Indonesian wildfires with 5,122 heat sources are creating transboundary smoke affecting southern Thailand, particularly the three border provinces of Narathiwat, Pattani, and Yala. Thailand's Environment Ministry has activated air quality monitoring and early warning systems, with officials tracking wind patterns and air mass movement to assess cross-border pollution impact. Rainfall is forecast for Aug 27-29 which may help mitigate air quality issues in the upper south.