Overview
Portland - SE 12th Ave & Main St (PTM) is an air monitoring station in Portland, Oregon, operated by the Oregon Department of Environmental Quality. It is part of the US EPA Air Quality System network, monitoring criteria pollutants to assess regiona
Portland - SE 12th Ave & Main St (PTM) is an air monitoring station located in Portland, Oregon, United States. Operated by the Oregon Department of Environmental Quality, this station is part of the national ambient air quality monitoring network under the US EPA Air Quality System (AQS). It serves the Multnomah County area, providing critical data on air pollution levels. The station monitors criteria pollutants as defined by the Clean Air Act, including ozone, particulate matter, carbon monoxide, sulfur dioxide, and nitrogen dioxide. These measurements are essential for determining compliance with National Ambient Air Quality Standards (NAAQS). The station's siting follows EPA guidelines to ensure representativeness of population exposure and background conditions. As part of Oregon's air quality management, this station contributes to public health protection by tracking pollution trends and supporting regulatory actions. Data from this station informs air quality alerts and long-term planning for emission reductions. The station's continuous operation ensures reliable data for both local and national assessments.
Environmental context
Portland is located in the Willamette Valley, a region influenced by both urban emissions and geographic factors like temperature inversions that can trap pollutants. The station's location at SE 12th Ave & Main St is representative of near-road and residential exposure. Monitoring criteria pollutants here helps assess compliance with NAAQS and supports the Oregon Department of Environmental Quality's efforts to manage air quality in a growing metropolitan area.
Frequently asked questions
The station is located at 1240 SE 12th Street in Portland, Oregon, United States, within Multnomah County.
As part of the EPA Air Quality System, this station monitors criteria pollutants such as ozone, particulate matter, carbon monoxide, sulfur dioxide, and nitrogen dioxide to assess compliance with National Ambient Air Quality Standards.
The station is operated by the Oregon Department of Environmental Quality, which is responsible for air quality management in the state.
Air monitoring stations in the US operate under the Clean Air Act and are part of the EPA Air Quality System (AQS). They follow guidelines for siting, instrumentation, and data reporting to ensure compliance with National Ambient Air Quality Standards (NAAQS).
By providing continuous data on air pollutant levels, the station helps issue air quality alerts, supports health studies, and informs emission reduction strategies to protect public health in the Portland metropolitan area.
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