All 2,894 cities by PM2.5, last 7 days

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.

Hide the 297 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.

=2138Red DeerAlberta, Canada 28 US AQI▲23
=2138Four CornersFlorida, United States 28 US AQI▲310
not rankedLehLadakh, India 28 US AQI
not rankedBataviaIllinois, United States 28 US AQI
not rankedMadisonNew Jersey, United States 28 US AQI
not rankedCutler BayFlorida, United States 28 US AQI
=2169KlaipėdaKlaipėda County, Lithuania 27 US AQI▼190
=2169BadhoevedorpNorth Holland, The Netherlands 27 US AQI▼185
=2169LiègeWallonia, Belgium 27 US AQI▼227
=2169WiesbadenHesse, Germany 27 US AQI▲147
=2169StuttgartBaden-Wurttemberg, Germany 27 US AQI▼35
=2169Marburg an der LahnHesse, Germany 27 US AQI▲40
=2169Hanau am MainHesse, Germany 27 US AQI▲82
=2169PanazolNew Aquitaine, France 27 US AQI▲154
=2169NantesPays de la Loire, France 27 US AQI▼106
=2169MontpellierOccitanie, France 27 US AQI▼218
=2169LormontNew Aquitaine, France 27 US AQI▲4
=2169GrenobleAuvergne-Rhône-Alpes, France 27 US AQI▼142
=2169FréjusProvence-Alpes-Côte d'Azur, France 27 US AQI▲395
=2169Bourg-en-BresseAuvergne-Rhône-Alpes, France 27 US AQI▲7
=2169AmiensHauts-de-France, France 27 US AQI▼141
=2169MerateLombardy, Italy 27 US AQI▼216
=2169DavieFlorida, United States 27 US AQI▲165
=2169Oak RidgeFlorida, United States 27 US AQI▲267
=2169Cleveland HeightsOhio, United States 27 US AQI▲398
=2169New HavenConnecticut, United States 27 US AQI▲269
=2169BrocktonMassachusetts, United States 27 US AQI▲366
=2169VirginiaMinnesota, United States 27 US AQI▼57
=2169WyomissingPennsylvania, United States 27 US AQI▲370
=2169TruckeeCalifornia, United States 27 US AQI▲174
=2169LubbockTexas, United States 27 US AQI▲133
=2169Coeur d'AleneIdaho, United States 27 US AQI▼89
=2169PrestonIdaho, United States 27 US AQI▼126
=2169HermistonOregon, United States 27 US AQI▼87
=2169LaceyWashington, United States 27 US AQI▲68
=2169ProsserWashington, United States 27 US AQI▼84
=2169PullmanWashington, United States 27 US AQI▼157
=2169Hilolast full day 11 OctHawaii, United States 27 US AQI▲211
=2169AirdrieAlberta, Canada 27 US AQI▼196
=2169BarrieOntario, Canada 27 US AQI▲459
=2169LangfordBritish Columbia, Canada 27 US AQI▲249
not rankedAllschwilBasel-Landschaft, Switzerland 27 US AQI
not rankedApexNorth Carolina, United States 27 US AQI
not rankedNew RochelleNew York, United States 27 US AQI
not rankedWoosterOhio, United States 27 US AQI
not rankedOlympiaWashington, United States 27 US AQI
=2204RigaRiga, Latvia 27 US AQI▲179
=2204AmoraSetúbal, Portugal 27 US AQI▲247
=2204ManchesterEngland, United Kingdom 27 US AQI▲79
=2204BournemouthEngland, United Kingdom 27 US AQI▼37
=2204KreuzlingenThurgau, Switzerland 27 US AQI▲81
=2204GenemuidenOverijssel, The Netherlands 27 US AQI▼299
=2204FreistadtUpper Austria, Austria 27 US AQI▼74
=2204PforzheimBaden-Wurttemberg, Germany 27 US AQI▼69
=2204MichelstadtHesse, Germany 27 US AQI▲44
=2204SligoConnacht, Ireland 27 US AQI▼32
=2204BirrLeinster, Ireland 27 US AQI▲12
=2204São SebastiãoSão Paulo, Brazil 27 US AQI▲17
=2204ClaymontDelaware, United States 27 US AQI▲297
=2204East LakeFlorida, United States 27 US AQI▲299
