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.

2506Grand CentreAlberta, Canada 13 US AQI0.2 times the WHO guideline▲78
not rankedDzerzhinskNizhny Novgorod Oblast, Russia 13 US AQI0.2 times the WHO guideline
not rankedKarlovoPlovdiv, Bulgaria 13 US AQI0.2 times the WHO guideline
not rankedKateríniCentral Macedonia, Greece 13 US AQI0.2 times the WHO guideline
not rankedAucklandAuckland, New Zealand 13 US AQI0.2 times the WHO guideline
not rankedCataniaSicily, Italy 13 US AQI0.2 times the WHO guideline
not rankedRhosllannerchrugogWales, United Kingdom 13 US AQI0.2 times the WHO guideline
not rankedStadthagenLower Saxony, Germany 13 US AQI0.2 times the WHO guideline
not rankedPenzbergBavaria, Germany 13 US AQI0.2 times the WHO guideline
not rankedPeineLower Saxony, Germany 13 US AQI0.2 times the WHO guideline
not rankedMaynoothLeinster, Ireland 13 US AQI0.2 times the WHO guideline
not rankedVilla DoloresCordoba, Argentina 13 US AQI0.2 times the WHO guideline
not rankedWest MelbourneFlorida, United States 13 US AQI0.2 times the WHO guideline
not rankedLake OswegoOregon, United States 13 US AQI0.2 times the WHO guideline
not rankedSilver FirsWashington, United States 13 US AQI0.2 times the WHO guideline
=2526TonbridgeEngland, United Kingdom 12 US AQI0.1 times the WHO guideline
=2526WeertLimburg, The Netherlands 12 US AQI0.1 times the WHO guideline
=2526RoermondLimburg, The Netherlands 12 US AQI0.1 times the WHO guideline▼2488
=2526WolfenbüttelLower Saxony, Germany 12 US AQI0.1 times the WHO guideline
=2526RottweilBaden-Wurttemberg, Germany 12 US AQI0.1 times the WHO guideline▲13
=2526FüssenBavaria, Germany 12 US AQI0.1 times the WHO guideline
=2526Clermont-FerrandAuvergne-Rhône-Alpes, France 12 US AQI0.1 times the WHO guideline▼605
=2526BloisCentre-Val de Loire, France 12 US AQI0.1 times the WHO guideline▼367
=2526AurillacAuvergne-Rhône-Alpes, France 12 US AQI0.1 times the WHO guideline▼153
=2526FredrikstadØstfold, Norway 12 US AQI0.1 times the WHO guideline
=2526CodyWyoming, United States 12 US AQI0.1 times the WHO guideline
=2526KallahtiUusimaa, Finland 12 US AQI0.1 times the WHO guideline▲118
not rankedGorodishcheVolgograd Oblast, Russia 12 US AQI0.1 times the WHO guideline
not rankedDzerzhinskiyMoscow Oblast, Russia 12 US AQI0.1 times the WHO guideline
not rankedLaukaaCentral Finland, Finland 12 US AQI0.1 times the WHO guideline
not rankedEspooUusimaa, Finland 12 US AQI0.1 times the WHO guideline
not rankedChirpanStara Zagora, Bulgaria 12 US AQI0.1 times the WHO guideline
not rankedPtolemaḯdaWest Macedonia, Greece 12 US AQI0.1 times the WHO guideline
not rankedAstanaAstana, Kazakhstan 12 US AQI0.1 times the WHO guideline
not rankedWittenNorth Rhine-Westphalia, Germany 12 US AQI0.1 times the WHO guideline
not rankedSpengeNorth Rhine-Westphalia, Germany 12 US AQI0.1 times the WHO guideline
not rankedSeelzeLower Saxony, Germany 12 US AQI0.1 times the WHO guideline
not rankedRastattBaden-Wurttemberg, Germany 12 US AQI0.1 times the WHO guideline
not rankedIlmenauThuringia, Germany 12 US AQI0.1 times the WHO guideline
not rankedBad HonnefNorth Rhine-Westphalia, Germany 12 US AQI0.1 times the WHO guideline
not rankedSan RamonCalifornia, United States 12 US AQI0.1 times the WHO guideline
=2538Gotse DelchevBlagoevgrad, Bulgaria 12 US AQI0.1 times the WHO guideline▼303
=2538RiversdaleWestern Cape, South Africa 12 US AQI0.1 times the WHO guideline▼633
=2538GroßalmerodeHesse, Germany 12 US AQI0.1 times the WHO guideline▼189
=2538FontainebleauÎle-de-France, France 12 US AQI0.1 times the WHO guideline▼295
=2538RutlandVermont, United States 12 US AQI0.1 times the WHO guideline▼649
=2538Green ValleyArizona, United States 12 US AQI0.1 times the WHO guideline▼281
=2538CeresCalifornia, United States 12 US AQI0.1 times the WHO guideline▼132
=2538Cañon CityColorado, United States 12 US AQI0.1 times the WHO guideline▲113
=2538PuebloColorado, United States 12 US AQI0.1 times the WHO guideline▼128
