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What is Ozone Pollution?

Ozone pollution is a concern in the warmer months of April through September. Ground-level ozone is formed by a chemical reaction that needs heat from sunlight, nitrogen oxides, and volatile organic compounds (VOCs). Ozone High Pollution Advisories are issued when the highest concentration of ozone pollution may approach the federal health standard.


Drive less. When possible, telework, walk, ride a bike, carpool, vanpool or use public transportation.

Avoid waiting in long drive-thru lines, for example, at coffee shops, fast-food restaurants or banks. Park your car and go inside.

Re-fuel your vehicle after dark (or during cooler, evening hours).


During an Ozone High Pollution Advisory, employees and contractors of government entities are prohibited from operating leaf blowers. Wood burning in residential fireplaces, chimineas, outdoor fire pits and similar outdoor fires is also restricted. This includes individuals and businesses which have burn permits for open burning and wood burning fires at hotels and restaurants.