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.

=1379KortrijkFlanders, Belgium 42 US AQI▼136
=1379Westerlandlast full day 10 OctSchleswig-Holstein, Germany 42 US AQI
=1379Osnabrücklast full day 10 OctLower Saxony, Germany 42 US AQI▼212
=1379Norderneylast full day 10 OctLower Saxony, Germany 42 US AQI▼240
=1379NauenBrandenburg, Germany 42 US AQI▼278
=1379Mühlhausenlast full day 10 OctThuringia, Germany 42 US AQI▼277
=1379Halle (Saale)last full day 10 OctSaxony-Anhalt, Germany 42 US AQI▲46
=1379Bitterfeld-Wolfenlast full day 10 OctSaxony-Anhalt, Germany 42 US AQI▼48
=1379Zielona GóraLubusz, Poland 42 US AQI▲762
=1379ValladolidCastille and León, Spain 42 US AQI
=1379Donostia / San SebastiánBasque Country, Spain 42 US AQI▼129
=1379Novo MestoUrban Municipality of Novo Mesto, Slovenia 42 US AQI▼91
=1379Lake CityFlorida, United States 42 US AQI▼88
=1379HaysvilleKansas, United States 42 US AQI▼87
=1379JacksonMississippi, United States 42 US AQI▼124
=1379CincinnatiOhio, United States 42 US AQI▼85
=1379ColumbusOhio, United States 42 US AQI▼37
=1379AustinTexas, United States 42 US AQI▼123
=1379Franklin ParkIllinois, United States 42 US AQI▼30
=1379ToledoOhio, United States 42 US AQI▼29
=1379Redwood CityCalifornia, United States 42 US AQI▼118
=1379SacramentoCalifornia, United States 42 US AQI▼82
=1379KosaiShizuoka, Japan 42 US AQI▲66
=1379Candler-McAfeeGeorgia, United States 42 US AQI▼18
=1379NankokuKochi, Japan 42 US AQI▼78
=1379AsakuchiOkayama, Japan 42 US AQI▼76
=1427KaunasKaunas, Lithuania 42 US AQI
=1427Bueng KanBueng Kan, Thailand 42 US AQI▲25
=1427GaigeturiJeju-do, South Korea 42 US AQI▼123
=1427ShidoKagawa, Japan 42 US AQI▼60
=1427SaikiOita, Japan 42 US AQI▼118
=1427OsakaOsaka, Japan 42 US AQI▼117
=1427Narutochō-mitsuishiTokushima, Japan 42 US AQI▼116
=1427KukichūōSaitama, Japan 42 US AQI▼58
=1427IzumisanoOsaka, Japan 42 US AQI▼55
=1427IizukaFukuoka, Japan 42 US AQI▼191
=1427IchinomiyaAichi, Japan 42 US AQI▼54
=1427SagaeYamagata, Japan 42 US AQI▼108
=1427NakaIbaraki, Japan 42 US AQI▼157
=1427NagaiYamagata, Japan 42 US AQI▼156
=1427Lorcalast full day 11 OctMurcia, Spain 42 US AQI
=1427SwanseaWales, United Kingdom 42 US AQI
=1427's-GravenzandeSouth Holland, The Netherlands 42 US AQI▼185
=1427LopikUtrecht, The Netherlands 42 US AQI▼154
=1427AmsterdamNorth Holland, The Netherlands 42 US AQI▼224
=1427Stralsundlast full day 10 OctMecklenburg-Vorpommern, Germany 42 US AQI▼289
=1427SchwerinMecklenburg-Vorpommern, Germany 42 US AQI▼327
=1427Mönchengladbachlast full day 10 OctNorth Rhine-Westphalia, Germany 42 US AQI
=1427KasselHesse, Germany 42 US AQI▼148
=1427Borkenlast full day 10 OctNorth Rhine-Westphalia, Germany 42 US AQI
=1427ThionvilleGrand Est, France 42 US AQI▼94
=1427ContesProvence-Alpes-Côte d'Azur, France 42 US AQI▼93
=1427BayonneNew Aquitaine, France 42 US AQI
=1427Žiar nad HronomBanská Bystrica Region, Slovakia 42 US AQI▼91
=1427SenicaTrnava Region, Slovakia 42 US AQI▼143
=1427RokycanyPlzeň Region, Czechia 42 US AQI
=1427Cosladalast full day 9 OctMadrid, Spain 42 US AQI▼140
=1427PollaCampania, Italy 42 US AQI
=1427Zagorje ob SaviMunicipality of Zagorje ob Savi, Slovenia 42 US AQI▼90
=1427PtujUrban Municipality of Ptuj, Slovenia 42 US AQI▼212
=1427Les AbymesGuadeloupe, Guadeloupe 42 US AQI▼210
=1427GarcíaNuevo León, Mexico 42 US AQI▼174
=1427DecaturAlabama, United States 42 US AQI▼89
=1427Baton RougeLouisiana, United States 42 US AQI▼86
=1427WheelersburgOhio, United States 42 US AQI▼33
=1427SpartanburgSouth Carolina, United States 42 US AQI▼83
=1427CorsicanaTexas, United States 42 US AQI▼81
=1427Missouri CityTexas, United States 42 US AQI▼79
=1427Elmwood ParkIllinois, United States 42 US AQI▼169
=1427Alta SierraCalifornia, United States 42 US AQI▼76
=1427CalexicoCalifornia, United States 42 US AQI▼167
=1427HuronCalifornia, United States 42 US AQI▼75
=1427ChilliwackBritish Columbia, Canada 42 US AQI▼165
=1427Kawachi-NaganoOsaka, Japan 42 US AQI▼28
=1427AmamiKagoshima, Japan 42 US AQI▼65
=1427IgaMie, Japan 42 US AQI▲20
=1427OgōriFukuoka, Japan 42 US AQI▼127
=1427YoshinogawaTokushima, Japan 42 US AQI▼25
=1479VolosThessaly, Greece 41 US AQI▼214
=1479HengchunTaiwan, Taiwan 41 US AQI▲16
=1479ZentsujichóKagawa, Japan 41 US AQI▼174
=1479SōjaOkayama, Japan 41 US AQI▼171
=1479ŌtaGunma, Japan 41 US AQI▼74
=1479NodaChiba, Japan 41 US AQI▼20
=1479NabariMie, Japan 41 US AQI▼19
=1479KōnosuSaitama, Japan 41 US AQI▼72
=1479KogaFukuoka, Japan 41 US AQI▼165
=1479KiryūGunma, Japan 41 US AQI▼109
=1479KawaguchiSaitama, Japan 41 US AQI▼108
=1479IgusaSaitama, Japan 41 US AQI▼69
=1479HijiOita, Japan 41 US AQI▼68
=1479AgeoSaitama, Japan 41 US AQI▼105
=1479KimitsuChiba, Japan 41 US AQI▼104
=1479GoshogawaraAomori, Japan 41 US AQI▲77
=1479SpijkenisseSouth Holland, The Netherlands 41 US AQI▼278
=1479VoitsbergStyria, Austria 41 US AQI▼157
=1479MödlingLower Austria, Austria 41 US AQI▼156
=1479EisenstadtBurgenland, Austria 41 US AQI▼155
=1479WillebroekFlanders, Belgium 41 US AQI▼205
=1479BeverenFlanders, Belgium 41 US AQI▼204

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).