Eugene - 577 E 46TH Street Air Monitoring Station, Oregon

Eugene - 577 E 46TH Street is an air monitoring station located at 577 E 46TH Street in Eugene, Lane County, Oregon, United States. As part of the US EPA Air Quality System (AQS) network, it contributes to the national ambient air quality monitoring program. The station is operational and serves the Eugene-Springfield metropolitan area. The station operates under the regulatory framework of the Clean Air Act and EPA ambient air quality standards. It typically measures criteria pollutants such as ozone, particulate matter (PM2.5 and PM10), nitrogen dioxide, sulfur dioxide, carbon monoxide, and lead. The site is sited to be representative of urban background or near-road conditions, following EPA siting criteria. Data from this station supports state implementation plans and public health assessments. This monitoring station plays a key role in tracking air quality trends in the Willamette Valley, a region influenced by industrial activities, transportation, and seasonal wildfires. The data helps local and state agencies issue air quality alerts and develop strategies to reduce pollution. It also contributes to the national database used for research and regulatory compliance.

The Eugene area experiences air quality challenges from vehicle emissions, wood smoke, and occasional wildfire smoke. The station's location in a residential area provides representative data for population exposure. Monitoring criteria pollutants helps assess compliance with National Ambient Air Quality Standards (NAAQS) and supports public health advisories. The station is part of a network that ensures comprehensive coverage across Oregon.