IndyStar: A third Knozone Action Day declared for Indianapolis amid heat wave

Read the full story by Madison Smalstig here.

Tuesday will be the third Knozone Action Day of the summer, with temperatures set to reach about 100 degrees, according to a news release. 

The Indianapolis Office of Sustainability declared Tuesday a Knozone day following a recommendation from the Indiana Department of Environmental Management. 

Knozone Action Days occur when ozone levels rise above certain thresholds, making the air quality unhealthy for sensitive individuals, such as active children, elderly people and those suffering from any lung-related disease or health issue. These individuals are encouraged to stay inside. 

Knozone Action Days are more frequent during warmer months, when pollutants react with sunlight and heat to create ozone. To limit contributions to the ozone levels, officials suggest avoiding gas-powered vehicles or lawn equipment, idling in gas-powered vehicles and refueling until after 7 p.m.