Evansville- Lloyd Air Monitoring Station, Evansville, Indiana | USA Environmental Monitoring

Evansville- Lloyd is an air monitoring station located at 10 S. 11th St in Evansville, Indiana, within Vanderburgh County. Operated by the Indiana Department of Environmental Management's Office of Air Quality, this station is part of the broader US EPA Air Quality System (AQS) network, which monitors criteria pollutants and other atmospheric parameters across the United States. The station reports data to the AQS, with the most recent sample date recorded as October 31, 2025. As an air monitoring station, it typically measures pollutants such as ozone, particulate matter, carbon monoxide, sulfur dioxide, and nitrogen dioxide, in line with the National Ambient Air Quality Standards (NAAQS). The station's location in an urban area supports representative siting for population exposure assessment. Environmental monitoring in Evansville contributes to understanding local air quality trends, supporting public health advisories, and informing regulatory compliance. The data from this station helps track progress toward meeting federal air quality standards and can be used by researchers and policymakers to assess the effectiveness of emission reduction strategies.

Evansville- Lloyd operates within the US EPA's regulatory framework, which mandates monitoring of criteria pollutants under the Clean Air Act. The station's urban siting in Evansville provides representative data for population exposure, particularly for ozone and particulate matter. Continuous reporting to the AQS ensures data transparency and supports air quality management decisions in the Ohio River Valley region, which faces challenges from industrial emissions and transportation sources.