Overview
John Day - Dayton Street (JDD) is an operational air monitoring station in John Day, Oregon, operated by the Oregon Department of Environmental Quality. It provides ambient air quality data as part of the US EPA AQS network.
John Day - Dayton Street (JDD) is an air monitoring station located at 230 NE Dayton Street in John Day, Oregon, within Grant County. Operated by the Oregon Department of Environmental Quality, this station is part of the broader US EPA Air Quality System (AQS) network, which monitors criteria pollutants and other atmospheric parameters to ensure compliance with National Ambient Air Quality Standards (NAAQS). The station's last reported sample date is June 30, 2025, indicating recent operational activity. As a fixed-site monitor, JDD contributes to the spatial coverage of air quality surveillance in rural eastern Oregon, where monitoring density is typically lower than in urban areas. The station likely measures pollutants such as PM2.5, ozone, or nitrogen dioxide, though specific parameters are not detailed. Located in the John Day Valley, the station serves a small community and helps characterize air quality in a region influenced by agriculture, forestry, and seasonal wildfire smoke. Its data supports public health advisories and regulatory assessments under the Clean Air Act, providing essential information for local and state environmental management.
Environmental context
John Day lies in a semi-arid valley in eastern Oregon, where air quality can be affected by agricultural burning, dust from unpaved roads, and summer wildfires. The station's siting is representative of a rural background environment, offering baseline data for regional air quality models. Parameter coverage typically includes criteria pollutants, but speciation or meteorological measurements may be limited. Reporting continuity is maintained through the Oregon DEQ, ensuring data flows into the national AQS database for trend analysis and regulatory compliance.
Frequently asked questions
The station is located at 230 NE Dayton Street in John Day, Oregon, within Grant County. It is operated by the Oregon Department of Environmental Quality.
As part of the US EPA AQS network, the station typically monitors criteria pollutants such as PM2.5, ozone, and nitrogen dioxide, though specific parameters are not publicly listed. The station supports compliance with National Ambient Air Quality Standards.
The station provides critical air quality data for rural eastern Oregon, an area with sparse monitoring coverage. Its measurements help track background pollution levels, assess wildfire smoke impacts, and inform public health advisories.
The station operates under the US Clean Air Act and is part of the EPA's Air Quality System (AQS) network. Data is collected and reported by the Oregon Department of Environmental Quality to ensure compliance with National Ambient Air Quality Standards (NAAQS).
The station's last reported sample date was June 30, 2025, indicating recent operation. Reporting frequency is typically continuous or hourly for automated monitors, with data aggregated and submitted to the AQS database on a regular schedule.
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