Abstract
Ambient inhalable particulates sampled in Riyadh, Saudi Arabia, were analyzed for fine and coarse particle fractions and metal concentrations. Statistical evaluations sought to correlate particulate concentrations with several meteorological variables. Wind speed and atmospheric pressure could be used to predict values of aluminum, arsenic, copper, iron, and lead particulates. Wind speed, atmospheric pressure, and relative humidity could be used to predict calcium, potassium, magnesium, and sodium concentrations. Atmospheric fine, coarse, and total inhalable particulate matter concentrations were deemed high compared with accepted standards.