerlinBrandenburg, Germany 230.3×▼139
  80. 1772CorkMunster, Ireland 230.3×▲181
  81. 1772Saint-QuentinHauts-de-France, France 230.3×▼54
  82. 1772Romans-sur-IsèreAuvergne-Rhône-Alpes, France 230.3×▲101
  83. 1772MontaubanOccitanie, France 230.3×▼406
  84. 1772LimogesNew Aquitaine, France 230.3×▼179
  85. 1772JonageAuvergne-Rhône-Alpes, France 230.3×▼15
  86. 1772ÉvreuxNormandy, France 230.3×▼178
  87. 1772DenainHauts-de-France, France 230.3×▲31
  88. 1772BogatyniaLower Silesia, Poland 230.3×▼376
  89. 1772TrbovljeMunicipality of Trbovlje, Slovenia 230.3×▼134
  90. 1772CeljeUrban Municipality of Celje, Slovenia 230.3×▼267
  91. 1772MarigotSaint Martin 230.3×▲463
  92. 1772DavieFlorida, United States 230.3×▲40
  93. 1772Missouri CityTexas, United States 230.3×▼195
  94. 1772SeabrookTexas, United States 230.3×▼83
  95. 1772FillmoreCalifornia, United States 230.3×▼913
  96. 1772TempeArizona, United States 230.3×▼369
  97. 1772AnthonyNew Mexico, United States 230.3×▼627
  98. 1772RenoNevada, United States 230.3×▲469
  99. 1772Rivière-des-Prairies–Pointe-aux-TremblesQuebec, Canada 230.3×▼460
  100. 1800Dunedinlow-cost sensorsOtago, New Zealand 230.3×▲315

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).