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.

=1486ManchesterEngland, United Kingdom 34 US AQI0.4 times the WHO guideline▲663
=1486ZwanenburgNorth Holland, The Netherlands 34 US AQI0.4 times the WHO guideline▲230
=1486Hainburg an der DonauLower Austria, Austria 34 US AQI0.4 times the WHO guideline▲328
=1486WedelSchleswig-Holstein, Germany 34 US AQI0.4 times the WHO guideline▼589
=1486PortlaoiseLeinster, Ireland 34 US AQI0.4 times the WHO guideline▲1017
=1486Le HavreNormandy, France 34 US AQI0.4 times the WHO guideline▲365
=1486GrenobleAuvergne-Rhône-Alpes, France 34 US AQI0.4 times the WHO guideline▲77
=1486SaldanhaWestern Cape, South Africa 34 US AQI0.4 times the WHO guideline▲338
=1486NewarkDelaware, United States 34 US AQI0.4 times the WHO guideline▲1022
=1486GainesvilleFlorida, United States 34 US AQI0.4 times the WHO guideline▼353
=1486JerseyvilleIllinois, United States 34 US AQI0.4 times the WHO guideline▼351
=1486New LondonConnecticut, United States 34 US AQI0.4 times the WHO guideline▲1120
=1486Lake ElsinoreCalifornia, United States 34 US AQI0.4 times the WHO guideline▲342
=1486OaklandCalifornia, United States 34 US AQI0.4 times the WHO guideline▼406
=1486OceansideCalifornia, United States 34 US AQI0.4 times the WHO guideline▼86
=1486MadrasOregon, United States 34 US AQI0.4 times the WHO guideline▼32
=1486ParklandWashington, United States 34 US AQI0.4 times the WHO guideline▼524
=1486KuriharaMiyagi, Japan 34 US AQI0.4 times the WHO guideline▼367
=1486Picnic Point-North LynnwoodWashington, United States 34 US AQI0.4 times the WHO guideline▲226
not rankedAlphen aan den RijnSouth Holland, The Netherlands 34 US AQI0.4 times the WHO guideline
not rankedSan LorenzoValle Department, Honduras 34 US AQI0.4 times the WHO guideline
not rankedSaginawTexas, United States 34 US AQI0.4 times the WHO guideline
not rankedNoviMichigan, United States 34 US AQI0.4 times the WHO guideline
=1506SevlievoGabrovo, Bulgaria 33 US AQI0.4 times the WHO guideline▲500
=1506PortsmouthEngland, United Kingdom 33 US AQI0.4 times the WHO guideline▲965
=1506HayesEngland, United Kingdom 33 US AQI0.4 times the WHO guideline▲992
=1506GlasgowScotland, United Kingdom 33 US AQI0.4 times the WHO guideline▲707
=1506ZaanstadNorth Holland, The Netherlands 33 US AQI0.4 times the WHO guideline▼81
=1506Biberach an der RißBaden-Wurttemberg, Germany 33 US AQI0.4 times the WHO guideline▲369
=1506RoscommonConnacht, Ireland 33 US AQI0.4 times the WHO guideline▲1052
=1506PanazolNew Aquitaine, France 33 US AQI0.4 times the WHO guideline▼117
=1506DoleBourgogne-Franche-Comté, France 33 US AQI0.4 times the WHO guideline▼116
=1506RokycanyPlzeň Region, Czechia 33 US AQI0.4 times the WHO guideline▼207
=1506Borgo ValsuganaTrentino-Alto Adige, Italy 33 US AQI0.4 times the WHO guideline▲8
=1506JundiaíSão Paulo, Brazil 33 US AQI0.4 times the WHO guideline▼912
=1506GlasgowDelaware, United States 33 US AQI0.4 times the WHO guideline▲949
=1506Fort LauderdaleFlorida, United States 33 US AQI0.4 times the WHO guideline▲11
=1506Winter ParkFlorida, United States 33 US AQI0.4 times the WHO guideline▼285
=1506Kansas CityKansas, United States 33 US AQI0.4 times the WHO guideline▼87
=1506Kansas CityMissouri, United States 33 US AQI0.4 times the WHO guideline▲424
=1506St. LouisMissouri, United States 33 US AQI0.4 times the WHO guideline▼206
=1506SpringfieldMissouri, United States 33 US AQI0.4 times the WHO guideline▲12
=1506EdmondOklahoma, United States 33 US AQI0.4 times the WHO guideline▲170
=1506DyersburgTennessee, United States 33 US AQI0.4 times the WHO guideline▼108
=1506GalvestonTexas, United States 33 US AQI0.4 times the WHO guideline▼143
=1506ProvidenceRhode Island, United States 33 US AQI0.4 times the WHO guideline▲871
=1506SalinasCalifornia, United States 33 US AQI0.4 times the WHO guideline▼55
=1506AlbanyOregon, United States 33 US AQI0.4 times the WHO guideline▲587
=1506AbbotsfordBritish Columbia, Canada 33 US AQI0.4 times the WHO guideline▲497
=1506Campbell RiverBritish Columbia, Canada 33 US AQI0.4 times the WHO guideline▲434
=1506TomeMiyagi, Japan 33 US AQI0.4 times the WHO guideline▼346
