Overview
Gateway Regional Medical Center operates an Air Monitoring Station in Granite City, Illinois, as part of the CSN Supplemental network. The station is managed by the University of California - Davis and provides ongoing ambient air quality data.
Gateway Regional Medical Center hosts an Air Monitoring Station located at 2100 Madison Avenue in Granite City, Madison County, Illinois. This station is part of the Chemical Speciation Network (CSN) Supplemental program, which focuses on measuring speciated particulate matter to support air quality management and health research. The facility is operational and contributes to the broader US EPA Air Quality System (AQS) monitoring network. The station operates under the oversight of the University of California - Davis, which serves as the reporting agency. As a CSN Supplemental site, it collects data on chemical components of fine particulate matter (PM2.5), including elements, ions, and carbon fractions. This speciation data is critical for understanding pollution sources, supporting regulatory compliance with National Ambient Air Quality Standards (NAAQS), and informing public health advisories. The station's last reported sample date is May 31, 2025, indicating recent and ongoing data collection. Located in Granite City, an industrial area near St. Louis, this monitoring station plays a key role in assessing air quality impacts from local industrial sources, transportation, and regional pollution transport. The data generated supports state and federal efforts to protect public health and the environment, particularly for vulnerable populations in the metro-east region. Continued operation ensures long-term trend analysis and compliance with the Clean Air Act.
Environmental context
The Gateway Regional Medical Center monitoring station is situated in Granite City, an industrial hub in southwestern Illinois with significant steel manufacturing, petroleum refining, and transportation emissions. The CSN Supplemental network provides high-resolution chemical speciation data essential for identifying pollution sources and evaluating the effectiveness of emission control strategies. This station's location near major highways and industrial facilities makes it representative of urban-industrial air quality challenges. The data supports the US EPA's National Air Toxics Trends Stations and contributes to the broader understanding of PM2.5 composition and health impacts in the St. Louis metropolitan area.
Frequently asked questions
The station is located at 2100 Madison Avenue in Granite City, Madison County, Illinois, United States.
This station is part of the Chemical Speciation Network (CSN) Supplemental program, which measures chemical components of fine particulate matter (PM2.5) such as elements, ions, and carbon fractions.
The station is operated under the oversight of the University of California - Davis, which serves as the reporting agency for the data.
The station operates under the US EPA Air Quality System (AQS) and supports compliance with National Ambient Air Quality Standards (NAAQS) under the Clean Air Act.
Granite City is an industrial area with steel mills, refineries, and heavy traffic, making air monitoring critical for tracking pollution sources, protecting public health, and informing regulatory actions.
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