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.

not rankedHeemskerkNorth Holland, The Netherlands 33 US AQI0.4 times the WHO guideline
not rankedRadebeulSaxony, Germany 33 US AQI0.4 times the WHO guideline
not rankedMarbach am NeckarBaden-Wurttemberg, Germany 33 US AQI0.4 times the WHO guideline
not rankedLaupheimBaden-Wurttemberg, Germany 33 US AQI0.4 times the WHO guideline
not rankedKlamath FallsOregon, United States 33 US AQI0.4 times the WHO guideline
=1571UenoharaYamanashi, Japan 32 US AQI0.4 times the WHO guideline▼621
=1571ChitaZabaykalskiy (Transbaikal) Kray, Russia 32 US AQI0.4 times the WHO guideline▲983
=1571WollongongNew South Wales, Australia 32 US AQI0.4 times the WHO guideline▼112
=1571GraysEngland, United Kingdom 32 US AQI0.4 times the WHO guideline▲853
=1571SpijkenisseSouth Holland, The Netherlands 32 US AQI0.4 times the WHO guideline▲212
=1571EmmenDrenthe, The Netherlands 32 US AQI0.4 times the WHO guideline▲89
=1571Knokke-HeistFlanders, Belgium 32 US AQI0.4 times the WHO guideline▼108
=1571KapellenFlanders, Belgium 32 US AQI0.4 times the WHO guideline▲93
=1571AntwerpFlanders, Belgium 32 US AQI0.4 times the WHO guideline▲13
=1571CottbusBrandenburg, Germany 32 US AQI0.4 times the WHO guideline▲245
=1571MallowMunster, Ireland 32 US AQI0.4 times the WHO guideline▲535
=1571RoussillonAuvergne-Rhône-Alpes, France 32 US AQI0.4 times the WHO guideline▼61
=1571HarfleurNormandy, France 32 US AQI0.4 times the WHO guideline▲649
=1571DieppeNormandy, France 32 US AQI0.4 times the WHO guideline▲512
=1571CalaisHauts-de-France, France 32 US AQI0.4 times the WHO guideline▲383
=1571Bourg-en-BresseAuvergne-Rhône-Alpes, France 32 US AQI0.4 times the WHO guideline▼673
=1571BéthuneHauts-de-France, France 32 US AQI0.4 times the WHO guideline▲99
=1571LiberecLiberec Region, Czechia 32 US AQI0.4 times the WHO guideline▼199
=1571KadaňÚstí nad Labem Region, Czechia 32 US AQI0.4 times the WHO guideline▲102
=1571WorcesterWestern Cape, South Africa 32 US AQI0.4 times the WHO guideline▼123
=1571OlatheKansas, United States 32 US AQI0.4 times the WHO guideline▼151
=1571RaleighNorth Carolina, United States 32 US AQI0.4 times the WHO guideline
=1571San AntonioTexas, United States 32 US AQI0.4 times the WHO guideline▲22
=1571ChesapeakeVirginia, United States 32 US AQI0.4 times the WHO guideline▲542
=1571PoquosonVirginia, United States 32 US AQI0.4 times the WHO guideline▲759
=1571Short PumpVirginia, United States 32 US AQI0.4 times the WHO guideline▲998
=1571Royal OakMichigan, United States 32 US AQI0.4 times the WHO guideline▼917
=1571Grand IslandNebraska, United States 32 US AQI0.4 times the WHO guideline▼398
=1571Ken CarylColorado, United States 32 US AQI0.4 times the WHO guideline
=1571LittletonColorado, United States 32 US AQI0.4 times the WHO guideline▲1006
=1571AgassizBritish Columbia, Canada 32 US AQI0.4 times the WHO guideline▲368
not rankedSeligenstadtHesse, Germany 32 US AQI0.4 times the WHO guideline
not rankedMorocelíEl Paraíso Department, Honduras 32 US AQI0.4 times the WHO guideline
not rankedMemphisTennessee, United States 32 US AQI0.4 times the WHO guideline
not rankedBataviaIllinois, United States 32 US AQI0.4 times the WHO guideline
=1602Happy ValleySouth Australia, Australia 32 US AQI0.4 times the WHO guideline▼47
=1602HalleinSalzburg, Austria 32 US AQI0.4 times the WHO guideline▲211
=1602TauberbischofsheimBaden-Wurttemberg, Germany 32 US AQI0.4 times the WHO guideline▲531
=1602StraubingBavaria, Germany 32 US AQI0.4 times the WHO guideline
=1602ReinbekSchleswig-Holstein, Germany 32 US AQI0.4 times the WHO guideline▼398
=1602KehlBaden-Wurttemberg, Germany 32 US AQI0.4 times the WHO guideline▲158
=1602BremerhavenBremen, Germany 32 US AQI0.4 times the WHO guideline▼397
=1602DublinLeinster, Ireland 32 US AQI0.4 times the WHO guideline▲795
=1602CavanUlster, Ireland 32 US AQI0.4 times the WHO guideline▲957
=1602StrasbourgGrand Est, France 32 US AQI0.4 times the WHO guideline▼62
