Welcome to the NPS Gaseous Pollutant and Meteorological Data Access Page
Gaseous air pollutant and meteorological data from the National Park Service Gaseous Pollutant
Monitoring Program Database are available for display or download. The number of parameters and
duration of monitoring at sites throughout the network vary over time.
The Monitoring History Database before making your data request.
Please acknowledge the National Park Service as the source of the data if it is used in any presentations or publications