All 2,645 cities by PM2.5, last 24 hours

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 are missing from this board, not clean.

Hide the 1,153 cities with only 1–2 sensors

These cities have only one or two low-cost sensors, and one cheap unit can read well off, so they take no rank. They sit at their place by value, marked –, and every ranked city keeps its number.

not rankedSan ClementeCalifornia, United States 18 US AQI0.2 times the WHO guideline
not rankedTustinCalifornia, United States 18 US AQI0.2 times the WHO guideline
not rankedNorth TustinCalifornia, United States 18 US AQI0.2 times the WHO guideline
=2336DimitrovgradHaskovo, Bulgaria 17 US AQI0.2 times the WHO guideline▼1139
=2336HedemoraDalarna, Sweden 17 US AQI0.2 times the WHO guideline▲56
=2336HuizenNorth Holland, The Netherlands 17 US AQI0.2 times the WHO guideline
=2336HeerlenLimburg, The Netherlands 17 US AQI0.2 times the WHO guideline▼205
=2336GingelomFlanders, Belgium 17 US AQI0.2 times the WHO guideline▼98
=2336TitzNorth Rhine-Westphalia, Germany 17 US AQI0.2 times the WHO guideline▼328
=2336PulheimNorth Rhine-Westphalia, Germany 17 US AQI0.2 times the WHO guideline
=2336LeipzigSaxony, Germany 17 US AQI0.2 times the WHO guideline▼2274
=2336EppingenBaden-Wurttemberg, Germany 17 US AQI0.2 times the WHO guideline
=2336VerdunGrand Est, France 17 US AQI0.2 times the WHO guideline▼516
=2336MoulinsAuvergne-Rhône-Alpes, France 17 US AQI0.2 times the WHO guideline▼573
=2336ÉvreuxNormandy, France 17 US AQI0.2 times the WHO guideline▼294
=2336TrebinjeSrpska, Bosnia and Herzegovina 17 US AQI0.2 times the WHO guideline▲205
=2336South LaurelMaryland, United States 17 US AQI0.2 times the WHO guideline
=2336MarshallMinnesota, United States 17 US AQI0.2 times the WHO guideline▼1195
=2336ShakopeeMinnesota, United States 17 US AQI0.2 times the WHO guideline▼1768
=2336LompocCalifornia, United States 17 US AQI0.2 times the WHO guideline▼369
=2336Spokane ValleyWashington, United States 17 US AQI0.2 times the WHO guideline▲332
=2336CasperWyoming, United States 17 US AQI0.2 times the WHO guideline▲156
=2336KentvilleNova Scotia, Canada 17 US AQI0.2 times the WHO guideline▲245
=2336MonctonNew Brunswick, Canada 17 US AQI0.2 times the WHO guideline▲84
=2336High PeakEngland, United Kingdom 17 US AQI0.2 times the WHO guideline▼105
=2336AintreeVictoria, Australia 17 US AQI0.2 times the WHO guideline▼104
not rankedZvyahelZhytomyr Oblast, Ukraine 17 US AQI0.2 times the WHO guideline
not rankedTroyanLovech, Bulgaria 17 US AQI0.2 times the WHO guideline
not rankedCongletonEngland, United Kingdom 17 US AQI0.2 times the WHO guideline
not rankedTessenderloFlanders, Belgium 17 US AQI0.2 times the WHO guideline
not rankedPoperingeFlanders, Belgium 17 US AQI0.2 times the WHO guideline
not rankedHalleNorth Rhine-Westphalia, Germany 17 US AQI0.2 times the WHO guideline
not rankedEbersbach an der FilsBaden-Wurttemberg, Germany 17 US AQI0.2 times the WHO guideline
not rankedLanderneauBrittany, France 17 US AQI0.2 times the WHO guideline
not rankedMenomonee FallsWisconsin, United States 17 US AQI0.2 times the WHO guideline
