All 3,291 cities by PM2.5, last 30 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.

=2794Goslarlast full day 10 OctLower Saxony, Germany 26 US AQI▼329
=2794CorkMunster, Ireland 26 US AQI▼328
=2794Saint-MaloBrittany, France 26 US AQI
=2794Saint-Étienne-de-MontlucPays de la Loire, France 26 US AQI
=2794QuimperBrittany, France 26 US AQI▼254
=2794MoulinsAuvergne-Rhône-Alpes, France 26 US AQI▼291
=2794CrollesAuvergne-Rhône-Alpes, France 26 US AQI▼290
=2794BourgesCentre-Val de Loire, France 26 US AQI▼325
=2794Coconut CreekFlorida, United States 26 US AQI▼250
=2794Deerfield BeachFlorida, United States 26 US AQI▼288
=2794Fort MyersFlorida, United States 26 US AQI▼213
=2794Safety HarborFlorida, United States 26 US AQI▼248
=2794Winthrop HarborIllinois, United States 26 US AQI▼209
=2794EastpointeMichigan, United States 26 US AQI▼246
=2794BellevueNebraska, United States 26 US AQI▼244
=2794MendhamNew Jersey, United States 26 US AQI▼242
=2794PainesvilleOhio, United States 26 US AQI▼241
=2794Warrensville HeightsOhio, United States 26 US AQI▼240
=2794MadisonWisconsin, United States 26 US AQI▼238
=2794AlbuquerqueNew Mexico, United States 26 US AQI▼281
=2794AnthonyNew Mexico, United States 26 US AQI▼280
=2794EnochUtah, United States 26 US AQI▼352
=2794HurricaneUtah, United States 26 US AQI▼314
=2794YrekaCalifornia, United States 26 US AQI▼278
=2794LongmontColorado, United States 26 US AQI▼277
=2794AltamontOregon, United States 26 US AQI▼312
=2794CanbyOregon, United States 26 US AQI▼276
=2794WoodburnOregon, United States 26 US AQI▼233
=2794LyndenWashington, United States 26 US AQI▼275
=2794St. ThomasOntario, Canada 26 US AQI▼228
=2794ŌshūIwate, Japan 26 US AQI▼226
=2832RigaRiga, Latvia 26 US AQI▼261
=2832GabrovoGabrovo, Bulgaria 26 US AQI▼303
=2832NonoichiIshikawa, Japan 26 US AQI▼301
=2832BuñolValencia, Spain 26 US AQI▼457
=2832GillinghamEngland, United Kingdom 26 US AQI
=2832CoventryEngland, United Kingdom 26 US AQI
=2832CheltenhamEngland, United Kingdom 26 US AQI
=2832Cheadle HulmeEngland, United Kingdom 26 US AQI
=2832BarnsleyEngland, United Kingdom 26 US AQI
=2832Zell am SeeSalzburg, Austria 26 US AQI▼336
=2832CharleroiWallonia, Belgium 26 US AQI▼369
=2832Uslarlast full day 10 OctLower Saxony, Germany 26 US AQI▼335
=2832TrochtelfingenBaden-Wurttemberg, Germany 26 US AQI▼334
=2832GärtringenBaden-Wurttemberg, Germany 26 US AQI▼333
=2832FüssenBavaria, Germany 26 US AQI
=2832Braunlagelast full day 10 OctLower Saxony, Germany 26 US AQI▼332
=2832PortlaoiseLeinster, Ireland 26 US AQI
=2832Cluain MealaMunster, Ireland 26 US AQI▼331
=2832CavanUlster, Ireland 26 US AQI▼330
=2832RodezOccitanie, France 26 US AQI▼293
=2832Montoir-de-BretagnePays de la Loire, France 26 US AQI
=2832LimogesNew Aquitaine, France 26 US AQI▼291
=2832BesançonBourgogne-Franche-Comté, France 26 US AQI
=2832LeónCastille and León, Spain 26 US AQI
=2832Daytona BeachFlorida, United States 26 US AQI▼252
=2832Palm CityFlorida, United States 26 US AQI▼287
=2832EdgewoodMaryland, United States 26 US AQI▼250
