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.

=1585HandaAichi, Japan 49 US AQI1.8 times the WHO guideline▼154
=1585GionHiroshima, Japan 49 US AQI1.8 times the WHO guideline▼153
=1585ChigasakiKanagawa, Japan 49 US AQI1.8 times the WHO guideline▼152
=1585AiharaKanagawa, Japan 49 US AQI1.8 times the WHO guideline▼151
=1585SeirōNiigata, Japan 49 US AQI1.8 times the WHO guideline▼80
=1585BredaNorth Brabant, The Netherlands 49 US AQI1.8 times the WHO guideline▼146
=1585ErtveldeFlanders, Belgium 49 US AQI1.8 times the WHO guideline▼204
=1585AntwerpFlanders, Belgium 49 US AQI1.8 times the WHO guideline▼203
=1585WiesbadenHesse, Germany 49 US AQI1.8 times the WHO guideline▼201
=1585Wesellast full day 10 OctNorth Rhine-Westphalia, Germany 49 US AQI1.8 times the WHO guideline▼281
=1585Völklingenlast full day 10 OctSaarland, Germany 49 US AQI1.8 times the WHO guideline▼140
=1585TitzNorth Rhine-Westphalia, Germany 49 US AQI1.8 times the WHO guideline▼316
=1585TauberbischofsheimBaden-Wurttemberg, Germany 49 US AQI1.8 times the WHO guideline▼139
=1585Saarbrückenlast full day 10 OctSaarland, Germany 49 US AQI1.8 times the WHO guideline▼200
=1585Lingenlast full day 10 OctLower Saxony, Germany 49 US AQI1.8 times the WHO guideline▼315
=1585Kempten (Allgäu)last full day 10 OctBavaria, Germany 49 US AQI1.8 times the WHO guideline▼238
=1585Kaldenkirchenlast full day 10 OctNorth Rhine-Westphalia, Germany 49 US AQI1.8 times the WHO guideline▼278
=1585DelmenhorstLower Saxony, Germany 49 US AQI1.8 times the WHO guideline
=1585Bamberglast full day 10 OctBavaria, Germany 49 US AQI1.8 times the WHO guideline▼135
=1585AalenBaden-Wurttemberg, Germany 49 US AQI1.8 times the WHO guideline▼195
=1585LuxembourgLuxembourg, Luxembourg 49 US AQI1.8 times the WHO guideline▼194
=1585TraleeMunster, Ireland 49 US AQI1.8 times the WHO guideline▼312
=1585RouenNormandy, France 49 US AQI1.8 times the WHO guideline▼134
=1585MarseilleProvence-Alpes-Côte d'Azur, France 49 US AQI1.8 times the WHO guideline▼75
=1585CannesProvence-Alpes-Côte d'Azur, France 49 US AQI1.8 times the WHO guideline▼310
=1585PilsenPlzeň Region, Czechia 49 US AQI1.8 times the WHO guideline
=1585ChrastavaLiberec Region, Czechia 49 US AQI1.8 times the WHO guideline
=1585OriaBasque Country, Spain 49 US AQI1.8 times the WHO guideline
=1585PollaCampania, Italy 49 US AQI1.8 times the WHO guideline
=1585KourouGuyane, French Guiana 49 US AQI1.8 times the WHO guideline▼190
=1585GadsdenAlabama, United States 49 US AQI1.8 times the WHO guideline▼128
=1585JeffersonvilleIndiana, United States 49 US AQI1.8 times the WHO guideline▼127
=1585HattiesburgMississippi, United States 49 US AQI1.8 times the WHO guideline▼126
=1585CincinnatiOhio, United States 49 US AQI1.8 times the WHO guideline▼125
=1585Oklahoma CityOklahoma, United States 49 US AQI1.8 times the WHO guideline▼124
=1585North CharlestonSouth Carolina, United States 49 US AQI1.8 times the WHO guideline▼123
=1585DentonTexas, United States 49 US AQI1.8 times the WHO guideline▼122
=1585Mission BendTexas, United States 49 US AQI1.8 times the WHO guideline▼121
=1585WarrenvilleIllinois, United States 49 US AQI1.8 times the WHO guideline▼120
=1585EastpointeMichigan, United States 49 US AQI1.8 times the WHO guideline▼119
=1585AkronOhio, United States 49 US AQI1.8 times the WHO guideline▼118
=1585Warrensville HeightsOhio, United States 49 US AQI1.8 times the WHO guideline▼117
=1585WilkinsburgPennsylvania, United States 49 US AQI1.8 times the WHO guideline▼116
=1585BoiseIdaho, United States 49 US AQI1.8 times the WHO guideline▼115
=1585MillcreekUtah, United States 49 US AQI1.8 times the WHO guideline▼176
=1585EstevanSaskatchewan, Canada 49 US AQI1.8 times the WHO guideline▼114
=1585Fort Saskatchewanlast full day 28 SeptAlberta, Canada 49 US AQI1.8 times the WHO guideline▼113
=1585HamiltonOntario, Canada 49 US AQI1.8 times the WHO guideline▼112
=1585Miltonlast full day 9 OctOntario, Canada 49 US AQI1.8 times the WHO guideline▼111
