JACKSONVILLE, Fla. - The city has issued and air quality advisory.
It's the result of "an exceedance" of the Ozone Standard, which occurred Thursday, according to the City of Jacksonville.
The city says high levels of ozone are expected again Friday and the heat wave is not helping.
The city said children, the elderly and sensitive people should take steps to avoid exposure by staying inside or refraining from strenuous outdoor activity.
If you have to be outside, plan to do what you need to do during the morning or evening hours when ozone levels are generally lower.