Calculators can do it.

http://www.highperformancestangs.com....php?page=calc

For a real D/A you must add your current altitude to the correction from the calculator. Elevation is about 1200 feet in these parts.

Right Now
Temp 110
Dew Point 44
Baro 29.70
D/A correction 3556 + 1200

D/A at the track now is 4756.