Ambient Air Quality in Seven Major Cities During 2002

Pollution level

Annual Mean Concentration Range (µg/m3)

Industrial (I)

Residential (R)

SO2 & NO2

RSPM

SPM

SO2, NO2, RSPM

SPM

Low (L)

0-40

0-60

0-180

0-30

0-70

Moderate (M)

40-80

60-120

180-360

30-60

70-140

High (H)

80-120

120-180

360-540

60-90

140-210

Critical (C)

>120

>180

>540

>90

>210

 

STATE / CITY

SO2

NO2

RSPM

SPM

AREA CLASS

I

R

I

R

I

R

I

R

Andhra Pradesh

Hyderabad

L

L

L

M

M

H

M

H

Delhi

Delhi

L

L

L

M

C

C

H

C

Gujarat

Ahmedabad

L

L

M

M

C

C

M

C

Karnataka

Bangalore

L

L

L

M

M

H

L

H

Maharashtra

Mumbai

L

L

L

L

M

H

M

C

Tamilnadu

Chennai

M

L

L

L

M

M

M

M

West Bengal

Kolkata

L

L

H

H

H

C

M

C