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.

=1295KishiwadaOsaka, Japan 52 US AQI1.9 times the WHO guideline▼149
=1295KashimaSaga, Japan 52 US AQI1.9 times the WHO guideline▼148
=1295Kanzakimachi-kanzakiSaga, Japan 52 US AQI1.9 times the WHO guideline▼147
=1295HekinanAichi, Japan 52 US AQI1.9 times the WHO guideline▼210
=1295AnanTokushima, Japan 52 US AQI1.9 times the WHO guideline▼146
=1295SukayamaChiba, Japan 52 US AQI1.9 times the WHO guideline▼144
=1295ArrecifeCanary Islands, Spain 52 US AQI1.9 times the WHO guideline
=1295ZwanenburgNorth Holland, The Netherlands 52 US AQI1.9 times the WHO guideline▼143
=1295RidderkerkSouth Holland, The Netherlands 52 US AQI1.9 times the WHO guideline▼270
=1295Sankt PöltenLower Austria, Austria 52 US AQI1.9 times the WHO guideline▼70
=1295PerchtoldsdorfLower Austria, Austria 52 US AQI1.9 times the WHO guideline▼177
=1295Groß-EnzersdorfLower Austria, Austria 52 US AQI1.9 times the WHO guideline▼68
=1295ZelzateFlanders, Belgium 52 US AQI1.9 times the WHO guideline▼174
=1295Wolfsburglast full day 10 OctLower Saxony, Germany 52 US AQI1.9 times the WHO guideline▼287
=1295Neuenburg am RheinBaden-Wurttemberg, Germany 52 US AQI1.9 times the WHO guideline▼137
=1295KehlBaden-Wurttemberg, Germany 52 US AQI1.9 times the WHO guideline▼231
=1295Bützowlast full day 10 OctMecklenburg-Vorpommern, Germany 52 US AQI1.9 times the WHO guideline▼261
=1295EdenderryLeinster, Ireland 52 US AQI1.9 times the WHO guideline
=1295FréjusProvence-Alpes-Côte d'Azur, France 52 US AQI1.9 times the WHO guideline
=1295ItaquaquecetubaSão Paulo, Brazil 52 US AQI1.9 times the WHO guideline▼135
=1295TallahasseeFlorida, United States 52 US AQI1.9 times the WHO guideline▼134
=1295IndianapolisIndiana, United States 52 US AQI1.9 times the WHO guideline▼132
=1295HelotesTexas, United States 52 US AQI1.9 times the WHO guideline▼131
=1295Lacy-LakeviewTexas, United States 52 US AQI1.9 times the WHO guideline▼130
=1295NapervilleIllinois, United States 52 US AQI1.9 times the WHO guideline▼129
=1295Port HuronMichigan, United States 52 US AQI1.9 times the WHO guideline▼128
=1295WarrenOhio, United States 52 US AQI1.9 times the WHO guideline▼126
=1295HarrisburgPennsylvania, United States 52 US AQI1.9 times the WHO guideline▼125
=1295New HollandPennsylvania, United States 52 US AQI1.9 times the WHO guideline▼124
=1295TakuSaga, Japan 52 US AQI1.9 times the WHO guideline▼123
=1331TsuyamaOkayama, Japan 52 US AQI1.9 times the WHO guideline▼158
=1331TonoshōKagawa, Japan 52 US AQI1.9 times the WHO guideline▼157
=1331TomiokaGunma, Japan 52 US AQI1.9 times the WHO guideline▼156
=1331TakeoSaga, Japan 52 US AQI1.9 times the WHO guideline▼121
=1331Takaokalast full day 22 SeptToyama, Japan 52 US AQI1.9 times the WHO guideline▼154
=1331Narutochō-mitsuishiTokushima, Japan 52 US AQI1.9 times the WHO guideline▼153
=1331MinamirinkanKanagawa, Japan 52 US AQI1.9 times the WHO guideline▼152
=1331KashiwaraNara, Japan 52 US AQI1.9 times the WHO guideline▼151
=1331KariyaHyōgo, Japan 52 US AQI1.9 times the WHO guideline▼181
=1331AioiHyōgo, Japan 52 US AQI1.9 times the WHO guideline▼150
=1331AsakaSaitama, Japan 52 US AQI1.9 times the WHO guideline▼110
=1331La Línea de la ConcepciónAndalusia, Spain 52 US AQI1.9 times the WHO guideline
=1331Cartagenalast full day 11 OctMurcia, Spain 52 US AQI1.9 times the WHO guideline
=1331BarneveldGelderland, The Netherlands 52 US AQI1.9 times the WHO guideline▼149
=1331Otterndorflast full day 10 OctLower Saxony, Germany 52 US AQI1.9 times the WHO guideline▼303
=1331Osnabrücklast full day 10 OctLower Saxony, Germany 52 US AQI1.9 times the WHO guideline▼302
=1331Mainzlast full day 10 OctRheinland-Pfalz, Germany 52 US AQI1.9 times the WHO guideline▼208
=1331Koblenzlast full day 10 OctRheinland-Pfalz, Germany 52 US AQI1.9 times the WHO guideline▼206
=1331Arzberglast full day 10 OctBavaria, Germany 52 US AQI1.9 times the WHO guideline▼144
