Exposure to ambient particulate matter and biomass burning during pregnancy: associations with birth weight in Thailand.

Background: There is a growing evidence that exposure to ambient particulate air pollution during pregnancy is associated with adverse birth outcomes, including reduced birth weight (BW). The objective of this study was to quantify associations between BW and exposure to particulate matter (PM) and biomass burning during pregnancy in Thailand.

Methods: We collected hourly ambient air pollutant data from ground-based monitors (PM with diameter of <10 µm [PM], Ozone [O], and nitrogen dioxide [NO]), biomass burning from satellite remote sensing data, and individual birth weight data during 2015-2018.