SmogRank / Rankings

All 2,582 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. 1399RixensartWallonia, Belgium 320.4×▲848
  2. 1399ErtveldeFlanders, Belgium 320.4×▲454
  3. 1399EdenderryLeinster, Ireland 320.4×▼972
  4. 1399MâconBourgogne-Franche-Comté, France 320.4×▼199
  5. 1399BayonneNew Aquitaine, France 320.4×▼45
  6. 1399ElblągWarmia-Masuria, Poland 320.4×▼613
  7. 1399RoveretoTrentino-Alto Adige, Italy 320.4×▼81
  8. 1399MalmesburyWestern Cape, South Africa 320.4×▼487
  9. 1399CatoosaOklahoma, United States 320.4×▼1003
  10. 1399North CharlestonSouth Carolina, United States 320.4×▼244
  11. 1399GalvestonTexas, United States 320.4×▲160
  12. 1399HoustonTexas, United States 320.4×▼76
  13. 1399MarquetteMichigan, United States 320.4×▼499
  14. 1399Casa GrandeArizona, United States 320.4×▼375
  15. 1399AltamontOregon, United States 320.4×▲928
  16. 1399MadrasOregon, United States 320.4×▲163
  17. 1399SeattleWashington, United States 320.4×▲524
  18. 1399SheltonWashington, United States 320.4×▲204
  19. 1399BarrieOntario, Canada 320.4×▲403
  20. 1420TrebišovKošice Region, Slovakia 310.4×▼323
  21. 1420GunnedahNew South Wales, Australia 310.4×▲299
  22. 1420Stoke-on-TrentEngland, United Kingdom 310.4×▼131
  23. 1420UtrechtUtrecht, The Netherlands 310.4×▲187
  24. 1420WeizStyria, Austria 310.4×▼371
  25. 1420LeibnitzStyria, Austria 310.4×▼566
  26. 1420VeurneFlanders, Belgium 310.4×▲547
  27. 1420GentFlanders, Belgium 310.4×▲120
  28. 1420DunkirkHauts-de-France, France 310.4×▼106
  29. 1420DoleBourgogne-Franche-Comté, France 310.4×▼333
  30. 1420Beaumont-sur-OiseÎle-de-France, France 310.4×▲633
  31. 1420AmiensHauts-de-France, France 310.4×▲73
  32. 1420GyőrGyőr-Moson-Sopron, Hungary 310.4×▼581
  33. 1420PraguePrague, Czechia 310.4×▲233
  34. 1420Borgo ValsuganaTrentino-Alto Adige, Italy 310.4×▼125
  35. 1420AostaAosta Valley, Italy 310.4×▲928
  36. 1420AtlantaGeorgia, United States 310.4×▲319
  37. 1420DentOhio, United States 310.4×▲240
  38. 1420LebanonOhio, United States 310.4×▼140
  39. 1420DuluthMinnesota, United States 310.4×
  40. 1420MesaArizona, United States 310.4×▲177
  41. 1420Agouralow-cost sensorsCalifornia, United States 310.4×▼421
  42. 1420BurbankCalifornia, United States 310.4×▼664
  43. 1420Carsonlow-cost sensorsCalifornia, United States 310.4×▼456
  44. 1420ColusaCalifornia, United States 310.4×▼240
  45. 1420BremertonWashington, United States 310.4×▲502
  46. 1420ChehalisWashington, United States 310.4×▼56
  47. 1420CastlegarBritish Columbia, Canada 310.4×▲110
  48. 1448Omsklow-cost sensorsOmsk Oblast, Russia 310.4×
  49. 1448WaalreNorth Brabant, The Netherlands 310.4×▲484
  50. 1448NijverdalOverijssel, The Netherlands 310.4×▲831
  51. 1448EisenzickenBurgenland, Austria 310.4×▼138
  52. 1448Leuvenlow-cost sensorsFlanders, Belgium 310.4×
  53. 1448Marburg an der LahnHesse, Germany 310.4×▲411
  54. 1448ToulouseOccitanie, France 310.4×▲457
