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. 2200Milton KeynesEngland, United Kingdom 150.2×▼340
  2. 2200IrlamEngland, United Kingdom 150.2×▼578
  3. 2200EastbourneEngland, United Kingdom 150.2×▼221
  4. 2200BurwellEngland, United Kingdom 150.2×▼219
  5. 2200NavanLeinster, Ireland 150.2×▼565
  6. 2200EnniscorthyLeinster, Ireland 150.2×▼670
  7. 2200BirrLeinster, Ireland 150.2×▼525
  8. 2200PauNew Aquitaine, France 150.2×▼113
  9. 2200La Ferté-MacéNormandy, France 150.2×▼41
  10. 2200Cesson-Sévignélow-cost sensorsBrittany, France 150.2×
  11. 2200NikšićOpština Nikšić, Montenegro 150.2×▼201
  12. 2200AltoonaPennsylvania, United States 150.2×▲74
  13. 2200HersheyPennsylvania, United States 150.2×▼1070
  14. 2200LebanonPennsylvania, United States 150.2×▼843
  15. 2200Boulder CityNevada, United States 150.2×▲103
  16. 2200HendersonNevada, United States 150.2×▲76
  17. 2200Hood RiverOregon, United States 150.2×▼52
  18. 2200NewportOregon, United States 150.2×▼34
  19. 2200Fort McMurrayAlberta, Canada 150.2×▲45
  20. 2220MoeVictoria, Australia 140.2×▲111
  21. 2220PlymouthEngland, United Kingdom 140.2×▼278
  22. 2220HooEngland, United Kingdom 140.2×▼923
  23. 2220Villingen-SchwenningenBaden-Wurttemberg, Germany 140.2×▼163
  24. 2220Neu-Anspachlow-cost sensorsHesse, Germany 140.2×
  25. 2220RennesBrittany, France 140.2×▼346
  26. 2220La Roche-sur-YonPays de la Loire, France 140.2×▼499
  27. 2220ChrastavaLiberec Region, Czechia 140.2×▼183
  28. 2220HarrisonburgVirginia, United States 140.2×▼5
  29. 2220SpringfieldMassachusetts, United States 140.2×▼1172
  30. 2220KeeneNew Hampshire, United States 140.2×▼1059
  31. 2220Jersey CityNew Jersey, United States 140.2×▼763
  32. 2220MendhamNew Jersey, United States 140.2×▼913
  33. 2220MonessenPennsylvania, United States 140.2×▼20
  34. 2220WyomissingPennsylvania, United States 140.2×▼367
  35. 2220WatertownSouth Dakota, United States 140.2×▼1541
  36. 2220BenningtonVermont, United States 140.2×▼148
  37. 2220DeltaColorado, United States 140.2×▼42
  38. 2220HurricaneUtah, United States 140.2×▲156
  39. 2220Red BluffCalifornia, United States 140.2×▼483
  40. 2220Mount VernonWashington, United States 140.2×▲87
  41. 2220FairbanksAlaska, United States 140.2×▼1073
  42. 2220BurnabyBritish Columbia, Canada 140.2×▼989
  43. 2220Red DeerAlberta, Canada 140.2×▼565
  44. 2220SaguenayQuebec, Canada 140.2×▼365
  45. 2220Sherwood ParkAlberta, Canada 140.2×▼107
  46. 2246Lovechlow-cost sensorsLovech, Bulgaria 140.2×
  47. 2246AylesburyEngland, United Kingdom 140.2×▼499
  48. 2246KüssnachtSchwyz, Switzerland 140.2×
  49. 2246TournaiWallonia, Belgium 140.2×▲144
  50. 2246StrausbergBrandenburg, Germany 140.2×▼381
  51. 2246Paderbornlow-cost sensorsNorth Rhine-Westphalia, Germany 140.2×
  52. 2246FürthHesse, Germany 140.2×▼90
  53. 2246Bendorflow-cost sensorsRheinland-Pfalz, Germany 140.2×
  54. 2246Bad BelzigBrandenburg, Germany 140.2×▼256
  55. 2246LetterkennyUlster, Ireland 140.2×▼337
  56. 2246EnnisMunster, Ireland 140.2×▼447
  57. 2246TarbesOccitanie, France 140.2×▼160
  58. 2246CherbourgNormandy, France 140.2×▼155
  59. 2246Nakło nad NoteciąKujawsko-Pomorskie, Poland 140.2×▼1318
  60. 2246Biograd na MoruZadar, Croatia 140.2×▲78
  61. 2246ChambersburgPennsylvania, United States 140.2×▼792
  62. 2246PortsmouthNew Hampshire, United States 140.2×▼844
  63. 2246Abingtonlow-cost sensorsPennsylvania, United States 140.2×▼320
  64. 2246WarrenPennsylvania, United States 140.2×▲13
  65. 2246Cereslow-cost sensorsCalifornia, United States 140.2×▲145
  66. 2246Arvadalow-cost sensorsColorado, United States 140.2×▼468
  67. 2246PuebloColorado, United States 140.2×▼662
  68. 2246ButteMontana, United States 140.2×▲15
  69. 2246RedmondOregon, United States 140.2×▼139
  70. 2246TalentOregon, United States 140.2×▼22
  71. 2246BellevueWashington, United States 140.2×▲60
  72. 2246YakimaWashington, United States 140.2×▲123
  73. 2246RanchettesWyoming, United States 140.2×▲91
  74. 2246MonctonNew Brunswick, Canada 140.2×▼62
  75. 2246NanaimoBritish Columbia, Canada 140.2×▲124
  76. 2276TamperePirkanmaa, Finland 130.2×▼8
  77. 2276Veľká LomnicaPrešov Region, Slovakia 130.2×▼811
  78. 2276Slivenlow-cost sensorsSliven, Bulgaria 130.2×
  79. 2276WorcesterEngland, United Kingdom 130.2×▼336
  80. 2276PortsmouthEngland, United Kingdom 130.2×▼195
  81. 2276EdinburghScotland, United Kingdom 130.2×▼159
  82. 2276CwmafanWales, United Kingdom 130.2×▼572
  83. 2276BorehamwoodEngland, United Kingdom 130.2×▼487
  84. 2276Vila RealVila Real, Portugal 130.2×▼89
  85. 2276Cluain MealaMunster, Ireland 130.2×▼284
  86. 2276BrayLeinster, Ireland 130.2×▼148
  87. 2276CorteCorsica, France 130.2×
  88. 2276Osowalow-cost sensorsPomerania, Poland 130.2×
  89. 2276AvellinoCampania, Italy 130.2×▼141
  90. 2276LexingtonNorth Carolina, United States 130.2×▼238
  91. 2276BrandermillVirginia, United States 130.2×▼312
  92. 2276ElizabethNew Jersey, United States 130.2×▼791
  93. 2276HarrisburgPennsylvania, United States 130.2×▼894
  94. 2276DallasOregon, United States 130.2×▼33
  95. 2276MiramichiNew Brunswick, Canada 130.2×▲20
  96. 2276Dallgow-DöberitzBrandenburg, Germany 130.2×▼196
  97. 2297Kolpinolow-cost sensorsSt.-Petersburg, Russia 130.2×
  98. 2297Stara Zagoralow-cost sensorsStara Zagora, Bulgaria 130.2×
  99. 2297WrexhamWales, United Kingdom 130.2×▼400
  100. 2297Royal Leamington SpaEngland, United Kingdom 130.2×▼353

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).