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. 2090AngersPays de la Loire, France 170.2×▼454
  2. 2090SopotPomerania, Poland 170.2×▼1016
  3. 2090ElverumInnlandet, Norway 170.2×
  4. 2090ClemmonsNorth Carolina, United States 170.2×▲72
  5. 2090MorrisvilleNorth Carolina, United States 170.2×▼485
  6. 2090Wake Forestlow-cost sensorsNorth Carolina, United States 170.2×▼446
  7. 2090LewistonMaine, United States 170.2×▼359
  8. 2090NewarkNew Jersey, United States 170.2×▼961
  9. 2090BridgevillePennsylvania, United States 170.2×▲130
  10. 2090Natrona HeightsPennsylvania, United States 170.2×▲131
  11. 2090New BrightonPennsylvania, United States 170.2×▲148
  12. 2090New HollandPennsylvania, United States 170.2×▼124
  13. 2090ScrantonPennsylvania, United States 170.2×▼732
  14. 2090HartfordVermont, United States 170.2×▼16
  15. 2090LewistonIdaho, United States 170.2×▼862
  16. 2090AshlandOregon, United States 170.2×▼15
  17. 2090CanbyOregon, United States 170.2×▼480
  18. 2090GreenOregon, United States 170.2×▲90
  19. 2090McMinnvilleOregon, United States 170.2×▼14
  20. 2090SilvertonOregon, United States 170.2×▼352
  21. 2090Airway HeightsWashington, United States 170.2×▼41
  22. 2090Port TownsendWashington, United States 170.2×▲18
  23. 2090EdertalHesse, Germany 170.2×▼152
  24. 2124Apatitylow-cost sensorsMurmansk, Russia 170.2×
  25. 2124Gotse Delchevlow-cost sensorsBlagoevgrad, Bulgaria 170.2×
  26. 2124Riemstlow-cost sensorsFlanders, Belgium 170.2×
  27. 2124BastogneWallonia, Belgium 170.2×▼410
  28. 2124WittenbergeBrandenburg, Germany 170.2×▼2
  29. 2124GersfeldHesse, Germany 170.2×▲224
  30. 2124Eggenstein-LeopoldshafenBaden-Wurttemberg, Germany 170.2×▼136
  31. 2124GalwayConnacht, Ireland 170.2×▼61
  32. 2124BourgesCentre-Val de Loire, France 170.2×▼825
  33. 2124BudapestBudapest, Hungary 170.2×▼804
  34. 2124Chorvátsky Grob - Čierna VodaBratislava Region, Slovakia 170.2×▼127
  35. 2124Zacatepec de HidalgoMorelos, Mexico 170.2×▲191
  36. 2124Winston-SalemNorth Carolina, United States 170.2×▲40
  37. 2124BristolVirginia, United States 170.2×▲204
  38. 2124GreensburgPennsylvania, United States 170.2×▲178
  39. 2124BurlingtonVermont, United States 170.2×▼51
  40. 2124Torrancelow-cost sensorsCalifornia, United States 170.2×▼788
  41. 2124EnterpriseNevada, United States 170.2×▲116
  42. 2124Las VegasNevada, United States 170.2×▲79
  43. 2124BoiseIdaho, United States 170.2×▲23
  44. 2124Walla WallaWashington, United States 170.2×▼194
  45. 2124Summerlin SouthNevada, United States 170.2×▲141
  46. 2124AintreeVictoria, Australia 170.2×▼297
  47. 2147BraşovBrașov County, Romania 160.2×
  48. 2147Blagoevgradlow-cost sensorsBlagoevgrad, Bulgaria 160.2×
  49. 2147IlindenIlinden, North Macedonia 160.2×▼679
  50. 2147MorwellVictoria, Australia 160.2×▲101
  51. 2147GraysEngland, United Kingdom 160.2×▼444
  52. 2147CreweEngland, United Kingdom 160.2×▼360
  53. 2147BirminghamEngland, United Kingdom 160.2×▼357
  54. 2147KollumFriesland, The Netherlands 160.2×▲194
  55. 2147Zell am SeeSalzburg, Austria 160.2×▲42
  56. 2147LubnjowBrandenburg, Germany 160.2×▼63
  57. 2147Jülichlow-cost sensorsNorth Rhine-Westphalia, Germany 160.2×
  58. 2147Herrenberglow-cost sensorsBaden-Wurttemberg, Germany 160.2×
  59. 2147GroßalmerodeHesse, Germany 160.2×▼87
  60. 2147GärtringenBaden-Wurttemberg, Germany 160.2×▼23
  61. 2147TraleeMunster, Ireland 160.2×▼431
  62. 2147Saint-NazairePays de la Loire, France 160.2×▲11
  63. 2147NiortNew Aquitaine, France 160.2×▼427
  64. 2147NantesPays de la Loire, France 160.2×▼757
  65. 2147MontluçonAuvergne-Rhône-Alpes, France 160.2×▼345
  66. 2147PezinokBratislava Region, Slovakia 160.2×▼303
  67. 2147Gorzów WielkopolskiLubusz, Poland 160.2×▼909
  68. 2147Kuils RiverWestern Cape, South Africa 160.2×▼10
  69. 2147WashingtonDistrict of Columbia, United States 160.2×▼79
  70. 2147ClaytonNorth Carolina, United States 160.2×▼185
  71. 2147DurhamNorth Carolina, United States 160.2×▼145
  72. 2147Camdenlow-cost sensorsNew Jersey, United States 160.2×▼571
  73. 2147Jefferson HillsPennsylvania, United States 160.2×▼103
  74. 2147State CollegePennsylvania, United States 160.2×▼46
  75. 2147LamarColorado, United States 160.2×▼718
  76. 2147South ValleyNew Mexico, United States 160.2×▼764
  77. 2147BendOregon, United States 160.2×▼454
  78. 2147ToppenishWashington, United States 160.2×▲80
  79. 2147CasperWyoming, United States 160.2×▲3
  80. 2147KīheiHawaii, United States 160.2×▼96
  81. 2147KingstonOntario, Canada 160.2×▼531
  82. 2147North VancouverBritish Columbia, Canada 160.2×▲162
  83. 2183LappeenrantaSouth Karelia, Finland 160.2×▲127
  84. 2183LisbonLisbon, Portugal 160.2×▼928
  85. 2183CacémLisbon, Portugal 160.2×▼659
  86. 2183VielsalmWallonia, Belgium 160.2×▼743
  87. 2183NamurWallonia, Belgium 160.2×▲49
  88. 2183EisenhüttenstadtBrandenburg, Germany 160.2×▼158
  89. 2183RevinGrand Est, France 160.2×▼190
  90. 2183Montoir-de-BretagnePays de la Loire, France 160.2×▲9
  91. 2183SeafordDelaware, United States 160.2×▼264
  92. 2183UniontownPennsylvania, United States 160.2×▲159
  93. 2183BangorMaine, United States 160.2×▼538
  94. 2183Casas AdobesArizona, United States 160.2×▲175
  95. 2183Spring ValleyNevada, United States 160.2×▲40
  96. 2183SandpointIdaho, United States 160.2×▼136
  97. 2183BountifulUtah, United States 160.2×▼2
  98. 2183AirdrieAlberta, Canada 160.2×▲196
  99. 2183BathurstNew Brunswick, Canada 160.2×▲81
  100. 2200Southend-on-SeaEngland, United Kingdom 150.2×▼415

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.

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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 2026-10-13 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).