Unhealthy for sensitive individuals. High levels of ozone air pollution exists and levels may exceed health-based standards. Sensitive individuals should limit prolonged moderate exertion outdoors.
Red
Unhealthy for everyone. High levels of ozone air pollution exists and levels may exceed health-based standards. Everyone should limit prolonged moderate exertion outdoors.
Purple
Very unhealthy for everyone. High levels of ozone air pollution exists and levels may exceed health-based standards. Everyone should avoid prolonged moderate exertion outdoors.