SmogRank / Rankings

All 2,654 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. 1998GlasgowScotland, United Kingdom 210.3×▲151
  2. 1998BrightlingseaEngland, United Kingdom 210.3×▲194
  3. 1998KarlsruheBaden-Wurttemberg, Germany 210.3×▲86
  4. 1998VesoulBourgogne-Franche-Comté, France 210.3×
  5. 1998CrollesAuvergne-Rhône-Alpes, France 210.3×▲278
  6. 1998Clermont-FerrandAuvergne-Rhône-Alpes, France 210.3×▲375
  7. 1998ChâteaurouxCentre-Val de Loire, France 210.3×▼370
  8. 1998BastiaCorsica, France 210.3×▲376
  9. 1998les EscaldesEscaldes-Engordany, Andorra 210.3×▲279
  10. 1998BratislavaBratislava Region, Slovakia 210.3×▼103
  11. 1998SokolovCarlsbad Region, Czechia 210.3×▲320
  12. 1998GdyniaPomerania, Poland 210.3×▼1157
  13. 1998LjubljanaLjubljana, Slovenia 210.3×▼730
  14. 1998FilderstadtBaden-Wurttemberg, Germany 210.3×▲244
  15. 1998KourouGuyane, French Guiana 210.3×▲405
  16. 1998Santo AndréSão Paulo, Brazil 210.3×▼896
  17. 1998Wake Forestlow-cost sensorsNorth Carolina, United States 210.3×▼134
  18. 1998YoungstownOhio, United States 210.3×▲306
  19. 1998GlendaleArizona, United States 210.3×▲70
  20. 1998Palo Altolow-cost sensorsCalifornia, United States 210.3×▼8
  21. 1998VictorvilleCalifornia, United States 210.3×▼585
  22. 1998Hawaiian Paradise ParkHawaii, United States 210.3×▲147
  23. 1998CranbrookBritish Columbia, Canada 210.3×▼433
  24. 1998Kennedy TownshipPennsylvania, United States 210.3×▲315
  25. 2025OrangeNew South Wales, Australia 210.2×▼878
  26. 2025Market DeepingEngland, United Kingdom 210.2×▲164
  27. 2025LiverpoolEngland, United Kingdom 210.2×▼148
  28. 2025BaselBasel-City, Switzerland 210.2×▼20
  29. 2025Wiener NeustadtLower Austria, Austria 210.2×▲97
  30. 2025WieslochBaden-Wurttemberg, Germany 210.2×▼103
  31. 2025PotsdamBrandenburg, Germany 210.2×▼13
  32. 2025Nürtingenlow-cost sensorsBaden-Wurttemberg, Germany 210.2×
  33. 2025AalenBaden-Wurttemberg, Germany 210.2×▲209
  34. 2025NîmesOccitanie, France 210.2×▲291
  35. 2025Fos-sur-MerProvence-Alpes-Côte d'Azur, France 210.2×▲331
  36. 2025ÉtampesÎle-de-France, France 210.2×▲316
  37. 2025Parmalow-cost sensorsEmilia-Romagna, Italy 210.2×
  38. 2025FayettevilleNorth Carolina, United States 210.2×▼317
  39. 2025BeltonTexas, United States 210.2×▼682
  40. 2025TrentonNew Jersey, United States 210.2×▼345
  41. 2025El CentroCalifornia, United States 210.2×
  42. 2025Los Banoslow-cost sensorsCalifornia, United States 210.2×▼69
  43. 2025AlbanyOregon, United States 210.2×▼67
  44. 2025MillcreekUtah, United States 210.2×▼66
  45. 2025RidgefieldWashington, United States 210.2×▼33
  46. 2025CornwallOntario, Canada 210.2×▼407
  47. 2025Greater SudburyOntario, Canada 210.2×▼31
  48. 2025Port CoquitlamBritish Columbia, Canada 210.2×▲48
  49. 2025St. AlbertAlberta, Canada 210.2×▲85
  50. 2050Veliko Tŭrnovolow-cost sensorsVeliko Tarnovo, Bulgaria 200.2×▼994
  51. 2050Gabrovolow-cost sensorsGabrovo, Bulgaria 200.2×▼853
  52. 2050Burgaslow-cost sensorsBurgas, Bulgaria 200.2×
  53. 2050MaidstoneEngland, United Kingdom 200.2×▼694
  54. 2050LutonEngland, United Kingdom 200.2×▼174
  55. 2050Burton upon TrentEngland, United Kingdom 200.2×
  56. 2050HärnösandVästernorrland, Sweden 200.2×▲457
