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.

=2575HitachiomiyaIbaraki, Japan 38 US AQI1.4 times the WHO guideline▼276
=2575KōkaShiga, Japan 38 US AQI1.4 times the WHO guideline▼275
=2575Aizu-WakamatsuFukushima, Japan 38 US AQI1.4 times the WHO guideline▼274
=2575SodegauraChiba, Japan 38 US AQI1.4 times the WHO guideline▼273
=2575EdertalHesse, Germany 38 US AQI1.4 times the WHO guideline▼365
=2606LaaksolahtiUusimaa, Finland 37 US AQI1.3 times the WHO guideline▼303
=2606HitachiIbaraki, Japan 37 US AQI1.3 times the WHO guideline▼302
=2606HanamakiIwate, Japan 37 US AQI1.3 times the WHO guideline▼301
=2606SapporoHokkaido, Japan 37 US AQI1.3 times the WHO guideline▼300
=2606KitamiHokkaido, Japan 37 US AQI1.3 times the WHO guideline▼299
=2606WollongongNew South Wales, Australia 37 US AQI1.3 times the WHO guideline▼298
=2606YorkEngland, United Kingdom 37 US AQI1.3 times the WHO guideline
=2606NewportWales, United Kingdom 37 US AQI1.3 times the WHO guideline
=2606FarnboroughEngland, United Kingdom 37 US AQI1.3 times the WHO guideline
=2606Burton upon TrentEngland, United Kingdom 37 US AQI1.3 times the WHO guideline
=2606TrochtelfingenBaden-Wurttemberg, Germany 37 US AQI1.3 times the WHO guideline▼296
=2606PortlaoiseLeinster, Ireland 37 US AQI1.3 times the WHO guideline
=2606ToursCentre-Val de Loire, France 37 US AQI1.3 times the WHO guideline▼354
=2606BesançonBourgogne-Franche-Comté, France 37 US AQI1.3 times the WHO guideline
=2606Beaumont-sur-OiseÎle-de-France, France 37 US AQI1.3 times the WHO guideline▼351
=2606AuriolProvence-Alpes-Côte d'Azur, France 37 US AQI1.3 times the WHO guideline▼323
=2606AngoulêmeNew Aquitaine, France 37 US AQI1.3 times the WHO guideline▼289
=2606AvellinoCampania, Italy 37 US AQI1.3 times the WHO guideline
=2606Highland HeightsKentucky, United States 37 US AQI1.3 times the WHO guideline▼287
=2606HalfwayMaryland, United States 37 US AQI1.3 times the WHO guideline▼286
=2606ArnoldMissouri, United States 37 US AQI1.3 times the WHO guideline▼285
=2606DentOhio, United States 37 US AQI1.3 times the WHO guideline▼284
=2606BrocktonMassachusetts, United States 37 US AQI1.3 times the WHO guideline▼283
=2606Ben LomondCalifornia, United States 37 US AQI1.3 times the WHO guideline▼282
=2606BrawleyCalifornia, United States 37 US AQI1.3 times the WHO guideline▼281
=2606El CentroCalifornia, United States 37 US AQI1.3 times the WHO guideline▼316
=2606ThorntonColorado, United States 37 US AQI1.3 times the WHO guideline▼280
=2606RenoNevada, United States 37 US AQI1.3 times the WHO guideline▼279
=2606GreeleyColorado, United States 37 US AQI1.3 times the WHO guideline▼278
=2606Hood RiverOregon, United States 37 US AQI1.3 times the WHO guideline▼313
=2606SmithfieldUtah, United States 37 US AQI1.3 times the WHO guideline▼277
=2606TacomaWashington, United States 37 US AQI1.3 times the WHO guideline▼275
=2606BrossardQuebec, Canada 37 US AQI1.3 times the WHO guideline▼310
=2606ChilliwackBritish Columbia, Canada 37 US AQI1.3 times the WHO guideline▼274
=2606MontréalQuebec, Canada 37 US AQI1.3 times the WHO guideline▼273
=2606Port AlberniBritish Columbia, Canada 37 US AQI1.3 times the WHO guideline▼272
=2606ReginaSaskatchewan, Canada 37 US AQI1.3 times the WHO guideline▼271
=2606SaskatoonSaskatchewan, Canada 37 US AQI1.3 times the WHO guideline▼270
=2606Williams LakeBritish Columbia, Canada 37 US AQI1.3 times the WHO guideline▼268
=2645OmigawaChiba, Japan 37 US AQI1.3 times the WHO guideline▼304
=2645Tōmalast full day 4 OctHokkaido, Japan 37 US AQI1.3 times the WHO guideline▼303
=2645SydneyNew South Wales, Australia 37 US AQI1.3 times the WHO guideline▼302
=2645CanberraAustralian Capital Territory, Australia 37 US AQI1.3 times the WHO guideline▼301
=2645CampbelltownNew South Wales, Australia 37 US AQI1.3 times the WHO guideline▼300
=2645CampillosAndalusia, Spain 37 US AQI1.3 times the WHO guideline
=2645SunderlandEngland, United Kingdom 37 US AQI1.3 times the WHO guideline
