Air Quality Guide for 8 hour Average Ozone (O₃)

Air Quality Index
(ppb)

Health Concern

Good
(0-59)

None

Moderate
(60-75)

Unusually sensitive people should consider reducing prolonged or heavy exertion

Unhealthy for Sensitive Groups
(76-95)

People with heart or lung disease, older adults, and children should reduce prolonged or heavy exertion.

Unhealthy
(96-115)

People with heart or lung disease, older adults, and children should avoid prolonged or heavy exertion. Everyone else should reduce prolonged or heavy exertion.

Very Unhealthy
116+

People with heart or lung disease, older adults, and children should avoid all physical activity outdoors. Everyone else should avoid prolonged or heavy exertion.