Air pollution issues

Acid rain, smog, transboundary air, ozone layer, contaminants, pollutants, heavy metals, toxics.

Services and information

Acid deposition, pollutants, effects, history, linkages, activities, frequently asked questions.

Gases, particles, haze, effects, pollutants, levels, health, environment, history, winter smog.

Regulatory information, depletion, impacts, climate change and protection of the ozone layer.

Air quality, concerns, notification, international, agreement, strategy, Canada-United States.

Overview of air pollution issues.