Urban air pollution is undoubtedly a significant risk factor for human health and has been increasing due to increasing
population, population density, rapid urbanization, industrialization, traffic density, since the 1950s. The aim of the study is to
test the relation between the number of asthma cases and the levels of air pollutants (sulfur dioxide (SO2) and particulate matter
(PM10)). The data are collected for six districts in Izmirfor the years between 2007 and 2010. The results from the regression
show that there is a statistically significant relation between the number of asthma cases and the level of urban air pollution.