Fog on the outside of front windshield...

[muffer]

naka set yung vent mo sa on the top of your dashboard

[Shadetree MKNX]

Direct the air away from the defroster vents, just like Muffler suggested.

But since you can't control the humidity content of the outside air, simply use the wipers, like Bluebimmer already posted. Just set it at the "slowest" intermittent speed.

[maxXxed]

it's called a mist.. u have had cool air circulating within the cabin for quite some time from ur AC.. ur wiper clears it but it just gets back.. rainX wouldn't do much good since it's a temperature phenomenon

try this, turn the AC off, increase fan speed, and redirect air thru the dash vents, switch air inflow from the outside (sideways toggle), but don't turn on the defogger.. it'l be gone after a few minutes

[Shadetree MKNX]

it's called a mist.. u have had cool air circulating within the cabin for quite some time from ur AC.. ur wiper clears it but it just gets back.. rainX wouldn't do much good since it's a temperature phenomenon

try this, turn the AC off, increase fan speed, and redirect air thru the dash vents, switch air inflow from the outside (sideways toggle), but don't turn on the defogger.. it'l be gone after a few minutes

Unless I've gotten cold enough, I'd rather keep the a/c on and use the wipers instead. Afterall, that's what they're there for.

Or you could also opt to turn on the heater up to mid-setting (not too hot, just enough to warm up the windshield) together with the a/c and channel the air directly to the defroster vents. The cabin may start to warm up, but at least the air is still dry (make sure you keep the system in "RECIRC" mode), and it wont be as uncomfortable as when you simply just draw in moist warm air from outside.