The Arizona Department of Environmental Quality has extended an air quality health watch again this week. It is in effect through Saturday and Sunday because ozone levels may approach federal limits.
Ozone is a pollutant that is created when other pollutants in the air – such as combustion – are heated. Weather forecasts predict extreme heat over the next few days.
Ozone can aggravate already existing respiratory conditions. Older adults and children, as well as those susceptible to respiratory illness, should limit time outdoors.
Car pooling is also recommended to help lower air pollutants.