Smog
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Smog is a problem in most large cities. It is caused by emissions from industry, motor vehicles, domestic wood combustion and other sources, accumulating under certain meteorological conditions.
The term smog was first used during the 1950s to describe a mixture of smoke and fog. EPA can forecast days when smog will be a problem and issue appropriate alerts when necessary.
Air quality summary
Wednesday 16 May 2012: Summary for the 24 hours to 3 PM: GOOD to VERY GOOD air quality.
Forecast: GOOD to VERY GOOD air quality is expected in Melbourne tomorrow [Thursday]