not rankedFoster CityCalifornia, United States 17 US AQI0.2 times the WHO guideline
=2359VolgogradVolgograd Oblast, Russia 17 US AQI0.2 times the WHO guideline▼98
=2359Naujoji AkmeneSiauliai, Lithuania 17 US AQI0.2 times the WHO guideline▼126
=2359SninaPrešov Region, Slovakia 17 US AQI0.2 times the WHO guideline▼125
=2359DunholmeEngland, United Kingdom 17 US AQI0.2 times the WHO guideline▼521
=2359SinzigRheinland-Pfalz, Germany 17 US AQI0.2 times the WHO guideline▼254
=2359DetmoldNorth Rhine-Westphalia, Germany 17 US AQI0.2 times the WHO guideline▼173
=2359ChemnitzSaxony, Germany 17 US AQI0.2 times the WHO guideline
=2359ToursCentre-Val de Loire, France 17 US AQI0.2 times the WHO guideline▼444
=2359Bellegarde-sur-ValserineAuvergne-Rhône-Alpes, France 17 US AQI0.2 times the WHO guideline▼138
=2359Santa Maria A VicoCampania, Italy 17 US AQI0.2 times the WHO guideline▼564
=2359BeneventoCampania, Italy 17 US AQI0.2 times the WHO guideline▼964
=2359AsunciónAsuncion, Paraguay 17 US AQI0.2 times the WHO guideline
=2359BurnsvilleMinnesota, United States 17 US AQI0.2 times the WHO guideline▼1598
=2359MankatoMinnesota, United States 17 US AQI0.2 times the WHO guideline▼1866
=2359Saint PaulMinnesota, United States 17 US AQI0.2 times the WHO guideline▼1574
=2359PortsmouthNew Hampshire, United States 17 US AQI0.2 times the WHO guideline▲16
=2359VermillionSouth Dakota, United States 17 US AQI0.2 times the WHO guideline▼1013
=2359IndioCalifornia, United States 17 US AQI0.2 times the WHO guideline
=2359Los BanosCalifornia, United States 17 US AQI0.2 times the WHO guideline▼194
=2359Las VegasNevada, United States 17 US AQI0.2 times the WHO guideline▼73
=2359West JordanUtah, United States 17 US AQI0.2 times the WHO guideline▼994
=2359GrandviewWashington, United States 17 US AQI0.2 times the WHO guideline▲254
=2359WorlandWyoming, United States 17 US AQI0.2 times the WHO guideline▲270
=2359Medicine HatAlberta, Canada 17 US AQI0.2 times the WHO guideline▲304
not rankedBortnychiKyiv City, Ukraine 17 US AQI0.2 times the WHO guideline
not rankedZeistUtrecht, The Netherlands 17 US AQI0.2 times the WHO guideline
not rankedHarelbekeFlanders, Belgium 17 US AQI0.2 times the WHO guideline
not rankedRheda-WiedenbrückNorth Rhine-Westphalia, Germany 17 US AQI0.2 times the WHO guideline
not rankedIdar-ObersteinRheinland-Pfalz, Germany 17 US AQI0.2 times the WHO guideline
not rankedBrühlNorth Rhine-Westphalia, Germany 17 US AQI0.2 times the WHO guideline
not rankedMenlo ParkCalifornia, United States 17 US AQI0.2 times the WHO guideline
not rankedNovatoCalifornia, United States 17 US AQI0.2 times the WHO guideline
=2383KlaipėdaKlaipėda County, Lithuania 16 US AQI0.2 times the WHO guideline▼175
=2383ArmidaleNew South Wales, Australia 16 US AQI0.2 times the WHO guideline▼781
=2383HalesworthEngland, United Kingdom 16 US AQI0.2 times the WHO guideline▼147
=2383UrkFlevoland, The Netherlands 16 US AQI0.2 times the WHO guideline
=2383EmmeloordFlevoland, The Netherlands 16 US AQI0.2 times the WHO guideline
=2383KortenbergFlanders, Belgium 16 US AQI0.2 times the WHO guideline
=2383Schwäbisch GmündBaden-Wurttemberg, Germany 16 US AQI0.2 times the WHO guideline
