How to remove strange banding from PNG export with radial gradient


I'm using Illustrator CC 2014 and have a radial gradient that looks smooth in edit, but gets really weird bands when I export or Save to Web (any format, all settings).

Here's how it looks in Illustrators artboard (just the top):

enter image description here

And here's how it looks after export!?

enter image description here

Notice the two light bands? How do I stop this?

7/7/2014 3:49:00 AM

You can also try adding a grain on top of the gradient- it will kind of simulate PS's gradient dither. Effects > Texture > Grain. It's a raster effect so not optimal, but it should help.

7/9/2014 2:07:00 PM