AIR QUALITY ALERT FOR ESSEX COUNTY

This notice issued today 
from the Department 
of Environmental Protection:

.AIR QUALITY ALERT IN EFFECT UNTIL 10 PM EDT THIS EVENING... 
 
THE NEW JERSEY DEPARTMENT OF ENVIRONMENTAL PROTECTION HAS ISSUED AN 
AIR QUALITY ACTION DAY FOR THE FOLLOWING COUNTIES... 
PASSAIC...BERGEN...ESSEX...UNION...AND HUDSON. 
IN EFFECT UNTIL 10 PM EDT THIS EVENING. 
AN AIR QUALITY ACTION DAY MEANS THAT GROUND LEVEL OZONE WITHIN THE 
REGION MAY APPROACH OR EXCEED UNHEALTHY STANDARDS. 
FOR ADDITIONAL INFORMATION...PLEASE VISIT THE NEW JERSEY STATE 
DEPARTMENT OF ENVIRONMENTAL PROTECTION AT... 

What does it mean? The DEP states that in such a case older residents and those with medical concerns should stay inside and avoid breathing air outside.