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.

=1171Peschiera del GardaVeneto, Italy 42 US AQI0.5 times the WHO guideline
=1171BartowFlorida, United States 42 US AQI0.5 times the WHO guideline▼233
=1171Fort MyersFlorida, United States 42 US AQI0.5 times the WHO guideline▼286
=1171ColumbusIndiana, United States 42 US AQI0.5 times the WHO guideline▲395
=1171DentsvilleSouth Carolina, United States 42 US AQI0.5 times the WHO guideline▲878
=1171DallasTexas, United States 42 US AQI0.5 times the WHO guideline▲172
=1171Ann ArborMichigan, United States 42 US AQI0.5 times the WHO guideline▼540
=1171Jersey CityNew Jersey, United States 42 US AQI0.5 times the WHO guideline▲1205
=1171King CityCalifornia, United States 42 US AQI0.5 times the WHO guideline▲54
=1171KaiapoiCanterbury, New Zealand 42 US AQI0.5 times the WHO guideline▲287
not rankedZelenogradMoscow, Russia 42 US AQI0.5 times the WHO guideline
not rankedSlavyansk-na-KubaniKrasnodar Krai, Russia 42 US AQI0.5 times the WHO guideline
not rankedCoswigSaxony, Germany 42 US AQI0.5 times the WHO guideline
not rankedSesveteZagreb, Croatia 42 US AQI0.5 times the WHO guideline
not rankedNew RochelleNew York, United States 42 US AQI0.5 times the WHO guideline
=1188TaguigNational Capital Region, Philippines 42 US AQI0.5 times the WHO guideline
=1188UwajimaEhime, Japan 42 US AQI0.5 times the WHO guideline▼343
=1188CairnsQueensland, Australia 42 US AQI0.5 times the WHO guideline▼60
=1188LimerickMunster, Ireland 42 US AQI0.5 times the WHO guideline▲1239
=1188GardanneProvence-Alpes-Côte d'Azur, France 42 US AQI0.5 times the WHO guideline▼35
=1188DunaújvárosFejér, Hungary 42 US AQI0.5 times the WHO guideline▲95
=1188PrievidzaTrenčín Region, Slovakia 42 US AQI0.5 times the WHO guideline▼95
=1188OsowaPomerania, Poland 42 US AQI0.5 times the WHO guideline▲1165
=1188Imperial BeachCalifornia, United States 42 US AQI0.5 times the WHO guideline▲283
=1188UkiahCalifornia, United States 42 US AQI0.5 times the WHO guideline▼401
=1188FujiyoshidaYamanashi, Japan 42 US AQI0.5 times the WHO guideline▼577
not rankedUst’-LabinskKrasnodar Krai, Russia 42 US AQI0.5 times the WHO guideline
not rankedItauguáCentral Department, Paraguay 42 US AQI0.5 times the WHO guideline
not rankedCarpentersvilleIllinois, United States 42 US AQI0.5 times the WHO guideline
not rankedRemseck am NeckarBaden-Wurttemberg, Germany 42 US AQI0.5 times the WHO guideline
=1199KesennumaMiyagi, Japan 41 US AQI0.5 times the WHO guideline▼146
=1199CwmafanWales, United Kingdom 41 US AQI0.5 times the WHO guideline▲980
=1199BarnstapleEngland, United Kingdom 41 US AQI0.5 times the WHO guideline▲1300
=1199BirrLeinster, Ireland 41 US AQI0.5 times the WHO guideline▲1043
=1199Sainte-Geneviève-des-BoisÎle-de-France, France 41 US AQI0.5 times the WHO guideline▼456
=1199ContesProvence-Alpes-Côte d'Azur, France 41 US AQI0.5 times the WHO guideline▲290
=1199Boulogne-sur-MerHauts-de-France, France 41 US AQI0.5 times the WHO guideline
=1199ÉrdPest County, Hungary 41 US AQI0.5 times the WHO guideline
=1199OleśnicaLower Silesia, Poland 41 US AQI0.5 times the WHO guideline
=1199CayenneGuyane, French Guiana 41 US AQI0.5 times the WHO guideline▲729
=1199Ferraz de VasconcelosSão Paulo, Brazil 41 US AQI0.5 times the WHO guideline▼87
=1199East LakeFlorida, United States 41 US AQI0.5 times the WHO guideline▲69
=1199SavannahGeorgia, United States 41 US AQI0.5 times the WHO guideline▲347
=1199OwensboroKentucky, United States 41 US AQI0.5 times the WHO guideline▼170
=1199WavelandMississippi, United States 41 US AQI0.5 times the WHO guideline▼84
=1199GreensboroNorth Carolina, United States 41 US AQI0.5 times the WHO guideline▲760
=1199TulsaOklahoma, United States 41 US AQI0.5 times the WHO guideline▲55
=1199UniontownPennsylvania, United States 41 US AQI0.5 times the WHO guideline▲1081
=1199KingsportTennessee, United States 41 US AQI0.5 times the WHO guideline
=1199EriePennsylvania, United States 41 US AQI0.5 times the WHO guideline▲764