=1602RoubaixHauts-de-France, France 32 US AQI0.4 times the WHO guideline▼42
=1602AvignonProvence-Alpes-Côte d'Azur, France 32 US AQI0.4 times the WHO guideline▲164
=1602TrbovljeMunicipality of Trbovlje, Slovenia 32 US AQI0.4 times the WHO guideline▲170
=1602College StationTexas, United States 32 US AQI0.4 times the WHO guideline
=1602WaterburyConnecticut, United States 32 US AQI0.4 times the WHO guideline▲858
=1602ManisteeMichigan, United States 32 US AQI0.4 times the WHO guideline▼605
=1602BridgeportConnecticut, United States 32 US AQI0.4 times the WHO guideline▲971
=1602AtascaderoCalifornia, United States 32 US AQI0.4 times the WHO guideline▼255
=1602PrunedaleCalifornia, United States 32 US AQI0.4 times the WHO guideline▼130
=1602TracyCalifornia, United States 32 US AQI0.4 times the WHO guideline▼563
=1602HobbsNew Mexico, United States 32 US AQI0.4 times the WHO guideline▲136
=1602Port AngelesWashington, United States 32 US AQI0.4 times the WHO guideline▼408
not rankedVoskresenskMoscow Oblast, Russia 32 US AQI0.4 times the WHO guideline
not rankedBékéscsabaBekes County, Hungary 32 US AQI0.4 times the WHO guideline
not rankedRojalesValencia, Spain 32 US AQI0.4 times the WHO guideline
not rankedMiddelharnisSouth Holland, The Netherlands 32 US AQI0.4 times the WHO guideline
not rankedDiestFlanders, Belgium 32 US AQI0.4 times the WHO guideline
not rankedEmmerichNorth Rhine-Westphalia, Germany 32 US AQI0.4 times the WHO guideline
not rankedAichachBavaria, Germany 32 US AQI0.4 times the WHO guideline
not rankedClermontFlorida, United States 32 US AQI0.4 times the WHO guideline
not rankedJefferson CityMissouri, United States 32 US AQI0.4 times the WHO guideline
=1624WiganEngland, United Kingdom 31 US AQI0.4 times the WHO guideline▲588
=1624ZoetermeerSouth Holland, The Netherlands 31 US AQI0.4 times the WHO guideline
=1624SalzburgSalzburg, Austria 31 US AQI0.4 times the WHO guideline▲96
=1624HalleFlanders, Belgium 31 US AQI0.4 times the WHO guideline
=1624BeverenFlanders, Belgium 31 US AQI0.4 times the WHO guideline▲164
=1624ReutlingenBaden-Wurttemberg, Germany 31 US AQI0.4 times the WHO guideline▲221
=1624MannheimBaden-Wurttemberg, Germany 31 US AQI0.4 times the WHO guideline▼37
=1624Lauf an der PegnitzBavaria, Germany 31 US AQI0.4 times the WHO guideline
=1624RiedstadtHesse, Germany 31 US AQI0.4 times the WHO guideline▲231
=1624ShannonMunster, Ireland 31 US AQI0.4 times the WHO guideline▲962
=1624Pompano BeachFlorida, United States 31 US AQI0.4 times the WHO guideline▼59
=1624LawtonOklahoma, United States 31 US AQI0.4 times the WHO guideline▲260
=1624Lacy-LakeviewTexas, United States 31 US AQI0.4 times the WHO guideline▼105
=1624New HavenConnecticut, United States 31 US AQI0.4 times the WHO guideline▲888
=1624ConcordCalifornia, United States 31 US AQI0.4 times the WHO guideline▼482
=1624HuronCalifornia, United States 31 US AQI0.4 times the WHO guideline▼525
=1624North AuburnCalifornia, United States 31 US AQI0.4 times the WHO guideline▼332
=1624TorranceCalifornia, United States 31 US AQI0.4 times the WHO guideline▲784
=1624SandpointIdaho, United States 31 US AQI0.4 times the WHO guideline▲679
=1624PrinevilleOregon, United States 31 US AQI0.4 times the WHO guideline▲400
=1624StaytonOregon, United States 31 US AQI0.4 times the WHO guideline▲431
=1624BellevilleOntario, Canada 31 US AQI0.4 times the WHO guideline▼47
=1624CastlegarBritish Columbia, Canada 31 US AQI0.4 times the WHO guideline▲402
=1624Albion Park RailNew South Wales, Australia 31 US AQI0.4 times the WHO guideline▲209
not rankedVršacVojvodina, Serbia 31 US AQI0.4 times the WHO guideline
not rankedGorinchemSouth Holland, The Netherlands 31 US AQI0.4 times the WHO guideline
not rankedCapelle aan den IJsselSouth Holland, The Netherlands 31 US AQI0.4 times the WHO guideline
not rankedHohenemsVorarlberg, Austria 31 US AQI0.4 times the WHO guideline
not rankedHobokenFlanders, Belgium 31 US AQI0.4 times the WHO guideline

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).