SmogRank / Rankings

All 2,516 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. 894Ponte Vedra BeachFlorida, United States 460.5×▲145
  2. 894GreendaleWisconsin, United States 460.5×▲215
  3. 894GuadalupeCalifornia, United States 460.5×▼274
  4. 894ParklandWashington, United States 460.5×▲302
  5. 894HitachiomiyaIbaraki, Japan 460.5×▼106
  6. 906RevúcaBanská Bystrica Region, Slovakia 450.5×▼17
  7. 906RuseRuse, Bulgaria 450.5×▼612
  8. 906BitolaBitola, North Macedonia 450.5×▼297
  9. 906JumunjinGangwon-do, South Korea 450.5×▼536
  10. 906OnoFukui, Japan 450.5×▼153
  11. 906KurayoshiTottori, Japan 450.5×▼216
  12. 906KumagawaFukui, Japan 450.5×▼407
  13. 906HōryūjiNara, Japan 450.5×
  14. 906MuswellbrookNew South Wales, Australia 450.5×▼180
  15. 906NiceProvence-Alpes-Côte d'Azur, France 450.5×▲148
  16. 906EsztergomKomárom-Esztergom, Hungary 450.5×▼54
  17. 906JasperIndiana, United States 450.5×▲518
  18. 906SharonvilleOhio, United States 450.5×▲494
  19. 906ChampaignIllinois, United States 450.5×▲445
  20. 906Lincoln ParkMichigan, United States 450.5×▲765
  21. 906DavisCalifornia, United States 450.5×▲11
  22. 906YachiyoChiba, Japan 450.5×▼117
  23. 906NarashinoChiba, Japan 450.5×▼60
  24. 924ChanthaburiChanthaburi, Thailand 440.5×▲36
  25. 924GoseongGyeongsangnam-do, South Korea 440.5×▼493
  26. 924MakiNiigata, Japan 440.5×
  27. 924ChibaChiba, Japan 440.5×▼184
  28. 924Newcastle upon TyneEngland, United Kingdom 440.5×▲410
  29. 924KasselHesse, Germany 440.5×▲318
  30. 924MontpellierOccitanie, France 440.5×▲131
  31. 924PaulíniaSão Paulo, Brazil 440.5×▼93
  32. 924Fort MyersFlorida, United States 440.5×▲860
  33. 924MonroeLouisiana, United States 440.5×▲22
  34. 924WaterlooIowa, United States 440.5×▼244
  35. 924East ChicagoIndiana, United States 440.5×▲182
  36. 924Port HuronMichigan, United States 440.5×▲900
  37. 924MaumeeOhio, United States 440.5×▲666
  38. 924BarabooWisconsin, United States 440.5×▲199
  39. 924BakersfieldCalifornia, United States 440.5×▲29
  40. 924OakvilleOntario, Canada 440.5×▲609
  41. 924SarniaOntario, Canada 440.5×▲1019
  42. 942StarachowiceŚwiętokrzyskie, Poland 440.5×▼80
  43. 942LublinLublin, Poland 440.5×▼302
  44. 942Kamojimachō-jōgejimaTokushima, Japan 440.5×
  45. 942SinhyeonGyeongsangnam-do, South Korea 440.5×▼227
  46. 942IchiharaChiba, Japan 440.5×▼186
  47. 942AberdeenScotland, United Kingdom 440.5×▲1304
  48. 942PúchovTrenčín Region, Slovakia 440.5×▲1
  49. 942HraniceOlomouc Region, Czechia 440.5×▲2
  50. 942Jelenia GóraLower Silesia, Poland 440.5×▼11
  51. 942ItaguaíRio de Janeiro, Brazil 440.5×▼721
  52. 942GainesvilleFlorida, United States 440.5×▲227
  53. 942JeffersontownKentucky, United States 440.5×▲645
  54. 942OwensboroKentucky, United States 440.5×▲483
  55. 942Michigan CityIndiana, United States 440.5×▲272
  56. 942OrcuttCalifornia, United States 440.5×▼283
  57. 942HamiltonOntario, Canada 440.5×▲186
  58. 942ShintomiMiyazaki, Japan 440.5×▲412
  59. 942Four CornersFlorida, United States 440.5×▲525
  60. 960Tbilisilow-cost sensorsTbilisi, Georgia 430.5×
  61. 960PruszkówMazovia, Poland 430.5×▼479
  62. 960ChumphonChumphon, Thailand 430.5×▼309
  63. 960BusanBusan, South Korea 430.5×▼222
  64. 960ObamaFukui, Japan 430.5×
  65. 960Ribeirão PretoSão Paulo, Brazil 430.5×▼201
  66. 960ClevelandMississippi, United States 430.5×▼281
  67. 960ColumbusOhio, United States 430.5×▲747
  68. 960ManisteeMichigan, United States 430.5×▲408
  69. 960PortervilleCalifornia, United States 430.5×▼116
  70. 970VilniusVilnius, Lithuania 430.5×▲144
  71. 970KaunasKaunas, Lithuania 430.5×▼207
  72. 970SzegedCsongrád, Hungary 430.5×▲498
  73. 970Dimitrovgradlow-cost sensorsHaskovo, Bulgaria 430.5×▼626
  74. 970Konstancin-JeziornaMazovia, Poland 430.5×▼123
  75. 970GijangBusan, South Korea 430.5×▼437
  76. 970GrazStyria, Austria 430.5×▼201
  77. 970LunévilleGrand Est, France 430.5×▲573
  78. 970DunaújvárosFejér, Hungary 430.5×▲98
  79. 970Ferraz de VasconcelosSão Paulo, Brazil 430.5×▲9
  80. 970CuernavacaMorelos, Mexico 430.5×▲146
  81. 970Sarasota SpringsFlorida, United States 430.5×▲514
  82. 970ElizabethtownKentucky, United States 430.5×▲616
  83. 970MadisonWisconsin, United States 430.5×▲154
  84. 970ConcordCalifornia, United States 430.5×▼95
  85. 970HuronCalifornia, United States 430.5×▼209
  86. 970San RafaelCalifornia, United States 430.5×▼151
  87. 970GeojeGyeongsangnam-do, South Korea 430.5×▼276
  88. 988Dolgoprudnyylow-cost sensorsMoscow Oblast, Russia 420.5×
  89. 988EłkWarmia-Masuria, Poland 420.5×▼195
  90. 988ChinjuGyeongsangnam-do, South Korea 420.5×▼336
  91. 988OsakaOsaka, Japan 420.5×▼300
  92. 988KyotoKyoto, Japan 420.5×▼373
  93. 988KanazawaIshikawa, Japan 420.5×▼191
  94. 988KōzakiChiba, Japan 420.5×▼123
  95. 988KatsuuraChiba, Japan 420.5×▼137
  96. 988TownsvilleQueensland, Australia 420.5×▼164
  97. 988VallettaValletta, Malta 420.5×▲110
  98. 988Reinbeklow-cost sensorsSchleswig-Holstein, Germany 420.5×
  99. 988BremenBremen, Germany 420.5×▲1249
  100. 988Oak RidgeFlorida, United States 420.5×▲466

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, 02:00 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, #4 Dubai, #6 Dhaka, #7 Multan, #8 Gujranwala, #9 Faisalabad and #10 Lahore. 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 02:07 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).