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.

=1994BurnabyBritish Columbia, Canada 24 US AQI0.3 times the WHO guideline▲299
=1994CalgaryAlberta, Canada 24 US AQI0.3 times the WHO guideline▲209
=1994LangleyBritish Columbia, Canada 24 US AQI0.3 times the WHO guideline▲150
not rankedSochiKrasnodar Krai, Russia 24 US AQI0.3 times the WHO guideline
not rankedBerkovitsaMontana, Bulgaria 24 US AQI0.3 times the WHO guideline
not rankedBurgess HillEngland, United Kingdom 24 US AQI0.3 times the WHO guideline
not rankedWijchenGelderland, The Netherlands 24 US AQI0.3 times the WHO guideline
not rankedOud-BeijerlandSouth Holland, The Netherlands 24 US AQI0.3 times the WHO guideline
not rankedBilthovenUtrecht, The Netherlands 24 US AQI0.3 times the WHO guideline
not rankedSchortensLower Saxony, Germany 24 US AQI0.3 times the WHO guideline
not rankedLohneLower Saxony, Germany 24 US AQI0.3 times the WHO guideline
not rankedHeilbad HeiligenstadtThuringia, Germany 24 US AQI0.3 times the WHO guideline
not rankedPomeziaLazio, Italy 24 US AQI0.3 times the WHO guideline
not rankedRancho CucamongaCalifornia, United States 24 US AQI0.3 times the WHO guideline
not rankedLongfellow CommunityMinnesota, United States 24 US AQI0.3 times the WHO guideline
=2020LappeenrantaSouth Karelia, Finland 24 US AQI0.3 times the WHO guideline▲289
=2020SaltashEngland, United Kingdom 24 US AQI0.3 times the WHO guideline▲638
=2020DoncasterEngland, United Kingdom 24 US AQI0.3 times the WHO guideline▼335
=2020CoventryEngland, United Kingdom 24 US AQI0.3 times the WHO guideline▲194
=2020Vaihingen an der EnzBaden-Wurttemberg, Germany 24 US AQI0.3 times the WHO guideline
=2020RotenburgLower Saxony, Germany 24 US AQI0.3 times the WHO guideline▼817
=2020Neuenburg am RheinBaden-Wurttemberg, Germany 24 US AQI0.3 times the WHO guideline▼205
=2020Salon-de-ProvenceProvence-Alpes-Côte d'Azur, France 24 US AQI0.3 times the WHO guideline▲18
=2020Saint-MaloBrittany, France 24 US AQI0.3 times the WHO guideline
=2020ParisÎle-de-France, France 24 US AQI0.3 times the WHO guideline▼509
=2020LunelOccitanie, France 24 US AQI0.3 times the WHO guideline▼102
=2020JuignéPays de la Loire, France 24 US AQI0.3 times the WHO guideline▲87
=2020Presidente PrudenteSão Paulo, Brazil 24 US AQI0.3 times the WHO guideline▼646
=2020Cedar ParkTexas, United States 24 US AQI0.3 times the WHO guideline▼133
=2020RichmondCalifornia, United States 24 US AQI0.3 times the WHO guideline▼1021
=2020South Lake TahoeCalifornia, United States 24 US AQI0.3 times the WHO guideline▼844
=2020AnthonyNew Mexico, United States 24 US AQI0.3 times the WHO guideline▼52
=2020WindsorColorado, United States 24 US AQI0.3 times the WHO guideline▼51
=2020Twin FallsIdaho, United States 24 US AQI0.3 times the WHO guideline▼126
=2020BismarckNorth Dakota, United States 24 US AQI0.3 times the WHO guideline▲615
=2020McMinnvilleOregon, United States 24 US AQI0.3 times the WHO guideline▲210
=2020RidgefieldWashington, United States 24 US AQI0.3 times the WHO guideline▲38
=2020PalmerAlaska, United States 24 US AQI0.3 times the WHO guideline▲97
=2020KingstonOntario, Canada 24 US AQI0.3 times the WHO guideline▲100
=2020Red DeerAlberta, Canada 24 US AQI0.3 times the WHO guideline▲345
not rankedDobrichDobrich, Bulgaria 24 US AQI0.3 times the WHO guideline
not rankedBarrow in FurnessEngland, United Kingdom 24 US AQI0.3 times the WHO guideline
not rankedLochristiFlanders, Belgium 24 US AQI0.3 times the WHO guideline
not rankedWillichNorth Rhine-Westphalia, Germany 24 US AQI0.3 times the WHO guideline
not rankedUnterschleißheimBavaria, Germany 24 US AQI0.3 times the WHO guideline
not rankedUelzenLower Saxony, Germany 24 US AQI0.3 times the WHO guideline
not rankedOerlinghausenNorth Rhine-Westphalia, Germany 24 US AQI0.3 times the WHO guideline
not rankedBad HarzburgLower Saxony, Germany 24 US AQI0.3 times the WHO guideline
not rankedArlingtonMassachusetts, United States 24 US AQI0.3 times the WHO guideline
