City of Mt Vernon recently issued the following announcement.
The first leaf burning period this fall is from Monday through Sunday during the second full week of October, which will be from Monday, October 11 Through Sunday, October 17. The second burning period is from Monday through Sunday during the second full week of November, which will be from Monday, November 8 Through Sunday, November 14.
A leaf burning fire is permitted between the hours of sunrise and sunset each of those days.
No burning shall occur upon any public street, public sidewalk, drainage ditch within the public right-of-way nor any manhole cover or upon the property of another without written permission.
All types of fires must be physically attended by a person at least 18 years of age at all times.
Burning of any kind may be prohibited during any permitted leaf burning period by order of the Fire Chief due to high winds, dry conditions or other factors.
Original source can be found here.