22ND & CRAYCROFT Air Monitoring Station, Tucson, Arizona | PAMS Network

22ND & CRAYCROFT is an air monitoring station located in Tucson, Arizona, United States. It is part of the Photochemical Assessment Monitoring Stations (PAMS) network, which focuses on measuring ozone precursors and other pollutants to support air quality management. The station is operated by the Pima County Department of Environmental Quality and is currently operational. The station operates under the regulatory framework of the U.S. EPA Air Quality System (AQS), which sets standards for criteria pollutants and monitoring methods. As a PAMS site, it typically measures a range of parameters including ozone, nitrogen oxides, volatile organic compounds, and meteorological data. This specialized monitoring helps assess photochemical smog formation and compliance with National Ambient Air Quality Standards (NAAQS). Located in Tucson, a city in the Sonoran Desert, the station contributes to understanding air quality in an arid urban environment influenced by vehicle emissions, dust, and seasonal weather patterns. Data from this station supports local and regional air quality planning, public health advisories, and research on atmospheric chemistry. Its long-term operation ensures continuity in tracking pollution trends.

Tucson's air quality is influenced by its desert climate, vehicle emissions, and occasional dust storms. The PAMS network at this station provides detailed data on ozone precursors, which is critical for understanding photochemical smog formation in the region. Monitoring at this site helps evaluate the effectiveness of emission reduction strategies and supports compliance with federal air quality standards.