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Clean Air Status and Trends Network (CASTNET)

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CASTNET is a national monitoring network established to assess trends in pollutant concentrations, atmospheric deposition, and ecological effects due to changes in air pollutant emissions.

Clean Air Status and Trends Network (CASTNET)

Monitoring

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Maps & Charts

Publications

What's New

  • In July 2020, the long-term site at Horton Station, VA (VPI120) was relocated due to the sale of the property. Sampling resumed on August 6, 2020 at a nearby location. The new site name is Blue Grass Trail but the site identification remains the same (VPI120). The co-located NADP/NTN and NADP/AMoN sites (VA13) were also moved to the new location at the Blue Grass Trail Station.

  • Winners of the 2nd EmPOWER Air Data Challenge have been announced! A project being led by George Mason University will result in an online visualization tool linking air quality (evaluated with CASTNET data) and health impacts to upwind coal-fired EGU emissions.​

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