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Ambient Air Pollution
Outdoor air pollution caused by substances such as particulate matter and gases released from activities like transport, industry, and power generation.
PM2.5
Fine particles with a diameter of 2.5 micrometres or smaller, often produced by combustion (for example from vehicles, power plants, and some industrial processes), which can be inhaled deep into the lungs.
Urban Congestion
A condition where traffic demand exceeds road capacity, causing slow speeds, delays, and increased vehicle idling.