=1331LilleHauts-de-France, France 52 US AQI1.9 times the WHO guideline▼172
=1331BéthuneHauts-de-France, France 52 US AQI1.9 times the WHO guideline▼142
=1331Cubatãolast full day 4 OctSão Paulo, Brazil 52 US AQI1.9 times the WHO guideline▼141
=1331CotaCundinamarca, Colombia 52 US AQI1.9 times the WHO guideline
=1331AlbanyGeorgia, United States 52 US AQI1.9 times the WHO guideline▼140
=1331ColumbusOhio, United States 52 US AQI1.9 times the WHO guideline▼139
=1331WaterlooIowa, United States 52 US AQI1.9 times the WHO guideline▼138
=1331RockfordIllinois, United States 52 US AQI1.9 times the WHO guideline▼137
=1331HammondIndiana, United States 52 US AQI1.9 times the WHO guideline▼136
=1331SouthfieldMichigan, United States 52 US AQI1.9 times the WHO guideline▼135
=1331DuluthMinnesota, United States 52 US AQI1.9 times the WHO guideline▼163
=1331MedinaOhio, United States 52 US AQI1.9 times the WHO guideline▼134
=1331Long BeachCalifornia, United States 52 US AQI1.9 times the WHO guideline▼132
=1331MercedCalifornia, United States 52 US AQI1.9 times the WHO guideline▼131
=1331SocorroTexas, United States 52 US AQI1.9 times the WHO guideline▼195
=1331LondonOntario, Canada 52 US AQI1.9 times the WHO guideline▼129
=1331Kennedy TownshipPennsylvania, United States 52 US AQI1.9 times the WHO guideline▼127
=1331OgōriFukuoka, Japan 52 US AQI1.9 times the WHO guideline▼126
=1331TōkaiAichi, Japan 52 US AQI1.9 times the WHO guideline▼125
=1331NantanKyoto, Japan 52 US AQI1.9 times the WHO guideline▼124
=1370SevlievoGabrovo, Bulgaria 51 US AQI1.9 times the WHO guideline▼162
=1370UbeYamaguchi, Japan 51 US AQI1.9 times the WHO guideline▼161
=1370TakeharaHiroshima, Japan 51 US AQI1.9 times the WHO guideline▼159
=1370SakaiOsaka, Japan 51 US AQI1.9 times the WHO guideline▼158
=1370OkazakiAichi, Japan 51 US AQI1.9 times the WHO guideline▼118
=1370OkayamaOkayama, Japan 51 US AQI1.9 times the WHO guideline▼157
=1370ŌitaOita, Japan 51 US AQI1.9 times the WHO guideline▼117
=1370NōgataFukuoka, Japan 51 US AQI1.9 times the WHO guideline▼156
=1370NishioAichi, Japan 51 US AQI1.9 times the WHO guideline▼155
=1370KyotoKyoto, Japan 51 US AQI1.9 times the WHO guideline▼154
=1370KogaFukuoka, Japan 51 US AQI1.9 times the WHO guideline▼113
=1370KainanWakayama, Japan 51 US AQI1.9 times the WHO guideline▼153
=1370IwashitaKumamoto, Japan 51 US AQI1.9 times the WHO guideline▼152
=1370IwakuniYamaguchi, Japan 51 US AQI1.9 times the WHO guideline▼151
=1370HagiYamaguchi, Japan 51 US AQI1.9 times the WHO guideline▼110
=1370HachiōjiTokyo, Japan 51 US AQI1.9 times the WHO guideline▼150
=1370FukuroiShizuoka, Japan 51 US AQI1.9 times the WHO guideline▼109
=1370LopikUtrecht, The Netherlands 51 US AQI1.9 times the WHO guideline▼217
=1370MödlingLower Austria, Austria 51 US AQI1.9 times the WHO guideline▼144
=1370WieslochBaden-Wurttemberg, Germany 51 US AQI1.9 times the WHO guideline▼187
=1370Malchowlast full day 10 OctMecklenburg-Vorpommern, Germany 51 US AQI1.9 times the WHO guideline▼441
=1370Bielefeldlast full day 10 OctNorth Rhine-Westphalia, Germany 51 US AQI1.9 times the WHO guideline▼278
=1370Aschaffenburglast full day 10 OctBavaria, Germany 51 US AQI1.9 times the WHO guideline▼137
=1370Romans-sur-IsèreAuvergne-Rhône-Alpes, France 51 US AQI1.9 times the WHO guideline▼96
=1370DenainHauts-de-France, France 51 US AQI1.9 times the WHO guideline▼182
=1370HandlováTrenčín Region, Slovakia 51 US AQI1.9 times the WHO guideline
=1370MadridMadrid, Spain 51 US AQI1.9 times the WHO guideline
=1370BilbaoBasque Country, Spain 51 US AQI1.9 times the WHO guideline
=1370São José dos Camposlast full day 8 OctSão Paulo, Brazil 51 US AQI1.9 times the WHO guideline▼134
=1370MonroeLouisiana, United States 51 US AQI1.9 times the WHO guideline▼133
=1370McAlesterOklahoma, United States 51 US AQI1.9 times the WHO guideline▼132

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).