PM2.5

Science & Health

Air Pollution Explained: What We Breathe, Where It Comes From and Why It Harms Health

Air pollution includes invisible particles and gases that damage health. Understand the major pollutants, their sources, risks and how cleaner air can be achieved.

Science & Health

Sources of Air Pollution Explained: What Causes Air Pollution and Where It Comes From

Air pollution comes from transport, power, industry, homes, agriculture, waste, dust and fires. Learn which sources create which pollutants and why their impact varies.

Explained

Air Quality Index (AQI) Explained: Levels, Colors, Health Risks and How to Read It

What does AQI actually mean? Learn how Air Quality Index levels, colors and pollutants work, how AQI is calculated and when poor air requires precautions.