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This executive summary reports on the 2019 air quality monitoring in the state of Acre, Brazil, utilizing a network of 30 low-cost PurpleAir sensors across 22 municipalities. The study focused on particulate matter (PM2.5) concentrations between June and December 2019, identifying significant violations of World Health Organization (WHO) air quality standards primarily driven by biomass burning from deforestation and pasture management.

This case study examines the response of the state of Acre, Brazil, to severe droughts and wildfires in 2005 and 2010. It details the implementation of a centralized 'situation room' to coordinate fire-fighting efforts using satellite data and technical expertise, while analyzing the environmental impacts, policy interventions, and systemic barriers to fire control in the western Amazon.