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.

=1782Forest GroveOregon, United States 28 US AQI0.3 times the WHO guideline▼73
=1782SalemOregon, United States 28 US AQI0.3 times the WHO guideline▲312
=1782Airway HeightsWashington, United States 28 US AQI0.3 times the WHO guideline▲219
=1782ShorelineWashington, United States 28 US AQI0.3 times the WHO guideline▼186
=1782TulalipWashington, United States 28 US AQI0.3 times the WHO guideline▲114
=1782ŌshūIwate, Japan 28 US AQI0.3 times the WHO guideline▼852
=1782Helena Valley West CentralMontana, United States 28 US AQI0.3 times the WHO guideline▲664
not rankedZwijndrechtSouth Holland, The Netherlands 28 US AQI0.3 times the WHO guideline
not rankedPurmerendNorth Holland, The Netherlands 28 US AQI0.3 times the WHO guideline
not rankedLebbekeFlanders, Belgium 28 US AQI0.3 times the WHO guideline
not rankedWallenhorstLower Saxony, Germany 28 US AQI0.3 times the WHO guideline
not rankedKornwestheimBaden-Wurttemberg, Germany 28 US AQI0.3 times the WHO guideline
not rankedHamelnLower Saxony, Germany 28 US AQI0.3 times the WHO guideline
not rankedSant Cugat del VallèsCatalonia, Spain 28 US AQI0.3 times the WHO guideline
not rankedNarragansettRhode Island, United States 28 US AQI0.3 times the WHO guideline
=1806NakhabinoMoscow Oblast, Russia 28 US AQI0.3 times the WHO guideline▼427
=1806LyubertsyMoscow Oblast, Russia 28 US AQI0.3 times the WHO guideline▼1803
=1806VallettaValletta, Malta 28 US AQI0.3 times the WHO guideline▼618
=1806OxfordEngland, United Kingdom 28 US AQI0.3 times the WHO guideline▲812
=1806LutonEngland, United Kingdom 28 US AQI0.3 times the WHO guideline▲538
=1806EdinburghScotland, United Kingdom 28 US AQI0.3 times the WHO guideline▲716
=1806BradfordEngland, United Kingdom 28 US AQI0.3 times the WHO guideline▼401
=1806BlackburnEngland, United Kingdom 28 US AQI0.3 times the WHO guideline▲540
=1806AndoverEngland, United Kingdom 28 US AQI0.3 times the WHO guideline▲855
=1806BülachZurich, Switzerland 28 US AQI0.3 times the WHO guideline
=1806BadhoevedorpNorth Holland, The Netherlands 28 US AQI0.3 times the WHO guideline▼200
=1806TournaiWallonia, Belgium 28 US AQI0.3 times the WHO guideline▲731
=1806GrimbergenFlanders, Belgium 28 US AQI0.3 times the WHO guideline▼19
=1806DammeFlanders, Belgium 28 US AQI0.3 times the WHO guideline▼58
=1806Saint-QuentinHauts-de-France, France 28 US AQI0.3 times the WHO guideline▲207
=1806La Roche-sur-YonPays de la Loire, France 28 US AQI0.3 times the WHO guideline▲674
=1806CaenNormandy, France 28 US AQI0.3 times the WHO guideline▲471
=1806Atlantic CityNew Jersey, United States 28 US AQI0.3 times the WHO guideline
=1806Timberwood ParkTexas, United States 28 US AQI0.3 times the WHO guideline▲52
=1806OmahaNebraska, United States 28 US AQI0.3 times the WHO guideline▼286
=1806Fort CollinsColorado, United States 28 US AQI0.3 times the WHO guideline▲248
=1806Coos BayOregon, United States 28 US AQI0.3 times the WHO guideline▼282
=1806Grants PassOregon, United States 28 US AQI0.3 times the WHO guideline▲164
=1806HillsboroOregon, United States 28 US AQI0.3 times the WHO guideline▼255
=1806DeltaBritish Columbia, Canada 28 US AQI0.3 times the WHO guideline▲362
=1806SquamishBritish Columbia, Canada 28 US AQI0.3 times the WHO guideline▲257
not rankedDomodedovoMoscow Oblast, Russia 28 US AQI0.3 times the WHO guideline
not rankedSandanskiBlagoevgrad, Bulgaria 28 US AQI0.3 times the WHO guideline
not rankedMonçãoViana do Castelo, Portugal 28 US AQI0.3 times the WHO guideline
not rankedBussumNorth Holland, The Netherlands 28 US AQI0.3 times the WHO guideline
not rankedBergen op ZoomNorth Brabant, The Netherlands 28 US AQI0.3 times the WHO guideline
not rankedBramscheLower Saxony, Germany 28 US AQI0.3 times the WHO guideline
not rankedAlzenau in UnterfrankenBavaria, Germany 28 US AQI0.3 times the WHO guideline
not rankedClusesAuvergne-Rhône-Alpes, France 28 US AQI0.3 times the WHO guideline
not rankedRakovníkCentral Bohemia, Czechia 28 US AQI0.3 times the WHO guideline
