Signal Hill (LBSH) Air Monitoring Station, Signal Hill, California | Environmental Monitoring

Signal Hill (LBSH) is an air monitoring station located at 1710 E. 20th Street in Signal Hill, California, within Los Angeles County. Operated by the South Coast Air Quality Management District (SCAQMD), this station is part of the extensive air quality monitoring network in Southern California. The station is operational and contributes to the region's air quality surveillance. The station operates under the regulatory framework of the US EPA's Air Quality System (AQS), which sets standards for criteria pollutants such as ozone, particulate matter, carbon monoxide, nitrogen dioxide, sulfur dioxide, and lead. As part of the SCAQMD network, Signal Hill (LBSH) likely measures multiple pollutants to assess compliance with National Ambient Air Quality Standards (NAAQS). The station's last reported sample date is September 30, 2025, indicating recent data collection. Signal Hill is situated in a densely populated urban area with significant industrial and transportation emissions. The station's data supports public health advisories and regulatory actions aimed at reducing air pollution. Its location near major freeways and industrial zones makes it representative of urban exposure, providing critical information for community health assessments and policy development.

Signal Hill is located in the South Coast Air Basin, an area with persistent air quality challenges due to high population density, heavy traffic, and industrial activity. The basin is subject to stringent regulations under the California Air Resources Board and the US EPA. The monitoring station's placement in a mixed residential-industrial area helps capture exposure patterns relevant to local communities. Parameter coverage typically includes criteria pollutants and may extend to toxic air contaminants or meteorological parameters, depending on network priorities.