not rankedRio LindaCalifornia, United States 24 US AQI0.3 times the WHO guideline
not rankedSan MateoCalifornia, United States 24 US AQI0.3 times the WHO guideline
=2045MostaIl-Mosta, Malta 23 US AQI0.3 times the WHO guideline▼390
=2045ZutphenGelderland, The Netherlands 23 US AQI0.3 times the WHO guideline
=2045LeusdenUtrecht, The Netherlands 23 US AQI0.3 times the WHO guideline▼463
=2045DrachtenFriesland, The Netherlands 23 US AQI0.3 times the WHO guideline
=2045LiègeWallonia, Belgium 23 US AQI0.3 times the WHO guideline▲29
=2045TaunussteinHesse, Germany 23 US AQI0.3 times the WHO guideline▲170
=2045NordhornLower Saxony, Germany 23 US AQI0.3 times the WHO guideline
=2045Limbach-OberfrohnaSaxony, Germany 23 US AQI0.3 times the WHO guideline
=2045HammNorth Rhine-Westphalia, Germany 23 US AQI0.3 times the WHO guideline
=2045ValenceAuvergne-Rhône-Alpes, France 23 US AQI0.3 times the WHO guideline▲34
=2045L'Isle-d'AbeauAuvergne-Rhône-Alpes, France 23 US AQI0.3 times the WHO guideline▼126
=2045ForbachGrand Est, France 23 US AQI0.3 times the WHO guideline▼601
=2045ÉpernayGrand Est, France 23 US AQI0.3 times the WHO guideline
=2045KołobrzegWest Pomerania, Poland 23 US AQI0.3 times the WHO guideline▲577
=2045NaplesCampania, Italy 23 US AQI0.3 times the WHO guideline▼401
=2045ArnoldMissouri, United States 23 US AQI0.3 times the WHO guideline▼548
=2045NogalesArizona, United States 23 US AQI0.3 times the WHO guideline▲6
=2045TemeculaCalifornia, United States 23 US AQI0.3 times the WHO guideline▲96
=2045Sunland ParkNew Mexico, United States 23 US AQI0.3 times the WHO guideline▼241
=2045RenoNevada, United States 23 US AQI0.3 times the WHO guideline▼22
=2045MoabUtah, United States 23 US AQI0.3 times the WHO guideline▼108
=2045BoulderColorado, United States 23 US AQI0.3 times the WHO guideline▲397
=2045AshlandOregon, United States 23 US AQI0.3 times the WHO guideline▲214
=2045LongviewWashington, United States 23 US AQI0.3 times the WHO guideline▼239
=2045KahuluiHawaii, United States 23 US AQI0.3 times the WHO guideline▲542
=2045Parry SoundOntario, Canada 23 US AQI0.3 times the WHO guideline▲51
=2045Oxon Hill-GlassmanorMaryland, United States 23 US AQI0.3 times the WHO guideline
not rankedNovokuznetskKuzbass, Russia 23 US AQI0.3 times the WHO guideline
not rankedKampenOverijssel, The Netherlands 23 US AQI0.3 times the WHO guideline
not rankedHardenbergOverijssel, The Netherlands 23 US AQI0.3 times the WHO guideline
not rankedEekloFlanders, Belgium 23 US AQI0.3 times the WHO guideline
not rankedSangerhausenSaxony-Anhalt, Germany 23 US AQI0.3 times the WHO guideline
not rankedNeumünsterSchleswig-Holstein, Germany 23 US AQI0.3 times the WHO guideline
not rankedKronachBavaria, Germany 23 US AQI0.3 times the WHO guideline
not rankedHerzogenrathNorth Rhine-Westphalia, Germany 23 US AQI0.3 times the WHO guideline
not rankedErkrathNorth Rhine-Westphalia, Germany 23 US AQI0.3 times the WHO guideline
not rankedBad SalzungenThuringia, Germany 23 US AQI0.3 times the WHO guideline
not rankedCinco RanchTexas, United States 23 US AQI0.3 times the WHO guideline
not rankedFresnoTexas, United States 23 US AQI0.3 times the WHO guideline
not rankedSayvilleNew York, United States 23 US AQI0.3 times the WHO guideline
=2072VolosThessaly, Greece 23 US AQI0.3 times the WHO guideline▼293
=2072VidnoyeMoscow Oblast, Russia 23 US AQI0.3 times the WHO guideline
=2072San Pawl il-BaħarSaint Paul’s Bay, Malta 23 US AQI0.3 times the WHO guideline▼261
=2072DerryNorthern Ireland, United Kingdom 23 US AQI0.3 times the WHO guideline▲610
=2072Royal Leamington SpaEngland, United Kingdom 23 US AQI0.3 times the WHO guideline▲425
=2072DewsburyEngland, United Kingdom 23 US AQI0.3 times the WHO guideline▼442
=2072Burton upon TrentEngland, United Kingdom 23 US AQI0.3 times the WHO guideline▲109
=2072ÖrebroÖrebro, Sweden 23 US AQI0.3 times the WHO guideline▲485
=2072VeendamGroningen, The Netherlands 23 US AQI0.3 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).