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.

not rankedHaaksbergenOverijssel, The Netherlands 52 US AQI0.6 times the WHO guideline
not rankedKonstantynów ŁódzkiŁódź Voivodeship, Poland 52 US AQI0.6 times the WHO guideline
not rankedUnionNew Jersey, United States 52 US AQI0.6 times the WHO guideline
not rankedMurrysvillePennsylvania, United States 52 US AQI0.6 times the WHO guideline
=862SmederevoCentral Serbia, Serbia 52 US AQI0.6 times the WHO guideline▼664
=862HirakataOsaka, Japan 52 US AQI0.6 times the WHO guideline▲521
=862HashimotoWakayama, Japan 52 US AQI0.6 times the WHO guideline▼147
=862FujisawaKanagawa, Japan 52 US AQI0.6 times the WHO guideline▲32
=862EnnsUpper Austria, Austria 52 US AQI0.6 times the WHO guideline▲647
=862CoburgBavaria, Germany 52 US AQI0.6 times the WHO guideline
=862BydgoszczKujawsko-Pomorskie, Poland 52 US AQI0.6 times the WHO guideline▲651
=862NicholasvilleKentucky, United States 52 US AQI0.6 times the WHO guideline▲198
=862HickoryNorth Carolina, United States 52 US AQI0.6 times the WHO guideline
=862Park RidgeIllinois, United States 52 US AQI0.6 times the WHO guideline
=862GaryIndiana, United States 52 US AQI0.6 times the WHO guideline▲214
=862New BaltimoreMichigan, United States 52 US AQI0.6 times the WHO guideline▲136
=862Warrensville HeightsOhio, United States 52 US AQI0.6 times the WHO guideline▲762
=862OakvilleOntario, Canada 52 US AQI0.6 times the WHO guideline▲178
not rankedTemseFlanders, Belgium 52 US AQI0.6 times the WHO guideline
not rankedCarrollwoodFlorida, United States 52 US AQI0.6 times the WHO guideline
not rankedQueensNew York, United States 52 US AQI0.6 times the WHO guideline
=876OmskOmsk Oblast, Russia 51 US AQI0.6 times the WHO guideline▲600
=876MachidaTokyo, Japan 51 US AQI0.6 times the WHO guideline▼80
=876Kaseda-shirakameKagoshima, Japan 51 US AQI0.6 times the WHO guideline▲3
=876HadanoKanagawa, Japan 51 US AQI0.6 times the WHO guideline▼148
=876GotembaShizuoka, Japan 51 US AQI0.6 times the WHO guideline▼540
=876SwanseaWales, United Kingdom 51 US AQI0.6 times the WHO guideline▲509
=876CardiffWales, United Kingdom 51 US AQI0.6 times the WHO guideline▲1390
=876IngolstadtBavaria, Germany 51 US AQI0.6 times the WHO guideline▼269
=876LetterkennyUlster, Ireland 51 US AQI0.6 times the WHO guideline▲1439
=876GyőrGyőr-Moson-Sopron, Hungary 51 US AQI0.6 times the WHO guideline▲255
=876KluczborkOpole Voivodeship, Poland 51 US AQI0.6 times the WHO guideline
=876SarajevoFederation of B&H, Bosnia and Herzegovina 51 US AQI0.6 times the WHO guideline▼438
=876BessemerAlabama, United States 51 US AQI0.6 times the WHO guideline▲61
=876JeffersontownKentucky, United States 51 US AQI0.6 times the WHO guideline▲100
=876AshevilleNorth Carolina, United States 51 US AQI0.6 times the WHO guideline▲855
=876AbingtonPennsylvania, United States 51 US AQI0.6 times the WHO guideline▲1455
=876West MifflinPennsylvania, United States 51 US AQI0.6 times the WHO guideline▲925
not rankedRâmnicu VâlceaVâlcea County, Romania 51 US AQI0.6 times the WHO guideline
not rankedInđijaVojvodina, Serbia 51 US AQI0.6 times the WHO guideline
not rankedNeumarkt in der OberpfalzBavaria, Germany 51 US AQI0.6 times the WHO guideline
not rankedAltdorf bei NürnbergBavaria, Germany 51 US AQI0.6 times the WHO guideline
=893KrompachyKošice Region, Slovakia 51 US AQI0.6 times the WHO guideline▲635
=893PrzemyślSubcarpathia, Poland 51 US AQI0.6 times the WHO guideline▲339
=893KumanovoKumanovo, North Macedonia 51 US AQI0.6 times the WHO guideline▲547
=893KikindaVojvodina, Serbia 51 US AQI0.6 times the WHO guideline▼126
=893ShizuokaShizuoka, Japan 51 US AQI0.6 times the WHO guideline
=893OsakaOsaka, Japan 51 US AQI0.6 times the WHO guideline▲254
=893BallinasloeConnacht, Ireland 51 US AQI0.6 times the WHO guideline▲1426
