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.

=2373BrainerdMinnesota, United States 41 US AQI1.5 times the WHO guideline▼241
=2373TrentonNew Jersey, United States 41 US AQI1.5 times the WHO guideline▼239
=2373PainesvilleOhio, United States 41 US AQI1.5 times the WHO guideline▼238
=2373Weirton HeightsWest Virginia, United States 41 US AQI1.5 times the WHO guideline▼237
=2373ButteMontana, United States 41 US AQI1.5 times the WHO guideline▼234
=2373EllensburgWashington, United States 41 US AQI1.5 times the WHO guideline▼233
=2373AmamiKagoshima, Japan 41 US AQI1.5 times the WHO guideline▼232
=2373YonoOsaka, Japan 41 US AQI1.5 times the WHO guideline▼231
=2373Jordan SpringsNew South Wales, Australia 41 US AQI1.5 times the WHO guideline▼230
=2410UenoharaYamanashi, Japan 40 US AQI1.4 times the WHO guideline▼265
=2410FujiedaShizuoka, Japan 40 US AQI1.4 times the WHO guideline▼264
=2410SendaiMiyagi, Japan 40 US AQI1.4 times the WHO guideline▼263
=2410MobaraChiba, Japan 40 US AQI1.4 times the WHO guideline▼262
=2410IchinosekiIwate, Japan 40 US AQI1.4 times the WHO guideline▼261
=2410ArmidaleNew South Wales, Australia 40 US AQI1.4 times the WHO guideline▼260
=2410SouthamptonEngland, United Kingdom 40 US AQI1.4 times the WHO guideline
=2410LutonEngland, United Kingdom 40 US AQI1.4 times the WHO guideline
=2410ChristchurchEngland, United Kingdom 40 US AQI1.4 times the WHO guideline
=2410GothenburgVästra Götaland, Sweden 40 US AQI1.4 times the WHO guideline▼258
=2410BrusselsBrussels Capital, Belgium 40 US AQI1.4 times the WHO guideline▼289
=2410Flensburglast full day 10 OctSchleswig-Holstein, Germany 40 US AQI1.4 times the WHO guideline▼318
=2410GrevenmacherGrevenmacher, Luxembourg 40 US AQI1.4 times the WHO guideline▼253
=2410RambouilletÎle-de-France, France 40 US AQI1.4 times the WHO guideline▼352
=2410LunelOccitanie, France 40 US AQI1.4 times the WHO guideline
=2410ChartresCentre-Val de Loire, France 40 US AQI1.4 times the WHO guideline▼440
=2410CaenNormandy, France 40 US AQI1.4 times the WHO guideline▼287
=2410BastiaCorsica, France 40 US AQI1.4 times the WHO guideline▼347
=2410FredrikstadØstfold, Norway 40 US AQI1.4 times the WHO guideline
=2410BrumunddalInnlandet, Norway 40 US AQI1.4 times the WHO guideline
=2410PaducahKentucky, United States 40 US AQI1.4 times the WHO guideline▼250
=2410Fort SmithArkansas, United States 40 US AQI1.4 times the WHO guideline▼249
=2410SeafordDelaware, United States 40 US AQI1.4 times the WHO guideline▼248
=2410TampaFlorida, United States 40 US AQI1.4 times the WHO guideline▼247
=2410University CityMissouri, United States 40 US AQI1.4 times the WHO guideline▼245
=2410PaulsboroNew Jersey, United States 40 US AQI1.4 times the WHO guideline▼281
=2410LebanonOhio, United States 40 US AQI1.4 times the WHO guideline▼244
=2410PoquosonVirginia, United States 40 US AQI1.4 times the WHO guideline▼243
=2410DanburyConnecticut, United States 40 US AQI1.4 times the WHO guideline▼242
=2410WaterburyConnecticut, United States 40 US AQI1.4 times the WHO guideline▼241
=2410AnkenyIowa, United States 40 US AQI1.4 times the WHO guideline▼240
=2410BraidwoodIllinois, United States 40 US AQI1.4 times the WHO guideline▼239
=2410CloquetMinnesota, United States 40 US AQI1.4 times the WHO guideline▼277
=2410MendhamNew Jersey, United States 40 US AQI1.4 times the WHO guideline▼237
=2410New AlbanyOhio, United States 40 US AQI1.4 times the WHO guideline▼236
=2410AltoonaPennsylvania, United States 40 US AQI1.4 times the WHO guideline▼235
=2410FremontCalifornia, United States 40 US AQI1.4 times the WHO guideline▲98
=2410GridleyCalifornia, United States 40 US AQI1.4 times the WHO guideline▼234
=2410IndioCalifornia, United States 40 US AQI1.4 times the WHO guideline▼233
=2410RedmondOregon, United States 40 US AQI1.4 times the WHO guideline▼206
=2410Salt Lake CityUtah, United States 40 US AQI1.4 times the WHO guideline▼232
