Rising NOx levels and volatile gases in the air, primarily from vehicles, form the recipe for ozone finds this analysis by Centre for Science and Environment (CSE). Read this CSE analysis and find more in this package.

Summer pollution curve takes an ugly turn as ground-level ozone, a highly reactive and harmful gas, far exceeds the permissible limit.

With heat wave raging in early June ozone peaks to dangerous levels. Rising NOx levels and volatile gases in the air, primarily from vehicles, form the recipe for ozone when exposed to intense sunlight and high temperature.