The Clean Air Campaign issues Smog Alerts on days when the concentrations of either ozone or particle pollution -- or both -- are expected to reach unhealthy levels. You can receive these free in your e-mail. Sign up here .

What is a Smog Alert?

Every day, a team of forecasters reviews weather patterns and other factors to report the forecast of the next day's pollution levels. This forecast determines if a Smog Alert is issued. More...

Kinds of Pollution

There are two kinds of pollution in metro Atlanta -- ground-level ozone and particle pollution. Find out more about them here .

What Are the Hazards?

The hazards of poor air quality increase steadily as pollution levels increase. Each pollutant -- ozone or particle pollution -- carries its own associated health risks and effects .