Just got on weather dot com to check the ol weather for memorial day and saw this...

Air Quality Alert for Philadelphia, PA

Issued by The National Weather Service Philadelphia, PA 3:13 pm EDT, Sun., May. 30, 2010

... AIR QUALITY ALERT IN EFFECT FROM 9 AM TO 10 PM EDT MONDAY...

THE PENNSYLVANIA DEPARTMENT OF ENVIRONMENTAL PROTECTION HAS DECLARED AN AIR QUALITY ACTION DAY FOR THE REGION... IN EFFECT FROM 9 AM TO 10 PM EDT MONDAY.

AN AIR QUALITY ACTION DAY MEANS THAT AIR QUALITY WITHIN THE REGION MAY APPROACH OR EXCEED UNHEALTHY STANDARDS. 

i'm sorry...should i be concerned for my life while breathing tomorrow?