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.

=2493TamworthNew South Wales, Australia 39 US AQI1.4 times the WHO guideline▼274
=2493TorreviejaValencia, Spain 39 US AQI1.4 times the WHO guideline
=2493Stoke-on-TrentEngland, United Kingdom 39 US AQI1.4 times the WHO guideline
=2493PortsmouthEngland, United Kingdom 39 US AQI1.4 times the WHO guideline
=2493PeterboroughEngland, United Kingdom 39 US AQI1.4 times the WHO guideline
=2493MiddlewichEngland, United Kingdom 39 US AQI1.4 times the WHO guideline
=2493MansfieldEngland, United Kingdom 39 US AQI1.4 times the WHO guideline
=2493HalesworthEngland, United Kingdom 39 US AQI1.4 times the WHO guideline
=2493BorehamwoodEngland, United Kingdom 39 US AQI1.4 times the WHO guideline
=2493ZierenbergHesse, Germany 39 US AQI1.4 times the WHO guideline▼339
=2493Oberviechtachlast full day 10 OctBavaria, Germany 39 US AQI1.4 times the WHO guideline▼272
=2493ChambéryAuvergne-Rhône-Alpes, France 39 US AQI1.4 times the WHO guideline▼212
=2493ZarautzBasque Country, Spain 39 US AQI1.4 times the WHO guideline
=2493SamaAsturias, Spain 39 US AQI1.4 times the WHO guideline
=2493Biograd na MoruZadar, Croatia 39 US AQI1.4 times the WHO guideline
=2493Fruit CoveFlorida, United States 39 US AQI1.4 times the WHO guideline▼268
=2493Oak RidgeFlorida, United States 39 US AQI1.4 times the WHO guideline▼267
=2493Valricolast full day 11 OctFlorida, United States 39 US AQI1.4 times the WHO guideline▼266
=2493Atlantic CityNew Jersey, United States 39 US AQI1.4 times the WHO guideline▼265
=2493DyersburgTennessee, United States 39 US AQI1.4 times the WHO guideline▼264
=2493New HavenConnecticut, United States 39 US AQI1.4 times the WHO guideline▼263
=2493West FargoNorth Dakota, United States 39 US AQI1.4 times the WHO guideline▼262
=2493LincolnNebraska, United States 39 US AQI1.4 times the WHO guideline▼261
=2493DavisCalifornia, United States 39 US AQI1.4 times the WHO guideline▼259
=2493SacramentoCalifornia, United States 39 US AQI1.4 times the WHO guideline▼222
=2493VallejoCalifornia, United States 39 US AQI1.4 times the WHO guideline▼258
=2493HobbsNew Mexico, United States 39 US AQI1.4 times the WHO guideline▼257
=2493Bozemanlast full day 10 OctMontana, United States 39 US AQI1.4 times the WHO guideline▼256
=2493MedfordOregon, United States 39 US AQI1.4 times the WHO guideline▼290
=2493AllistonOntario, Canada 39 US AQI1.4 times the WHO guideline▼255
=2493LethbridgeAlberta, Canada 39 US AQI1.4 times the WHO guideline▼254
=2493Prince AlbertSaskatchewan, Canada 39 US AQI1.4 times the WHO guideline▼253
=2493NasukarasuyamaTochigi, Japan 39 US AQI1.4 times the WHO guideline▼252
=2493KaizuGifu, Japan 39 US AQI1.4 times the WHO guideline▼250
=2493Tri-CitiesWashington, United States 39 US AQI1.4 times the WHO guideline▼249
=2493KisoNagano, Japan 39 US AQI1.4 times the WHO guideline▼248
=2537OwaseMie, Japan 38 US AQI1.4 times the WHO guideline▼291
=2537OgawamachiSaitama, Japan 38 US AQI1.4 times the WHO guideline▼290
=2537MakiNiigata, Japan 38 US AQI1.4 times the WHO guideline▼289
=2537KitaibarakiIbaraki, Japan 38 US AQI1.4 times the WHO guideline▼288
=2537KawasakiMiyagi, Japan 38 US AQI1.4 times the WHO guideline▼287
=2537CártamaAndalusia, Spain 38 US AQI1.4 times the WHO guideline
=2537LiverpoolEngland, United Kingdom 38 US AQI1.4 times the WHO guideline
=2537BelfastNorthern Ireland, United Kingdom 38 US AQI1.4 times the WHO guideline
=2537Lüdenscheidlast full day 10 OctNorth Rhine-Westphalia, Germany 38 US AQI1.4 times the WHO guideline▼382
=2537Saint-ÉtienneAuvergne-Rhône-Alpes, France 38 US AQI1.4 times the WHO guideline▼284
=2537Saint-DizierGrand Est, France 38 US AQI1.4 times the WHO guideline▼315
=2537NeversBourgogne-Franche-Comté, France 38 US AQI1.4 times the WHO guideline▼258
=2537Montoir-de-BretagnePays de la Loire, France 38 US AQI1.4 times the WHO guideline
=2537La RochelleNew Aquitaine, France 38 US AQI1.4 times the WHO guideline
=2537Joué-lès-ToursCentre-Val de Loire, France 38 US AQI1.4 times the WHO guideline▼314
=2537ÉpernayGrand Est, France 38 US AQI1.4 times the WHO guideline