not rankedGermasógeiaLimassol, Cyprus 33 US AQI0.4 times the WHO guideline
not rankedShcherbinkaMoscow, Russia 33 US AQI0.4 times the WHO guideline
not rankedBilychiKyiv City, Ukraine 33 US AQI0.4 times the WHO guideline
not rankedŁomżaPodlasie, Poland 33 US AQI0.4 times the WHO guideline
not rankedNasugbuCalabarzon, Philippines 33 US AQI0.4 times the WHO guideline
not rankedRufisqueDakar, Senegal 33 US AQI0.4 times the WHO guideline
not rankedEulessTexas, United States 33 US AQI0.4 times the WHO guideline
not rankedWaukeeIowa, United States 33 US AQI0.4 times the WHO guideline
not rankedGoldenColorado, United States 33 US AQI0.4 times the WHO guideline
not rankedWest Lake SammamishWashington, United States 33 US AQI0.4 times the WHO guideline
=1534KrasnogorskMoscow Oblast, Russia 33 US AQI0.4 times the WHO guideline▼566
=1534SingletonNew South Wales, Australia 33 US AQI0.4 times the WHO guideline▼385
=1534PrestonEngland, United Kingdom 33 US AQI0.4 times the WHO guideline▲776
=1534GloucesterEngland, United Kingdom 33 US AQI0.4 times the WHO guideline▲1000
=1534FarnboroughEngland, United Kingdom 33 US AQI0.4 times the WHO guideline▲1064
=1534CheltenhamEngland, United Kingdom 33 US AQI0.4 times the WHO guideline▲1149
=1534UtrechtUtrecht, The Netherlands 33 US AQI0.4 times the WHO guideline▼147
=1534DelfzijlGroningen, The Netherlands 33 US AQI0.4 times the WHO guideline
=1534AmsterdamNorth Holland, The Netherlands 33 US AQI0.4 times the WHO guideline▲156
=1534Villingen-SchwenningenBaden-Wurttemberg, Germany 33 US AQI0.4 times the WHO guideline▲763
=1534Groß-GerauHesse, Germany 33 US AQI0.4 times the WHO guideline
=1534Bad DriburgNorth Rhine-Westphalia, Germany 33 US AQI0.4 times the WHO guideline▲622
=1534AalenBaden-Wurttemberg, Germany 33 US AQI0.4 times the WHO guideline▲284
=1534VannesBrittany, France 33 US AQI0.4 times the WHO guideline▲945
=1534Saint-ÉtienneAuvergne-Rhône-Alpes, France 33 US AQI0.4 times the WHO guideline▼47
=1534LavalPays de la Loire, France 33 US AQI0.4 times the WHO guideline▲258
=1534DunkirkHauts-de-France, France 33 US AQI0.4 times the WHO guideline▲287
=1534DongesPays de la Loire, France 33 US AQI0.4 times the WHO guideline▲920
=1534Aix-en-ProvenceProvence-Alpes-Côte d'Azur, France 33 US AQI0.4 times the WHO guideline▼43
=1534Žiar nad HronomBanská Bystrica Region, Slovakia 33 US AQI0.4 times the WHO guideline▲423
=1534HnúšťaBanská Bystrica Region, Slovakia 33 US AQI0.4 times the WHO guideline▲289
=1534BratislavaBratislava Region, Slovakia 33 US AQI0.4 times the WHO guideline▲319
=1534SzczecinWest Pomerania, Poland 33 US AQI0.4 times the WHO guideline▲233
=1534BiellaPiedmont, Italy 33 US AQI0.4 times the WHO guideline▼249
=1534Attnang-PuchheimUpper Austria, Austria 33 US AQI0.4 times the WHO guideline▲56
=1534Les AbymesGuadeloupe, Guadeloupe 33 US AQI0.4 times the WHO guideline▲112
=1534Fruit CoveFlorida, United States 33 US AQI0.4 times the WHO guideline
=1534Lake MaryFlorida, United States 33 US AQI0.4 times the WHO guideline▼265
=1534TopekaKansas, United States 33 US AQI0.4 times the WHO guideline▲657
=1534FraminghamMassachusetts, United States 33 US AQI0.4 times the WHO guideline▲1009
=1534SpringfieldMassachusetts, United States 33 US AQI0.4 times the WHO guideline▲870
=1534WorcesterMassachusetts, United States 33 US AQI0.4 times the WHO guideline▲1092
=1534MendhamNew Jersey, United States 33 US AQI0.4 times the WHO guideline▲871
=1534FontanaCalifornia, United States 33 US AQI0.4 times the WHO guideline▲432
=1534San FranciscoCalifornia, United States 33 US AQI0.4 times the WHO guideline▼623
=1534South San FranciscoCalifornia, United States 33 US AQI0.4 times the WHO guideline▼82
=1534Baker CityOregon, United States 33 US AQI0.4 times the WHO guideline▲93
not rankedSterlitamakBashkortostan Republic, Russia 33 US AQI0.4 times the WHO guideline
not rankedZąbkiMazovia, Poland 33 US AQI0.4 times the WHO guideline

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.

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 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).