=2832Cleveland HeightsOhio, United States 26 US AQI▼249
=2832New HavenConnecticut, United States 26 US AQI▼248
=2832BrocktonMassachusetts, United States 26 US AQI▼246
=2832Port HuronMichigan, United States 26 US AQI▼245
=2832Fort Leelast full day 11 OctNew Jersey, United States 26 US AQI▼281
=2832GreensburgPennsylvania, United States 26 US AQI▼277
=2832OjaiCalifornia, United States 26 US AQI▼353
=2832Ridgecrestlast full day 11 OctCalifornia, United States 26 US AQI▼274
=2832Las VegasNevada, United States 26 US AQI▼273
=2832LubbockTexas, United States 26 US AQI▼317
=2832FlorenceOregon, United States 26 US AQI▼272
=2832Rapid CitySouth Dakota, United States 26 US AQI▼239
=2832North BendWashington, United States 26 US AQI▼270
=2832YakimaWashington, United States 26 US AQI▼348
=2832CornwallOntario, Canada 26 US AQI▼310
=2832GuelphOntario, Canada 26 US AQI▼268
=2832ShawiniganQuebec, Canada 26 US AQI▼308
=2832SmithersBritish Columbia, Canada 26 US AQI▼236
=2832Swift CurrentSaskatchewan, Canada 26 US AQI▼265
=2832KuriharaMiyagi, Japan 26 US AQI▼263
=2832IzunokuniShizuoka, Japan 26 US AQI▼235
=2832Helena Valley West CentralMontana, United States 26 US AQI▼262
=2832KostelMunicipality of Kostel, Slovenia 26 US AQI▼305
=2882TartuTartu, Estonia 25 US AQI▼354
=2882UenoharaYamanashi, Japan 25 US AQI▼282
=2882KushiroHokkaido, Japan 25 US AQI▼309
=2882NewportWales, United Kingdom 25 US AQI
=2882Milton KeynesEngland, United Kingdom 25 US AQI
=2882LimerickMunster, Ireland 25 US AQI▼345
=2882BarBar, Montenegro 25 US AQI▼339
=2882BearDelaware, United States 25 US AQI▼271
=2882WilmingtonDelaware, United States 25 US AQI▼270
=2882Belle GladeFlorida, United States 25 US AQI▼303
=2882Lake MaryFlorida, United States 25 US AQI▼268
=2882Sarasota SpringsFlorida, United States 25 US AQI▼267
=2882ScaggsvilleMaryland, United States 25 US AQI▼335
=2882UniontownPennsylvania, United States 25 US AQI▼265
=2882Saint CloudMinnesota, United States 25 US AQI▼333
=2882HermitagePennsylvania, United States 25 US AQI▼293
=2882SchlusserPennsylvania, United States 25 US AQI▼264
=2882WyomissingPennsylvania, United States 25 US AQI▼263
=2882SuperiorWisconsin, United States 25 US AQI▼325

What stands behind each figure: Checked at 2+ sites One reference monitor Low-cost sensors 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 30 days to 14 Oct 2026, 06:00 UTC: each city's mean of its daily means, cities measured on 21 or more of the 30 days. Monitor data from national networks via OpenAQ and the publishers listed at smogrank.com/sources. smogrank.com/rankings?w=30d. Ranked on low-cost sensors, with no reference monitor in the city: #1 Kasur, #2 Gujranwala, #3 Kuala Lumpur, #5 Lahore, #6 Faisalabad, #9 Peshawar and #10 Dhaka. Some values from Sensor.Community, ODbL. Some readings from Vietnam's government monitors; 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 low-cost readings: Sensor.Community, ODbL (data and licence). Some readings: Vietnam's government monitors; 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).