Overview
Walter Johnson is an operational air monitoring station in Las Vegas, Nevada, operated by Clark County Department of Environment and Sustainability. It provides ambient air quality data for the Las Vegas Valley.
Walter Johnson is an air monitoring station located at 7701 Ducharme Ave in Las Vegas, Nevada, within Clark County. The station is part of the local air quality monitoring network managed by the Clark County Department of Environment and Sustainability (DES). It contributes to the U.S. EPA's Air Quality System (AQS) by collecting data on criteria pollutants and other atmospheric parameters. The station operates under the regulatory framework of the U.S. Clean Air Act and the Nevada Division of Environmental Protection. Typical air monitoring stations in this region measure pollutants such as ozone, particulate matter (PM2.5 and PM10), carbon monoxide, sulfur dioxide, and nitrogen dioxide. The data supports compliance with National Ambient Air Quality Standards (NAAQS) and informs public health advisories. Located in the Mojave Desert, the Las Vegas Valley experiences unique air quality challenges, including dust from dry lakebeds and emissions from urban and transportation sources. Walter Johnson's monitoring data helps track pollution trends and supports regional air quality management. The station's last reported sample date is September 30, 2025, indicating ongoing operation.
Environmental context
The Las Vegas Valley is situated in the Mojave Desert, where arid conditions contribute to fugitive dust and particulate matter issues. Urban growth and vehicle emissions add to ozone and nitrogen dioxide levels. The Clark County DES network, including Walter Johnson, monitors these pollutants to ensure compliance with NAAQS and to provide data for public health alerts. The station's siting is representative of suburban residential areas, capturing typical exposure levels for nearby communities.
Frequently asked questions
The Walter Johnson air monitoring station is located at 7701 Ducharme Ave in Las Vegas, Nevada, within Clark County.
As part of the Clark County DES network, the station likely measures criteria pollutants such as ozone, particulate matter (PM2.5 and PM10), carbon monoxide, sulfur dioxide, and nitrogen dioxide, in accordance with EPA standards.
The station is operated by the Clark County Department of Environment and Sustainability (DES), which manages the local air quality monitoring network.
The station provides data to the U.S. EPA's Air Quality System (AQS) to assess compliance with National Ambient Air Quality Standards (NAAQS) and to inform public health advisories.
Las Vegas faces air quality challenges from desert dust, urban emissions, and transportation. Monitoring stations like Walter Johnson help track pollution trends and support mitigation efforts to protect public health.
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