All 3,198 cities by PM2.5, this year

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.

=3099HamoisWallonia, Belgium 25 US AQI0.9 times the WHO guideline▼406
=3099AnsWallonia, Belgium 25 US AQI0.9 times the WHO guideline▼393
=3099ShannonMunster, Ireland 25 US AQI0.9 times the WHO guideline
=3099MaranaArizona, United States 25 US AQI0.9 times the WHO guideline▼392
=3099Spring ValleyNevada, United States 25 US AQI0.9 times the WHO guideline▼391
=3099HurricaneUtah, United States 25 US AQI0.9 times the WHO guideline▼390
=3099MilwaukieOregon, United States 25 US AQI0.9 times the WHO guideline▼389
=3099LongviewWashington, United States 25 US AQI0.9 times the WHO guideline▼388
=3109CairnsQueensland, Australia 24 US AQI0.9 times the WHO guideline▼382
=3109CorroiosSetúbal, Portugal 24 US AQI0.9 times the WHO guideline
=3109SaltashEngland, United Kingdom 24 US AQI0.9 times the WHO guideline
=3112NarrabriNew South Wales, Australia 24 US AQI0.9 times the WHO guideline▼398
=3112FunchalMadeira, Portugal 24 US AQI0.9 times the WHO guideline▼397
=3112BastogneWallonia, Belgium 24 US AQI0.9 times the WHO guideline▼383
=3112LaconiaNew Hampshire, United States 24 US AQI0.9 times the WHO guideline▼395
=3112AberdeenSouth Dakota, United States 24 US AQI0.9 times the WHO guideline▼399
=3112VermillionSouth Dakota, United States 24 US AQI0.9 times the WHO guideline▼394
=3112HendersonNevada, United States 24 US AQI0.9 times the WHO guideline▼393
=3112Coos BayOregon, United States 24 US AQI0.9 times the WHO guideline▼381
=3112SheltonWashington, United States 24 US AQI0.9 times the WHO guideline▼392
=3112GilletteWyoming, United States 24 US AQI0.9 times the WHO guideline▼391
=3112FrederictonNew Brunswick, Canada 24 US AQI0.9 times the WHO guideline▼389
=3112MonctonNew Brunswick, Canada 24 US AQI0.9 times the WHO guideline▼388
=3112North VancouverBritish Columbia, Canada 24 US AQI0.9 times the WHO guideline▼387
=3125TamperePirkanmaa, Finland 23 US AQI0.8 times the WHO guideline▼399
=3125Saint-PaulReunion, Reunion 23 US AQI0.8 times the WHO guideline
=3125BlackwaterQueensland, Australia 23 US AQI0.8 times the WHO guideline
=3125EupenWallonia, Belgium 23 US AQI0.8 times the WHO guideline▼409
=3125EnterpriseNevada, United States 23 US AQI0.8 times the WHO guideline▼395
=3125HonoluluHawaii, United States 23 US AQI0.8 times the WHO guideline▼393
=3125DeltaBritish Columbia, Canada 23 US AQI0.8 times the WHO guideline▼403
=3125Labrador CityNewfoundland and Labrador, Canada 23 US AQI0.8 times the WHO guideline▼392
=3125West Vancouverlast full day 11 OctBritish Columbia, Canada 23 US AQI0.8 times the WHO guideline▼391
=3134Kohtla-Järvelast full day 9 OctIda-Virumaa, Estonia 23 US AQI0.8 times the WHO guideline▼399
=3134OuluNorth Ostrobothnia, Finland 23 US AQI0.8 times the WHO guideline▼398
=3134VielsalmWallonia, Belgium 23 US AQI0.8 times the WHO guideline▼406
=3134DallasOregon, United States 23 US AQI0.8 times the WHO guideline▼395
=3134North PortlandOregon, United States 23 US AQI0.8 times the WHO guideline▼388
=3134Port TownsendWashington, United States 23 US AQI0.8 times the WHO guideline▼394
=3134MiramichiNew Brunswick, Canada 23 US AQI0.8 times the WHO guideline▼393
=3141Mount IsaQueensland, Australia 22 US AQI0.8 times the WHO guideline▼399
=3141CouvinWallonia, Belgium 22 US AQI0.8 times the WHO guideline▼404
=3141BertrixWallonia, Belgium 22 US AQI0.8 times the WHO guideline▼403
=3141BlairNebraska, United States 22 US AQI0.8 times the WHO guideline▼398
=3141TaosNew Mexico, United States 22 US AQI0.8 times the WHO guideline▼397
=3141FlorenceOregon, United States 22 US AQI0.8 times the WHO guideline▼396
=3141KīheiHawaii, United States 22 US AQI0.8 times the WHO guideline▼394
=3141PalmerAlaska, United States 22 US AQI0.8 times the WHO guideline▼393
=3141AnchorageAlaska, United States 22 US AQI0.8 times the WHO guideline▼392
=3150UmeåVästerbotten, Sweden 22 US AQI0.8 times the WHO guideline
=3150InvernessScotland, United Kingdom 22 US AQI0.8 times the WHO guideline
=3150CorvallisOregon, United States 22 US AQI0.8 times the WHO guideline▼398
=3150Forest GroveOregon, United States 22 US AQI0.8 times the WHO guideline▼386
=3150McMinnvilleOregon, United States 22 US AQI0.8 times the WHO guideline▼392
=3150LanderWyoming, United States 22 US AQI0.8 times the WHO guideline▼397
=3150KentvilleNova Scotia, Canada 22 US AQI0.8 times the WHO guideline▼395
