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Levels of Air quality index.
Good
0-50
Unhealthy
201-300
Moderate
51-100
Severe
301-400
Poor
101-200
Hazardous
401-500
Big cities of the world.
Real-time air quality levels in big cities around the world.
New YorkUnited States
47 AQI (IN)
TorontoCanada
43 AQI (IN)
LondonUnited Kingdom
45 AQI (IN)
MelbournAustralia
39 AQI (IN)
JohannesburgSouth Africa
24 AQI (IN)
