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AMBIENT AIR QUALITY STANDARDS

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POLLUTANT

1 HOUR AVERAGE ppm

DAILY AVERAGE
ppm

MONTHLY AVERAGE
ppm

US
AQS

US
EPA

 WHO SA US
AQS		 US
EPA		 WHO SA US
AQS		 US
EPA		 WHO SA
OZONE

0.12

0.12

0.1

0.12

0.05

0.05

0.03
NO2

0.25

0.21

0.5

0.08

0.1

0.08
NOx

0.9

0.3

0.2
CO

35

25

9

9
NON-CH4

HYDROCARBONS

0.24

06:00 to 09:00

0.4

0.2

0.15
PM10(ug/m3)

150

150

70

 150
LEAD (Pb) 1 ug/m3 2,5 ug/m3

ANNUAL AVERAGE
ppm
US
AQS		 US
EPA		 WHO SA
SMOKE 100 ug/m3
TSP 150 ug/m3 150 ug/m3
SO2 0.1 0.02 0.03
 

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