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Smog is a type of air pollution. It is a mixture of different pollutants and particles, and forms under certain weather conditions.

Smog can be harmful to our health. Emissions from industry, vehicles, wood burning and other types of air pollution can cause smog.

Smog is a problem in most big cities. Melbourne can get photochemical smog in the summer, and winter smog in the colder months.

Photochemical smog is a haze caused by sunlight mixing with chemicals in the warm air. Winter smog is a build-up of fine particles trapped in the cold air.

EPA monitors and reports smog and air quality to people in Victoria. Air quality information is available at EPA AirWatch.

Read next 

Learn about smog

What to do on a smoggy day

Smog in Melbourne

Reviewed 31 October 2019