The Arizona Department of Environmental Quality has issued an Ozone High Pollution Advisory for May 1, 2015.

This HPA includes the following restrictions:

Contractors cannot use leaf blowers on governmental properties on HPA days.

Open burning activity is restricted in Maricopa County. This includes individuals and businesses which have burn permits for open burning.

"High Pollution Advisory" or "HPA" means the highest concentration of pollution may exceed the federal health standard. Active children, adults and people with lung disease such as asthma should reduce prolonged or heavy outdoor exertion. Maricopa County employers enlisted in the Trip Reduction Program are asked to activate their HPA plans on high pollution advisory days.