The Florida Keys Mosquito Control District will conduct aerial spraying from 6:30 to 8:30 this morning over the Upper Keys, weather permitting.

Airplanes will treat from Mile Marker 98 to 107, including Middle Key Largo, Upper Key Largo and Ocean Reef.

They will spread an adulticide called Dibrom, applied at 0.75 ounces per acre, whose active ingredient is naled, which the district has used for almost 30 years.