Average gas prices in Champaign fell nearly $0.14/gallon the past week. As of Sunday, prices averaged $3.16/gal. It compares to the national average which increased $0.06/gal to $3.34/gal according to champaigngasprices.com. Locally, prices are about $0.085/gal cheaper than a month ago. The national average increased nearly $0.12/gal during the last month and is $0.253/gal higher than one year ago. A senior petroleum analyst says oil prices dropped slightly late last week as tensions with Iran cooled "somewhat."