  57. 2050LienzTyrol, Austria 200.2×▼168
  58. 2050GlashüttenHesse, Germany 200.2×▲387
  59. 2050Frankfurt (Oder)Brandenburg, Germany 200.2×▼354
  60. 2050Detmoldlow-cost sensorsNorth Rhine-Westphalia, Germany 200.2×
  61. 2050Biberach an der RißBaden-Wurttemberg, Germany 200.2×▲183
  62. 2050Bernau bei BerlinBrandenburg, Germany 200.2×▼292
  63. 2050Bad Driburglow-cost sensorsNorth Rhine-Westphalia, Germany 200.2×
  64. 2050ValenceAuvergne-Rhône-Alpes, France 200.2×▲110
  65. 2050TroyesGrand Est, France 200.2×▲150
  66. 2050Baume-les-DamesBourgogne-Franche-Comté, France 200.2×▼27
  67. 2050PorsgrunnTelemark, Norway 200.2×
  68. 2050RaleighNorth Carolina, United States 200.2×▲163
  69. 2050Roanoke RapidsNorth Carolina, United States 200.2×▲13
  70. 2050HelotesTexas, United States 200.2×▼706
  71. 2050Green ValleyArizona, United States 200.2×▼144
  72. 2050Brightonlow-cost sensorsColorado, United States 200.2×
  73. 2050Lakewoodlow-cost sensorsColorado, United States 200.2×
  74. 2050LubbockTexas, United States 200.2×▼405
  75. 2050MedfordOregon, United States 200.2×▲130
  76. 2050StaytonOregon, United States 200.2×▼509
  77. 2050AberdeenWashington, United States 200.2×▲94
  78. 2050PeterboroughOntario, Canada 200.2×▲58
  79. 2079Tolyattilow-cost sensorsSamara Oblast, Russia 190.2×
  80. 2079Naujoji AkmeneSiauliai, Lithuania 190.2×▼802
  81. 2079Gorna Oryahovitsalow-cost sensorsVeliko Tarnovo, Bulgaria 190.2×▼685
  82. 2079GreenockScotland, United Kingdom 190.2×▲257
  83. 2079CoventryEngland, United Kingdom 190.2×▲1
  84. 2079KreuzlingenThurgau, Switzerland 190.2×▲40
  85. 2079ÖstersundJämtland, Sweden 190.2×▲408
  86. 2079Hainburg an der DonauLower Austria, Austria 190.2×▼326
  87. 2079GänserndorfLower Austria, Austria 190.2×▼69
  88. 2079Riemstlow-cost sensorsFlanders, Belgium 190.2×
  89. 2079TauberbischofsheimBaden-Wurttemberg, Germany 190.2×▲190
  90. 2079PforzheimBaden-Wurttemberg, Germany 190.2×▼232
  91. 2079NeubrandenburgMecklenburg-Vorpommern, Germany 190.2×▼323
  92. 2079FriedrichshafenBaden-Wurttemberg, Germany 190.2×▲119
  93. 2079Saint-ChamondAuvergne-Rhône-Alpes, France 190.2×▲322
  94. 2079Mont-de-MarsanNew Aquitaine, France 190.2×▲84
  95. 2079ArlesProvence-Alpes-Côte d'Azur, France 190.2×▲128
  96. 2079Žiar nad HronomBanská Bystrica Region, Slovakia 190.2×▼414
  97. 2079SenecBratislava Region, Slovakia 190.2×▼377
  98. 2079Banská BystricaBanská Bystrica Region, Slovakia 190.2×▼20
  99. 2079Zielona GóraLubusz, Poland 190.2×▼310
  100. 2079GarðabærCapital Region, Iceland 190.2×▲378

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 12 Oct 2026, 23:00 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: #3 Gaur, Madhesh, #4 Dhaka, #5 Dubai, #6 Vientiane, #7 Gujranwala, #8 Faisalabad, #9 Changchun and #10 Multan. Some values from Sensor.Community, ODbL. Some readings from Vietnam's government monitors; Uzhydromet (Uzbekistan's Hydrometeorological Service); 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 2026-10-12 23:07 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: Vietnam's government monitors; Uzhydromet (Uzbekistan's Hydrometeorological Service); 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).