=2383RenningenBaden-Wurttemberg, Germany 16 US AQI0.2 times the WHO guideline
=2383LeonbergBaden-Wurttemberg, Germany 16 US AQI0.2 times the WHO guideline▼624
=2383KönigswinterNorth Rhine-Westphalia, Germany 16 US AQI0.2 times the WHO guideline▼346
=2383MontargisCentre-Val de Loire, France 16 US AQI0.2 times the WHO guideline▼741
=2383Joué-lès-ToursCentre-Val de Loire, France 16 US AQI0.2 times the WHO guideline▼301
=2383Castel MaggioreEmilia-Romagna, Italy 16 US AQI0.2 times the WHO guideline▼397
=2383KoperUrban Municipality of Koper, Slovenia 16 US AQI0.2 times the WHO guideline▲240
=2383Apple ValleyMinnesota, United States 16 US AQI0.2 times the WHO guideline▼1531
=2383MesaArizona, United States 16 US AQI0.2 times the WHO guideline▼649
=2383ParadiseCalifornia, United States 16 US AQI0.2 times the WHO guideline▼706
=2383ButteMontana, United States 16 US AQI0.2 times the WHO guideline▲31
=2383TalentOregon, United States 16 US AQI0.2 times the WHO guideline▲33
=2383North BendWashington, United States 16 US AQI0.2 times the WHO guideline▼326
=2383Grande PrairieAlberta, Canada 16 US AQI0.2 times the WHO guideline▼264
=2383RheinstettenBaden-Wurttemberg, Germany 16 US AQI0.2 times the WHO guideline
not rankedUlyanovskUlyanovsk, Russia 16 US AQI0.2 times the WHO guideline
not rankedBan LaongamSalavan Province, Laos 16 US AQI0.2 times the WHO guideline
not rankedNewburyEngland, United Kingdom 16 US AQI0.2 times the WHO guideline
not rankedCrowboroughEngland, United Kingdom 16 US AQI0.2 times the WHO guideline
not rankedHeerhugowaardNorth Holland, The Netherlands 16 US AQI0.2 times the WHO guideline
not rankedDeventerOverijssel, The Netherlands 16 US AQI0.2 times the WHO guideline
not rankedBlerickLimburg, The Netherlands 16 US AQI0.2 times the WHO guideline
not rankedAlkmaarNorth Holland, The Netherlands 16 US AQI0.2 times the WHO guideline
not rankedFeldkirchVorarlberg, Austria 16 US AQI0.2 times the WHO guideline
not rankedPont-à-CellesWallonia, Belgium 16 US AQI0.2 times the WHO guideline

What stands behind each figure: Checked at 2+ sites One reference monitor Low-cost sensors 1–2 sensors, not ranked 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 24 hours to 14 Oct 2026, 05:00 UTC: each city's mean of its hourly values, cities measured in 18 or more of the 24 hours. Monitor data from national networks via OpenAQ and the publishers listed at smogrank.com/sources. smogrank.com/rankings. Ranked on low-cost sensors, with no reference monitor in the city: #1 Gaur, Madhesh, #2 Kuala Lumpur, #4 Multan, #5 Faisalabad, #6 Gujranwala, #7 Lilongwe, #8 Lahore, #9 Dhaka and #10 Bahawalpur. Some values from Sensor.Community, ODbL. Some readings from Vietnam's government monitors; Uzhydromet (Uzbekistan's Hydrometeorological Service); Department of Environment, Nepal; 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 05:07 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; Uzhydromet (Uzbekistan's Hydrometeorological Service); Department of Environment, Nepal; Aurassure; RMCAB (Secretaría Distrital de Ambiente, Bogotá); Umhverfisstofnun (Environment Agency of Iceland), no reuse terms published (why we use them).