Air pollution issues

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

Services and information

Acid rain

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


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

Ozone layer

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

Transboundary air

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


Overview of air pollution issues.

What we are doing

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