U.S. Department of the Interior
National Park Service
Access to Gaseous Pollutant and Meteorological Data

Air Quality Monitoring Site Reports
Air quality site reports provide information about when, where and what the National Park Service (NPS) has monitored. The focus of this database is on NPS monitors, thus we do not list all monitoring on a state or a network level because only sites in conjunction with parks are in the database.
Select one or more networks to include in the report then click the Continue button