=1199GreensburgPennsylvania, United States 41 US AQI0.5 times the WHO guideline▲997
=1199Prince GeorgeBritish Columbia, Canada 41 US AQI0.5 times the WHO guideline▼559
not rankedWadgassenSaarland, Germany 41 US AQI0.5 times the WHO guideline
not rankedStrzegomLower Silesia, Poland 41 US AQI0.5 times the WHO guideline
not rankedWest AllisWisconsin, United States 41 US AQI0.5 times the WHO guideline
=1221OgawamachiSaitama, Japan 41 US AQI0.5 times the WHO guideline▼173
=1221KasamaIbaraki, Japan 41 US AQI0.5 times the WHO guideline▼592
=1221IchinosekiIwate, Japan 41 US AQI0.5 times the WHO guideline▼666
=1221Toongabbie WestNew South Wales, Australia 41 US AQI0.5 times the WHO guideline▼131
=1221InnsbruckTyrol, Austria 41 US AQI0.5 times the WHO guideline▲470
=1221Bad NauheimHesse, Germany 41 US AQI0.5 times the WHO guideline
=1221CeljeUrban Municipality of Celje, Slovenia 41 US AQI0.5 times the WHO guideline▲476
=1221SorocabaSão Paulo, Brazil 41 US AQI0.5 times the WHO guideline▼229
=1221Sarasota SpringsFlorida, United States 41 US AQI0.5 times the WHO guideline▼162
=1221Upper AltonIllinois, United States 41 US AQI0.5 times the WHO guideline▼392
=1221PikevilleKentucky, United States 41 US AQI0.5 times the WHO guideline▲326
=1221BostonMassachusetts, United States 41 US AQI0.5 times the WHO guideline▲1214
=1221HermitagePennsylvania, United States 41 US AQI0.5 times the WHO guideline▲893
=1221Jefferson HillsPennsylvania, United States 41 US AQI0.5 times the WHO guideline▲943
=1221BellinghamWashington, United States 41 US AQI0.5 times the WHO guideline▲646
=1221DuncanBritish Columbia, Canada 41 US AQI0.5 times the WHO guideline▲106
=1221Fort St. JohnBritish Columbia, Canada 41 US AQI0.5 times the WHO guideline▲1247
=1221ŌsakiMiyagi, Japan 41 US AQI0.5 times the WHO guideline▼471
not rankedBallitovilleKwaZulu-Natal, South Africa 41 US AQI0.5 times the WHO guideline
not rankedTatabányaKomárom-Esztergom, Hungary 41 US AQI0.5 times the WHO guideline
not rankedConcordMissouri, United States 41 US AQI0.5 times the WHO guideline
=1239AcharnésAttica, Greece 40 US AQI0.5 times the WHO guideline
=1239MaizuruKyoto, Japan 40 US AQI0.5 times the WHO guideline▲290
=1239Mount IsaQueensland, Australia 40 US AQI0.5 times the WHO guideline▼357
=1239YachimataChiba, Japan 40 US AQI0.5 times the WHO guideline▼152
=1239TraralgonVictoria, Australia 40 US AQI0.5 times the WHO guideline▲291
=1239WorthingEngland, United Kingdom 40 US AQI0.5 times the WHO guideline▲861
=1239BelfastNorthern Ireland, United Kingdom 40 US AQI0.5 times the WHO guideline▲890
=1239Klagenfurt am WörtherseeCarinthia, Austria 40 US AQI0.5 times the WHO guideline▲482
=1239EisenstadtBurgenland, Austria 40 US AQI0.5 times the WHO guideline▲547
=1239EnniscorthyLeinster, Ireland 40 US AQI0.5 times the WHO guideline▲1002
=1239CannesProvence-Alpes-Côte d'Azur, France 40 US AQI0.5 times the WHO guideline▲430
=1239SenecBratislava Region, Slovakia 40 US AQI0.5 times the WHO guideline▲807
=1239Murska SobotaUrban Municipality of Murska Sobota, Slovenia 40 US AQI0.5 times the WHO guideline▲534
=1239ClaymontDelaware, United States 40 US AQI0.5 times the WHO guideline▲1268
=1239WilmingtonDelaware, United States 40 US AQI0.5 times the WHO guideline▲1246
=1239HazardKentucky, United States 40 US AQI0.5 times the WHO guideline▲191
=1239AltoonaPennsylvania, United States 40 US AQI0.5 times the WHO guideline▲1011
=1239RiversideCalifornia, United States 40 US AQI0.5 times the WHO guideline▲538
=1239TurlockCalifornia, United States 40 US AQI0.5 times the WHO guideline▼294
=1239PeterboroughOntario, Canada 40 US AQI0.5 times the WHO guideline▲702
not rankedWaregemFlanders, Belgium 40 US AQI0.5 times the WHO guideline
not rankedOlchingBavaria, Germany 40 US AQI0.5 times the WHO guideline
not rankedMosbachBaden-Wurttemberg, Germany 40 US AQI0.5 times the WHO guideline
not rankedKarlovy VaryCarlsbad Region, Czechia 40 US AQI0.5 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).