spatial and temporal variations of pm_2.5 concentration and air quality in isfahan city in 2016

Introduction: particular mineral (pm) less than 2.5 (pm_2.5) is considered as one of the most important pollutants with major health effects. therefore, the aim of this study was to evaluate spatial and temporal variations of pm_2.5 concentrate and air quality in isfahan city in 2016.materials and methods: in this cross-sectional study, spatial and temporal changes in pm_2.5 concentrations were evaluated. the concentrations of pm_2.5 in 6 stations in isfahan were measured. data were analyzed using excel and spss software.results: the results of the study showed that pm_2.5 concentrations were higher in warm months than in cold months, and also in the early days of the week's pm_2.5 concentrations were higher than the weekends. the total average of concentration of pm2.5 in isfahan was 29.87 plusmn; 10.9 mu;g/m^3. city of isfahan was healthy for 296 days and was in an unhealthy condition for 70 days. furthermore, concentration of pm_2.5 was higher in the central parts of isfahan.conclusion: the present study showed that in most days and months of the year, the concentration of pm_2.5 in isfahan was higher than the standard limit of world health organization (25 mu;g/m^3), and pm_2.5 concentrations mean in the cold season was higher than the hot season. it seems that the growth, control and the management of this pollutant is essential for citizens' health and reduction of unhealthy effects.