Patchy Dense Fog Developing Over East Central Florida, Mixing With Haze From Earlier Fireworks... Haze continues to blanket portions of East Central Florida after earlier fireworks festivities. Due to light winds and high relative humidity, fog is also forming. This fog will become locally dense this morning, lasting until just after daybreak. Visibilities as low as one quarter to one half mile are possible, particularly over the interior. This includes portions of Greater Orlando. The combination of haze and fog will make driving conditions more difficult. If you suddenly encounter dense fog, slow down, increase your following distance, and only use low beam headlights.