ELOY Air Monitoring Station, Eloy, Arizona | Environmental Monitoring

ELOY is an air monitoring station located at 801 N. Main Street in Eloy, Arizona, within Pinal County. Operated by the Pinal County Air Pollution Control District (APCD), the 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's last reported sample date is June 30, 2025, indicating ongoing data collection. As a local monitoring site, it typically measures pollutants such as ozone, particulate matter (PM2.5 and PM10), and other criteria pollutants in accordance with EPA standards. The station's siting in a semi-arid desert environment with agricultural and industrial activity influences local air quality patterns. Environmental monitoring in Eloy supports public health by tracking compliance with National Ambient Air Quality Standards (NAAQS). The data contributes to regional air quality assessments and informs regulatory decisions. Pinal County's monitoring network helps characterize pollution sources, including dust from agriculture and emissions from transportation and industry.

Eloy is located in the Sonoran Desert, where dry conditions and frequent dust storms contribute to particulate matter concerns. The station's location near agricultural fields and Interstate 10 means it monitors both natural dust and anthropogenic emissions. As part of the Pinal County network, it supports compliance with EPA's NAAQS for PM10 and PM2.5, and ozone. The data helps assess regional air quality trends and the effectiveness of dust control measures.