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.

=1769DecaturIllinois, United States 38 US AQI▼165
=1769AthensTennessee, United States 38 US AQI▼80
=1769WaterlooIowa, United States 38 US AQI▼120
=1769BeecherMichigan, United States 38 US AQI▼118
=1769WestervilleOhio, United States 38 US AQI▼79
=1769BanningCalifornia, United States 38 US AQI▼191
=1769Palo AltoCalifornia, United States 38 US AQI▲469
=1769TemeculaCalifornia, United States 38 US AQI▼233
=1769JōsōIbaraki, Japan 38 US AQI▼109
=1769La Crescenta-MontroseCalifornia, United States 38 US AQI▼230
=1769BuzenFukuoka, Japan 38 US AQI▼155
=1769JōyōKyoto, Japan 38 US AQI▼19
=1769Jordan SpringsNew South Wales, Australia 38 US AQI▼541
=1814YoriiSaitama, Japan 37 US AQI▼116
=1814YokohamaKanagawa, Japan 37 US AQI▼151
=1814TakarazukaHyōgo, Japan 37 US AQI▼150
=1814SabaeFukui, Japan 37 US AQI▼111
=1814OnoHyōgo, Japan 37 US AQI▼149
=1814NakanojōGunma, Japan 37 US AQI▼110
=1814KawagoeSaitama, Japan 37 US AQI▼146
=1814KashiwaChiba, Japan 37 US AQI▼106
=1814FurukawamenNagasaki, Japan 37 US AQI▼186
=1814IchiharaChiba, Japan 37 US AQI▼103
=1814SydneyNew South Wales, Australia 37 US AQI▼257
=1814LeedsEngland, United Kingdom 37 US AQI
=1814ZürichZurich, Switzerland 37 US AQI▼178
=1814LuganoTicino, Switzerland 37 US AQI▼302
=1814Velsen-ZuidNorth Holland, The Netherlands 37 US AQI▼141
=1814MaassluisSouth Holland, The Netherlands 37 US AQI▼255
=1814StuttgartBaden-Wurttemberg, Germany 37 US AQI▼216
=1814Schwertelast full day 10 OctNorth Rhine-Westphalia, Germany 37 US AQI
=1814Merseburglast full day 10 OctSaxony-Anhalt, Germany 37 US AQI▼137
=1814Leverkusenlast full day 10 OctNorth Rhine-Westphalia, Germany 37 US AQI
=1814LampertheimHesse, Germany 37 US AQI▼249
=1814Erfurtlast full day 10 OctThuringia, Germany 37 US AQI▼247
=1814FréjusProvence-Alpes-Côte d'Azur, France 37 US AQI
=1814Durbanvillelast full day 8 OctWestern Cape, South Africa 37 US AQI▼172
=1814Presidente PrudenteSão Paulo, Brazil 37 US AQI▼171
=1814Le LamentinMartinique, Martinique 37 US AQI▼79
=1814PaducahKentucky, United States 37 US AQI▼132
=1814Ponte Vedra BeachFlorida, United States 37 US AQI▼168
=1814ElizabethtownKentucky, United States 37 US AQI▼129
=1814MiddlesboroKentucky, United States 37 US AQI▼78
=1814OwensboroKentucky, United States 37 US AQI▼167
=1814Winston-SalemNorth Carolina, United States 37 US AQI▼127
=1814DaytonOhio, United States 37 US AQI▼75
=1814DentsvilleSouth Carolina, United States 37 US AQI▼126
=1814KalamazooMichigan, United States 37 US AQI▼72
=1814Buffalolast full day 11 OctNew York, United States 37 US AQI▼162
=1814West MifflinPennsylvania, United States 37 US AQI▼160
=1814Show LowArizona, United States 37 US AQI▼158
=1814SalinasCalifornia, United States 37 US AQI▼205
=1814Santa CruzCalifornia, United States 37 US AQI▼121
=1814RentonWashington, United States 37 US AQI▼155
=1814AbbotsfordBritish Columbia, Canada 37 US AQI▼203
=1814KodairaTokyo, Japan 37 US AQI▼117
=1814KamagayaChiba, Japan 37 US AQI▼63
=1814LemwerderLower Saxony, Germany 37 US AQI▼228
=1859RostusaMavrovo and Rostuša, North Macedonia 37 US AQI▼241
=1859KofuYamanashi, Japan 37 US AQI▼152
=1859Kazolast full day 6 OctSaitama, Japan 37 US AQI▼235
=1859Izumolast full day 11 OctShimane, Japan 37 US AQI▼233
=1859IidaNagano, Japan 37 US AQI▼59
=1859IbiGifu, Japan 37 US AQI▼99
=1859HirakataOsaka, Japan 37 US AQI▼150
=1859AsahikawaHokkaido, Japan 37 US AQI▼95
=1859MaryboroughQueensland, Australia 37 US AQI▼94
=1859CártamaAndalusia, Spain 37 US AQI
=1859NorthamptonEngland, United Kingdom 37 US AQI
=1859CardiffWales, United Kingdom 37 US AQI
=1859MusselkanaalGroningen, The Netherlands 37 US AQI
=1859LienzTyrol, Austria 37 US AQI▼143
=1859Wolfsburglast full day 10 OctLower Saxony, Germany 37 US AQI▼184
=1859RitterhudeLower Saxony, Germany 37 US AQI▼183
=1859Neuruppinlast full day 11 OctBrandenburg, Germany 37 US AQI▼295
=1859Mainzlast full day 10 OctRheinland-Pfalz, Germany 37 US AQI▼260
=1859Kleinmachnowlast full day 10 OctBrandenburg, Germany 37 US AQI
=1859KarlsruheBaden-Wurttemberg, Germany 37 US AQI▼259
=1859Fürstenberglast full day 10 OctBrandenburg, Germany 37 US AQI
=1859Bad Frankenhausenlast full day 10 OctThuringia, Germany 37 US AQI▼291
=1859NîmesOccitanie, France 37 US AQI▼220
=1859LunévilleGrand Est, France 37 US AQI▼131
=1859BrestBrittany, France 37 US AQI▼129
=1859BeauvaisHauts-de-France, France 37 US AQI▼219
=1859KomárnoNitra Region, Slovakia 37 US AQI▼258
=1859Le RobertMartinique, Martinique 37 US AQI▼215
=1859Fort-de-FranceMartinique, Martinique 37 US AQI▼331
=1859AlbanyGeorgia, United States 37 US AQI▲11
=1859JasperIndiana, United States 37 US AQI▼175
=1859ChalmetteLouisiana, United States 37 US AQI▼122
=1859Saint JosephMissouri, United States 37 US AQI▼173
=1859AshevilleNorth Carolina, United States 37 US AQI▼121
=1859MaryvilleTennessee, United States 37 US AQI▼31
=1859DoltonIllinois, United States 37 US AQI▼28
=1859ClevelandOhio, United States 37 US AQI▼116
=1859LancasterPennsylvania, United States 37 US AQI▼79
=1859GilroyCalifornia, United States 37 US AQI▼202
=1859TracyCalifornia, United States 37 US AQI▼76
=1859RenoNevada, United States 37 US AQI▼165
=1859SandpointIdaho, United States 37 US AQI▼201

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).