not rankedMilpitasCalifornia, United States 28 US AQI0.3 times the WHO guideline
not rankedKirklandWashington, United States 28 US AQI0.3 times the WHO guideline
not rankedOlympiaWashington, United States 28 US AQI0.3 times the WHO guideline
=1832KyivKyiv City, Ukraine 27 US AQI0.3 times the WHO guideline▼501
=1832Veľká LomnicaPrešov Region, Slovakia 27 US AQI0.3 times the WHO guideline
=1832GabrovoGabrovo, Bulgaria 27 US AQI0.3 times the WHO guideline▲342
=1832OlsztynWarmia-Masuria, Poland 27 US AQI0.3 times the WHO guideline▲377
=1832TamworthNew South Wales, Australia 27 US AQI0.3 times the WHO guideline
=1832GillinghamEngland, United Kingdom 27 US AQI0.3 times the WHO guideline▲833
=1832BorehamwoodEngland, United Kingdom 27 US AQI0.3 times the WHO guideline▲640
=1832WoerdenUtrecht, The Netherlands 27 US AQI0.3 times the WHO guideline
=1832LunterenGelderland, The Netherlands 27 US AQI0.3 times the WHO guideline▼326
=1832LeidenSouth Holland, The Netherlands 27 US AQI0.3 times the WHO guideline
=1832LeekGroningen, The Netherlands 27 US AQI0.3 times the WHO guideline▲114
=1832KollumFriesland, The Netherlands 27 US AQI0.3 times the WHO guideline▲298
=1832EnkhuizenNorth Holland, The Netherlands 27 US AQI0.3 times the WHO guideline
=1832AmstelveenNorth Holland, The Netherlands 27 US AQI0.3 times the WHO guideline
=1832LienzTyrol, Austria 27 US AQI0.3 times the WHO guideline▲241
=1832Weinstadt-EndersbachBaden-Wurttemberg, Germany 27 US AQI0.3 times the WHO guideline
=1832OytenLower Saxony, Germany 27 US AQI0.3 times the WHO guideline▼681
=1832SwordsLeinster, Ireland 27 US AQI0.3 times the WHO guideline▲620
=1832Saint-Étienne-de-MontlucPays de la Loire, France 27 US AQI0.3 times the WHO guideline▲672
=1832LormontNew Aquitaine, France 27 US AQI0.3 times the WHO guideline▼320
=1832GapProvence-Alpes-Côte d'Azur, France 27 US AQI0.3 times the WHO guideline▼138
=1832PodgoricaPodgorica, Montenegro 27 US AQI0.3 times the WHO guideline
=1832MalmesburyWestern Cape, South Africa 27 US AQI0.3 times the WHO guideline▼58
=1832Le RobertMartinique, Martinique 27 US AQI0.3 times the WHO guideline▼317
=1832SeafordDelaware, United States 27 US AQI0.3 times the WHO guideline▲624
=1832Deerfield BeachFlorida, United States 27 US AQI0.3 times the WHO guideline▼213
=1832North AdamsMassachusetts, United States 27 US AQI0.3 times the WHO guideline▲571
=1832Sioux FallsSouth Dakota, United States 27 US AQI0.3 times the WHO guideline▼735
=1832Chula VistaCalifornia, United States 27 US AQI0.3 times the WHO guideline▼125
=1832FlorinCalifornia, United States 27 US AQI0.3 times the WHO guideline▼333
=1832SocorroTexas, United States 27 US AQI0.3 times the WHO guideline▼604
=1832Port CoquitlamBritish Columbia, Canada 27 US AQI0.3 times the WHO guideline▲230
not rankedPervouralskSverdlovsk Oblast, Russia 27 US AQI0.3 times the WHO guideline
not rankedMedvedevoMariy-El Republic, Russia 27 US AQI0.3 times the WHO guideline
not rankedResenResen, North Macedonia 27 US AQI0.3 times the WHO guideline
not rankedKurganKurgan Oblast, Russia 27 US AQI0.3 times the WHO guideline
not rankedRoosendaalNorth Brabant, The Netherlands 27 US AQI0.3 times the WHO guideline
not rankedLichtenvoordeGelderland, The Netherlands 27 US AQI0.3 times the WHO guideline
not rankedElstGelderland, The Netherlands 27 US AQI0.3 times the WHO guideline
not rankedWesterstedeLower Saxony, Germany 27 US AQI0.3 times the WHO guideline
not rankedLauchhammerBrandenburg, Germany 27 US AQI0.3 times the WHO guideline
not rankedWoodridgeIllinois, United States 27 US AQI0.3 times the WHO guideline
not rankedStevenson RanchCalifornia, United States 27 US AQI0.3 times the WHO guideline
not rankedEisleben LutherstadtSaxony-Anhalt, Germany 27 US AQI0.3 times the WHO guideline
=1864SydneyNew South Wales, Australia 27 US AQI0.3 times the WHO guideline▼384
=1864MuswellbrookNew South Wales, Australia 27 US AQI0.3 times the WHO guideline▼758
=1864MaitlandNew South Wales, Australia 27 US AQI0.3 times the WHO guideline▼840

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).