Redwood NP Air Monitoring Station, Redwood National Park, California

Redwood NP is an air monitoring station located in Redwood National Park, Del Norte County, California, United States. It is part of the Interagency Monitoring of Protected Visual Environments (IMPROVE) network, which focuses on measuring visibility and fine particulate matter in federally protected areas. The station is operated by the National Park Service and provides critical data on regional haze and air quality trends. The station operates under the U.S. EPA's Ambient Air Quality Monitoring program, which sets standards for criteria pollutants such as PM2.5 and ozone. As an IMPROVE site, it uses specialized equipment to measure light extinction and aerosol speciation, supporting the Regional Haze Rule. The network's data helps assess compliance with the Clean Air Act and informs long-term visibility goals for national parks. Redwood NP's location in a coastal redwood forest makes it sensitive to air pollution from distant sources, including urban and industrial emissions. The station's continuous monitoring supports the National Park Service's mission to preserve natural resources and scenic vistas. Its data contributes to regional air quality management and public health assessments for visitors and surrounding communities.

Redwood National Park is a Class I area under the Clean Air Act, requiring the highest level of air quality protection. The IMPROVE network monitors visibility and particulate matter to track progress toward natural visibility conditions. The station's coastal location is influenced by marine aerosols and occasional wildfire smoke, making speciation data valuable for source apportionment. Monitoring here supports the Regional Haze Rule and provides baseline data for assessing anthropogenic impacts on this ecologically sensitive region.