Air pollution and health
Air pollution can occur anywhere. It occurs when the environment is contaminated by any chemical, physical or biological agent that modifies the natural characteristics of the atmosphere. Stoves in the home, motor vehicles, industrial facilities and forest fires are common sources of air pollution.
Pollutants of major public health concern include particulate matter, carbon monoxide, ozone, nitrogen dioxide and sulfur dioxide. Both ambient (outdoor) and household (indoor) air pollution cause respiratory and other diseases, which can be fatal.
WHO programmes and activities
Media and news highlights
- Air quality deteriorating in many of the world's cities
- 7 million premature deaths annually linked to air pollution
- Air pollution, Climate and Health-related side events at the UN Climate Change Conference (COP19)
Outdoor air pollution: a leading environmental cause of cancer
- Frequently asked questions on urban outdoor air pollution and health
- Fact sheet on outdoor air pollution
- Tackling the global clean air challenge