Gresham - Gresham Learning Center (GLC) Air Monitoring Station, Gresham, Oregon

Gresham - Gresham Learning Center (GLC) is an operational air monitoring station located at 17630 SE Main Street in Gresham, Multnomah County, Oregon, United States. The station is part of the Oregon Department of Environmental Quality's ambient air monitoring network, which contributes data to the US EPA Air Quality System (AQS). As a fixed-site monitor, it plays a role in assessing regional air quality and compliance with National Ambient Air Quality Standards (NAAQS). The station operates under the regulatory framework of the Clean Air Act and EPA monitoring requirements. Typical air monitoring stations in Oregon measure criteria pollutants such as ozone, particulate matter (PM2.5 and PM10), nitrogen dioxide, sulfur dioxide, carbon monoxide, and lead. Some stations also include meteorological parameters to support data interpretation. The GLC station's specific parameter set is not detailed, but it likely focuses on key pollutants relevant to the Portland-Vancouver-Hillsboro metropolitan area. Environmental monitoring in Gresham supports public health protection and regulatory compliance. The station's location near a learning center underscores its community-oriented role, providing data that informs local air quality alerts and long-term trend analysis. Continuous operation ensures reliable data for state and federal reporting, contributing to regional air quality management and research on urban pollution impacts.

Gresham is located in the Portland metropolitan area, where air quality is influenced by urban emissions, industrial activity, and geographic factors like the Columbia River Gorge. The region faces challenges with ozone and particulate matter, especially during summer inversions and wildfire seasons. The GLC station's placement in a residential area near a school provides representative data for population exposure assessments. Monitoring supports the Oregon Department of Environmental Quality's efforts to meet EPA standards and protect vulnerable communities.