The first heat wave of the year will means a Code Orange air quality day for the area on Thursday and likely again on Friday.
The Metropolitan Washington Council of Governments has issued the alert, meaning ozone pollution will meet unhealthy levels for children, elderly and people suffering from asthma, heart disease or other lung diseases:
… AIR QUALITY ALERT IS IN EFFECT FOR THURSDAY MAY 30 2013…
THE METROPOLITAN WASHINGTON COUNCIL OF GOVERNMENTS IN ASSOCIATION WITH MARYLAND DEPARTMENT OF THE ENVIRONMENT, VIRGINIA DEPARTMENT OF ENVIRONMENTAL QUALITY, AND DISTRICT DEPARTMENT OF ENVIRONMENT HAS ISSUED A CODE ORANGE AIR QUALITY ALERT SUNDAY FOR THE DC 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.
More 90-degree days are forecast for Friday and Saturday, when the Council of Governments predicts air quality will fall back to moderate ozone pollution.