What Does CASTNET Stand For?

CASTNET stands for Clean Air Status And Trends Network

CASTNET, or Clean Air Status And Trends Network, is a comprehensive monitoring program in the United States that assesses air quality and tracks changes in air pollution levels over time. Established to provide reliable data on atmospheric conditions, CASTNET focuses on the measurement of sulfur and nitrogen compounds, ozone, and related pollutants. This network supports environmental research and policy decisions by delivering critical information to understand air quality trends and their impact on ecosystems and public health.