The Arizona Department of Environmental Quality (ADEQ) operates a network of Portable Particulate Monitors across Arizona. These monitors record hourly average concentrations of particulates
which have been linked to health and visibility concerns.
The purpose of this web page is to provide to the public in near real time, data recorded by the Portable Particulate Monitor Network.
The 24-Hour averages are provided color-coded based on the official EPA 24-Hour Air Quality Index (AQI
1-Hour averages are also provided for assessing short term particulate exposure
for people in sensitive groups.
Click on a location name below or a colored square on the map to the right to access data for that monitoring station in a new window. The default data graph will present the current
and previous day's data, and all historical data can be accessed through the selection tools below the graph.
For more information about this network contact:
Brad Busby, EU Smoke Management
Air Quality Division
*This unofficial 1-hour index
was derived from the PM2.5
AQI levels, which are based on a strong body of epidemiological evidence associating 24-hour PM2.5
exposures with respiratory and cardiovascular morbidity and mortality. For more information on the 1-hour AQI index, follow this link
**U.S. EPA 24-hour
National Air Quality Standard (NAAQS) of 35 µg/m3
. This value is based on the most recent 24-hour rolling average.