Current Ozone Levels Pose No Grave Threat

A weather expert associated the recent rise in air pollution in the capital Tehran to the higher ozone levels due to summer heat, dismissing social media reports that it poses a collective, grave threat to the Iranian public.
"Not all the people should be worried by the increase in the amount of ozone in Tehran's air and only the sensitive groups need to cut their [outdoor] activities," head of the air pollution committee at Iran's Ministry of Health, Abbas Shahsavani, was quoted by ISNA as saying on Wednesday.
Based on Air Quality Index, conditions are categorized into six health levels, namely Clean (0-50), Healthy (51-100), Unhealthy for Sensitive Groups (101-150), Unhealthy (151-200), Very Unhealthy (201-300) and Hazardous (301- 500).