The measurement of solar ultraviolet radiation in Kermanshah city over a one-year period from 2015 to 2016

Background: ultraviolet radiation is present in sunlight. if ultraviolet radiation exceeds the limit,it can cause detrimental effects on human health such as skin cancer and cataract. materials and methods: in this descriptive cross-sectional study,the level of solar ultraviolet radiation type a (uva) were measured using uv log hand held in kermanshah city. the intensity of ultraviolet radiation was measured three times a day including two hours before noon,noon and two o'clock in the a.ernoon. the results were analyzed using anova statistical tests with a confidence interval of 95%. results: the lowest and highest average intensity levels of solar uva in kermanshah were in december (14.21± 0.94 w/m2) and august (32.87 ±2.3 w/m2),respectively. also,winter and summer seasons (with average intensities of 16.37± 1.12 w/m2 and 30.12±1.7 w/m2) had the lowest and highest intensity of this radiation,respectively. conclusion: regarding that uva radiation exceeds the safe exposure level,even in the winter in kermanshah,it is recommended for people to avoid from long-term staying in open spaces at noon and use proper protective wears especially in summer.