Arizona Portable Particulate Monitors

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:

Jonny Malloy, Smoke Management
Air Quality Division
(602) 771-6815
Malloy.Jonny@azdeq.gov

LocationPollutant*1-Hour Average (µg/m3)**24-Hour Average (µg/m3)
FlagstaffPM2.577
Camp VerdePM2.525
PrescottPM2.502
SedonaPM2.5010
Show LowPM2.504
SpringervillePM2.515
PaysonPM2.534

Air Quality Index (AQI)

  • 0-38
    Good
    0-12
  • 39-88
    Moderate
    13-35
  • 89-138
    Unhealthy for Sensitive Groups
    36-55
  • 139-351
    Unhealthy
    56-150
  • 352-526
    Very Unhealthy
    151-250
  • >526
    Hazardous
    >250
  • *1-Hr (µg/m3)
    Key
    **24-Hr (µg/m3)

*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.