NO x and ROCs. There is evidence that even concentrations below 0.12 ppm can increase hospital admissions for asthma and other respiratory conditions. The long-term significance of these effects is unknown. In addition to health effects, ozone can also impact on natural ecosystems and agricultural systems by affecting plant growth and agricultural production. While these effects have been examined overseas, work in Australia has been limited.
Ozone can also affect materials such as paints and rubber.
State Trends in ozone levels within the greater metropolitan area are shown in Core Indicator 1C .