All 3,198 cities by PM2.5, this year

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 show older figures or are missing from this board, not clean.

2882ŌshūIwate, Japan 32 US AQI1.2 times the WHO guideline▼347
=2902LappeenrantaSouth Karelia, Finland 32 US AQI1.1 times the WHO guideline▼365
=2902InaNagano, Japan 32 US AQI1.1 times the WHO guideline▼364
=2902MaryboroughQueensland, Australia 32 US AQI1.1 times the WHO guideline▼383
=2902AmoraSetúbal, Portugal 32 US AQI1.1 times the WHO guideline
=2902CharleroiWallonia, Belgium 32 US AQI1.1 times the WHO guideline▼381
=2902Roetgenlast full day 10 OctNorth Rhine-Westphalia, Germany 32 US AQI1.1 times the WHO guideline▼401
=2902CavanUlster, Ireland 32 US AQI1.1 times the WHO guideline▼380
=2902La Ferté-MacéNormandy, France 32 US AQI1.1 times the WHO guideline▼379
=2902CorteCorsica, France 32 US AQI1.1 times the WHO guideline
=2902TelfordEngland, United Kingdom 32 US AQI1.1 times the WHO guideline
=2902Palm BayFlorida, United States 32 US AQI1.1 times the WHO guideline▼362
=2902BangorMaine, United States 32 US AQI1.1 times the WHO guideline▼375
=2902ProvidenceRhode Island, United States 32 US AQI1.1 times the WHO guideline▼360
=2902HartfordVermont, United States 32 US AQI1.1 times the WHO guideline▼359
=2902ChicoCalifornia, United States 32 US AQI1.1 times the WHO guideline▼358
=2902ConcordCalifornia, United States 32 US AQI1.1 times the WHO guideline▼357
=2902OjaiCalifornia, United States 32 US AQI1.1 times the WHO guideline▼355
=2902Thousand OaksCalifornia, United States 32 US AQI1.1 times the WHO guideline▼391
=2902DenverColorado, United States 32 US AQI1.1 times the WHO guideline▼354
=2902LubbockTexas, United States 32 US AQI1.1 times the WHO guideline▼353
=2902GreshamOregon, United States 32 US AQI1.1 times the WHO guideline▼352
=2902AbbotsfordBritish Columbia, Canada 32 US AQI1.1 times the WHO guideline▼369
=2902Greater SudburyOntario, Canada 32 US AQI1.1 times the WHO guideline▼350
=2902SquamishBritish Columbia, Canada 32 US AQI1.1 times the WHO guideline▼349
=2902AintreeVictoria, Australia 32 US AQI1.1 times the WHO guideline▼348
=2902KallahtiUusimaa, Finland 32 US AQI1.1 times the WHO guideline▼347
=2902Harewoodlast full day 5 OctBritish Columbia, Canada 32 US AQI1.1 times the WHO guideline▼346
=2929KushiroHokkaido, Japan 31 US AQI1.1 times the WHO guideline▼371
=2929GeelongVictoria, Australia 31 US AQI1.1 times the WHO guideline▼390
=2929GlasgowScotland, United Kingdom 31 US AQI1.1 times the WHO guideline
=2929AberdeenScotland, United Kingdom 31 US AQI1.1 times the WHO guideline
=2929Kirchzartenlast full day 9 OctBaden-Wurttemberg, Germany 31 US AQI1.1 times the WHO guideline▼355
=2929GlashüttenHesse, Germany 31 US AQI1.1 times the WHO guideline▼370
=2929PittsfieldMassachusetts, United States 31 US AQI1.1 times the WHO guideline▼369
=2929QuincyMassachusetts, United States 31 US AQI1.1 times the WHO guideline▼368
=2929LewistonMaine, United States 31 US AQI1.1 times the WHO guideline▼367
=2929BellevueNebraska, United States 31 US AQI1.1 times the WHO guideline▼366
=2929La VistaNebraska, United States 31 US AQI1.1 times the WHO guideline▼365
=2929PortsmouthNew Hampshire, United States 31 US AQI1.1 times the WHO guideline▼388
=2929CrestlineCalifornia, United States 31 US AQI1.1 times the WHO guideline▼383
=2929SebastopolCalifornia, United States 31 US AQI1.1 times the WHO guideline▼401
=2929AlbanyOregon, United States 31 US AQI1.1 times the WHO guideline▼364
=2929SalemOregon, United States 31 US AQI1.1 times the WHO guideline▼363
=2929Cedar Hillslast full day 11 OctUtah, United States 31 US AQI1.1 times the WHO guideline▼362
=2929BellinghamWashington, United States 31 US AQI1.1 times the WHO guideline▼361
=2929Port AngelesWashington, United States 31 US AQI1.1 times the WHO guideline▼360
=2929Fort St. JohnBritish Columbia, Canada 31 US AQI1.1 times the WHO guideline▼378
=2949MorwellVictoria, Australia 31 US AQI1.1 times the WHO guideline▼379
=2949GoulburnNew South Wales, Australia 31 US AQI1.1 times the WHO guideline▼378
=2949MiddlesbroughEngland, United Kingdom 31 US AQI1.1 times the WHO guideline
=2949HonitonEngland, United Kingdom 31 US AQI1.1 times the WHO guideline
=2949SwordsLeinster, Ireland 31 US AQI1.1 times the WHO guideline
=2949East LakeFlorida, United States 31 US AQI1.1 times the WHO guideline▼374
=2949Red Hilllast full day 5 OctSouth Carolina, United States 31 US AQI1.1 times the WHO guideline▼373
=2949North ChicopeeMassachusetts, United States 31 US AQI1.1 times the WHO guideline▼372
=2949UxbridgeMassachusetts, United States 31 US AQI1.1 times the WHO guideline▼371
