There are no restrictions in effect at this time, including wood burning restrictions. Learn more »

Together we can make more clean air.

Restrictions

Reducing Ozone, PM-10, and PM-2.5

Please refer to the information below to find out what restrictions, if any, are prohibited based on the current air quality status. Depending on the status of air quality, restrictions will change, so be sure to take note of the differences. “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. “Health Watch” means the highest concentration of pollution may approach the federal health standard. Unusually sensitive people should consider reducing prolonged or heavy outdoor exertion during a health watch.

Ozone High Pollution Advisory

Ground level ozone is formed by a chemical reaction that needs heat from sunlight, nitrogen oxides and volatile organic compounds (VOCs) to form. The months of April through September make up our Valley’s longer-than-normal “ozone season.”

  1. Leaf blowers being used on governmental properties is not allowed
  2. Woodburning in residential fireplaces, chimineas, outdoor fire pits and similar outdoor fires is not allowed.

PM-10 High Pollution Advisory

PM-10 (sometimes referred to as PM10) is coarse particulate matter less than 10 micrometers in diameter that are generally emitted from sources such as vehicles traveling on unpaved roads, materials handling, and crushing and grinding operations, as well as windblown dust.

  1. Leaf blowers being used on governmental properties is not allowed.
  2. Woodburning in residential fireplaces, chimineas, outdoor fire pits and similar outdoor fires is not allowed.
  3. Off-Highway Vehicles (OHVs) being used in Area A is not allowed.

PM-2.5 High Pollution Advisory

PM-2.5 (sometimes referred to as PM2.5 or PM25) is fine particulate matter less than 2.5 micrometers in diameter that result from fuel combustion from motor vehicles, power generation, and industrial facilities, as well as from residential fireplaces and wood stoves.

  1. Leaf blowers being used on governmental properties is not allowed.
  2. Woodburning in residential fireplaces, chimineas, outdoor fire pits and similar outdoor fires is not allowed.
  3. Off-Highway Vehicles (OHVs) being used in Area A is not allowed.

PM-10 or PM-2.5 Health Watch

  1. Woodburning in residential fireplaces, chimineas, outdoor fire pits and similar outdoor fires is not allowed.

Ozone Health Watch

  1. There are currently no restrictions for Ozone Health Watches.