San Antonio Interstate 10 West Air Monitoring Station, San Antonio, Texas | US Environmental Monitoring

San Antonio Interstate 10 West is an air monitoring station located at 5821 Interstate 10 West in San Antonio, Texas, within Bexar County. Operated by the Texas Commission on Environmental Quality, it is part of the US EPA's NEAR ROAD network, which focuses on measuring air pollution near major roadways. This station contributes to the national Air Quality System (AQS) by providing data on criteria pollutants such as nitrogen dioxide, carbon monoxide, and particulate matter. The station operates under the regulatory framework of the US Clean Air Act, which mandates monitoring of ambient air quality to protect public health. As a NEAR ROAD site, it is strategically placed to capture emissions from vehicle traffic, supporting studies on exposure gradients and the effectiveness of emission controls. The station's last sample date was August 31, 2025, indicating ongoing data collection. Environmental monitoring at this location is significant for understanding urban air quality dynamics in San Antonio, a growing metropolitan area with substantial traffic. Data from this station helps inform local air quality management and public health advisories, particularly for populations living near highways. It also contributes to the broader national assessment of air quality trends and compliance with National Ambient Air Quality Standards (NAAQS).

San Antonio Interstate 10 West is situated in a region with a mix of urban and industrial sources, including heavy traffic on Interstate 10. The station's NEAR ROAD designation means it captures pollutant gradients from vehicle emissions, which are critical for assessing exposure risks for nearby communities. The data supports regulatory compliance under the US EPA's AQS network and helps evaluate the effectiveness of transportation-related emission reduction strategies.