Analysis of indoor PM2.5 exposure in Asian countries using time use survey

► We analyzed Indoor PM 2.5 exposure for individual cohorts in 15 Asian countries. ► Time use surveys conducted in individual countries were used for our study. ► China has the highest estimate for average exposure concentration. ► Children and unemployed women between the ages of 35 and 64 are most highly exposed. ► Exposure concentration is greatly affected by people's use of time indoors.