Ambient air pollution exposure and blood pressure changes during pregnancy

► Trimester air pollutants exposure and blood pressure changes during pregnancy. ► Used space-time ordinary Kriging to estimate daily air pollution concentrations. ► first trimester respirable particles was associated with blood pressure changes between the first 20 weeks of gestation and late pregnancy. ► First trimester ozone was associated with blood pressure changes between the first 20 weeks of gestation and late pregnancy. ► Estimates were most strongly in non-smokers.