Ambient Air Quality Status of Jammu and Kashmir

 

National Ambient Air Quality Standards (NAAQS) 

   Notified on 18th November, 2009

S.No.
Pollutant
Time Weighted Average
Industrial, Residential, Rural and Other Aea
Ecologically Sensitive Area (notified by Central Government)
Methods of Measurement
1 Sulphur Dioxide (SO2), µg/m3 Annual *

 

 

 50

 

20

-Improved West and Gaeke

 

-Ultraviolet flourescence

24 hours** 80
80
2 Nitrogen Dioxide (NO2), µg/m3 Annual * 40
30

 

 

 -Modified Jacob & Hochheiser (Na-Arsenite)

 

  -Chemiluminescence

 

 

 

24 hours** 80
80
3 Particulate Matter (size less than 10 µm) or PM10 µg/m3
Annual *
60
60

 

-Gravimetric

-TOEM

 

 

 -Beta attenuation

 

 


24 hours**
100
100
4 Particulate Matter (size less than 2.5µm) or PM2.5 µg/m3
Annual *
40
40

 

 

 -Gravimetric

 

-TOEM

 

-Beta attenuation

 

 


24 hours**
60
60

 * Annual arithmetic mean of minimum 104 measurements in a year at a particular site taken twice a week 24 hourly at uniform intervals. 

      ** 24 hourly or 08 hourly or 01 hourly monitored values, as applicable, shall be complied with 98% of the time in a year. 2% of the time, they may exceed the limits but not on two consecutive days of monitoring.

 

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 AMBIENT AIR QUALITY STATUS AT JAMMU CITY DURING  OCT 2019-  MARCH 20

 AMBIENT AIR QUALITY STATUS AT SRINAGAR  CITY DURING  2019- 20.