=3150Sydneylast full day 11 OctNova Scotia, Canada 22 US AQI0.8 times the WHO guideline▼394
=3150Summerlin SouthNevada, United States 22 US AQI0.8 times the WHO guideline▼393
=3159MesquiteNevada, United States 21 US AQI0.8 times the WHO guideline▼408
=3159RivertonWyoming, United States 21 US AQI0.8 times the WHO guideline▼399
=3159KahuluiHawaii, United States 21 US AQI0.8 times the WHO guideline▼405
=3162Saint-DenisReunion, Reunion 21 US AQI0.7 times the WHO guideline▼401
=3162AlicanteValencia, Spain 21 US AQI0.7 times the WHO guideline
=3162Habay-la-VieilleWallonia, Belgium 21 US AQI0.7 times the WHO guideline▼400
=3162Boulder CityNevada, United States 21 US AQI0.7 times the WHO guideline▼399
=3162AberdeenWashington, United States 21 US AQI0.7 times the WHO guideline▼397
=3162CodyWyoming, United States 21 US AQI0.7 times the WHO guideline▼403
=3162West GreenwichRhode Island, United States 21 US AQI0.7 times the WHO guideline▼396
=3169Vila RealVila Real, Portugal 20 US AQI0.7 times the WHO guideline▼402
=3169BellevueWashington, United States 20 US AQI0.7 times the WHO guideline▼401
=3169Hilolast full day 11 OctHawaii, United States 20 US AQI0.7 times the WHO guideline▼400
=3172ÖstersundJämtland, Sweden 19 US AQI0.7 times the WHO guideline
=3172Hawaiian Paradise ParkHawaii, United States 19 US AQI0.7 times the WHO guideline▼401
=3172CharlottetownPrince Edward Island, Canada 19 US AQI0.7 times the WHO guideline▼402
=3175AdelaideSouth Australia, Australia 19 US AQI0.7 times the WHO guideline▼403
=3175Bodølast full day 7 OctNordland, Norway 19 US AQI0.7 times the WHO guideline
=3175ReykjavíkCapital Region, Iceland 19 US AQI0.7 times the WHO guideline▼402
=3175LompocCalifornia, United States 19 US AQI0.7 times the WHO guideline▼401
=3175Rock SpringsWyoming, United States 19 US AQI0.7 times the WHO guideline▼400
=3175Campbell RiverBritish Columbia, Canada 19 US AQI0.7 times the WHO guideline▼399
=3175Port WallaceNova Scotia, Canada 19 US AQI0.7 times the WHO guideline▼398
=3182Sweet HomeOregon, United States 18 US AQI0.7 times the WHO guideline▼404
=3182North CowichanBritish Columbia, Canada 18 US AQI0.7 times the WHO guideline▼403
=3184Green ValleyArizona, United States 18 US AQI0.6 times the WHO guideline▼404
=3184LaramieWyoming, United States 18 US AQI0.6 times the WHO guideline▼403
=3184RanchettesWyoming, United States 18 US AQI0.6 times the WHO guideline▼402
=3184RawlinsWyoming, United States 18 US AQI0.6 times the WHO guideline▼401
=3184WorlandWyoming, United States 18 US AQI0.6 times the WHO guideline▼400
3189CasperWyoming, United States 17 US AQI0.6 times the WHO guideline▼404
3190HortaAzores, Portugal 17 US AQI0.6 times the WHO guideline
=3191Farolast full day 3 OctFaro, Portugal 16 US AQI0.6 times the WHO guideline
=3191Brookingslast full day 8 OctOregon, United States 16 US AQI0.6 times the WHO guideline▼405
=3191Mount VernonWashington, United States 16 US AQI0.6 times the WHO guideline▼404
=3194Angra do HeroísmoAzores, Portugal 16 US AQI0.6 times the WHO guideline
=3194NewportOregon, United States 16 US AQI0.6 times the WHO guideline▼406
3196AnacortesWashington, United States 15 US AQI0.5 times the WHO guideline▼407
3197Petite-ÎleReunion, Reunion 14 US AQI0.5 times the WHO guideline
3198GarðabærCapital Region, Iceland 13 US AQI0.5 times the WHO guideline▼408

What stands behind each figure: Checked at 2+ sites One reference monitor Low-cost sensors About these marks

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), this year to 14 Oct 2026, 06:00 UTC: each city's mean of its daily means, cities measured on 70% or more of the days since 1 January (at least 14). Monitor data from national networks via OpenAQ and the publishers listed at smogrank.com/sources. smogrank.com/rankings?w=year. Ranked on low-cost sensors, with no reference monitor in the city: #2 Faisalabad, #3 Gujranwala and #6 Lahore. Some values from Sensor.Community, ODbL. Some readings from Department of Environment, Nepal; Vietnam's government monitors; Aurassure; RMCAB (Secretaría Distrital de Ambiente, Bogotá); Umhverfisstofnun (Environment Agency of Iceland), no reuse terms published.

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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: Department of Environment, Nepal; Vietnam's government monitors; Aurassure; RMCAB (Secretaría Distrital de Ambiente, Bogotá); Umhverfisstofnun (Environment Agency of Iceland), no reuse terms published (why we use them).