=2645ReadingEngland, United Kingdom 37 US AQI1.3 times the WHO guideline
=2645Milton KeynesEngland, United Kingdom 37 US AQI1.3 times the WHO guideline
=2645Market DeepingEngland, United Kingdom 37 US AQI1.3 times the WHO guideline
=2645LoughboroughEngland, United Kingdom 37 US AQI1.3 times the WHO guideline
=2645LeicesterEngland, United Kingdom 37 US AQI1.3 times the WHO guideline
=2645Cheadle HulmeEngland, United Kingdom 37 US AQI1.3 times the WHO guideline
=2645Zell am SeeSalzburg, Austria 37 US AQI1.3 times the WHO guideline▼299
=2645Höhr-Grenzhausenlast full day 10 OctRheinland-Pfalz, Germany 37 US AQI1.3 times the WHO guideline▼298
=2645BendorfRheinland-Pfalz, Germany 37 US AQI1.3 times the WHO guideline▼297
=2645DublinLeinster, Ireland 37 US AQI1.3 times the WHO guideline▼334
=2645CorkMunster, Ireland 37 US AQI1.3 times the WHO guideline
=2645Saint-Étienne-de-MontlucPays de la Loire, France 37 US AQI1.3 times the WHO guideline
=2645OlivetCentre-Val de Loire, France 37 US AQI1.3 times the WHO guideline▼332
=2645AngletNew Aquitaine, France 37 US AQI1.3 times the WHO guideline
=2645DrammenBuskerud, Norway 37 US AQI1.3 times the WHO guideline
=2645FairfieldAlabama, United States no daily values yet37 US AQI1.3 times the WHO guideline▼294
=2645Daytona BeachFlorida, United States 37 US AQI1.3 times the WHO guideline▼293
=2645Deerfield BeachFlorida, United States 37 US AQI1.3 times the WHO guideline▼292
=2645Delray BeachFlorida, United States 37 US AQI1.3 times the WHO guideline▼291
=2645GainesvilleFlorida, United States 37 US AQI1.3 times the WHO guideline▼327
=2645LeawoodKansas, United States 37 US AQI1.3 times the WHO guideline▼290
=2645CookevilleTennessee, United States 37 US AQI1.3 times the WHO guideline▼289
=2645Detroit LakesMinnesota, United States 37 US AQI1.3 times the WHO guideline▼288
=2645WatertownSouth Dakota, United States 37 US AQI1.3 times the WHO guideline▼286
=2645BanningCalifornia, United States 37 US AQI1.3 times the WHO guideline▼285
=2645Galtlast full day 7 OctCalifornia, United States 37 US AQI1.3 times the WHO guideline▼284
=2645LincolnCalifornia, United States 37 US AQI1.3 times the WHO guideline▼283
=2645Santa CruzCalifornia, United States 37 US AQI1.3 times the WHO guideline▼282
=2645The DallesOregon, United States 37 US AQI1.3 times the WHO guideline▼280
=2645Rapid CitySouth Dakota, United States 37 US AQI1.3 times the WHO guideline▼279
=2645ProsserWashington, United States 37 US AQI1.3 times the WHO guideline▼315
=2645SheridanWyoming, United States 37 US AQI1.3 times the WHO guideline▼278
=2645Kailua-Konalast full day 30 SeptHawaii, United States 37 US AQI1.3 times the WHO guideline▼277
=2645St. AlbertAlberta, Canada 37 US AQI1.3 times the WHO guideline▼308
=2645Swift CurrentSaskatchewan, Canada 37 US AQI1.3 times the WHO guideline▼276
=2645QuébecQuebec, Canada 37 US AQI1.3 times the WHO guideline▼305
=2688HelsinkiUusimaa, Finland 36 US AQI1.3 times the WHO guideline▼316
=2688SakuNagano, Japan 36 US AQI1.3 times the WHO guideline▼293
=2688NonoichiIshikawa, Japan 36 US AQI1.3 times the WHO guideline▼315
=2688ObihiroHokkaido, Japan 36 US AQI1.3 times the WHO guideline▼314
=2688StawellVictoria, Australia 36 US AQI1.3 times the WHO guideline▼313
=2688MackayQueensland, Australia 36 US AQI1.3 times the WHO guideline▼270
=2688Los BarriosAndalusia, Spain 36 US AQI1.3 times the WHO guideline
=2688PrestonEngland, United Kingdom 36 US AQI1.3 times the WHO guideline
=2688ChesterfieldEngland, United Kingdom 36 US AQI1.3 times the WHO guideline
=2688ChepstowWales, United Kingdom 36 US AQI1.3 times the WHO guideline
=2688BurwellEngland, United Kingdom 36 US AQI1.3 times the WHO guideline
=2688BirminghamEngland, United Kingdom 36 US AQI1.3 times the WHO guideline▼537
=2688FreistadtUpper Austria, Austria 36 US AQI1.3 times the WHO guideline▼312

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).