=893ZvolenBanská Bystrica Region, Slovakia 51 US AQI0.6 times the WHO guideline▲297
=893CrescentinoPiedmont, Italy 51 US AQI0.6 times the WHO guideline▼435
=893OcalaFlorida, United States 51 US AQI0.6 times the WHO guideline▼7
=893ChambersburgPennsylvania, United States 51 US AQI0.6 times the WHO guideline▲1409
=893BraidwoodIllinois, United States 51 US AQI0.6 times the WHO guideline▲278
=893Grand RapidsMichigan, United States 51 US AQI0.6 times the WHO guideline▼42
=893TecumsehMichigan, United States 51 US AQI0.6 times the WHO guideline▲8
=893New AlbanyOhio, United States 51 US AQI0.6 times the WHO guideline▲540
=893HersheyPennsylvania, United States 51 US AQI0.6 times the WHO guideline▲1358
=893WaterdownOntario, Canada 51 US AQI0.6 times the WHO guideline▲348
not rankedJózefówMazovia, Poland 51 US AQI0.6 times the WHO guideline
not rankedWischGelderland, The Netherlands 51 US AQI0.6 times the WHO guideline
not rankedDabasPest County, Hungary 51 US AQI0.6 times the WHO guideline
not rankedUniversityFlorida, United States 51 US AQI0.6 times the WHO guideline
=910AkashiHyōgo, Japan 51 US AQI0.6 times the WHO guideline▲291
=910YanagawaFukuoka, Japan 51 US AQI0.6 times the WHO guideline▼391
=910ToyookaHyōgo, Japan 51 US AQI0.6 times the WHO guideline▲471
=910SumotoHyōgo, Japan 51 US AQI0.6 times the WHO guideline▼54
=910KaratsuSaga, Japan 51 US AQI0.6 times the WHO guideline▼406
=910FukuchiyamaKyoto, Japan 51 US AQI0.6 times the WHO guideline▲370
=910FujiShizuoka, Japan 51 US AQI0.6 times the WHO guideline▼497
=910TomakomaiHokkaido, Japan 51 US AQI0.6 times the WHO guideline▼428
=910BrestBrittany, France 51 US AQI0.6 times the WHO guideline▲1134
=910GyálPest County, Hungary 51 US AQI0.6 times the WHO guideline▲115
=910PraguePrague, Czechia 51 US AQI0.6 times the WHO guideline▲200
=910Rio de JaneiroRio de Janeiro, Brazil 51 US AQI0.6 times the WHO guideline▲405
=910Rio ClaroSão Paulo, Brazil 51 US AQI0.6 times the WHO guideline▼501
=910AshlandKentucky, United States 51 US AQI0.6 times the WHO guideline▲511
=910BartlettTennessee, United States 51 US AQI0.6 times the WHO guideline▼237
=910AndersonIndiana, United States 51 US AQI0.6 times the WHO guideline▼10
=910SarniaOntario, Canada 51 US AQI0.6 times the WHO guideline▲54
=910KinokawaWakayama, Japan 51 US AQI0.6 times the WHO guideline▼267
not rankedBadenLower Austria, Austria 51 US AQI0.6 times the WHO guideline
not rankedLeerLower Saxony, Germany 51 US AQI0.6 times the WHO guideline
=928KobeHyōgo, Japan 50 US AQI0.6 times the WHO guideline▲334
=928HimejiHyōgo, Japan 50 US AQI0.6 times the WHO guideline▲176
=928SakamotoMiyagi, Japan 50 US AQI0.6 times the WHO guideline▼130
=928TullnLower Austria, Austria 50 US AQI0.6 times the WHO guideline▲481
=928DillenburgHesse, Germany 50 US AQI0.6 times the WHO guideline
=928CaryIllinois, United States 50 US AQI0.6 times the WHO guideline▲107
=928YoungstownOhio, United States 50 US AQI0.6 times the WHO guideline▲932
=928New BrightonPennsylvania, United States 50 US AQI0.6 times the WHO guideline▲1159
=928San JoseCalifornia, United States 50 US AQI0.6 times the WHO guideline▼112
=928El PasoTexas, United States 50 US AQI0.6 times the WHO guideline▲18
=928ChathamOntario, Canada 50 US AQI0.6 times the WHO guideline▲398
=928KamloopsBritish Columbia, Canada 50 US AQI0.6 times the WHO guideline▲903
=928WindsorOntario, Canada 50 US AQI0.6 times the WHO guideline▲190
not rankedGrodzisk MazowieckiMazovia, Poland 50 US AQI0.6 times the WHO guideline
not rankedNeunkirchenSaarland, Germany 50 US AQI0.6 times the WHO guideline
not rankedUstrońSilesia, Poland 50 US AQI0.6 times the WHO guideline
not rankedSouthgateMichigan, United States 50 US AQI0.6 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).