All 2,645 cities by PM2.5, last 24 hours

Every city with enough measurements in this window, worst first.

CPCB in India: no readings since 12 Oct (488 monitors). EEA and Catalonia Medi Ambient I Sostenibilitat in Spain: no readings since 13 Oct (336 monitors). Their cities are missing from this board, not clean.

Hide the 1,153 cities with only 1–2 sensors

These cities have only one or two low-cost sensors, and one cheap unit can read well off, so they take no rank. They sit at their place by value, marked –, and every ranked city keeps its number.

=693ClintonIowa, United States 54 US AQI0.7 times the WHO guideline▲8
=693Iowa CityIowa, United States 54 US AQI0.7 times the WHO guideline▲267
=693WarrenvilleIllinois, United States 54 US AQI0.7 times the WHO guideline▲217
=693KalamazooMichigan, United States 54 US AQI0.7 times the WHO guideline▲27
=693PalmyraNew Jersey, United States 54 US AQI0.7 times the WHO guideline▲1744
not rankedKobyłkaMazovia, Poland 54 US AQI0.7 times the WHO guideline
not rankedBernBern, Switzerland 54 US AQI0.7 times the WHO guideline
not rankedSalgótarjánNógrád, Hungary 54 US AQI0.7 times the WHO guideline
not rankedTylerTexas, United States 54 US AQI0.7 times the WHO guideline
=708TbilisiTbilisi, Georgia 53 US AQI0.7 times the WHO guideline▲393
=708PhatthalungPhatthalung, Thailand 53 US AQI0.7 times the WHO guideline▼75
=708KisarazuChiba, Japan 53 US AQI0.7 times the WHO guideline▲313
=708Kanzakimachi-kanzakiSaga, Japan 53 US AQI0.7 times the WHO guideline▼320
=708Kakogawachō-honmachiHyōgo, Japan 53 US AQI0.7 times the WHO guideline▲172
=708IseharaKanagawa, Japan 53 US AQI0.7 times the WHO guideline▲173
=708HōfuYamaguchi, Japan 53 US AQI0.7 times the WHO guideline▼187
=708OlomoucOlomouc Region, Czechia 53 US AQI0.7 times the WHO guideline▼43
=708MuncieIndiana, United States 53 US AQI0.7 times the WHO guideline▼5
=708TorontoOntario, Canada 53 US AQI0.7 times the WHO guideline▲40
=708HigashimurayamaTokyo, Japan 53 US AQI0.7 times the WHO guideline▲81
=708TsushimaNagasaki, Japan 53 US AQI0.7 times the WHO guideline▲181
not rankedPiasecznoMazovia, Poland 53 US AQI0.7 times the WHO guideline
not rankedWaldkraiburgBavaria, Germany 53 US AQI0.7 times the WHO guideline
not rankedGahannaOhio, United States 53 US AQI0.7 times the WHO guideline
=720YukuhashiFukuoka, Japan 53 US AQI0.7 times the WHO guideline▼12
=720SetoAichi, Japan 53 US AQI0.7 times the WHO guideline▼337
=720AnanTokushima, Japan 53 US AQI0.7 times the WHO guideline▲50
=720MookaTochigi, Japan 53 US AQI0.7 times the WHO guideline
=720ZirndorfBavaria, Germany 53 US AQI0.7 times the WHO guideline
=720SzczytnaLower Silesia, Poland 53 US AQI0.7 times the WHO guideline
=720AlessandriaPiedmont, Italy 53 US AQI0.7 times the WHO guideline▲108
=720San Juan del RíoQuerétaro, Mexico 53 US AQI0.7 times the WHO guideline▼229
=720CamdenNew Jersey, United States 53 US AQI0.7 times the WHO guideline▲1503
=720Elmwood ParkIllinois, United States 53 US AQI0.7 times the WHO guideline▲56
=720DetroitMichigan, United States 53 US AQI0.7 times the WHO guideline▼1
=720ComptonCalifornia, United States 53 US AQI0.7 times the WHO guideline▲802
=720St. ThomasOntario, Canada 53 US AQI0.7 times the WHO guideline▲494
=720AzaminoKanagawa, Japan 53 US AQI0.7 times the WHO guideline▲46
=720ShikokuchūōEhime, Japan 53 US AQI0.7 times the WHO guideline▲87
not rankedMinusinskKrasnoyarsk Krai, Russia 53 US AQI0.7 times the WHO guideline
not rankedPakseChampasak Province, Laos 53 US AQI0.7 times the WHO guideline
not rankedZduńska WolaŁódź Voivodeship, Poland 53 US AQI0.7 times the WHO guideline
not rankedBassano del GrappaVeneto, Italy 53 US AQI0.7 times the WHO guideline
not rankedGračanicaFederation of B&H, Bosnia and Herzegovina 53 US AQI0.7 times the WHO guideline
not rankedMundeleinIllinois, United States 53 US AQI0.7 times the WHO guideline
not rankedAvon LakeOhio, United States 53 US AQI0.7 times the WHO guideline
=735VanadzorLori, Armenia 53 US AQI0.7 times the WHO guideline▼41
=735PopradPrešov Region, Slovakia 53 US AQI0.7 times the WHO guideline▲792
=735TsuruokaYamagata, Japan 53 US AQI0.7 times the WHO guideline▼194
=735NishioAichi, Japan 53 US AQI0.7 times the WHO guideline▼470
=735SayamaSaitama, Japan 53 US AQI0.7 times the WHO guideline▼19
=735MobaraChiba, Japan 53 US AQI0.7 times the WHO guideline▲288
=735BrisbaneQueensland, Australia 53 US AQI0.7 times the WHO guideline▼368
