Portable Particulate Monitors
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:
Air Quality Division
(602) 771-4834 or (602) 771-6815
*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.
Disclaimer/Warning: These data have been obtained from automated instruments and have not been subjected to a quality assurance review to determine their accuracy. They are presented for public awareness and should not be considered final. Conditions such as power outages and equipment malfunctions can produce invalid data.