Overview
CTA Building is an operational Air Monitoring Station in Chicago, Illinois, United States. It is part of the national air quality monitoring network, reporting to Radian Corporation.
CTA Building is an operational Air Monitoring Station located at 321 S. Franklin Street in Chicago, Illinois, United States. It serves as a fixed-site monitoring station within the broader US EPA Air Quality System (AQS) network, contributing to ambient air quality surveillance in the Chicago metropolitan area. The station operates under the regulatory framework of the US Clean Air Act and EPA monitoring requirements. While specific parameters measured are not detailed, typical urban monitoring stations track criteria pollutants such as ozone, particulate matter (PM2.5 and PM10), nitrogen dioxide, sulfur dioxide, carbon monoxide, and lead. The reporting agency is Radian Corporation, which handles data collection and quality assurance. Located in downtown Chicago, this station provides critical air quality data for a densely populated urban area with significant traffic and industrial activity. Its measurements support public health advisories, regulatory compliance, and research on urban air pollution trends. The station's long-term operation ensures continuity in the regional monitoring network.
Environmental context
Chicago's air quality is influenced by emissions from transportation, industry, and energy generation. The CTA Building station's location in the central business district provides representative data for population exposure. Monitoring in this area helps track compliance with National Ambient Air Quality Standards (NAAQS) and supports the EPA's AQS network. The station's urban siting is typical for assessing human health impacts of air pollution.
Frequently asked questions
The CTA Building Air Monitoring Station is located at 321 S. Franklin Street in Chicago, Illinois, United States.
As an urban air monitoring station, it typically measures criteria pollutants such as ozone, particulate matter, nitrogen dioxide, sulfur dioxide, carbon monoxide, and lead, in accordance with EPA standards.
The station reports to Radian Corporation, which handles data collection and quality assurance. It is part of the national monitoring network.
The station operates under the US Clean Air Act and is part of the EPA's Air Quality System (AQS) network, which sets standards for monitoring methods, quality assurance, and data reporting.
Chicago's dense population and mix of traffic, industry, and energy sources create significant air pollution. Monitoring helps protect public health, ensure NAAQS compliance, and inform policy decisions.
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