You should check with the building department to make sure there haven't been changes, but I believe this is fairly current.
An emergency egress window is required when the basement is going to be used for liveable space. No bedrooms shall be built in basements without emergency egress and sufficient light and ventilation. Sill height of window above floor: Not to exceed 44". Minimum opening area: = 5.7 sq. ft. Minimum opening height = 24" . Minimum opening width: = 24". Double hung windows used for emergency escape shall be permitted to have a net clear opening of 3.3 square ft