OVER ALL AIR QUALITY IN DELHI IS IN MODERATE CATEGORY WITH OZONE AS THE LEAD POLLUTANT. THERE ARE ONLY VERY FEW OCCASIONS IN A YEAR WHEN OZONE BECOMES A LEAD POLLUTANT. OZONE IS CONSISTENTLY SHOWING AN ELEVATED TREND THIS SUMMER DUE TO HEAT WAVE CONDITIONS PREVAILED IN DELHI. THE AQI OF PARTICULATE MATTERS PM2.5 IS WELL WITHIN NAAQS LIMIT IN SATISFACTORY RANGE. THE MAXIMUM TEMPERATURE IS PREDICTED TO INCREASE SLOWLY OVER NEXT THREE DAYS, WHICH IS LIKELY TO INCREASE OZONE PRODUCTION AND CONTINUE TO MAINTAIN OZONE AS MOST PROMINENT POLLUTANT. THE AQI IS PREDICTED TO SLIGHTLY DETERIORATE TO HIGHER END OF MODERATE TO POOR CATEGORY WITH OZONE AS THE LEAD POLLUTANT BY NEXT THREE DAYS.