Blair Street Air Monitoring Station | St. Louis, Missouri | NATTS Network

Blair Street is an air monitoring station located at 3247 Blair Street in St. Louis, Missouri, United States. Operated under the National Air Toxics Trends Stations (NATTS) network, it is part of a nationwide program designed to track long-term trends in air toxics and assess the effectiveness of emissions reduction strategies. The station is situated in an urban residential area, providing representative data for population exposure assessment. The station is managed by Eastern Research Group on behalf of the U.S. Environmental Protection Agency (EPA). As a NATTS site, it measures a suite of hazardous air pollutants (HAPs) including volatile organic compounds, carbonyls, and metals, following rigorous quality assurance protocols. The monitoring data supports the EPA's Air Quality System (AQS) and contributes to the National Air Toxics Assessment (NATA). Regular sampling and reporting ensure continuity and reliability of the data stream. Blair Street plays a key role in characterizing air quality in the St. Louis metropolitan area, which has a history of industrial emissions and urban pollution. The data collected helps inform local air quality management decisions and public health advisories. By participating in the NATTS network, the station supports national efforts to reduce exposure to toxic air pollutants and improve environmental health outcomes.

The St. Louis region features a mix of industrial, transportation, and residential sources of air pollution, including emissions from manufacturing, power generation, and vehicle traffic. The Blair Street station's urban location provides representative monitoring of population exposure to air toxics. Its inclusion in the NATTS network ensures consistent, high-quality data on hazardous pollutants, which is essential for tracking trends and evaluating the effectiveness of air quality regulations under the Clean Air Act.