Fresno-Pacific Air Monitoring Station, Fresno, California | USA Environmental Monitoring

Fresno-Pacific is an air monitoring station located at 1716 Winery in Fresno, California, within the San Joaquin Valley. It is part of the US EPA Air Quality System (AQS) network, which monitors criteria pollutants and other parameters to assess compliance with National Ambient Air Quality Standards (NAAQS). The station is operated by the San Joaquin Valley Unified Air Pollution Control District, the local regulatory agency responsible for air quality management in the region. The station's last reported sample date is June 30, 2025, indicating ongoing data collection. While specific parameters measured are not detailed, typical monitoring at such stations includes ozone, particulate matter (PM2.5 and PM10), nitrogen dioxide, sulfur dioxide, carbon monoxide, and lead. The San Joaquin Valley is a non-attainment area for ozone and PM2.5, making monitoring critical for regulatory compliance and public health. Fresno-Pacific contributes to the long-term air quality record in California's Central Valley, a region with significant agricultural and industrial activity. The data supports air quality trend analysis, health studies, and policy development. As part of a dense monitoring network, it helps characterize pollution patterns and inform emission reduction strategies.

The San Joaquin Valley experiences some of the highest levels of particulate matter and ozone in the United States due to a combination of geography, climate, and emissions from agriculture, transportation, and industry. The Fresno-Pacific station is sited to represent urban exposure in Fresno, a major city in the valley. Monitoring here is essential for tracking progress toward NAAQS compliance and for providing data to the public and researchers. The station's location near residential areas ensures representative sampling of population exposure.