VALPARAISO Air Monitoring Station, Porter County, Indiana | United States

VALPARAISO is an air monitoring station located at 1000 Wesley St. in Valparaiso, Indiana, United States. The station is operated by the Indiana Department of Environmental Management's Office of Air Quality and is part of the national ambient air quality monitoring network. As a fixed-site monitor, it contributes to the assessment of criteria pollutants and other atmospheric parameters in the region. The station operates under the regulatory framework of the US EPA Air Quality System (AQS), which sets standards for monitoring methods, quality assurance, and data reporting. The Indiana Department of Environmental Management oversees the station's compliance with federal and state air quality regulations. Typical monitoring at such stations includes measurements of ozone, particulate matter, nitrogen oxides, sulfur dioxide, carbon monoxide, and lead, though specific parameters measured at this site are not detailed. The environmental significance of the VALPARAISO station lies in its role in tracking air quality trends in Porter County and the broader Lake Michigan region. Data from this station supports public health advisories, regulatory compliance assessments, and research on regional air pollution transport. The station's long-term operation ensures continuity in the air quality record, which is essential for evaluating the effectiveness of emission reduction strategies.

The VALPARAISO station is situated in an area influenced by both urban and industrial emissions from the Chicago-Gary metropolitan region, as well as agricultural sources from the surrounding rural landscape. Monitoring in this context helps characterize the transport of pollutants like ozone and fine particulate matter across state lines. The station's location near Lake Michigan also provides data on lake breeze effects and their impact on local air quality, contributing to the understanding of mesoscale meteorological influences on pollutant dispersion.