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.

=1171Hannoverlast full day 10 OctLower Saxony, Germany 52 US AQI2.0 times the WHO guideline▼241
=1171Hagenlast full day 10 OctNorth Rhine-Westphalia, Germany 52 US AQI2.0 times the WHO guideline▼222
=1171Duisburglast full day 10 OctNorth Rhine-Westphalia, Germany 52 US AQI2.0 times the WHO guideline▼191
=1171Dattelnlast full day 10 OctNorth Rhine-Westphalia, Germany 52 US AQI2.0 times the WHO guideline▼239
=1171Bad BelzigBrandenburg, Germany 52 US AQI2.0 times the WHO guideline▼189
=1171RognacProvence-Alpes-Côte d'Azur, France 52 US AQI2.0 times the WHO guideline
=1171BordeauxNew Aquitaine, France 52 US AQI2.0 times the WHO guideline▲222
=1171GijónAsturias, Spain 52 US AQI2.0 times the WHO guideline
=1171DurangoBasque Country, Spain 52 US AQI2.0 times the WHO guideline
=1171NorwoodOhio, United States 52 US AQI2.0 times the WHO guideline▼102
=1171Bay CityMichigan, United States 52 US AQI2.0 times the WHO guideline▼101
=1171CantonOhio, United States 52 US AQI2.0 times the WHO guideline▼100
=1171LimaOhio, United States 52 US AQI2.0 times the WHO guideline▼99
=1171Santa MonicaCalifornia, United States 52 US AQI2.0 times the WHO guideline▼98
=1171CalgaryAlberta, Canada 52 US AQI2.0 times the WHO guideline▼97
=1171RangioraCanterbury, New Zealand 52 US AQI2.0 times the WHO guideline▼128
=1217RigaRiga, Latvia 52 US AQI1.9 times the WHO guideline▼171
=1217YilanTaiwan, Taiwan 52 US AQI1.9 times the WHO guideline▼115
=1217TokonameAichi, Japan 52 US AQI1.9 times the WHO guideline▼142
=1217TokiGifu, Japan 52 US AQI1.9 times the WHO guideline▼141
=1217TagawaFukuoka, Japan 52 US AQI1.9 times the WHO guideline▼140
=1217ShimonosekiYamaguchi, Japan 52 US AQI1.9 times the WHO guideline▼139
=1217ShibataNiigata, Japan 52 US AQI1.9 times the WHO guideline▼138
=1217KurayoshiTottori, Japan 52 US AQI1.9 times the WHO guideline▼137
=1217KikuchiKumamoto, Japan 52 US AQI1.9 times the WHO guideline▼135
=1217IkedachōTokushima, Japan 52 US AQI1.9 times the WHO guideline▼134
=1217IizukaFukuoka, Japan 52 US AQI1.9 times the WHO guideline▼108
=1217HōryūjiNara, Japan 52 US AQI1.9 times the WHO guideline▼133
=1217Fukui-shiFukui, Japan 52 US AQI1.9 times the WHO guideline▼131
=1217MinawaKanagawa, Japan 52 US AQI1.9 times the WHO guideline▼130
=1217NagaiYamagata, Japan 52 US AQI1.9 times the WHO guideline▼129
=1217CandelariaCanary Islands, Spain 52 US AQI1.9 times the WHO guideline
=1217Velsen-ZuidNorth Holland, The Netherlands 52 US AQI1.9 times the WHO guideline▼249
=1217ViennaVienna, Austria 52 US AQI1.9 times the WHO guideline▼62
=1217Wernigerodelast full day 10 OctSaxony-Anhalt, Germany 52 US AQI1.9 times the WHO guideline▼271
=1217SulzbachHesse, Germany 52 US AQI1.9 times the WHO guideline▼190
=1217Oberhausenlast full day 10 OctNorth Rhine-Westphalia, Germany 52 US AQI1.9 times the WHO guideline▼243
=1217Norderneylast full day 10 OctLower Saxony, Germany 52 US AQI1.9 times the WHO guideline▼242
=1217Neuruppinlast full day 11 OctBrandenburg, Germany 52 US AQI1.9 times the WHO guideline▼186
=1217Fürstenberglast full day 10 OctBrandenburg, Germany 52 US AQI1.9 times the WHO guideline▼373
=1217Essenlast full day 10 OctNorth Rhine-Westphalia, Germany 52 US AQI1.9 times the WHO guideline▼205
=1217Erfurtlast full day 10 OctThuringia, Germany 52 US AQI1.9 times the WHO guideline▼238
=1217Emdenlast full day 10 OctLower Saxony, Germany 52 US AQI1.9 times the WHO guideline▼266
=1217Dillingenlast full day 10 OctSaarland, Germany 52 US AQI1.9 times the WHO guideline▼204
=1217Braunschweiglast full day 10 OctLower Saxony, Germany 52 US AQI1.9 times the WHO guideline▼236
=1217ValenciennesHauts-de-France, France 52 US AQI1.9 times the WHO guideline▼234
=1217ThionvilleGrand Est, France 52 US AQI1.9 times the WHO guideline▼124
=1217NancyGrand Est, France 52 US AQI1.9 times the WHO guideline▼152
=1217Žiar nad HronomBanská Bystrica Region, Slovakia 52 US AQI1.9 times the WHO guideline
