[Meaning] Air pollution is minimal and there is little health risk. [Precautions to Take] None. [Air Pollution Category] 
Good
G o o d
M o d e r a t e
U n h e a l t h y f o r S e n s i t i v e G r o u p s
U n h e a l t h y
V e r y U n h e a l t h y
H a z a r d o u s