  55. 1448LunévilleGrand Est, France 310.4×▲239
  56. 1448Fontaine-lès-DijonBourgogne-Franche-Comté, France 310.4×▼25
  57. 1448CreilHauts-de-France, France 310.4×▲493
  58. 1448AnnemasseAuvergne-Rhône-Alpes, France 310.4×▲686
  59. 1448Mladá BoleslavCentral Bohemia, Czechia 310.4×▼593
  60. 1448BydgoszczKujawsko-Pomorskie, Poland 310.4×▼512
  61. 1448BogotáBogota D.C., Colombia 310.4×▼152
  62. 1448Warner RobinsGeorgia, United States 310.4×▼107
  63. 1448Lacy-LakeviewTexas, United States 310.4×▼531
  64. 1448ChicoCalifornia, United States 310.4×▼14
  65. 1448FontanaCalifornia, United States 310.4×▼448
  66. 1448WoodburnOregon, United States 310.4×▼236
  67. 1467Svishtovlow-cost sensorsVeliko Tarnovo, Bulgaria 300.4×▼690
  68. 1467KumanovoKumanovo, North Macedonia 300.4×▼1142
  69. 1467UpingtonNorthern Cape, South Africa 300.4×
  70. 1467LoughboroughEngland, United Kingdom 300.4×▲104
  71. 1467LunterenGelderland, The Netherlands 300.4×▲574
  72. 1467Genneplow-cost sensorsLimburg, The Netherlands 300.4×
  73. 1467DammeFlanders, Belgium 300.4×▲502
  74. 1467Rüsselsheim am MainHesse, Germany 300.4×▲762
  75. 1467PérigueuxNew Aquitaine, France 300.4×▲23
  76. 1467PartizánskeTrenčín Region, Slovakia 300.4×▼22
  77. 1467Cadereyta JiménezNuevo León, Mexico 300.4×
  78. 1467Le LamentinMartinique, Martinique 300.4×▲362
  79. 1467Palm CityFlorida, United States 300.4×▲155
  80. 1467Columbialow-cost sensorsMissouri, United States 300.4×▼725
  81. 1467MooreOklahoma, United States 300.4×▼815
  82. 1467KnoxvilleTennessee, United States 300.4×▲817
  83. 1467PasadenaTexas, United States 300.4×▲126
  84. 1467TucsonArizona, United States 300.4×▼163
  85. 1467El RioCalifornia, United States 300.4×▼85
  86. 1467TemeculaCalifornia, United States 300.4×▼58
  87. 1467ShorelineWashington, United States 300.4×▲137
  88. 1467EdsonAlberta, Canada 300.4×▲862
  89. 1467St. CatharinesOntario, Canada 300.4×▼101
  90. 1490SakaiminatoTottori, Japan 290.4×▼259
  91. 1490CampbelltownNew South Wales, Australia 290.4×▼528
  92. 1490BathurstNew South Wales, Australia 290.4×▼139
  93. 1490YorkEngland, United Kingdom 290.4×▲321
  94. 1490RotterdamSouth Holland, The Netherlands 290.4×
  95. 1490Bestlow-cost sensorsNorth Brabant, The Netherlands 290.4×
  96. 1490JenbachTyrol, Austria 290.4×▲22
  97. 1490LiègeWallonia, Belgium 290.4×▼178
  98. 1490Habay-la-VieilleWallonia, Belgium 290.4×▼155
  99. 1490LampertheimHesse, Germany 290.4×▲673
  100. 1490MontargisCentre-Val de Loire, France 290.4×▼24

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, 22:00 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 Dhaka, #4 Gaur, Madhesh, #5 Dubai, #6 Vientiane, #7 Changchun, #8 Gujranwala and #9 Faisalabad. 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.

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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 22:07 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).