AMBIENT AIR QUALITY DATA
YEAR - 2004

Annual Average Concentration of Air Pollutants under National Air Quality Monitoring Programme (NAMP)

Table 1: Summary of SO2 levels in during 2004.

S.No.

STATE/UT

CITY

LOCATION

Type of Area

Average
(mg/m3)

Std.
deviation

n

Air Quality

1

Tamil Nadu

Chennai

Thiruvottiyur Municipal Office

I

6

3

94

L

Madras Medical College

R

5

3

94

L

NEERI CSIR Campus

R

4

2

95

L

Kathhivakkam

I

19

7

102

L

Manali

I

20

7

95

L

Thiruvottiyur

I

19

6

101

L

Coimbatore

SIDCO Office

I

10

3

85

L

Dist. Collectors Office

R

8

2

73

L

Poniarajapuram

R

8

2

87

L

Madurai

Fenner (I) Ltd.

I

19

8

93

L

Highway

R

10

3

96

L

Kunnathur Chatram

R

10

3

100

L

Tuticorin

Raja Agencies

I

23

7

99

L

Fisheries College

R

20

7

98

L

AVM Jewellery Building

R

20

5

96

L

Salem

Sowdeswari College Building

R

7

1

144

L

Table 2: Summary of NO2 levels in during 2004.

S.No.

STATE/UT

CITY

LOCATION

Type of Area

Average
(mg/m3)

Std.
deviation

n

Air Quality

1

Tamil Nadu

Chennai

Thiruvottiyur Municipal Office

I

7

4

94

L

Madras Medical College

R

7

4

94

L

NEERI CSIR Campus

R

5

2

95

L

Kathhivakkam

I

32

11

102

L

Manali

I

35

13

95

L

Thiruvottiyur

I

34

11

101

L

Coimbatore

SIDCO Office

I

51

11

85

M

Dist. Collectors Office

R

45

8

73

M

Poniarajapuram

R

43

10

87

M

Madurai

Fenner (I) Ltd.

I

25

11

93

L

Highway

R

20

9

96

L

Kunnathur Chatram

R

24

11

100

L

Tuticorin

Raja Agencies

I

19

15

99

L

Fisheries College

R

18

12

98

L

AVM Jewellery Building

R

18

11

96

L

Salem

Sowdeswari College Building

R

35

14

144

M

Table 3: Summary of RSPM levels in during 2004.

S.No.

STATE/UT

CITY

LOCATION

Type of Area

Average
(mg/m3)

Std.
deviation

n

Air Quality

1

Tamil Nadu

Chennai

Thiruvottiyur Municipal Office

I

39

21

93

L

Madras Medical College

R

39

15

93

M

NEERI CSIR Campus

R

22

11

92

L

Kathhivakkam

I

77

23

102

M

Manali

I

99

28

97

M

Thiruvottiyur

I

86

31

101

M

Coimbatore

SIDCO Office

I

78

26

82

M

Dist. Collectors Office

R

69

66

73

H

Poniarajapuram

R

56

43

84

M

Madurai

Fenner (I) Ltd.

I

52

18

93

L

Highway

R

50

30

96

M

Kunnathur Chatram

R

180

80

99

C

Tuticorin

Raja Agencies

I

37

16

96

L

Fisheries College

R

37

16

95

M

AVM Jewellery Building

R

44

21

97

M

Salem

Sowdeswari College Building

R

36

13

143

M

Table 4: Summary of SPM levels in during 2004.

S.No.

STATE/UT

CITY

LOCATION

Type of Area

Average
(mg/m3)

Std.
deviation

n

Air Quality

1

Tamil Nadu

Chennai

Thiruvottiyur Municipal Office

I

163

66

92

L

Madras Medical College

R

103

29

93

M

NEERI CSIR Campus

R

89

33

92

M

Kathhivakkam

I

134

49

102

L

Manali

I

192

55

97

M

Thiruvottiyur

I

136

52

101

L

Coimbatore

SIDCO Office

I

167

77

82

L

Dist. Collectors Office

R

147

86

72

H

Poniarajapuram

R

124

76

87

M

Madurai

Fenner (I) Ltd.

I

144

56

93

L

Highway

R

110

57

96

M

Kunnathur Chatram

R

397

147

99

C

Tuticorin

Raja Agencies

I

55

27

96

L

Fisheries College

R

56

23

95

L

AVM Jewellery Building

R

65

46

97

L

Salem

Sowdeswari College Building

R

70

29

143

M

Note:- R – Residential and other areas, I – Industrial area, Std deviation – Standard deviation,

n – number of days monitored for 16 and more hours a day

L- Low, M- Moderate, H – High and C – Critical levels of pollution based on exceedence factor