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.

=2996LamarColorado, United States 29 US AQI1.0 times the WHO guideline▼381
=2996PuebloColorado, United States 29 US AQI1.0 times the WHO guideline▼380
=2996WindsorColorado, United States 29 US AQI1.0 times the WHO guideline▼397
=2996ScottsbluffNebraska, United States 29 US AQI1.0 times the WHO guideline▼379
=2996VancouverBritish Columbia, Canada 29 US AQI1.0 times the WHO guideline▼377
=2996MoranbahQueensland, Australia 29 US AQI1.0 times the WHO guideline▼336
=2996Logan CityQueensland, Australia 29 US AQI1.0 times the WHO guideline▼335
=2996Sunshine CoastQueensland, Australia 29 US AQI1.0 times the WHO guideline▼376
=3009Narvalast full day 10 OctIda-Virumaa, Estonia 28 US AQI1.0 times the WHO guideline▼423
=3009Santiago do Cacémlast full day 11 OctSetúbal, Portugal 28 US AQI1.0 times the WHO guideline▼388
=3009CheltenhamEngland, United Kingdom 28 US AQI1.0 times the WHO guideline
=3009BrayLeinster, Ireland 28 US AQI1.0 times the WHO guideline
=3009WareMassachusetts, United States 28 US AQI1.0 times the WHO guideline▼387
=3009Grand IslandNebraska, United States 28 US AQI1.0 times the WHO guideline▼372
=3009BenningtonVermont, United States 28 US AQI1.0 times the WHO guideline▼386
=3009LancasterCalifornia, United States 28 US AQI1.0 times the WHO guideline▼385
=3009San RafaelCalifornia, United States 28 US AQI1.0 times the WHO guideline▼384
=3009Steamboat SpringsColorado, United States 28 US AQI1.0 times the WHO guideline▼383
=3009ShorelineWashington, United States 28 US AQI1.0 times the WHO guideline▼382
=3009BurnabyBritish Columbia, Canada 28 US AQI1.0 times the WHO guideline▼381
=3009DuncanBritish Columbia, Canada 28 US AQI1.0 times the WHO guideline▼379
=3009LangleyBritish Columbia, Canada 28 US AQI1.0 times the WHO guideline▼378
=3009Sept-ÎlesQuebec, Canada 28 US AQI1.0 times the WHO guideline▼377
=3009BathurstNew Brunswick, Canada 28 US AQI1.0 times the WHO guideline▼376
=3025KuopioNorth Savo, Finland 28 US AQI1.0 times the WHO guideline▼391
=3025Coffs HarbourNew South Wales, Australia 28 US AQI1.0 times the WHO guideline▼390
=3025EdinburghScotland, United Kingdom 28 US AQI1.0 times the WHO guideline
=3025Presque IsleMaine, United States 28 US AQI1.0 times the WHO guideline▼389
=3025White Plainslast full day 11 OctNew York, United States 28 US AQI1.0 times the WHO guideline▼387
=3025Camp VerdeArizona, United States 28 US AQI1.0 times the WHO guideline▼386
=3025ParadiseCalifornia, United States 28 US AQI1.0 times the WHO guideline▼385
=3025North ValleyNew Mexico, United States 28 US AQI1.0 times the WHO guideline▼384
=3025Gardnerville RanchosNevada, United States 28 US AQI1.0 times the WHO guideline▼383
=3025SilvertonOregon, United States 28 US AQI1.0 times the WHO guideline▼382
=3025WoodburnOregon, United States 28 US AQI1.0 times the WHO guideline▼381
=3025KentWashington, United States 28 US AQI1.0 times the WHO guideline▼368
=3025CoquitlamBritish Columbia, Canada 28 US AQI1.0 times the WHO guideline▼396
=3025Strawberry HillBritish Columbia, Canada 28 US AQI1.0 times the WHO guideline▼380
=3039GladstoneQueensland, Australia 27 US AQI1.0 times the WHO guideline▼374
=3039HedemoraDalarna, Sweden 27 US AQI1.0 times the WHO guideline▼392
=3039Mount Ivylast full day 11 OctNew York, United States 27 US AQI1.0 times the WHO guideline▼391
=3039SolvangCalifornia, United States 27 US AQI1.0 times the WHO guideline▼390
=3039PortlandOregon, United States 27 US AQI1.0 times the WHO guideline▼387
=3039TalentOregon, United States 27 US AQI1.0 times the WHO guideline▼386
=3039Heber CityUtah, United States 27 US AQI1.0 times the WHO guideline▼385
=3039BremertonWashington, United States 27 US AQI1.0 times the WHO guideline▼384
=3039ChehalisWashington, United States 27 US AQI1.0 times the WHO guideline▼383
=3039LyndenWashington, United States 27 US AQI1.0 times the WHO guideline▼381
=3039KitimatBritish Columbia, Canada 27 US AQI1.0 times the WHO guideline▼365
=3039Port CoquitlamBritish Columbia, Canada 27 US AQI1.0 times the WHO guideline▼380
