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.

=2235MonessenPennsylvania, United States 26 US AQI▲173
=2235DenverColorado, United States 26 US AQI▲109
=2235Coos BayOregon, United States 26 US AQI▲370
=2235MagnaUtah, United States 26 US AQI▼187
=2235RooseveltUtah, United States 26 US AQI▼114
=2235West Valley CityUtah, United States 26 US AQI▼112
=2235GrandviewWashington, United States 26 US AQI▼186
=2235Moses LakeWashington, United States 26 US AQI▼185
=2235GibsonsBritish Columbia, Canada 26 US AQI▼111
=2235HopeBritish Columbia, Canada 26 US AQI▼36
not rankedSevernMaryland, United States 26 US AQI
not rankedChristiansburgVirginia, United States 26 US AQI
not rankedFoster CityCalifornia, United States 26 US AQI
=2266GrangeSouth Australia, Australia 26 US AQI
=2266GunnedahNew South Wales, Australia 26 US AQI▲118
=2266ArmidaleNew South Wales, Australia 26 US AQI▲119
=2266RotherhamEngland, United Kingdom 26 US AQI▲16
=2266PlymouthEngland, United Kingdom 26 US AQI▲289
=2266DewsburyEngland, United Kingdom 26 US AQI▲46
=2266GroningenGroningen, The Netherlands 26 US AQI▼209
=2266Biberach an der RißBaden-Wurttemberg, Germany 26 US AQI▲22
=2266BensheimHesse, Germany 26 US AQI▲54
=2266LongfordLeinster, Ireland 26 US AQI▲23
=2266EnniscorthyLeinster, Ireland 26 US AQI▲221
=2266DundalkLeinster, Ireland 26 US AQI▼51
=2266DroghedaLeinster, Ireland 26 US AQI▲193
=2266Villefranche-sur-SaôneAuvergne-Rhône-Alpes, France 26 US AQI▼127
=2266RoussillonAuvergne-Rhône-Alpes, France 26 US AQI▲93
=2266RennesBrittany, France 26 US AQI▼164
=2266BesançonBourgogne-Franche-Comté, France 26 US AQI▲98
=2266AvignonProvence-Alpes-Côte d'Azur, France 26 US AQI▼446
=2266Kuils RiverWestern Cape, South Africa 26 US AQI▼88
=2266SeafordDelaware, United States 26 US AQI▲169
=2266Winter ParkFlorida, United States 26 US AQI▲265
=2266PikevilleKentucky, United States 26 US AQI▲266
=2266MarvinNorth Carolina, United States 26 US AQI▲238
=2266Short PumpVirginia, United States 26 US AQI▲199
=2266WaterburyConnecticut, United States 26 US AQI▲200
=2266MoabUtah, United States 26 US AQI▲112
=2266ReddingCalifornia, United States 26 US AQI▼147
=2266MoscowIdaho, United States 26 US AQI▼30
=2266CanbyOregon, United States 26 US AQI▼70
=2266RoseburgOregon, United States 26 US AQI▲12
=2266CoquitlamBritish Columbia, Canada 26 US AQI▲41
=2266North VancouverBritish Columbia, Canada 26 US AQI▼26
=2266SquamishBritish Columbia, Canada 26 US AQI▼104
=2266Fort BlissTexas, United States 26 US AQI▲154
not rankedPeterleeEngland, United Kingdom 26 US AQI
not rankedColumbiaMaryland, United States 26 US AQI
not rankedMerrillvilleIndiana, United States 26 US AQI
=2300CwmafanWales, United Kingdom 25 US AQI▲312
=2300WormerNorth Holland, The Netherlands 25 US AQI▲90
=2300Habay-la-VieilleWallonia, Belgium 25 US AQI▼95
=2300BrusselsBrussels Capital, Belgium 25 US AQI▼357
=2300AarschotFlanders, Belgium 25 US AQI▼242
=2300TitzNorth Rhine-Westphalia, Germany 25 US AQI▼513
=2300Neuenburg am RheinBaden-Wurttemberg, Germany 25 US AQI▼130
=2300KarlsruheBaden-Wurttemberg, Germany 25 US AQI▼129
=2300BebraHesse, Germany 25 US AQI▲93
=2300Saint-MaloBrittany, France 25 US AQI▼46
=2300PoitiersNew Aquitaine, France 25 US AQI▼350
=2300PassyAuvergne-Rhône-Alpes, France 25 US AQI▲190
=2300DijonBourgogne-Franche-Comté, France 25 US AQI▲95
=2300CreilHauts-de-France, France 25 US AQI▼235
=2300Chalon-sur-SaôneBourgogne-Franche-Comté, France 25 US AQI▲63
=2300KoperUrban Municipality of Koper, Slovenia 25 US AQI▼385
=2300KourouGuyane, French Guiana 25 US AQI▲99
=2300AsunciónAsuncion, Paraguay 25 US AQI▼592
=2300Le LamentinMartinique, Martinique 25 US AQI▲134
=2300WilmingtonDelaware, United States 25 US AQI▲297
=2300KingsportTennessee, United States 25 US AQI▲234
=2300SpringfieldMassachusetts, United States 25 US AQI▲300
=2300CloquetMinnesota, United States 25 US AQI▼110
=2300Fort Leelast full day 11 OctNew Jersey, United States 25 US AQI▲104
=2300Colorado SpringsColorado, United States 25 US AQI▲76
=2300Idaho FallsIdaho, United States 25 US AQI▼65
=2300Forest GroveOregon, United States 25 US AQI▲45
=2300Spanish ForkUtah, United States 25 US AQI▼178
not rankedRastattBaden-Wurttemberg, Germany 25 US AQI
not rankedMontreuilÎle-de-France, France 25 US AQI
=2328Newcastle upon TyneEngland, United Kingdom 24 US AQI▲58
=2328GlasgowScotland, United Kingdom 24 US AQI▼18
=2328EastbourneEngland, United Kingdom 24 US AQI▼17
=2328BelfastNorthern Ireland, United Kingdom 24 US AQI▲95
=2328WieslochBaden-Wurttemberg, Germany 24 US AQI▼121
=2328HeidelbergBaden-Wurttemberg, Germany 24 US AQI▼117
=2328FriedrichshafenBaden-Wurttemberg, Germany 24 US AQI▼10
=2328Esch-sur-AlzetteEsch-sur-Alzette, Luxembourg 24 US AQI▼227
=2328CorkMunster, Ireland 24 US AQI▲264
=2328PérigueuxNew Aquitaine, France 24 US AQI▲32
=2328La GardeProvence-Alpes-Côte d'Azur, France 24 US AQI▲234
=2328Aix-en-ProvenceProvence-Alpes-Côte d'Azur, France 24 US AQI▼69
=2328RiedstadtHesse, Germany 24 US AQI▲105
=2328Lake MaryFlorida, United States 24 US AQI▲270
=2328RoanokeVirginia, United States 24 US AQI▲271
=2328DuluthMinnesota, United States 24 US AQI▼56
=2328BridgevillePennsylvania, United States 24 US AQI▲293
=2328AberdeenSouth Dakota, United States 24 US AQI▼94
=2328El CentroCalifornia, United States 24 US AQI▲46
=2328Ridgecrestlast full day 11 OctCalifornia, United States 24 US AQI▲112

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).