The answer is no.
We currently do not plan to release this column's data via the API since minimum bids (already available via the API) provide a more accurate estimate of your Quality Score.
Why? Because the minimum bid will give you the same information. And he offered the exact translation of minimum bid to quality score.
- "Great" keywords have a minimum bid less than or equal to $0.04
- "Okay" keywords have a minimum bid between $0.05 and $0.30
- "Poor" keywords have a minimum bid that is higher than $0.30
So most API users can do the math and figure it out automatically. Note, these translation tables may change over time.
Forum discussion at Google Groups.