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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
43 AQI (IN)
TorontoCanada
38 AQI (IN)
LondonUnited Kingdom
21 AQI (IN)
MelbournAustralia
13 AQI (IN)
JohannesburgSouth Africa
11 AQI (IN)
