No Masks, No Air Purifiers, No Lung Diseases: These 8 Global Cities Have Cleanest Air With AQI Below 30

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Zurich consistently ranks among the world’s cleanest cities, with minimal traffic pollution, strong emission controls and efficient public transport keeping daily PM2.5 levels and AQI comfortably below 30. 2 / 8

Perth’s coastal location, low industrial density and strong air-quality monitoring give it consistently excellent readings. Recent rankings put Perth in the cities with lowest AQI. 3 / 8

Auckland was identified in the 2024 global air-quality review as one of the major cities with the cleanest air, with annual PM2.5 averages among the world’s lowest. 4 / 8

Surrounded by forests, lakes and the Baltic Sea, the city benefits from steady coastal breezes, while its sleek architecture and spacious urban design enhance the feeling of openness. 5 / 8

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