No, when light emerges from glass into air, it has the same speed it had just before it entered the glass.
Work Step by Step
The average speed of light in air is a constant. It doesn't matter where it has been or where it is going. When the light was traveling through the glass, it was slowed down, but the light that emerges into air immediately resumes its normal speed in air, which is very close to c. This is discussed on page 492.