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.

=2417MissoulaMontana, United States 23 US AQI▼140
=2417BeavertonOregon, United States 23 US AQI▲126
=2417BendOregon, United States 23 US AQI▲91
=2417Oregon CityOregon, United States 23 US AQI▲93
=2417HerrimanUtah, United States 23 US AQI▼71
=2417North OgdenUtah, United States 23 US AQI▼70
=2417CrestonBritish Columbia, Canada 23 US AQI▲27
=2417Swift CurrentSaskatchewan, Canada 23 US AQI▼67
=2417VictoriaBritish Columbia, Canada 23 US AQI▲98
=2417Val-de-ReuilNormandy, France 23 US AQI▼36
not rankedPomonaCalifornia, United States 23 US AQI
=2452EldaValencia, Spain 22 US AQI
=2452LoughboroughEngland, United Kingdom 22 US AQI▼65
=2452GraysEngland, United Kingdom 22 US AQI▼64
=2452ChristchurchEngland, United Kingdom 22 US AQI▲28
=2452Malmölast full day 11 OctSkåne, Sweden 22 US AQI
=2452ReutteTyrol, Austria 22 US AQI▲71
=2452RixensartWallonia, Belgium 22 US AQI▼321
=2452GrevenmacherGrevenmacher, Luxembourg 22 US AQI▲186
=2452Dún LaoghaireLeinster, Ireland 22 US AQI▲139
=2452RognacProvence-Alpes-Côte d'Azur, France 22 US AQI▲210
=2452MetzGrand Est, France 22 US AQI▲144
=2452JonageAuvergne-Rhône-Alpes, France 22 US AQI▼194
=2452CrollesAuvergne-Rhône-Alpes, France 22 US AQI▼20
=2452ChartresCentre-Val de Loire, France 22 US AQI▼121
=2452Beaumont-sur-OiseÎle-de-France, France 22 US AQI▼87
=2452AngoulêmeNew Aquitaine, France 22 US AQI▼54
=2452AlbiOccitanie, France 22 US AQI▼119
=2452Villarejo de SalvanésMadrid, Spain 22 US AQI
=2452SarriaGalicia, Spain 22 US AQI
=2452BermeoBasque Country, Spain 22 US AQI
=2452Zacatepec de HidalgoMorelos, Mexico 22 US AQI▲166
=2452GlasgowDelaware, United States 22 US AQI▲214
=2452FrostburgMaryland, United States 22 US AQI▲305
=2452RockvilleMaryland, United States 22 US AQI▼83
=2452UniontownPennsylvania, United States 22 US AQI▲289
=2452Newburghlast full day 11 OctNew York, United States 22 US AQI▲150
=2452EriePennsylvania, United States 22 US AQI▲291
=2452GreensburgPennsylvania, United States 22 US AQI▲261
=2452BridgeportConnecticut, United States 22 US AQI▲220
=2452MaranaArizona, United States 22 US AQI▲88
=2452ArvadaColorado, United States 22 US AQI▲237
=2452Ken CarylColorado, United States 22 US AQI
=2452PuebloColorado, United States 22 US AQI▼40
=2452South ValleyNew Mexico, United States 22 US AQI▼11
=2452HurricaneUtah, United States 22 US AQI▼149
=2452BoiseIdaho, United States 22 US AQI▼37
=2452North PortlandOregon, United States 22 US AQI▲93
=2452The DallesOregon, United States 22 US AQI▲17
=2452LongviewWashington, United States 22 US AQI▲172
=2452RidgefieldWashington, United States 22 US AQI▲19
=2452SheltonWashington, United States 22 US AQI▲174
=2452GilletteWyoming, United States 22 US AQI▲62
=2452Drayton ValleyAlberta, Canada 22 US AQI▲126
=2452Williams LakeBritish Columbia, Canada 22 US AQI▲24
=2452Saint-GeorgesQuebec, Canada 22 US AQI▲178
not rankedConcordNorth Carolina, United States 22 US AQI
not rankedBlacksburgVirginia, United States 22 US AQI
=2497GeelongVictoria, Australia 22 US AQI
=2497LiverpoolEngland, United Kingdom 22 US AQI▲160
=2497HorleyEngland, United Kingdom 22 US AQI▼142
=2497GloucesterEngland, United Kingdom 22 US AQI▲114
=2497GillinghamEngland, United Kingdom 22 US AQI▲23
=2497LuganoTicino, Switzerland 22 US AQI▼293
=2497MusselkanaalGroningen, The Netherlands 22 US AQI▼441
=2497LeixlipLeinster, Ireland 22 US AQI▲143
=2497CavanUlster, Ireland 22 US AQI▲63
=2497BlanchardstownLeinster, Ireland 22 US AQI▲64
=2497Saint-ChamondAuvergne-Rhône-Alpes, France 22 US AQI▲277
=2497L'Isle-d'AbeauAuvergne-Rhône-Alpes, France 22 US AQI▼204
=2497ChambéryAuvergne-Rhône-Alpes, France 22 US AQI▼100
=2497CaenNormandy, France 22 US AQI▼278
=2497AngersPays de la Loire, France 22 US AQI▲32
=2497ScaggsvilleMaryland, United States 22 US AQI▲36
=2497Atlantic CityNew Jersey, United States 22 US AQI▲170
=2497KeeneNew Hampshire, United States 22 US AQI▲104
=2497New BrunswickNew Jersey, United States 22 US AQI▲148
=2497AltoonaPennsylvania, United States 22 US AQI▲265
=2497WarrenPennsylvania, United States 22 US AQI▲248
=2497PrinevilleOregon, United States 22 US AQI▲49
=2497BountifulUtah, United States 22 US AQI▼300
=2497FinleyWashington, United States 22 US AQI▼55
=2497North BendWashington, United States 22 US AQI▼27
=2497Spokane ValleyWashington, United States 22 US AQI▼149
=2497Walla WallaWashington, United States 22 US AQI▼54
=2497AnchorageAlaska, United States 22 US AQI▲80
=2497Saint-Jean-sur-RichelieuQuebec, Canada 22 US AQI▲132
=2497Tri-CitiesWashington, United States 22 US AQI▼48
not rankedCliftonNew Jersey, United States 22 US AQI
=2527GoulburnNew South Wales, Australia 21 US AQI▲80
=2527SpekeEngland, United Kingdom 21 US AQI▲26
=2527SheringhamEngland, United Kingdom 21 US AQI▼75
=2527SeafordEngland, United Kingdom 21 US AQI▲27
=2527PortsmouthEngland, United Kingdom 21 US AQI▲54
=2527HooEngland, United Kingdom 21 US AQI▲56
=2527DerbyEngland, United Kingdom 21 US AQI▼48
=2527KollumFriesland, The Netherlands 21 US AQI▼44
=2527HeerlenLimburg, The Netherlands 21 US AQI▼212
=2527VielsalmWallonia, Belgium 21 US AQI▼171
=2527BastogneWallonia, Belgium 21 US AQI▼136

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).