0d1cfec9_t_the_AQI__Ozone_and_Particles__FACT
[MYTH] I need to pay attention only to red and purple Air Quality Index levels. [FACT] 
Even when the air quality is forecast to be code orange for ozone or particles, it is unhealthy for people in sensitive groups.
TV Weather - Myths and Facts about the AQI, Ozone and Particles
FACT