=1585Midwaylast full day 6 OctFlorida, United States 49 US AQI1.8 times the WHO guideline▼172
=1585AyaseKanagawa, Japan 49 US AQI1.8 times the WHO guideline▼109
=1585FuefukiYamanashi, Japan 49 US AQI1.8 times the WHO guideline▼108
=1653YoriiSaitama, Japan 48 US AQI1.7 times the WHO guideline▼174
=1653YokotaTokyo, Japan 48 US AQI1.7 times the WHO guideline▼173
=1653YamaguchiYamaguchi, Japan 48 US AQI1.7 times the WHO guideline▼172
=1653YaeHiroshima, Japan 48 US AQI1.7 times the WHO guideline▼171
=1653Uozulast full day 22 SeptToyama, Japan 48 US AQI1.7 times the WHO guideline▼170
=1653UjiKyoto, Japan 48 US AQI1.7 times the WHO guideline▼169
=1653TokyoTokyo, Japan 48 US AQI1.7 times the WHO guideline▼168
=1653TakayamaGifu, Japan 48 US AQI1.7 times the WHO guideline▼167
=1653ŌmuraNagasaki, Japan 48 US AQI1.7 times the WHO guideline▼164
=1653NabariMie, Japan 48 US AQI1.7 times the WHO guideline▼163
=1653MiyazakiMiyazaki, Japan 48 US AQI1.7 times the WHO guideline▼162
=1653KudamatsuYamaguchi, Japan 48 US AQI1.7 times the WHO guideline▼161
=1653KōnosuSaitama, Japan 48 US AQI1.7 times the WHO guideline▼106
=1653Kodamachō-kodamaminamiSaitama, Japan 48 US AQI1.7 times the WHO guideline▼160
=1653Kazolast full day 6 OctSaitama, Japan 48 US AQI1.7 times the WHO guideline▼158
=1653KawatanaNagasaki, Japan 48 US AQI1.7 times the WHO guideline▼157
=1653KawaguchiSaitama, Japan 48 US AQI1.7 times the WHO guideline▼156
=1653Kashihara-shiNara, Japan 48 US AQI1.7 times the WHO guideline▼155
=1653KameyamaMie, Japan 48 US AQI1.7 times the WHO guideline▼154
=1653KameokaKyoto, Japan 48 US AQI1.7 times the WHO guideline▼225
=1653Izumolast full day 11 OctShimane, Japan 48 US AQI1.7 times the WHO guideline▼153
=1653IseMie, Japan 48 US AQI1.7 times the WHO guideline▼152
=1653HitoyoshiKumamoto, Japan 48 US AQI1.7 times the WHO guideline▼151
=1653HikoneShiga, Japan 48 US AQI1.7 times the WHO guideline▼150
=1653AshikagaTochigi, Japan 48 US AQI1.7 times the WHO guideline▼149
=1653JaénAndalusia, Spain 48 US AQI1.7 times the WHO guideline
=1653MenenFlanders, Belgium 48 US AQI1.7 times the WHO guideline▼213
=1653GrimbergenFlanders, Belgium 48 US AQI1.7 times the WHO guideline▼212
=1653BeverenFlanders, Belgium 48 US AQI1.7 times the WHO guideline▼147
=1653Wilhelmshavenlast full day 10 OctLower Saxony, Germany 48 US AQI1.7 times the WHO guideline▼312
=1653Rüsselsheim am MainHesse, Germany 48 US AQI1.7 times the WHO guideline▼267
=1653Lauenburglast full day 10 OctSchleswig-Holstein, Germany 48 US AQI1.7 times the WHO guideline▼381
=1653Kölnlast full day 10 OctNorth Rhine-Westphalia, Germany 48 US AQI1.7 times the WHO guideline▼307
=1653GießenHesse, Germany 48 US AQI1.7 times the WHO guideline▼303
=1653DarmstadtHesse, Germany 48 US AQI1.7 times the WHO guideline▼265
=1653Barthlast full day 10 OctMecklenburg-Vorpommern, Germany 48 US AQI1.7 times the WHO guideline
=1653MontbéliardBourgogne-Franche-Comté, France 48 US AQI1.7 times the WHO guideline▼46
=1653MarignaneProvence-Alpes-Côte d'Azur, France 48 US AQI1.7 times the WHO guideline▼201
=1653LyonAuvergne-Rhône-Alpes, France 48 US AQI1.7 times the WHO guideline▼343
=1653GapProvence-Alpes-Côte d'Azur, France 48 US AQI1.7 times the WHO guideline
=1653Baume-les-DamesBourgogne-Franche-Comté, France 48 US AQI1.7 times the WHO guideline
=1653ArlesProvence-Alpes-Côte d'Azur, France 48 US AQI1.7 times the WHO guideline▼259
=1653Žďár nad SázavouVysocina, Czechia 48 US AQI1.7 times the WHO guideline
=1653SokolovCarlsbad Region, Czechia 48 US AQI1.7 times the WHO guideline
=1653ZaragozaAragon, Spain 48 US AQI1.7 times the WHO guideline
=1653KoperUrban Municipality of Koper, Slovenia 48 US AQI1.7 times the WHO guideline▲95
=1653Ludweiler-Warndtlast full day 10 OctSaarland, Germany 48 US AQI1.7 times the WHO guideline▼197
=1653EvansvilleIndiana, United States 48 US AQI1.7 times the WHO guideline▼138

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).