Overview
Merced-Vierra is an operational air monitoring station in Merced, California, operated by the San Joaquin Valley Unified Air Pollution Control District. It provides ambient air quality data as part of the regional monitoring network.
Merced-Vierra is an air monitoring station located at 3076 E Childs Ave in Merced, California, within the San Joaquin Valley. It is part of the United States' extensive air quality monitoring network, which operates under the EPA's Air Quality System (AQS) framework. The station is managed by the San Joaquin Valley Unified Air Pollution Control District, a local agency responsible for monitoring and regulating air pollutants in the region. The station's last reported sample date is March 31, 2025, indicating ongoing data collection. While specific parameters measured are not detailed, typical air monitoring stations in California track criteria pollutants such as ozone, particulate matter (PM2.5 and PM10), nitrogen dioxide, and carbon monoxide, in compliance with the National Ambient Air Quality Standards (NAAQS). The station's location in an agricultural and urban area supports representative siting for population exposure assessment. Merced-Vierra contributes to the broader environmental monitoring infrastructure that informs public health advisories and regulatory compliance. The data collected supports the San Joaquin Valley's efforts to address air quality challenges, including high ozone and particulate matter levels. This station plays a key role in tracking long-term trends and evaluating the effectiveness of emission reduction strategies.
Environmental context
The San Joaquin Valley faces significant air quality challenges due to a combination of agricultural emissions, vehicle traffic, and geographic conditions that trap pollutants. The Merced-Vierra station monitors criteria pollutants and supports compliance with the EPA's NAAQS. Its siting in a mixed urban-agricultural area provides representative data for population exposure and regulatory decision-making.
Frequently asked questions
The Merced-Vierra air monitoring station is located at 3076 E Childs Ave, Merced, California 95341, United States.
The station is operated by the San Joaquin Valley Unified Air Pollution Control District, which oversees air quality monitoring and regulation in the San Joaquin Valley.
Typical air monitoring stations in California measure criteria pollutants such as ozone, particulate matter (PM2.5 and PM10), nitrogen dioxide, and carbon monoxide under the EPA's AQS network.
The station is part of the EPA's Air Quality System (AQS) network, which collects ambient air quality data to assess compliance with National Ambient Air Quality Standards (NAAQS) and inform public health policies.
Air monitoring in California operates under the federal Clean Air Act, with the EPA setting NAAQS. State and local agencies, such as the San Joaquin Valley Unified APCD, implement monitoring programs to ensure compliance and protect public health.
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