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.

=1479Weimarlast full day 10 OctThuringia, Germany 41 US AQI▼268
=1479UlmBaden-Wurttemberg, Germany 41 US AQI▼267
=1479Frankfurt (Oder)Brandenburg, Germany 41 US AQI▼232
=1479Düsseldorflast full day 10 OctNorth Rhine-Westphalia, Germany 41 US AQI
=1479CalaisHauts-de-France, France 41 US AQI▼198
=1479Boulogne-sur-MerHauts-de-France, France 41 US AQI▼197
=1479BéthuneHauts-de-France, France 41 US AQI▼196
=1479AnnecyAuvergne-Rhône-Alpes, France 41 US AQI
=1479Kuils RiverWestern Cape, South Africa 41 US AQI▼263
=1479Taubatélast full day 8 OctSão Paulo, Brazil 41 US AQI▼48
=1479New OrleansLouisiana, United States 41 US AQI▲1
=1479LawtonOklahoma, United States 41 US AQI▼136
=1479Jacksonlast full day 8 OctTennessee, United States 41 US AQI▼184
=1479KnoxvilleTennessee, United States 41 US AQI▼45
=1479Cedar ParkTexas, United States 41 US AQI▼134
=1479Blue IslandIllinois, United States 41 US AQI▼43
=1479Oak LawnIllinois, United States 41 US AQI▼41
=1479SkokieIllinois, United States 41 US AQI▼84
=1479OrcuttCalifornia, United States 41 US AQI▼183
=1479South Lake TahoeCalifornia, United States 41 US AQI▼125
=1479VallejoCalifornia, United States 41 US AQI▼124
=1479CalgaryAlberta, Canada 41 US AQI▼181
=1479HiragiKagawa, Japan 41 US AQI▼116
=1479HigashikurumeTokyo, Japan 41 US AQI▼78
=1525GyeongjuGyeongsangbuk-do, South Korea 41 US AQI▼160
=1525YaoOsaka, Japan 41 US AQI▼122
=1525Ureshinomachi-shimojukuSaga, Japan 41 US AQI▼72
=1525TsuMie, Japan 41 US AQI▼71
=1525ObitaNagasaki, Japan 41 US AQI▼157
=1525NishinomiyaHyōgo, Japan 41 US AQI▼119
=1525KobeHyōgo, Japan 41 US AQI▼117
=1525KasaokaOkayama, Japan 41 US AQI▼209
=1525IzumiOsaka, Japan 41 US AQI▼116
=1525HanyūSaitama, Japan 41 US AQI▼62
=1525HagiYamaguchi, Japan 41 US AQI▼113
=1525AiharaKanagawa, Japan 41 US AQI▼60
=1525MinawaKanagawa, Japan 41 US AQI▼112
=1525YoshiokaMiyagi, Japan 41 US AQI▼111
=1525MaitlandNew South Wales, Australia 41 US AQI▼148
=1525UtielValencia, Spain 41 US AQI▼364
=1525WaalreNorth Brabant, The Netherlands 41 US AQI▼205
=1525The HagueSouth Holland, The Netherlands 41 US AQI▼145
=1525EnschedeOverijssel, The Netherlands 41 US AQI▼204
=1525EindhovenNorth Brabant, The Netherlands 41 US AQI
=1525Wiener NeustadtLower Austria, Austria 41 US AQI▼144
=1525SchwazTyrol, Austria 41 US AQI▼143
=1525KapellenFlanders, Belgium 41 US AQI▼199
=1525Wismarlast full day 10 OctMecklenburg-Vorpommern, Germany 41 US AQI▼315
=1525Wesellast full day 10 OctNorth Rhine-Westphalia, Germany 41 US AQI
=1525Schwandorf in Bayernlast full day 10 OctBavaria, Germany 41 US AQI▼280
=1525LudwigsburgBaden-Wurttemberg, Germany 41 US AQI▼248
=1525Luckenwaldelast full day 10 OctBrandenburg, Germany 41 US AQI▼247
=1525Kaiserslauternlast full day 10 OctRheinland-Pfalz, Germany 41 US AQI▼196
=1525DenainHauts-de-France, France 41 US AQI▼137
=1525CannesProvence-Alpes-Côte d'Azur, France 41 US AQI▼190
=1525KroměřížZlín, Czechia 41 US AQI
=1525AvilésAsturias, Spain 41 US AQI▼918
=1525Tula de AllendeHidalgo, Mexico 41 US AQI▼135
=1525Ciudad JuárezChihuahua, Mexico 41 US AQI▼236
=1525BessemerAlabama, United States 41 US AQI▼93
=1525Ferry Passlast full day 7 OctFlorida, United States 41 US AQI▼133
=1525Kendale LakesFlorida, United States 41 US AQI▼186
=1525ColumbusGeorgia, United States 41 US AQI▼47
=1525EvansvilleIndiana, United States 41 US AQI▼132
=1525OlatheKansas, United States 41 US AQI▼185
=1525Mission BendTexas, United States 41 US AQI▼178
=1525BrookfieldIllinois, United States 41 US AQI▲8
=1525Evergreen ParkIllinois, United States 41 US AQI▼88
=1525NilesIllinois, United States 41 US AQI▼42
=1525PrunedaleCalifornia, United States 41 US AQI▼172
=1525RosevilleCalifornia, United States 41 US AQI▼128
=1525AgassizBritish Columbia, Canada 41 US AQI▼168
=1525HopeBritish Columbia, Canada 41 US AQI▼167
=1525Misato, SaitamaSaitama, Japan 41 US AQI▼81
=1525MotosuGifu, Japan 41 US AQI▼79
=1525ItoshimaFukuoka, Japan 41 US AQI▼76
=1525SaikaiNagasaki, Japan 41 US AQI▼75
=1578Augustówlast full day 5 OctPodlasie, Poland 40 US AQI
=1578YanaiYamaguchi, Japan 40 US AQI▼174
=1578TondabayashichōOsaka, Japan 40 US AQI▼123
=1578TokushimaTokushima, Japan 40 US AQI▼79
=1578HigashinozoeHyōgo, Japan 40 US AQI▼121
=1578KusatsuShiga, Japan 40 US AQI▼75
=1578KurihamaKanagawa, Japan 40 US AQI▼117
=1578HonjōSaitama, Japan 40 US AQI▼116
=1578HamamatsuShizuoka, Japan 40 US AQI▲13
=1578GionHiroshima, Japan 40 US AQI▼114
=1578HikariYamaguchi, Japan 40 US AQI▼70
=1578TamworthNew South Wales, Australia 40 US AQI▼202
=1578MackayQueensland, Australia 40 US AQI▼69
=1578HaarlemNorth Holland, The Netherlands 40 US AQI
=1578ViennaVienna, Austria 40 US AQI▼63
=1578GänserndorfLower Austria, Austria 40 US AQI▼161
=1578MenenFlanders, Belgium 40 US AQI▼160
=1578MechelenFlanders, Belgium 40 US AQI▼253
=1578TitzNorth Rhine-Westphalia, Germany 40 US AQI
=1578PotsdamBrandenburg, Germany 40 US AQI▼250
=1578Neuwiedlast full day 10 OctRheinland-Pfalz, Germany 40 US AQI▼302
=1578Jenalast full day 10 OctThuringia, Germany 40 US AQI▼194
=1578Geralast full day 10 OctThuringia, Germany 40 US AQI▼248

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).