Abstract
Quantification of the spatial and temporal variations of ambient air pollutant concentrations provides the information for epidemiological and other air-pollution studies and many have relied in the past on data from a single, centrally-located air pollution monitoring site. Particulate matter (PM10), nitrogen oxides (NO), sulfur dioxide (SO2), carbon monoxide (CO), ozone (O3) were measured at 3 monitoring sites around a densely populated industrial zone which is at Nilai, Petaling Jaya and Seberang Perai. The observations were obtained over five year period from 2008 to 2012. The descriptive statistics show that the peak concentration of PM10occurs during the dry season; which is coincided with the southwest monsoon and also due to direct-influence of southwest winds and had caused a slightly moderate haze in Southeast Asia. From the Pearson correlation analysis, among the meteorological parameters, ambient temperature indicates the strongest positive correlation to the PM10concentration and proves that the ambient temperature tent to contribute significantly to higher PM10 concentrations as high as in Southwest monsoon.
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