=2538Salt Lake CityUtah, United States 12 US AQI0.1 times the WHO guideline▼95
=2538AnacortesWashington, United States 12 US AQI0.1 times the WHO guideline▲90
=2538Fort McMurrayAlberta, Canada 12 US AQI0.1 times the WHO guideline▼119
=2538MiramichiNew Brunswick, Canada 12 US AQI0.1 times the WHO guideline▼20
not rankedPereslavl’-ZalesskiyYaroslavl Oblast, Russia 12 US AQI0.1 times the WHO guideline
not rankedVelingradPazardzhik, Bulgaria 12 US AQI0.1 times the WHO guideline
not rankedSmolyanSmolyan, Bulgaria 12 US AQI0.1 times the WHO guideline
not rankedAytosBurgas, Bulgaria 12 US AQI0.1 times the WHO guideline
not rankedSilkeborgCentral Jutland, Denmark 12 US AQI0.1 times the WHO guideline
not rankedFarnhamEngland, United Kingdom 12 US AQI0.1 times the WHO guideline
not rankedTäbyStockholm, Sweden 12 US AQI0.1 times the WHO guideline
not rankedViséWallonia, Belgium 12 US AQI0.1 times the WHO guideline
not rankedSehndeLower Saxony, Germany 12 US AQI0.1 times the WHO guideline
not rankedCalwBaden-Wurttemberg, Germany 12 US AQI0.1 times the WHO guideline
not rankedBrilonNorth Rhine-Westphalia, Germany 12 US AQI0.1 times the WHO guideline
not rankedStuartFlorida, United States 12 US AQI0.1 times the WHO guideline
not rankedCastaicCalifornia, United States 12 US AQI0.1 times the WHO guideline
not rankedSaanichBritish Columbia, Canada 12 US AQI0.1 times the WHO guideline
not rankedUnion Hill-Novelty HillWashington, United States 12 US AQI0.1 times the WHO guideline
=2551TamperePirkanmaa, Finland 11 US AQI0.1 times the WHO guideline▼184
=2551SantanaMadeira, Portugal 11 US AQI0.1 times the WHO guideline▼374
=2551Herrsching am AmmerseeBavaria, Germany 11 US AQI0.1 times the WHO guideline▲50
=2551AvellinoCampania, Italy 11 US AQI0.1 times the WHO guideline▼46
=2551GarðabærCapital Region, Iceland 11 US AQI0.1 times the WHO guideline▼695
=2551Saint CloudMinnesota, United States 11 US AQI0.1 times the WHO guideline▼1129
=2551MiddletonWisconsin, United States 11 US AQI0.1 times the WHO guideline
=2551BrossardQuebec, Canada 11 US AQI0.1 times the WHO guideline
=2551L'Ancienne-LoretteQuebec, Canada 11 US AQI0.1 times the WHO guideline▼1185
=2551Rivière-des-Prairies–Pointe-aux-TremblesQuebec, Canada 11 US AQI0.1 times the WHO guideline▼487
not rankedSvilengradHaskovo, Bulgaria 11 US AQI0.1 times the WHO guideline
not rankedSlivenSliven, Bulgaria 11 US AQI0.1 times the WHO guideline
not rankedRakovskiPlovdiv, Bulgaria 11 US AQI0.1 times the WHO guideline
not rankedPeshteraPazardzhik, Bulgaria 11 US AQI0.1 times the WHO guideline
not rankedSalisburyEngland, United Kingdom 11 US AQI0.1 times the WHO guideline
not rankedGodalmingEngland, United Kingdom 11 US AQI0.1 times the WHO guideline
not rankedFleetEngland, United Kingdom 11 US AQI0.1 times the WHO guideline
not rankedVecheldeLower Saxony, Germany 11 US AQI0.1 times the WHO guideline
not rankedArnsbergNorth Rhine-Westphalia, Germany 11 US AQI0.1 times the WHO guideline
not rankedBouguenaisPays de la Loire, France 11 US AQI0.1 times the WHO guideline
not rankedSeeheim-JugenheimHesse, Germany 11 US AQI0.1 times the WHO guideline
not rankedGualacoOlancho Department, Honduras 11 US AQI0.1 times the WHO guideline
not rankedGraftonMassachusetts, United States 11 US AQI0.1 times the WHO guideline
not rankedAntelopeCalifornia, United States 11 US AQI0.1 times the WHO guideline
not rankedNew WestminsterBritish Columbia, Canada no daily values yet11 US AQI0.1 times the WHO guideline
=2561ApatityMurmansk, Russia 11 US AQI0.1 times the WHO guideline▼266
=2561DunedinOtago, New Zealand 11 US AQI0.1 times the WHO guideline▼413
=2561CharleroiWallonia, Belgium 11 US AQI0.1 times the WHO guideline▲88
=2561LahrBaden-Wurttemberg, Germany 11 US AQI0.1 times the WHO guideline
=2561AlfeldLower Saxony, Germany 11 US AQI0.1 times the WHO guideline
=2561DrammenBuskerud, Norway 11 US AQI0.1 times the WHO guideline▼423

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).