A420810403LAT/LON POINT IS AT CORNER OF TRAILER Air Monitoring Station, Williamsport, Pennsylvania

A420810403LAT/LON POINT IS AT CORNER OF TRAILER is an air monitoring station located at 600 Railway Street in Williamsport, Pennsylvania, United States. The station is operated by the Pennsylvania Department of Environmental Protection and is part of the national ambient air quality monitoring network under the US EPA Air Quality System (AQS). The station monitors criteria pollutants and other atmospheric parameters to assess compliance with National Ambient Air Quality Standards (NAAQS). As a regulatory monitoring site, it provides data used for air quality index reporting and public health advisories. The station's siting follows EPA guidelines to ensure representativeness of local air quality. This station contributes to the regional air quality monitoring network in Lycoming County, supporting environmental management and public awareness. The data collected helps track pollution trends and inform emission reduction strategies in the Susquehanna Valley region.

The station is located in Williamsport, a city in north-central Pennsylvania with a mix of industrial, residential, and transportation sources. The surrounding region includes the Susquehanna River valley, which can experience temperature inversions that trap pollutants. Monitoring at this site helps characterize local air quality, particularly for ozone and particulate matter, which are of concern in the Mid-Atlantic region.