35164ea6_t_the_Pollution_Standard_Index__n_Air_Campaign_Health_Advisory
[AQI Range] 51 to 100 [EPA Color Scale] Yellow [EPA Descriptor] Moderate
At this level the air is probably safe for most people. However, some people are unusually sensitive and react to ozone in this range, especially at the higher levels (in the 80s and 90s). People with heart and lung diseases such as asthma, and children, are especially susceptible. People in these categories, or people who develop symptoms when they exercise at "yellow" ozone levels, should consider avoiding prolonged outdoor exertion during the late afternoon or early evening when the ozone is at its highest.
Information about the Pollution Standard Index
Clean Air Campaign Health Advisory