=735NiceProvence-Alpes-Côte d'Azur, France 53 US AQI0.7 times the WHO guideline▲238
=735TrenčínTrenčín Region, Slovakia 53 US AQI0.7 times the WHO guideline▲710
=735KościerzynaPomerania, Poland 53 US AQI0.7 times the WHO guideline▲1350
=735PeoriaIllinois, United States 53 US AQI0.7 times the WHO guideline▲80
=735MaumeeOhio, United States 53 US AQI0.7 times the WHO guideline▲193
=735Logan CityQueensland, Australia 53 US AQI0.7 times the WHO guideline▼232
=735Psie Pole ZawidawieLower Silesia, Poland 53 US AQI0.7 times the WHO guideline
=735TakuSaga, Japan 53 US AQI0.7 times the WHO guideline▼396
not rankedJelgavaJelgava, Latvia 53 US AQI0.7 times the WHO guideline
not rankedPiastówMazovia, Poland 53 US AQI0.7 times the WHO guideline
not rankedStara PazovaVojvodina, Serbia 53 US AQI0.7 times the WHO guideline
not rankedMadisonNew Jersey, United States 53 US AQI0.7 times the WHO guideline
not rankedJelcz LaskowiceLower Silesia, Poland 53 US AQI0.7 times the WHO guideline
=750MinatoWakayama, Japan 53 US AQI0.7 times the WHO guideline▼135
=750OlpeNorth Rhine-Westphalia, Germany 53 US AQI0.7 times the WHO guideline
=750EnnisMunster, Ireland 53 US AQI0.7 times the WHO guideline▲1566
=750PécsBaranya, Hungary 53 US AQI0.7 times the WHO guideline▲609
=750DecaturAlabama, United States 53 US AQI0.7 times the WHO guideline▲171
=750St. PetersburgFlorida, United States 53 US AQI0.7 times the WHO guideline▲262
=750GainesvilleGeorgia, United States 53 US AQI0.7 times the WHO guideline▲625
=750NashvilleTennessee, United States 53 US AQI0.7 times the WHO guideline▲208
=750Cedar RapidsIowa, United States 53 US AQI0.7 times the WHO guideline▲282
=750East ChicagoIndiana, United States 53 US AQI0.7 times the WHO guideline▲388
=750HammondIndiana, United States 53 US AQI0.7 times the WHO guideline▲521
=750ClovisCalifornia, United States 53 US AQI0.7 times the WHO guideline▼4
=750Eagle PassTexas, United States 53 US AQI0.7 times the WHO guideline▲902
not rankedIllingenSaarland, Germany 53 US AQI0.7 times the WHO guideline
not rankedBusto ArsizioLombardy, Italy 53 US AQI0.7 times the WHO guideline
=763KamakuraKanagawa, Japan 53 US AQI0.7 times the WHO guideline▲48
=763TraunUpper Austria, Austria 53 US AQI0.7 times the WHO guideline▲406
=763FlatwoodsKentucky, United States 53 US AQI0.7 times the WHO guideline▲447
=763Valley StationKentucky, United States 53 US AQI0.7 times the WHO guideline▲68
=763GulfportMississippi, United States 53 US AQI0.7 times the WHO guideline▲104
=763Winthrop HarborIllinois, United States 53 US AQI0.7 times the WHO guideline▲273
=763ElkhartIndiana, United States 53 US AQI0.7 times the WHO guideline▲232
=763South BendIndiana, United States 53 US AQI0.7 times the WHO guideline▲233
=763DearbornMichigan, United States 53 US AQI0.7 times the WHO guideline▼30
=763New HollandPennsylvania, United States 53 US AQI0.7 times the WHO guideline▲1231
=763OceanoCalifornia, United States 53 US AQI0.7 times the WHO guideline▲672
=763BarrieOntario, Canada 53 US AQI0.7 times the WHO guideline▲711
=763ChikumaNagano, Japan 53 US AQI0.7 times the WHO guideline▼121
not rankedBiałołekaMazovia, Poland 53 US AQI0.7 times the WHO guideline
=776ŻyrardówMazovia, Poland 52 US AQI0.7 times the WHO guideline
=776ThembisaGauteng, South Africa 52 US AQI0.7 times the WHO guideline▼144
=776TosuSaga, Japan 52 US AQI0.7 times the WHO guideline▼371
=776TochigiTochigi, Japan 52 US AQI0.7 times the WHO guideline▲559
=776MiyakonojōMiyazaki, Japan 52 US AQI0.7 times the WHO guideline▼214

What stands behind each figure: Checked at 2+ sites One reference monitor Low-cost sensors 1–2 sensors, not ranked About these marks

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

Unhealthy for 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, Turkey and Iran, which publish only on their own websites. We are building the reader for China's network. The networks of Turkey and Iran don't answer requests from outside their countries, so we can't read them. 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 14 Oct 2026, 05:00 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 Gaur, Madhesh, #2 Kuala Lumpur, #4 Multan, #5 Faisalabad, #6 Gujranwala, #7 Lilongwe, #8 Lahore, #9 Dhaka and #10 Bahawalpur. 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), 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 2026-10-14 05:07 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), no reuse terms published (why we use them).