=2410Sault Ste. MarieOntario, Canada 40 US AQI1.4 times the WHO guideline▼203
=2410St. CatharinesOntario, Canada 40 US AQI1.4 times the WHO guideline▼231
=2410Oyabelast full day 22 SeptToyama, Japan 40 US AQI1.4 times the WHO guideline▼230
=2454KastoriaWest Macedonia, Greece 39 US AQI1.4 times the WHO guideline
=2454UedaNagano, Japan 39 US AQI1.4 times the WHO guideline▼273
=2454TateyamaChiba, Japan 39 US AQI1.4 times the WHO guideline▼272
=2454SakaiminatoTottori, Japan 39 US AQI1.4 times the WHO guideline▼271
=2454HamakitaShizuoka, Japan 39 US AQI1.4 times the WHO guideline▼270
=2454AjikiChiba, Japan 39 US AQI1.4 times the WHO guideline▼269
=2454EldaValencia, Spain 39 US AQI1.4 times the WHO guideline
=2454GloucesterEngland, United Kingdom 39 US AQI1.4 times the WHO guideline
=2454EastbourneEngland, United Kingdom 39 US AQI1.4 times the WHO guideline
=2454BristolEngland, United Kingdom 39 US AQI1.4 times the WHO guideline
=2454LiègeWallonia, Belgium 39 US AQI1.4 times the WHO guideline▼301
=2454Kiellast full day 10 OctSchleswig-Holstein, Germany 39 US AQI1.4 times the WHO guideline▼399
=2454FürthHesse, Germany 39 US AQI1.4 times the WHO guideline▼298
=2454Saint-ChamondAuvergne-Rhône-Alpes, France 39 US AQI1.4 times the WHO guideline
=2454QuimperBrittany, France 39 US AQI1.4 times the WHO guideline▼268
=2454PérigueuxNew Aquitaine, France 39 US AQI1.4 times the WHO guideline▼267
=2454PanazolNew Aquitaine, France 39 US AQI1.4 times the WHO guideline
=2454MoulinsAuvergne-Rhône-Alpes, France 39 US AQI1.4 times the WHO guideline▼266
=2454LimogesNew Aquitaine, France 39 US AQI1.4 times the WHO guideline▼296
=2454AuxerreBourgogne-Franche-Comté, France 39 US AQI1.4 times the WHO guideline▼295
=2454Pompano BeachFlorida, United States 39 US AQI1.4 times the WHO guideline▼265
=2454Lexington-FayetteKentucky, United States 39 US AQI1.4 times the WHO guideline▼264
=2454EdgewoodMaryland, United States 39 US AQI1.4 times the WHO guideline▼263
=2454Smithvillelast full day 9 OctNew Jersey, United States 39 US AQI1.4 times the WHO guideline▼262
=2454South VinelandNew Jersey, United States 39 US AQI1.4 times the WHO guideline▼261
=2454LoudonTennessee, United States 39 US AQI1.4 times the WHO guideline▼260
=2454BloomingtonIllinois, United States 39 US AQI1.4 times the WHO guideline▼259
=2454SavoyIllinois, United States 39 US AQI1.4 times the WHO guideline▼258
=2454Apple ValleyMinnesota, United States 39 US AQI1.4 times the WHO guideline▼257
=2454Saint CloudMinnesota, United States 39 US AQI1.4 times the WHO guideline▼256
=2454Saint MichaelMinnesota, United States 39 US AQI1.4 times the WHO guideline▼282
=2454BrookingsSouth Dakota, United States 39 US AQI1.4 times the WHO guideline▼255
=2454BerkeleyCalifornia, United States 39 US AQI1.4 times the WHO guideline▼254
=2454King CityCalifornia, United States 39 US AQI1.4 times the WHO guideline▼253
=2454SalinasCalifornia, United States 39 US AQI1.4 times the WHO guideline▼252
=2454Drayton ValleyAlberta, Canada 39 US AQI1.4 times the WHO guideline▼248
=2454ShawiniganQuebec, Canada 39 US AQI1.4 times the WHO guideline▼246
=2454IzunokuniShizuoka, Japan 39 US AQI1.4 times the WHO guideline▼212
=2454MotonaChiba, Japan 39 US AQI1.4 times the WHO guideline▼245
=2493HengchunTaiwan, Taiwan 39 US AQI1.4 times the WHO guideline▼282
=2493ImaichiTochigi, Japan 39 US AQI1.4 times the WHO guideline▼281
=2493AnamizuIshikawa, Japan 39 US AQI1.4 times the WHO guideline▼280
=2493YokoshibaChiba, Japan 39 US AQI1.4 times the WHO guideline▼279
=2493WakuyaMiyagi, Japan 39 US AQI1.4 times the WHO guideline▼278
=2493KōzakiChiba, Japan 39 US AQI1.4 times the WHO guideline▼277
=2493IchinomiyaChiba, Japan 39 US AQI1.4 times the WHO guideline▼276
=2493HakodateHokkaido, Japan 39 US AQI1.4 times the WHO guideline▼275

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).