=2949EnochUtah, United States 31 US AQI1.1 times the WHO guideline▼369
=2949Crescent CityCalifornia, United States 31 US AQI1.1 times the WHO guideline▼368
=2949AshlandOregon, United States 31 US AQI1.1 times the WHO guideline▼367
=2949CanbyOregon, United States 31 US AQI1.1 times the WHO guideline▼366
=2949Columbia CityWashington, United States 31 US AQI1.1 times the WHO guideline
=2949North BayOntario, Canada 31 US AQI1.1 times the WHO guideline▼365
=2949SherbrookeQuebec, Canada 31 US AQI1.1 times the WHO guideline▼364
=2965TartuTartu, Estonia 30 US AQI1.1 times the WHO guideline▼408
=2965GreenockScotland, United Kingdom 30 US AQI1.1 times the WHO guideline
=2965GrangemouthScotland, United Kingdom 30 US AQI1.1 times the WHO guideline
=2965SurseeLucerne, Switzerland 30 US AQI1.1 times the WHO guideline▼353
=2965TournaiWallonia, Belgium 30 US AQI1.1 times the WHO guideline▼392
=2965NamurWallonia, Belgium 30 US AQI1.1 times the WHO guideline▼378
=2965Netphenlast full day 10 OctNorth Rhine-Westphalia, Germany 30 US AQI1.1 times the WHO guideline
=2965Braunlagelast full day 10 OctLower Saxony, Germany 30 US AQI1.1 times the WHO guideline▼377
=2965AurillacAuvergne-Rhône-Alpes, France 30 US AQI1.1 times the WHO guideline▼376
=2965RijekaPrimorje-Gorski Kotar, Croatia 30 US AQI1.1 times the WHO guideline
=2965MarvinNorth Carolina, United States 30 US AQI1.1 times the WHO guideline▼375
=2965LondonderryNew Hampshire, United States 30 US AQI1.1 times the WHO guideline▼374
=2965Casas AdobesArizona, United States 30 US AQI1.1 times the WHO guideline▼373
=2965TracyCalifornia, United States 30 US AQI1.1 times the WHO guideline▼371
=2965WillowsCalifornia, United States 30 US AQI1.1 times the WHO guideline▼386
=2965Colorado SpringsColorado, United States 30 US AQI1.1 times the WHO guideline▼369
=2965Spanish SpringsNevada, United States 30 US AQI1.1 times the WHO guideline▼368
=2965Red BluffCalifornia, United States 30 US AQI1.1 times the WHO guideline▼367
=2965Idaho FallsIdaho, United States 30 US AQI1.1 times the WHO guideline▼365
=2965Oregon CityOregon, United States 30 US AQI1.1 times the WHO guideline▼357
=2965ParklandWashington, United States 30 US AQI1.1 times the WHO guideline▼364
=2965GibsonsBritish Columbia, Canada 30 US AQI1.1 times the WHO guideline▼363
=2965SaguenayQuebec, Canada 30 US AQI1.1 times the WHO guideline▼362
=2965VictoriaBritish Columbia, Canada 30 US AQI1.1 times the WHO guideline▼361
=2989Uticalast full day 11 OctNew York, United States 29 US AQI1.1 times the WHO guideline▼383
=2989PawtucketRhode Island, United States 29 US AQI1.1 times the WHO guideline▼382
=2989AlamosaColorado, United States 29 US AQI1.1 times the WHO guideline▼394
=2989GreenOregon, United States 29 US AQI1.1 times the WHO guideline▼371
=2989Saint-Jean-sur-RichelieuQuebec, Canada 29 US AQI1.1 times the WHO guideline▼380
=2989Picnic Point-North LynnwoodWashington, United States 29 US AQI1.1 times the WHO guideline▼379
=2989High PeakEngland, United Kingdom 29 US AQI1.1 times the WHO guideline
=2996LahtiPaijat-Hame, Finland 29 US AQI1.0 times the WHO guideline▼385
=2996ChampionWallonia, Belgium 29 US AQI1.0 times the WHO guideline▼391
=2996Rabo de PeixeAzores, Portugal 29 US AQI1.0 times the WHO guideline
=2996Newburghlast full day 11 OctNew York, United States 29 US AQI1.0 times the WHO guideline▼383
=2996Big Bear CityCalifornia, United States 29 US AQI1.0 times the WHO guideline▼382

What stands behind each figure: Checked at 2+ sites One reference monitor Low-cost sensors 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), this year to 14 Oct 2026, 06:00 UTC: each city's mean of its daily means, cities measured on 70% or more of the days since 1 January (at least 14). Monitor data from national networks via OpenAQ and the publishers listed at smogrank.com/sources. smogrank.com/rankings?w=year. Ranked on low-cost sensors, with no reference monitor in the city: #2 Faisalabad, #3 Gujranwala and #6 Lahore. Some values from Sensor.Community, ODbL. Some readings from Department of Environment, Nepal; Vietnam's government monitors; Aurassure; RMCAB (Secretaría Distrital de Ambiente, Bogotá); Umhverfisstofnun (Environment Agency of Iceland), no reuse terms published.

Download top 10 (PNG)

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 06:07 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: Department of Environment, Nepal; Vietnam's government monitors; Aurassure; RMCAB (Secretaría Distrital de Ambiente, Bogotá); Umhverfisstofnun (Environment Agency of Iceland), no reuse terms published (why we use them).