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.

=2568Saint PaulMinnesota, United States 29 US AQI▼295
=2568OmahaNebraska, United States 29 US AQI▼213
=2568CanonsburgPennsylvania, United States 29 US AQI▼211
=2568LebanonPennsylvania, United States 29 US AQI▼210
=2568PhoenixArizona, United States 29 US AQI▼244
=2568AtascaderoCalifornia, United States 29 US AQI▼208
=2568WindsorCalifornia, United States 29 US AQI▼283
=2568EugeneOregon, United States 29 US AQI▼207
=2568SalemOregon, United States 29 US AQI▼242
=2568BountifulUtah, United States 29 US AQI▼279
=2568Brigham CityUtah, United States 29 US AQI▼278
=2568LangfordBritish Columbia, Canada 29 US AQI▼238
=2613Veľká LomnicaPrešov Region, Slovakia 28 US AQI▼315
=2613KochaniKochani, North Macedonia 28 US AQI▼279
=2613UedaNagano, Japan 28 US AQI▼120
=2613TōganeChiba, Japan 28 US AQI▼241
=2613SapporoHokkaido, Japan 28 US AQI▼239
=2613SheringhamEngland, United Kingdom 28 US AQI
=2613PeterboroughEngland, United Kingdom 28 US AQI
=2613LoughboroughEngland, United Kingdom 28 US AQI
=2613LiverpoolEngland, United Kingdom 28 US AQI
=2613HayesEngland, United Kingdom 28 US AQI
=2613DerbyEngland, United Kingdom 28 US AQI
=2613Lübecklast full day 10 OctSchleswig-Holstein, Germany 28 US AQI
=2613Carlowlast full day 9 OctLeinster, Ireland 28 US AQI▼231
=2613VannesBrittany, France 28 US AQI▼230
=2613TarbesOccitanie, France 28 US AQI▼273
=2613MontaubanOccitanie, France 28 US AQI▼187
=2613CastresOccitanie, France 28 US AQI▼270
=2613AngoulêmeNew Aquitaine, France 28 US AQI▼269
=2613WashingtonDistrict of Columbia, United States 28 US AQI▼267
=2613BartowFlorida, United States 28 US AQI▼228
=2613GainesvilleFlorida, United States 28 US AQI▼266
=2613Pompano BeachFlorida, United States 28 US AQI▼265
=2613St. PetersburgFlorida, United States 28 US AQI▼227
=2613Smithvillelast full day 9 OctNew Jersey, United States 28 US AQI▼224
=2613HopewellVirginia, United States 28 US AQI▼264
=2613Des PlainesIllinois, United States 28 US AQI▼178
=2613Ann ArborMichigan, United States 28 US AQI▼643
=2613BlaineMinnesota, United States 28 US AQI▼261
=2613MarshallMinnesota, United States 28 US AQI▼260
=2613Saint MichaelMinnesota, United States 28 US AQI▼259
=2613Grand IslandNebraska, United States 28 US AQI▼217
=2613Bayonnelast full day 11 OctNew Jersey, United States 28 US AQI▼257
=2613EwingNew Jersey, United States 28 US AQI▼216
=2613ScrantonPennsylvania, United States 28 US AQI▼173
=2613Green BayWisconsin, United States 28 US AQI▼215
=2613Weirtonlast full day 10 OctWest Virginia, United States 28 US AQI▼254
=2613SebastopolCalifornia, United States 28 US AQI▼208
=2613Coeur d'AleneIdaho, United States 28 US AQI▼288
=2613PortlandOregon, United States 28 US AQI▼166
=2613OremUtah, United States 28 US AQI▼286
=2613BurienWashington, United States 28 US AQI▼285
=2613Moses LakeWashington, United States 28 US AQI▼322
=2613BrantfordOntario, Canada 28 US AQI▼200
=2613CoquitlamBritish Columbia, Canada 28 US AQI▼284
=2613LondonOntario, Canada 28 US AQI▼198
=2613Sherwood ParkAlberta, Canada 28 US AQI▼247
=2613FujiyoshidaYamanashi, Japan 28 US AQI▼158
=2613KyōtangoKyoto, Japan 28 US AQI▼244
=2661GeroGifu, Japan 28 US AQI▼204
=2661OgawamachiSaitama, Japan 28 US AQI▼242
=2661Niitsu-honchōNiigata, Japan 28 US AQI▼291
=2661MiyazuKyoto, Japan 28 US AQI▼290
=2661NorwichEngland, United Kingdom 28 US AQI
=2661Burton upon TrentEngland, United Kingdom 28 US AQI
=2661Ashton-under-Lynelast full day 11 OctEngland, United Kingdom 28 US AQI
=2661Trappenkamplast full day 10 OctSchleswig-Holstein, Germany 28 US AQI
=2661TauberbischofsheimBaden-Wurttemberg, Germany 28 US AQI▼324
=2661Kiellast full day 10 OctSchleswig-Holstein, Germany 28 US AQI▼402
=2661Flensburglast full day 10 OctSchleswig-Holstein, Germany 28 US AQI▼447
=2661EnniscorthyLeinster, Ireland 28 US AQI▼237
=2661PassyAuvergne-Rhône-Alpes, France 28 US AQI
=2661Montceau-les-MinesBourgogne-Franche-Comté, France 28 US AQI
=2661Ajacciolast full day 7 OctCorsica, France 28 US AQI▼277
=2661ColumbusIndiana, United States 28 US AQI▼190
=2661KearneyMissouri, United States 28 US AQI▼230
=2661KingsportTennessee, United States 28 US AQI▼270
=2661RichmondVirginia, United States 28 US AQI▼269
=2661SalemVirginia, United States 28 US AQI▼228
=2661CaryIllinois, United States 28 US AQI▼186
=2661BurnsvilleMinnesota, United States 28 US AQI▼267
=2661ShakopeeMinnesota, United States 28 US AQI▼266
=2661PatersonNew Jersey, United States 28 US AQI▼224
=2661New AlbanyOhio, United States 28 US AQI▼223
=2661JohnstownPennsylvania, United States 28 US AQI▼222
=2661Camp VerdeArizona, United States 28 US AQI▼262
=2661Fort CollinsColorado, United States 28 US AQI▼255
=2661MadrasOregon, United States 28 US AQI▼254
=2661OntarioOregon, United States 28 US AQI▼253
=2661StaytonOregon, United States 28 US AQI▼252
=2661The DallesOregon, United States 28 US AQI▼251
=2661ChehalisWashington, United States 28 US AQI▼249
=2661NewmarketOntario, Canada 28 US AQI▼138
=2661North VancouverBritish Columbia, Canada 28 US AQI▼297
=2661Port CoquitlamBritish Columbia, Canada 28 US AQI▼296
=2661TerraceBritish Columbia, Canada 28 US AQI▼173
=2661WindsorOntario, Canada 28 US AQI▼209
=2661L'Ancienne-LoretteQuebec, Canada 28 US AQI▼330
=2661HitachiomiyaIbaraki, Japan 28 US AQI▼208

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).