=2537DijonBourgogne-Franche-Comté, France 38 US AQI1.4 times the WHO guideline
=2537BourgesCentre-Val de Loire, France 38 US AQI1.4 times the WHO guideline▼283
=2537AlençonNormandy, France 38 US AQI1.4 times the WHO guideline▼313
=2537ElverumInnlandet, Norway 38 US AQI1.4 times the WHO guideline
=2537BergenVestland, Norway 38 US AQI1.4 times the WHO guideline
=2537Rio de JaneiroRio de Janeiro, Brazil 38 US AQI1.4 times the WHO guideline▼281
=2537Palm CityFlorida, United States 38 US AQI1.4 times the WHO guideline▼280
=2537St. PetersburgFlorida, United States 38 US AQI1.4 times the WHO guideline▼279
=2537NicholasvilleKentucky, United States 38 US AQI1.4 times the WHO guideline▼278
=2537Kansas CityMissouri, United States 38 US AQI1.4 times the WHO guideline▼277
=2537DurhamNorth Carolina, United States 38 US AQI1.4 times the WHO guideline▼276
=2537RoanokeVirginia, United States 38 US AQI1.4 times the WHO guideline▼275
=2537SalemVirginia, United States 38 US AQI1.4 times the WHO guideline▼274
=2537New BrunswickNew Jersey, United States 38 US AQI1.4 times the WHO guideline▼272
=2537CarpinteriaCalifornia, United States 38 US AQI1.4 times the WHO guideline▼270
=2537GuadalupeCalifornia, United States 38 US AQI1.4 times the WHO guideline▼269
=2537OceanoCalifornia, United States 38 US AQI1.4 times the WHO guideline▼268
=2537RosevilleCalifornia, United States 38 US AQI1.4 times the WHO guideline▼267
=2537White CenterWashington, United States 38 US AQI1.4 times the WHO guideline▼265
=2537Sherwood ParkAlberta, Canada 38 US AQI1.4 times the WHO guideline▼264
=2537ChikumaNagano, Japan 38 US AQI1.4 times the WHO guideline▼263
=2537MinamiashigaraKanagawa, Japan 38 US AQI1.4 times the WHO guideline▼262
=2575Niitsu-honchōNiigata, Japan 38 US AQI1.4 times the WHO guideline▼299
=2575ŌamiChiba, Japan 38 US AQI1.4 times the WHO guideline▼298
=2575ImminghamEngland, United Kingdom 38 US AQI1.4 times the WHO guideline
=2575DerbyEngland, United Kingdom 38 US AQI1.4 times the WHO guideline
=2575HeerlenLimburg, The Netherlands 38 US AQI1.4 times the WHO guideline▼266
=2575MonsWallonia, Belgium 38 US AQI1.4 times the WHO guideline▼355
=2575NavanLeinster, Ireland 38 US AQI1.4 times the WHO guideline
=2575LongfordLeinster, Ireland 38 US AQI1.4 times the WHO guideline▼324
=2575RoussillonAuvergne-Rhône-Alpes, France 38 US AQI1.4 times the WHO guideline
=2575LourdesOccitanie, France 38 US AQI1.4 times the WHO guideline▼295
=2575ChâteaurouxCentre-Val de Loire, France 38 US AQI1.4 times the WHO guideline▼259
=2575FairhopeAlabama, United States 38 US AQI1.4 times the WHO guideline▼291
=2575Warringtonlast full day 6 OctFlorida, United States 38 US AQI1.4 times the WHO guideline▼290
=2575SpringfieldMassachusetts, United States 38 US AQI1.4 times the WHO guideline▼311
=2575Bayonnelast full day 11 OctNew Jersey, United States 38 US AQI1.4 times the WHO guideline▼289
=2575Rochesterlast full day 11 OctNew York, United States 38 US AQI1.4 times the WHO guideline▼288
=2575RutlandVermont, United States 38 US AQI1.4 times the WHO guideline▼287
=2575Casa GrandeArizona, United States 38 US AQI1.4 times the WHO guideline▼342
=2575PaysonArizona, United States 38 US AQI1.4 times the WHO guideline▼286
=2575YumaArizona, United States 38 US AQI1.4 times the WHO guideline▼309
=2575LivermoreCalifornia, United States 38 US AQI1.4 times the WHO guideline▼284
=2575MoabUtah, United States 38 US AQI1.4 times the WHO guideline▼283
=2575OremUtah, United States 38 US AQI1.4 times the WHO guideline▼281
=2575AgassizBritish Columbia, Canada 38 US AQI1.4 times the WHO guideline▼280
=2575Fort McMurrayAlberta, Canada 38 US AQI1.4 times the WHO guideline▼278
=2575Medicine HatAlberta, Canada 38 US AQI1.4 times the WHO guideline▼277

What stands behind each figure: Checked at 2+ sites One reference monitor Low-cost sensors About these marks

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.

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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 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).