A STUDY ON THE AIR QUALITY INDEXING AT VARIOUS LOCATIONS IN HYDERABAD

ABSTRACT: The Seasonal variation of PM2.5, PM10, NO2, NH3,SO2,CO and ozone at one fixed monitoring sites within Hyderabad city. On an average the result of PM2.5, PM10,NO2,NH3,SO2,CO are in the permissible limits of central pollution control board(cpcb).The ozone is not in permissible limits of (cpcb).The limits of the particulate matter and pollutants given by central pollution control board are 0-5 µg/m3 is said to be good,51- 100 µg/m3 is said to be satisfactory , 101-200 µg/m3 is moderate,201-200 µg/m3 is poor,301-400 µg/m3 is very poor,401-500 is severe. The maximum and minimum values of pollutants in one areas are PM2.5 190 µg/m3 is highest value it is moderate, the least value is 5 µg/m3 and is good.PM10 189 µg/m3 is highest value it is moderate, the least value is 9 µg/m3 and is good.NO2 148 µg/m3 is highest value and it is moderate, the least value is 4 µg/m3 is good.NH3 85 µg/m3 is highest it is good, the least value is 1 µg/m3 is good.SO2 127 µg/m3 is highest it is moderate, the least value is 1 µg/m3 is good.CO 109 µg/m3 is highest it is moderate, the least value is 1 µg/m3 it is good and ozone 224 µg/m3 is poor, the least value is 1 µg/m3 it is good. The levels of these pollutants are relatively high in winter and summer than the monsoon season. This is same in almost three areas. Keywords: Permissible, moderate, satisfactory, NH3, CPCB