The Maricopa County Air Quality Department has declared a No Burn Day for Wednesday, December 4 due to elevated levels of PM10 (dust).

The Maricopa County Air Quality Department has declared a No Burn Day for Wednesday, December 4 due to elevated levels of PM10 (dust).

Take Action

• Eliminate wood burning in fireplaces, stoves, chimeneas, and outdoor fire pits.
• Convert your wood burning fireplace to natural gas or propane. Check if you are eligible to receive up to $2,000 to upgrade your fireplace to natural gas by visiting Maricopa.gov/AQ.
• Avoid using leaf blowers. Use a rake or broom to keep debris out of the road and away from storm drains, ditches, and streams.
• Use electric lawn and garden equipment. Check if you are eligible to receive up to $200 to replace gasoline powered lawn equipment by visiting Maricopa.gov/AQ.
• Reduce your wait time in long drive-thru lines. Park your vehicle and walk inside at coffee shops, fast-food restaurants, curbside pick-up, and banks.
• Fuel your vehicle after dark or during cooler evening hours.
• Use low-VOC (volatile organic compound) or water-based paints, stains, finishes, and paint strippers.
• Properly seal household cleaners, garage and yard chemicals, and other solvents to prevent vapors from evaporating into the air.

No Burn Day Restrictions

• Wood burning in residential fireplaces, chimeneas, outdoor fire pits, and similar outdoor fires is prohibited in Maricopa County. This includes individuals and businesses which have burn permits for open burning.
• Employees and contractors of government entities are prohibited from operating leaf blowers. Residents are encouraged to avoid leaf blowing.
• Off-road vehicles are prohibited from being used.

Regulated Businesses

Businesses conducting dust-generating operations must be vigilant of their dust control measures. Workers may need to cease operating, after stabilizing disturbed areas, if water application and other dust control measures prove ineffective.

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.

PM2.5 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.