posted on May, 6 2014 @ 01:55 PM
Here is a program from NASA to view worldwide cloud cover. Since contrails are man made clouds, you can see them too.
I did a screen shot of my area since I noticed a clear blue sky.
Notice there are some trails on the trailing edge of the frontal system over NY and Pennsylvania.
The site is
And you can even look back in history.
What is really cool is you can see just how trails form based on weather patterns.