=2204EdgewoodMaryland, United States 27 US AQI▲197
=2204SpringfieldVirginia, United States 27 US AQI▲301
=2204DanburyConnecticut, United States 27 US AQI▲199
=2204Ann ArborMichigan, United States 27 US AQI▼94
=2204MendhamNew Jersey, United States 27 US AQI▲201
=2204New York Citylast full day 11 OctNew York, United States 27 US AQI▲202
=2204AllentownPennsylvania, United States 27 US AQI▲365
=2204CanonsburgPennsylvania, United States 27 US AQI▲333
=2204JohnstownPennsylvania, United States 27 US AQI▲366
=2204SchlusserPennsylvania, United States 27 US AQI▲334
=2204MesaArizona, United States 27 US AQI▲97
=2204SunnyvaleCalifornia, United States 27 US AQI▼9
=2204Las VegasNevada, United States 27 US AQI▼86
=2204ButteMontana, United States 27 US AQI▼235
=2204BellinghamWashington, United States 27 US AQI▲102
=2204MississaugaOntario, Canada 27 US AQI▲375
=2204RichmondBritish Columbia, Canada 27 US AQI▲38
not rankedGualacoOlancho Department, Honduras 27 US AQI
not rankedQueensNew York, United States 27 US AQI
=2235WakefieldEngland, United Kingdom 26 US AQI▲117
=2235BristolEngland, United Kingdom 26 US AQI▲246
=2235BaselBasel-City, Switzerland 26 US AQI▲79
=2235HasseltFlanders, Belgium 26 US AQI▼215
=2235WittenbergeBrandenburg, Germany 26 US AQI▼250
=2235Schwäbisch HallBaden-Wurttemberg, Germany 26 US AQI▼66
=2235ReutlingenBaden-Wurttemberg, Germany 26 US AQI▲12
=2235Limburg an der LahnHesse, Germany 26 US AQI▲14
=2235FuldaHesse, Germany 26 US AQI▲52
=2235DarmstadtHesse, Germany 26 US AQI▲157
=2235Bad BelzigBrandenburg, Germany 26 US AQI▼98
=2235LimerickMunster, Ireland 26 US AQI▲223
=2235Saint-QuentinHauts-de-France, France 26 US AQI▼212
=2235Saint-DizierGrand Est, France 26 US AQI▼18
=2235ReimsGrand Est, France 26 US AQI▲21
=2235CherbourgNormandy, France 26 US AQI▼60
=2235TrebinjeSrpska, Bosnia and Herzegovina 26 US AQI▼494
=2235Daytona BeachFlorida, United States 26 US AQI▲267
=2235BrandermillVirginia, United States 26 US AQI▲202
=2235ManisteeMichigan, United States 26 US AQI▲232
=2235PainesvilleOhio, United States 26 US AQI▲333

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 7 days to 14 Oct 2026, 06:00 UTC: each city's mean of its daily means, cities measured on 5 or more of the 7 days. Monitor data from national networks via OpenAQ and the publishers listed at smogrank.com/sources. smogrank.com/rankings?w=7d. Ranked on low-cost sensors, with no reference monitor in the city: #1 Kuala Lumpur, #3 Dhaka, #4 Faisalabad, #5 Kasur, #6 Gujranwala, #7 Lahore, #8 Peshawar, #9 Multan and #10 Jakarta. Some readings from Vietnam's government monitors; Uzhydromet (Uzbekistan's Hydrometeorological Service); Aurassure; Department of Environment, Nepal; RMCAB (Secretaría Distrital de Ambiente, Bogotá); Love My Air (City and County of Denver); 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 readings: Vietnam's government monitors; Uzhydromet (Uzbekistan's Hydrometeorological Service); Aurassure; Department of Environment, Nepal; RMCAB (Secretaría Distrital de Ambiente, Bogotá); Love My Air (City and County of Denver); Umhverfisstofnun (Environment Agency of Iceland), no reuse terms published (why we use them).