Live ranking
Most polluted cities right now
15 world cities ranked by air quality — each value is the worst pollutant as a multiple of the WHO safe limit. Updated continuously.
- 1BeijingChinaHazardousPM2.5 8.5×
- 2JakartaIndonesiaHazardousPM2.5 7.2×
- 3DelhiIndiaHazardousPM2.5 4.5×
- 4MoscowRussiaWell above WHO limitsNO₂ 3.6×
- 5DubaiUnited Arab EmiratesWell above WHO limitsPM2.5 3.2×
- 6JohannesburgSouth AfricaWell above WHO limitsPM2.5 3.1×
- 7IstanbulTurkeyWell above WHO limitsNO₂ 2.5×
- 8New YorkUnited StatesWell above WHO limitsPM2.5 2.2×
- 9TorontoCanadaAbove WHO limitsPM2.5 2.0×
- 10TokyoJapanAbove WHO limitsNO₂ 1.9×
- 11Hong KongHong KongAbove WHO limitsNO₂ 1.6×
- 12AthensGreeceAbove WHO limitsNO₂ 1.5×
- 13SydneyAustraliaAbove WHO limitsNO₂ 1.5×
- 14Los AngelesUnited StatesAbove WHO limitsPM2.5 1.5×
- 15ChicagoUnited StatesAbove WHO limitsO₃ 1.3×
Cleanest air right now
- 1BangkokThailandClean airNO₂ 0.4×
- 2DublinIrelandClean airPM2.5 0.4×
- 3AucklandNew ZealandClean airO₃ 0.4×
- 4MelbourneAustraliaClean airO₃ 0.4×
- 5OsloNorwayWithin WHO limitsO₃ 0.6×
- 6StockholmSwedenWithin WHO limitsO₃ 0.6×
- 7BogotaColombiaWithin WHO limitsO₃ 0.6×
- 8CopenhagenDenmarkWithin WHO limitsO₃ 0.6×
- 9WarsawPolandWithin WHO limitsO₃ 0.7×
- 10LondonUnited KingdomWithin WHO limitsO₃ 0.7×
How this works
Each city is scored by its most-exceeded pollutant, normalised against the World Health Organization's 2021 air-quality guidelines (so a score of 3× means three times the level considered safe). Data is live from Open-Meteo / CAMS. Tap any city to see its full live breakdown, or check your own area.