BALTIMORE, MD—The Maryland Department of the Environment has issued a Code Orange Air Quality Alert Tuesday for the Baltimore metro area.

A Code Orange Air Quality Alert means that air pollution concentrations within the region may become unhealthy for sensitive groups.

Sensitive groups include children, people suffering from asthma, heart disease or other lung diseases and the elderly.

The effects of air pollution can be minimized by avoiding strenuous activity or exercise outdoors.

Tuesday should be mostly sunny with a high of around 87 degrees, according to the National Weather Service.