Dirty Socks Air Monitoring Station, Inyo County, California | US EPA AQS Network

Dirty Socks is an air monitoring station located along Highway 190 in Inyo County, California, within the Great Basin Unified Air Pollution Control District. The station is operational and contributes to the US EPA's Air Quality System (AQS), the national repository for ambient air quality data. As a fixed-site monitor, it supports regulatory compliance and public health protection by measuring criteria pollutants and other parameters. The station operates under the regulatory framework of the US Clean Air Act, which mandates National Ambient Air Quality Standards (NAAQS) for pollutants such as ozone, particulate matter, carbon monoxide, sulfur dioxide, nitrogen dioxide, and lead. The Great Basin Unified APCD oversees monitoring in this region, which includes remote desert areas and significant dust sources. The station's last reported sample date is June 30, 2025, indicating ongoing data collection. Located in a sparsely populated area of eastern California, Dirty Socks monitors air quality influenced by natural dust, wildfires, and long-range transport of pollutants. Its data helps characterize background conditions and assess compliance with air quality standards. The station's remote siting provides valuable information for understanding regional air quality dynamics and supporting public health advisories.

The Dirty Socks station is situated in the Owens Valley, a region prone to high winds and fugitive dust from dry lakebeds, such as Owens Lake. The Great Basin Unified APCD focuses on controlling PM10 emissions from these sources. The station's parameter coverage likely includes particulate matter and meteorological variables, supporting the district's dust management program. Its remote location provides a representative baseline for regional air quality, distinct from urban-influenced sites.