The Evansville EPA has extended the Ozone Alert through Thursday.
The alert was first issued Tuesday. It’s the second ozone alert of the summer.
The combination of heat, bright sun, and little or no wind can cause ground-level ozone to reach or exceed unhealthy levels for sensitive people.
The EPA warns people with heart or lung disease, children, and older adults to reduce prolonged or heavy exertion outdoors, especially between noon and 7 p.m.
Exposure to high levels of ozone can cause lung and throat irritation, shortness of breath, and aggravate respiratory diseases such as asthma, emphysema, and bronchitis.
The EPA urges residents to conserve electricity, limit driving or use public transit, and postpone refueling vehicles until the evening.