The Arizona Department of Environmental Quality (ADEQ) is issuing the following air quality alerts for Maricopa County:
• Health Watch for December 22, 2018
• High Pollution Advisory (HPA) for December 23, 2018
These alerts are for fine particulate matter (PM-2.5). PM-2.5 is made up of small particles (soot) found in smoke. ADEQ recommends that people limit outdoor activity while the HPA is in effect, especially children and adults with respiratory problems.