HIGH POLLUTION ADVISORY Issued for Today and Tomorrow and the Next Day and the Next Day ...and

"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 Travel Reduction Program are asked to activate their HPA plans on high pollution advisory days.

Ozone: Ground level ozone is formed by a chemical reaction that needs heat from sunlight, nitrogen oxides and VOCs to form

 

 

It started days ago

 

HABOOBS ANYONE OVERWHELMING PHOENIX