Air Quality Monitoring

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Air Quality Index of Major Towns across Sikkim


The State Pollution Control Board Sikkim has been conducting ambient air quality monitoring under the National Ambient Air Monitoring Programme in eight stations in the state of Sikkim. As per the latest AQi monitoring conducted during the year 2021, the ambient air quality in the state has been well within the permissible limits as per the provisions of the Air (Prevention and Control of Pollution) Act, 1981. While AQI for majority of the towns are under 'Good' category, three major towns i.e Rangpo, Singtam and Deorali (Gangtok) in East Sikkim have fallen under 'Satisfactory' category which may be attributed to the fact that these towns are located in proximity to the National Highway NH10 which is subjected to heavy movement to vehicles.

 

SN Name of Station
MONTHLY AQI FOR THE YEAR 2021
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

1

Rangpo, East Sikkim

61

66

77

85

56

51

64

55

57

44

64

66

2

Singtam, East Sikkim

47

48

53

53

50

50

46

40

44

48

51

54

3

Deorali, East Sikkim

56

67

61

62

65

22

24

31

42

51

56

54

4

Ravangla, South Sikkim

19

19

28

25

29

23

21

26

23

23

24

23

5

Namchi, South Sikkim

31

31

33

29

32

20

28

27

31

32

31

28

6

Pelling, West Sikkim

29

33

35

31

30

14

19

27

30

33

31

32

7

Mangan, North Sikkim

25

25

19

27

33

29

30

27

23

34

29

30

8

Chungthang, North Sikkim

20

26

31

29

32

27

24

28

27

27

28

25

 

 AQI 2021 Chart

   

» Click here for Weekly/ Monthly AQI details


National AQI Category and its associated health impacts
AQI-Standards



National Air Quality Monitoring Programme (NAMP)

To prevent, control and abate air pollution in the country, the Government of India enacted Central legislation called the Air (Prevention & Control of Pollution) Act, 1981 (referred to as the Air Act, 1981). Every polluting industry must obtain a consent from the State Pollution Control Board for the discharge of air pollut­ants in any form through chimney or otherwise. The State Board may lay down suitable conditions while giving consent to discharge air pollutants in the light of emis­sion standards developed by the Central Board, subsequently notified through the rules framed under the Environment (Ptrotection) Act, 1986 Rules.

The air quality surveillance and monitoring is under taken to detect any deterioration in air quality arising from industrial, vehicular, residential and natural sources of pollution, as there are large seasonal variation in the concentration of various air pollutants. Air quality monitoring is the measurement of various pollutants to study the pattern and movement of air masses and deterioration of air quality. Monitoring programme helps in estimating the dynamic concentration levels of various pollutants from time to time, based on dispersal mode of original concentration at sources and at receptor end.

With a number of industrial units in the state mostly the pharmaceuticals and ancillary units, SPCB Sikkim under the National Air Monitoring Programme (NAMP) has established nine (09) nos. of Air Quality Monitoring (AQM) stations in order to monitor the air quality in the state. The state of Sikkim has been declared as the Air Pollution Control Area under Gazette notification no. 506 dated 08/09/2011. The details of the monitoring stations are as under:

SN

Name of monitoring station

Latitude o N

Longitude o E

1.

RANGPO

27.1736

88.5305

2.

SINGTAM

27.5144

88.4969

3.

DEORALI

27.3183

88.6063

4.

RAVANGLA

27.3075

88.363

5.

NAMCHI

27.17

88.35

6.

PELLING

27.3028

88.2344

7.

CHUNGTHANG

27.6033

88.6469

8.

MANGAN

27.5025

88.5358

*The 9th station located at Tashi View point, Gangtok has been damaged due to landslide and currently not in operation.



Weekly Ambient Air Quality Data (AQI and Average PM10, SO2, NO2) across Sikkim State at 8 (Eight) stations.

» Ambient Air Quality Data for the Month of March 2022 new

» Ambient Air Quality Data for the Month of February 2022 new

» Ambient Air Quality Data for the Month of January 2022 new

» Ambient Air Quality Data for the Month of December 2021

» Ambient Air Quality Data for the Month of November 2021

» Ambient Air Quality Data for the Month of October 2021

» Ambient Air Quality and Noise level data during Deepawali festival 2021 (28.10.2021 to 11.11.2021)

