An integrated statistical approach for evaluating the exceedence of criteria pollutants in the ambient air of megacity Delhi

► Integrated statistical approach has been used to evaluate compliance of air quality standards. ► Approach uses statistical distribution model and exceedence probability of standards. ► Approach allows source reduction estimates for non-compliance criteria pollutants. ► Unlike other criteria pollutants, PM10 and SPM require source emission reductions. ► Use of probability density function needed for realistic estimates of exceedences.