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.

=1772Simi ValleyCalifornia, United States 34 US AQI▲234
=1772Sunland ParkNew Mexico, United States 34 US AQI▲2
=1772MedfordOregon, United States 34 US AQI▼147
=1772MillcreekUtah, United States 34 US AQI▼373
=1772KitchenerOntario, Canada 34 US AQI▲428
=1772TorontoOntario, Canada 34 US AQI▲509
=1772MizunashiFukushima, Japan 34 US AQI▲65
=1772LemwerderLower Saxony, Germany 34 US AQI▼311
not rankedCranberry TownshipPennsylvania, United States 34 US AQI
=1799OlsztynWarmia-Masuria, Poland 33 US AQI▼106
=1799TamworthNew South Wales, Australia 33 US AQI▼16
=1799New LambtonNew South Wales, Australia 33 US AQI▲45
=1799WorthingEngland, United Kingdom 33 US AQI▲73
=1799SchiedamSouth Holland, The Netherlands 33 US AQI▼386
=1799MedemblikNorth Holland, The Netherlands 33 US AQI▼14
=1799SteyrUpper Austria, Austria 33 US AQI▼247
=1799JenbachTyrol, Austria 33 US AQI▲75
=1799ErtveldeFlanders, Belgium 33 US AQI▼485
=1799BremenBremen, Germany 33 US AQI▼384
=1799LuxembourgLuxembourg, Luxembourg 33 US AQI▼61
=1799WexfordLeinster, Ireland 33 US AQI▲339
=1799PilsenPlzeň Region, Czechia 33 US AQI▲153
=1799Guanajuatolast full day 11 OctGuanajuato, Mexico 33 US AQI▲232
=1799ElizabethtownKentucky, United States 33 US AQI▲383
=1799YpsilantiMichigan, United States 33 US AQI▲277
=1799SteubenvilleOhio, United States 33 US AQI▲240
=1799YoungstownOhio, United States 33 US AQI▲241
=1799VermillionSouth Dakota, United States 33 US AQI▲90
=1799OceanoCalifornia, United States 33 US AQI▲6
=1799ParadiseCalifornia, United States 33 US AQI▲94
=1799San FranciscoCalifornia, United States 33 US AQI▲357
=1799EugeneOregon, United States 33 US AQI▼139
=1799Columbia CityWashington, United States 33 US AQI
=1799CalgaryAlberta, Canada 33 US AQI▼23
=1799NasushiobaraTochigi, Japan 33 US AQI
not rankedParklandFlorida, United States 33 US AQI
not rankedWest AllisWisconsin, United States 33 US AQI
not rankedDanvilleCalifornia, United States 33 US AQI
not rankedLos AltosCalifornia, United States 33 US AQI
=1825RēzekneRēzekne, Latvia 33 US AQI▲112
=1825EmeraldQueensland, Australia 33 US AQI▲75
=1825CampbelltownNew South Wales, Australia 33 US AQI▲114
=1825SpijkenisseSouth Holland, The Netherlands 33 US AQI▼386
=1825NijmegenGelderland, The Netherlands 33 US AQI▼548
=1825LopikUtrecht, The Netherlands 33 US AQI▼445
=1825HaarlemNorth Holland, The Netherlands 33 US AQI
=1825Wiener NeustadtLower Austria, Austria 33 US AQI▼513
=1825SchwazTyrol, Austria 33 US AQI▲48
=1825SchwerinMecklenburg-Vorpommern, Germany 33 US AQI▼615
=1825Brandenburg an der HavelBrandenburg, Germany 33 US AQI▼180
=1825RouenNormandy, France 33 US AQI▲25
=1825Heroica MatamorosTamaulipas, Mexico 33 US AQI▼58
=1825San Miguel de Allendelast full day 11 OctGuanajuato, Mexico 33 US AQI▲280
=1825OrlandoFlorida, United States 33 US AQI▲281
=1825University CityMissouri, United States 33 US AQI▼26
=1825LafayetteIndiana, United States 33 US AQI▲99
=1825Bay CityMichigan, United States 33 US AQI▲175
=1825Detroit LakesMinnesota, United States 33 US AQI▼204
=1825BlairNebraska, United States 33 US AQI▲136
=1825LebanonPennsylvania, United States 33 US AQI▲407
=1825SuperiorWisconsin, United States 33 US AQI▼103
=1825TomahWisconsin, United States 33 US AQI▲65
=1825ChicoCalifornia, United States 33 US AQI▲67
=1825OaklandCalifornia, United States 33 US AQI▲330
=1825South San FranciscoCalifornia, United States 33 US AQI▼52
=1825MilwaukieOregon, United States 33 US AQI▲258
=1825TulalipWashington, United States 33 US AQI▲9
=1825HamiltonOntario, Canada 33 US AQI▲455
=1825WindsorOntario, Canada 33 US AQI▲338
not rankedBan LaongamSalavan Province, Laos 33 US AQI
not rankedRibarroja del TuriaValencia, Spain 33 US AQI
not rankedRoosendaalNorth Brabant, The Netherlands 33 US AQI
=1855HaskovoHaskovo, Bulgaria 32 US AQI▼16
=1855ValenciaValencia, Spain 32 US AQI
=1855LeedsEngland, United Kingdom 32 US AQI▲47
=1855ZwanenburgNorth Holland, The Netherlands 32 US AQI▼99
=1855EnschedeOverijssel, The Netherlands 32 US AQI▼611
=1855BreukelenUtrecht, The Netherlands 32 US AQI▼502
=1855MechelenFlanders, Belgium 32 US AQI▼337
=1855StrausbergBrandenburg, Germany 32 US AQI▼153
=1855MannheimBaden-Wurttemberg, Germany 32 US AQI▼150
=1855TraleeMunster, Ireland 32 US AQI▲26
=1855BallinasloeConnacht, Ireland 32 US AQI▲132
=1855ŻaryLubusz, Poland 32 US AQI
=1855Presidente PrudenteSão Paulo, Brazil 32 US AQI▲61
=1855GainesvilleGeorgia, United States 32 US AQI▲289
=1855JeffersontownKentucky, United States 32 US AQI▲328
=1855NicholasvilleKentucky, United States 32 US AQI▲411
=1855Oak GroveKentucky, United States 32 US AQI▲370
=1855KearneyMissouri, United States 32 US AQI▲215
=1855WavelandMississippi, United States 32 US AQI▲216
=1855LexingtonNorth Carolina, United States 32 US AQI▲253
=1855BraidwoodIllinois, United States 32 US AQI▲331
=1855Lincoln ParkMichigan, United States 32 US AQI▲332
=1855New BaltimoreMichigan, United States 32 US AQI▲415
=1855TecumsehMichigan, United States 32 US AQI▲334
=1855Bayonnelast full day 11 OctNew Jersey, United States 32 US AQI▲146
=1855Jersey CityNew Jersey, United States 32 US AQI▲258
=1855AkronOhio, United States 32 US AQI▲296
=1855ScrantonPennsylvania, United States 32 US AQI▲584

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).