=1217TrbovljeMunicipality of Trbovlje, Slovenia 52 US AQI1.9 times the WHO guideline▲238
=1217Granite CityIllinois, United States 52 US AQI1.9 times the WHO guideline▼121
=1217Texarkanalast full day 11 OctTexas, United States 52 US AQI1.9 times the WHO guideline▼120
=1217ChicagoIllinois, United States 52 US AQI1.9 times the WHO guideline▼118
=1217KalamazooMichigan, United States 52 US AQI1.9 times the WHO guideline▼117
=1217LebanonPennsylvania, United States 52 US AQI1.9 times the WHO guideline▼116
=1217InglewoodCalifornia, United States 52 US AQI1.9 times the WHO guideline
=1217ThrakomakedónesAttica, Greece 52 US AQI1.9 times the WHO guideline
=1258YokkaichiMie, Japan 52 US AQI1.9 times the WHO guideline▼155
=1258HonmachiKumamoto, Japan 52 US AQI1.9 times the WHO guideline▼116
=1258SumotoHyōgo, Japan 52 US AQI1.9 times the WHO guideline▼153
=1258SagaSaga, Japan 52 US AQI1.9 times the WHO guideline▼152
=1258OsakaOsaka, Japan 52 US AQI1.9 times the WHO guideline▼151
=1258NishiwakiHyōgo, Japan 52 US AQI1.9 times the WHO guideline▼150
=1258HiroshimaHiroshima, Japan 52 US AQI1.9 times the WHO guideline▼148
=1258Himimachilast full day 22 SeptToyama, Japan 52 US AQI1.9 times the WHO guideline▼147
=1258GyōdaSaitama, Japan 52 US AQI1.9 times the WHO guideline▼146
=1258ThièsThies, Senegal 52 US AQI1.9 times the WHO guideline▲120
=1258WaalreNorth Brabant, The Netherlands 52 US AQI1.9 times the WHO guideline▼169
=1258TilburgNorth Brabant, The Netherlands 52 US AQI1.9 times the WHO guideline▼145
=1258RotterdamSouth Holland, The Netherlands 52 US AQI1.9 times the WHO guideline▼142
=1258SchwazTyrol, Austria 52 US AQI1.9 times the WHO guideline▼102
=1258Wismarlast full day 10 OctMecklenburg-Vorpommern, Germany 52 US AQI1.9 times the WHO guideline▼417
=1258Walsrodelast full day 10 OctLower Saxony, Germany 52 US AQI1.9 times the WHO guideline▼249
=1258Stralsundlast full day 10 OctMecklenburg-Vorpommern, Germany 52 US AQI1.9 times the WHO guideline▼286
=1258Schwäbisch HallBaden-Wurttemberg, Germany 52 US AQI1.9 times the WHO guideline▼168
=1258ReutlingenBaden-Wurttemberg, Germany 52 US AQI1.9 times the WHO guideline▼136
=1258Jenalast full day 10 OctThuringia, Germany 52 US AQI1.9 times the WHO guideline▼226
=1258Hildesheimlast full day 10 OctLower Saxony, Germany 52 US AQI1.9 times the WHO guideline▼280
=1258MulhouseGrand Est, France 52 US AQI1.9 times the WHO guideline▼164
=1258Boulogne-sur-MerHauts-de-France, France 52 US AQI1.9 times the WHO guideline▼192
=1258Laudio / LlodioBasque Country, Spain 52 US AQI1.9 times the WHO guideline
=1258DouglasGeorgia, United States 52 US AQI1.9 times the WHO guideline▼129
=1258Warner RobinsGeorgia, United States 52 US AQI1.9 times the WHO guideline▼96
=1258Timberwood ParkTexas, United States 52 US AQI1.9 times the WHO guideline▼160
=1258Wells BranchTexas, United States 52 US AQI1.9 times the WHO guideline▼128
=1258Beaver FallsPennsylvania, United States 52 US AQI1.9 times the WHO guideline▼127
=1258WaukeshaWisconsin, United States 52 US AQI1.9 times the WHO guideline▼126
=1258CalexicoCalifornia, United States 52 US AQI1.9 times the WHO guideline▼125
=1258MaderaCalifornia, United States 52 US AQI1.9 times the WHO guideline▼124
=1258San DiegoCalifornia, United States 52 US AQI1.9 times the WHO guideline▼123
=1258SarniaOntario, Canada 52 US AQI1.9 times the WHO guideline▼121
=1258Imizulast full day 22 SeptToyama, Japan 52 US AQI1.9 times the WHO guideline▼120
=1258JōetsuNiigata, Japan 52 US AQI1.9 times the WHO guideline▼119
=1258MatsusakaMie, Japan 52 US AQI1.9 times the WHO guideline▼118
=1295AkashiHyōgo, Japan 52 US AQI1.9 times the WHO guideline▼154
=1295UtoKumamoto, Japan 52 US AQI1.9 times the WHO guideline▼152
=1295TogitsuNagasaki, Japan 52 US AQI1.9 times the WHO guideline▼119
=1295TakahashiOkayama, Japan 52 US AQI1.9 times the WHO guideline▼191
=1295OnoHyōgo, Japan 52 US AQI1.9 times the WHO guideline▼151
=1295MiharaHiroshima, Japan 52 US AQI1.9 times the WHO guideline▼150

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).