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.

=1958CantonOhio, United States 36 US AQI▼124
=1958FillmoreCalifornia, United States 36 US AQI▼303
=1958KentWashington, United States 36 US AQI▼173
=1958KelownaBritish Columbia, Canada 36 US AQI▼172
=1958InzaiChiba, Japan 36 US AQI▼117
=1958HigashimurayamaTokyo, Japan 36 US AQI▼115
=1958NoboritoKanagawa, Japan 36 US AQI▼169
=1958YamanashiYamanashi, Japan 36 US AQI▼70
=2009OlsztynWarmia-Masuria, Poland 35 US AQI▼25
=2009RiversdaleWestern Cape, South Africa 35 US AQI
=2009T’aebaekGangwon-do, South Korea 35 US AQI▼255
=2009KosongGangwon-do, South Korea 35 US AQI▼217
=2009YukuhashiFukuoka, Japan 35 US AQI▼216
=2009YaitaTochigi, Japan 35 US AQI▼213
=2009UrayasuChiba, Japan 35 US AQI▼212
=2009TsurugaFukui, Japan 35 US AQI▼78
=2009ObamaFukui, Japan 35 US AQI▼161
=2009NagaokaNiigata, Japan 35 US AQI▼160
=2009KitahamaShiga, Japan 35 US AQI▼75
=2009KasukabeSaitama, Japan 35 US AQI▼159
=2009KameokaKyoto, Japan 35 US AQI▼419
=2009HannōSaitama, Japan 35 US AQI▼158
=2009HakuiIshikawa, Japan 35 US AQI▼207
=2009FukuchiyamaKyoto, Japan 35 US AQI▼157
=2009AyabeKyoto, Japan 35 US AQI▼156
=2009ShinjōYamagata, Japan 35 US AQI▼204
=2009ChibaChiba, Japan 35 US AQI▼152
=2009ArmidaleNew South Wales, Australia 35 US AQI▼295
=2009ZaventemFlanders, Belgium 35 US AQI▼243
=2009Neuenburg am RheinBaden-Wurttemberg, Germany 35 US AQI▼288
=2009Malchowlast full day 10 OctMecklenburg-Vorpommern, Germany 35 US AQI
=2009GießenHesse, Germany 35 US AQI▼104
=2009Frankfurt am MainHesse, Germany 35 US AQI▼103
=2009Eggenstein-LeopoldshafenBaden-Wurttemberg, Germany 35 US AQI▼285
=2009Bamberglast full day 10 OctBavaria, Germany 35 US AQI▼283
=2009Salon-de-ProvenceProvence-Alpes-Côte d'Azur, France 35 US AQI▼193
=2009ForbachGrand Est, France 35 US AQI
=2009BordeauxNew Aquitaine, France 35 US AQI▲79
=2009Žďár nad SázavouVysocina, Czechia 35 US AQI
=2009ChrastavaLiberec Region, Czechia 35 US AQI
=2009PalenciaCastille and León, Spain 35 US AQI
=2009Bonita SpringsFlorida, United States 35 US AQI▼191
=2009SpringfieldIllinois, United States 35 US AQI▼189
=2009FlatwoodsKentucky, United States 35 US AQI▼188
=2009JeffersontownKentucky, United States 35 US AQI▼137
=2009PrienLouisiana, United States 35 US AQI▼185
=2009ColumbiaMissouri, United States 35 US AQI▼233
=2009Kansas CityMissouri, United States 35 US AQI▼136
=2009PennsaukenNew Jersey, United States 35 US AQI▼93
=2009GreenvilleSouth Carolina, United States 35 US AQI▼92
=2009Huntingtonlast full day 10 OctWest Virginia, United States 35 US AQI▼180
=2009ChampaignIllinois, United States 35 US AQI▼135
=2009LincolnwoodIllinois, United States 35 US AQI▼42
=2009Columbia CityIndiana, United States 35 US AQI▼91
=2009KokomoIndiana, United States 35 US AQI▼176
=2009WarrenOhio, United States 35 US AQI▼133
=2009Rancho MurietaCalifornia, United States 35 US AQI▼132
=2009South San FranciscoCalifornia, United States 35 US AQI▼172
=2009TigardOregon, United States 35 US AQI▼170
=2009West Valley CityUtah, United States 35 US AQI▼225
=2009Drayton ValleyAlberta, Canada 35 US AQI▼129
=2009InashikiIbaraki, Japan 35 US AQI▼221
=2009KasugaFukuoka, Japan 35 US AQI▼169
=2009Minami-SōmaFukushima, Japan 35 US AQI▼125
=2009IrumaSaitama, Japan 35 US AQI▼124
=2009Minami-AlpsYamanashi, Japan 35 US AQI▼29
=2009YamatoKanagawa, Japan 35 US AQI▼122
=2068Gevgelijalast full day 10 OctGevgelija, North Macedonia 34 US AQI▼224
=2068GuanshanTaiwan, Taiwan 34 US AQI▼46
=2068UtsunomiyaTochigi, Japan 34 US AQI▼223
=2068TsubataIshikawa, Japan 34 US AQI▼222
=2068TokorozawaSaitama, Japan 34 US AQI▼176
=2068ShimadaShizuoka, Japan 34 US AQI▼136
=2068OnoFukui, Japan 34 US AQI▼174
=2068NumazuShizuoka, Japan 34 US AQI▼173
=2068NagatoYamaguchi, Japan 34 US AQI▼214
=2068Mount IsaQueensland, Australia 34 US AQI▼129
=2068ShiroishiMiyagi, Japan 34 US AQI▼170
=2068SakamotoMiyagi, Japan 34 US AQI▼213
=2068MoriokaIwate, Japan 34 US AQI▼169
=2068TuggeranongAustralian Capital Territory, Australia 34 US AQI▼356
=2068FunchalMadeira, Portugal 34 US AQI▼254
=2068SpekeEngland, United Kingdom 34 US AQI
=2068BournemouthEngland, United Kingdom 34 US AQI
=2068BrusselsBrussels Capital, Belgium 34 US AQI▼209
=2068Schwäbisch HallBaden-Wurttemberg, Germany 34 US AQI▼301
=2068ReutlingenBaden-Wurttemberg, Germany 34 US AQI▼300
=2068Ratingenlast full day 10 OctNorth Rhine-Westphalia, Germany 34 US AQI
=2068Lünenlast full day 10 OctNorth Rhine-Westphalia, Germany 34 US AQI
=2068LubnjowBrandenburg, Germany 34 US AQI▼389
=2068Limburg an der LahnHesse, Germany 34 US AQI▼119
=2068Halberstadtlast full day 10 OctSaxony-Anhalt, Germany 34 US AQI▼205
=2068Burg bei Magdeburglast full day 10 OctSaxony-Anhalt, Germany 34 US AQI
=2068BallinasloeConnacht, Ireland 34 US AQI
=2068CoulommiersÎle-de-France, France 34 US AQI▼204
=2068ArrasHauts-de-France, France 34 US AQI▼203
=2068Rio de JaneiroRio de Janeiro, Brazil 34 US AQI▼110
=2068Venice Gardenslast full day 11 OctFlorida, United States 34 US AQI▼199
=2068GainesvilleGeorgia, United States 34 US AQI▼109
=2068LeawoodKansas, United States 34 US AQI▼197

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).