Related Clues:

• Some urban air
• Unkept yard, e.g.
• Alert subject
• Air apparent?
• It's not pretty
• Food wrappers and such on the street
• Air pollution
• Environmental-ist’s annoyance
• E.P.A. concern
• City pollution
• Not a pretty picture
• Los Angeles woe
• Rundown shack, e.g.
• It doesn't look good
• Portmanteau pollution mixture