2022 No https://doi.org/10.1016/j.envres.2022.113473 Wu, Yangyang Asia Observational Epidemiology Study Modeling Students Elementary (K-5) Temperature Humidity Particulate Matter (PM) Vegetation Absenteeism Particulate matter (PM) Spatial difference Illness-related absenteeism Elementary students GAM analysis of 693,081 illness-related absences across 2,278 schools found PM2.5-related absentee risk varied spatially with economic and environmental modifiers. Targeted clean air policies should consider localized vulnerabilities.