=3051JyväskyläCentral Finland, Finland 27 US AQI1.0 times the WHO guideline▼389
=3051MoeVictoria, Australia 27 US AQI1.0 times the WHO guideline▼387
=3051LourinhãLisbon, Portugal 27 US AQI1.0 times the WHO guideline
=3051ÖrebroÖrebro, Sweden 27 US AQI1.0 times the WHO guideline▼405
=3051FolsomCalifornia, United States 27 US AQI1.0 times the WHO guideline▼385
=3051Los BanosCalifornia, United States 27 US AQI1.0 times the WHO guideline▼384
=3051TruckeeCalifornia, United States 27 US AQI1.0 times the WHO guideline▼383
=3051VacavilleCalifornia, United States 27 US AQI1.0 times the WHO guideline▼382
=3051Cañon CityColorado, United States 27 US AQI1.0 times the WHO guideline▼401
=3051Ken CarylColorado, United States 27 US AQI1.0 times the WHO guideline▼381
=3051Las CrucesNew Mexico, United States 27 US AQI1.0 times the WHO guideline▼400
=3051Apache JunctionArizona, United States 27 US AQI1.0 times the WHO guideline▼380
=3051BoulderColorado, United States 27 US AQI1.0 times the WHO guideline▼379
=3051BeavertonOregon, United States 27 US AQI1.0 times the WHO guideline▼378
=3051RichmondBritish Columbia, Canada 27 US AQI1.0 times the WHO guideline▼376
=3051Saint John EastNew Brunswick, Canada 27 US AQI1.0 times the WHO guideline▼375
=3051Ponta DelgadaAzores, Portugal 27 US AQI1.0 times the WHO guideline
=3051Mango HillQueensland, Australia 27 US AQI1.0 times the WHO guideline▼374
=3051Tannum SandsQueensland, Australia 27 US AQI1.0 times the WHO guideline▼373
=3070ToowoombaQueensland, Australia 26 US AQI0.9 times the WHO guideline▼407
=3070CacémLisbon, Portugal 26 US AQI0.9 times the WHO guideline
=3070GersfeldHesse, Germany 26 US AQI0.9 times the WHO guideline▼389
=3070ÅsaneVestland, Norway 26 US AQI0.9 times the WHO guideline
=3070Sioux FallsSouth Dakota, United States 26 US AQI0.9 times the WHO guideline▼388
=3070HollisterCalifornia, United States 26 US AQI0.9 times the WHO guideline▼387
=3070Ridgecrestlast full day 11 OctCalifornia, United States 26 US AQI0.9 times the WHO guideline▼386
=3070PierreSouth Dakota, United States 26 US AQI0.9 times the WHO guideline▼385
=3070LaceyWashington, United States 26 US AQI0.9 times the WHO guideline▼384
=3070NanaimoBritish Columbia, Canada 26 US AQI0.9 times the WHO guideline▼383
=3070Rouyn-NorandaQuebec, Canada 26 US AQI0.9 times the WHO guideline▼382
=3070WhistlerBritish Columbia, Canada 26 US AQI0.9 times the WHO guideline▼381
=3082HämeenkyläUusimaa, Finland 26 US AQI0.9 times the WHO guideline▼392
=3082EmeraldQueensland, Australia 26 US AQI0.9 times the WHO guideline▼391
=3082Castelló de la PlanaValencia, Spain 26 US AQI0.9 times the WHO guideline
=3082KüssnachtSchwyz, Switzerland 26 US AQI0.9 times the WHO guideline▼390
=3082JumetWallonia, Belgium 26 US AQI0.9 times the WHO guideline▼402
=3082AspenColorado, United States 26 US AQI0.9 times the WHO guideline▼387
=3082Carson CityNevada, United States 26 US AQI0.9 times the WHO guideline▼386
=3082PriceUtah, United States 26 US AQI0.9 times the WHO guideline▼385
=3082PrestonIdaho, United States 26 US AQI0.9 times the WHO guideline▼384
=3082HavreMontana, United States 26 US AQI0.9 times the WHO guideline▼383
=3082RoseburgOregon, United States 26 US AQI0.9 times the WHO guideline▼382
=3082VernalUtah, United States 26 US AQI0.9 times the WHO guideline▼381
=3082BurienWashington, United States 26 US AQI0.9 times the WHO guideline▼380
=3082North BendWashington, United States 26 US AQI0.9 times the WHO guideline▼379
=3082RidgefieldWashington, United States 26 US AQI0.9 times the WHO guideline▼378
=3082SmithersBritish Columbia, Canada 26 US AQI0.9 times the WHO guideline▼370
=3082TerraceBritish Columbia, Canada 26 US AQI0.9 times the WHO guideline▼377
=3099Tallinnlast full day 10 OctHarjumaa, Estonia 25 US AQI0.9 times the WHO guideline▼420
=3099SantanaMadeira, Portugal 25 US AQI0.9 times the WHO guideline

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), 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.

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: 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).