Accessibility Features

Print

NATIONAL  AMBIENT AIR  QUALITY  STANDARDS 

Pollutant

Time Weighted Average

Concentration in Ambient Air

Industrial, Residential, Rural & Other Area

Ecologically Sensitive Area (notified by Central Govt.)

Sulphur Di-oxide (SO2), µg/m3

*Annually

*24Hrs

50
 
80

20
     
80

Nitrogen Di-oxide (NO2), µg/m3

*Annually 

*24Hrs

40
 
80

30
      
80

RSPM, µg/m3

*Annually 

*24Hrs

60
    
100

60
            
100