(7.7) The Department of Environmental Management (DEM) has issued an ozone alert health advisory for Saturday, July 7. The DEM predicts,
. . . that air quality will reach unhealthy levels in Rhode Island, but especially in southern sections again in the afternoon on Saturday. A very hot and very humid air mass with southwest winds will be present at that time, which will lead to unhealthy air conditions. The poor air quality will be due to elevated ground level ozone concentrations. Ozone is a major component of smog and is formed by the photochemical reaction of pollutants emitted by motor vehicles, industry and other sources in the presence of elevated temperatures and sunlight.
All RIPTA routes, excluding special services, will be free on Saturday, July 7.