The Shamrock NOx and ozone air quality monitoring station was installed east of Bayfield, Colorado
in February 2004. The station monitors air quality conditions for the Weminuche Wilderness and Four-Corners Region.
Monitoring instrumentation at the site includes an NOx analyzer (Nitric Oxide–NO,
Nitrogen Dioxide–NO2, Oxides of Nitrogen- NOx), Ozone (O3) analyzer,
and wind speed, wind direction, air temperature, relative humidity, solar radiation, and precipitation
(meteorological) sensors. Hourly data are collected, summarized, and posted daily in the Real-Time Images
section of this Web site. A digital camera system was installed southwest of the monitoring station in
November 2005; images were collected until July 2009. Images of this camera view to the Southwest
were archived and posted to the Image Library database.