Overview
Table Mountain Air Monitoring Site in Fresno County, California, is an operational air monitoring station reporting to Santa Barbara County APCD. It provides ambient air quality data as part of the US EPA AQS network.
Table Mountain Air Monitoring Site is an operational air monitoring station located near Milerton Road and Winchell Cove Road in Fresno County, California. The facility is part of the United States' extensive ambient air quality monitoring network, which supports compliance with the Clean Air Act and National Ambient Air Quality Standards (NAAQS). As a fixed-site monitor, it contributes to regional air quality assessment in the San Joaquin Valley, an area known for ozone and particulate matter challenges. The station reports to the Santa Barbara County Air Pollution Control District (APCD), indicating inter-county cooperation or data sharing. While specific parameters measured are not detailed, typical criteria pollutants at such sites include ozone (O3), particulate matter (PM2.5 and PM10), nitrogen dioxide (NO2), sulfur dioxide (SO2), carbon monoxide (CO), and lead (Pb). The last sample date recorded is October 31, 2025, suggesting recent and ongoing data collection. The facility operates under the regulatory framework of the US EPA Air Quality System (AQS), which standardizes monitoring methods and data reporting across the country. The Table Mountain site plays a role in characterizing air quality in a region influenced by agricultural activities, transportation corridors, and urban emissions from nearby cities like Fresno. Continuous monitoring data from this station supports public health advisories, air quality index (AQI) reporting, and state implementation plans for attaining NAAQS. Its location in a rural or suburban setting provides valuable background and downwind measurements, complementing urban monitors in the network.
Environmental context
The Table Mountain Air Monitoring Site is situated in the San Joaquin Valley, a region with some of the highest ozone and PM2.5 concentrations in the United States due to a combination of local emissions and meteorological conditions. The site's location on Milerton Road near Winchell Cove Road provides representative sampling for areas influenced by agricultural burning, vehicle emissions, and transported pollution. Monitoring at this station helps assess compliance with California's stringent air quality standards and supports the development of effective emission reduction strategies.
Frequently asked questions
Table Mountain Air Monitoring Site is located near the intersection of Milerton Road and Winchell Cove Road in Fresno County, California, United States.
As an air monitoring station, it typically measures criteria pollutants such as ozone, particulate matter (PM2.5 and PM10), nitrogen dioxide, sulfur dioxide, carbon monoxide, and lead, in accordance with US EPA standards.
The station reports to the Santa Barbara County Air Pollution Control District (APCD), which may oversee its operation or data management.
Air monitoring in the US is governed by the Clean Air Act and implemented through the EPA Air Quality System (AQS) network, which sets standards for monitoring methods, quality assurance, and data reporting.
Fresno County is part of the San Joaquin Valley, a region with persistent air quality challenges. Monitoring helps track pollutant levels, inform public health advisories, and guide emission reduction efforts.
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