Air Quality Index (AQI)
AQI's are calculated from average intervals.

Max AQI's values are updated hourly. Map refreshes every 15 mintues.

Select an AQI Value Maximum AQI Value PM-10 AQI 24-hr Average PM-2.5 AQI 24-hr Average Ozone AQI 8-hr Average Carbon Monoxide AQI 8-hr Average Nitrogen Dioxide AQI 1-hr Average Sulfur Dioxide AQI 1-hr Average
Uncheck this box to see all stations. Stations without data for sensor will be blank.

*Note: the AQI's are calculated from average intervals. PM-10, PM-2.5 and Sulfur Dioxide are 24-hour averages. Ozone and Carbon Monoxide are 8-hour averages. Nitrogen Dioxide is a 1-hour average. This map will display the highest AQI recorded for any device at each station.

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. Please note that not every pollutant is measured at every site.





Follow us on:

Data map will refresh every 15 minutes.
Peak Wind, NO2, O2, CO, PM-2.5, West Phoenix PM-10, and North Phoenix PM-10 are updated hourly and everything else is updated every five minutes.

Select data type:

               
               
               

Select FCDMC ALERT data type:

Select a Rainfall Interval 10-Minute Rainfall 30-Minute Rainfall 1-Hour Rainfall 3-Hour Rainfall 6-Hour Rainfall 1-Day Rainfall 7-Day Rainfall Remove Rain Totals of 0.00



Toggle Map Data Below:

Add/refresh radar with selected observations:




Add/refresh radar without selected observations:

Map Produced by The Flood Control District of Maricopa County Flood Warning Branch Rainfall & Weather Webpage

Questions
If you have questions please contact Maricopa County Air Quality Department. Click Here to be directed to the "Contact Us" webpage.

Tips & Tricks
Press F5 to Refresh Page.
To Pan (move the map) Click and Drag Map.
To Zoom Hold down the CTRL key and drag a box.
Double Click Left Mouse Button to Zoom In.
Double Click Right Mouse to Zoom Out.

Maricopa County Air Quality Department
1001 North Central Avenue, Suite 500
Phoenix AZ 85004
Phone: (602) 506-6010
http://www.maricopa.gov/aq/
Air Monitoring Webpage