» Ambient Air Quality Data for the Month of September 2021

» Ambient Air Quality Data for the Month of August 2021

» Ambient Air Quality Data for the Month of July 2021

» Ambient Air Quality Data for the Month of June 2021

» Ambient Air Quality Data for the Month of May 2021

» Ambient Air Quality Data for the Month of April 2021

» Ambient Air Quality Data for March 30th and April 1st week 2021

» Ambient Air Quality Data for February (3rd and 4th week) 2021

» Ambient Air Quality Data for February (1st and 2nd week) 2021

» Ambient Air Quality Data for January (3rd and 4th week) 2021

» Ambient Air Quality Data for January (1st and 2nd week) 2021

» Ambient Air Quality Data for period December 2020

» Ambient Air Quality Data for period November 2020 (during Deepawali)

» Ambient Air Quality Data for period October, 2020

» Ambient Air Quality Data for period September, 2020

» Ambient Air Quality Data for period June (1st week), 2020

» AQI during Lockdown (May 25 - June 10, 2020) in Sikkim

» Ambient Air Quality Data for period April (4th week), 2020  

» Ambient Air Quality Data for period April (3rd week), 2020  

» Ambient Air Quality Data for period February (4th week), 2020  

» Ambient Air Quality Data for period February (3rd week), 2020  

» Ambient Air Quality Data for period February (2nd week), 2020  

» Ambient Air Quality Data for period February (1st week), 2020  

» Ambient Air Quality Data for period January (4th week), 2020  

» Ambient Air Quality Data for period January (1st week), 2020  

» Ambient Air Quality Data for period December (3rd and 4th), 2019

» Ambient Air Quality Data for period December (2nd week), 2019

» Ambient Air Quality Data for period December (1st week), 2019  

» Ambient Air Quality Data for period November (4th week), 2019  

» Ambient Air Quality Data for period November (3rd week), 2019  

» Ambient Air Quality Data for period October 25-31, 2019  

» Ambient Air Quality Data for period October 21 to November 4, 2019  (Gangtok)  

» Ambient Air Quality Data for period September (3rd and 4th week), 2019  

» Ambient Air Quality Data for period September (1st and 2nd week), 2019  

» Ambient Air Quality Data for period July (4th week), 2019  

» Ambient Air Quality Data for period July (3rd week), 2019  

» Ambient Air Quality Data for period June (4th week) till July (2nd week), 2019  

» Ambient Air Quality Data for period May (4th week), 2019  

» Ambient Air Quality Data for period April (3rd week), 2019  

» Ambient Air Quality Data for period April (1st and 2nd week), 2019  

» Ambient Air Quality Data for period March (4th week), 2019  

» Ambient Air Quality Data for period March (3rd week), 2019  

» Ambient Air Quality Data for period March (2nd week), 2019  

» Ambient Air Quality Data for period March (1st week), 2019  

» Ambient Air Quality Data for period February (4th week), 2019  

» Ambient Air Quality Data for period February (3rd week), 2019  

» Ambient Air Quality Data for period February (2nd week), 2019  

» Ambient Air Quality Data for period February (1st week), 2019  

» Ambient Air Quality Data for period January (4th week), 2019  

» Ambient Air Quality Data for period January (3rd week), 2019  

» Ambient Air Quality Data for period January (2nd week), 2019  

» Ambient Air Quality Data for period January (1st week), 2019  

» Ambient Air Quality Data for period December (1st week), 2018  

» Ambient Air Quality Data for period November (3rd week), 2018  

» Ambient Air Quality Data for period June 19 & 21, 2018  

» Ambient Air Quality Data for period June 14 & 16, 2018  

» Ambient Air Quality Data for period April 17 & 19, 2018  

» Ambient Air Quality Data for period April 10 & 12, 2018  

» Ambient Air Quality Data for period April 3 & 5, 2018  

» Ambient Air Quality Data for period March 27 & 29, 2018  

» Ambient Air Quality Data for period March 21 & 23, 2018 

» Ambient Air Quality Data for period February 20 & 22, 2018  

» Ambient Air Quality Data for period January 31 & February 01, 2018  

» Ambient Air Quality Data for period January 23 & January 25, 2018

» Ambient Air Quality Data for period January 16 & January 18, 2018

» Ambient Air Quality Data for period January 9 & January 11, 2018

» Ambient Air Quality Data for period January 2 & January 4, 2018

» Ambient Air Quality Data for period December 26 & December 29, 2017

» Ambient Air Quality Data for period December 2 & December 5, 2017

» Ambient Air Quality Data for period November 28 & November 30, 2017

» Ambient Air Quality Data for period November 21 & November 23, 2017

» Ambient Air Quality Data for period November 07 & November 9, 2017

» Ambient Air Quality Data for period October 31 & November 2, 2017



Industrial Ambient Air Quality of Sikkim

» Industrial Air Quality of Sikkim (2015-16)