Rising ozone levels Tuesday could result in air that’s unhealthy for sensitive groups. AQalertbutton

The Louisville Metro Air Pollution Control District has issued an Air Quality Alert for ozone, saying the air pollution could affect young children, the elderly and people with respiratory ailments like asthma and COPD.

This year marks the first ozone season when Louisville will be subject to stricter federal ozone standards, and subject to a limit of 70 parts per billion. The previous standard was 75 parts per billion.